./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loop-floats-scientific-comp/loop3.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version ff03de63 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/loop-floats-scientific-comp/loop3.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 bd7fa6dfe7a0889f513bad4c7cfc96eb426f92168ff26ce4409068874579f6bc --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ff03de6 [2021-12-21 12:04:09,146 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-21 12:04:09,147 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-21 12:04:09,196 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-21 12:04:09,198 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-21 12:04:09,199 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-21 12:04:09,200 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-21 12:04:09,203 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-21 12:04:09,205 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-21 12:04:09,206 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-21 12:04:09,206 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-21 12:04:09,208 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-21 12:04:09,209 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-21 12:04:09,211 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-21 12:04:09,212 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-21 12:04:09,213 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-21 12:04:09,214 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-21 12:04:09,216 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-21 12:04:09,219 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-21 12:04:09,220 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-21 12:04:09,221 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-21 12:04:09,227 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-21 12:04:09,228 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-21 12:04:09,228 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-21 12:04:09,230 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-21 12:04:09,230 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-21 12:04:09,230 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-21 12:04:09,231 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-21 12:04:09,231 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-21 12:04:09,231 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-21 12:04:09,232 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-21 12:04:09,232 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-21 12:04:09,233 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-21 12:04:09,233 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-21 12:04:09,234 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-21 12:04:09,234 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-21 12:04:09,234 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-21 12:04:09,235 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-21 12:04:09,235 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-21 12:04:09,235 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-21 12:04:09,236 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-21 12:04:09,239 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-21 12:04:09,263 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-21 12:04:09,263 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-21 12:04:09,263 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-21 12:04:09,263 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-21 12:04:09,264 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-21 12:04:09,264 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-21 12:04:09,264 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-21 12:04:09,265 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-21 12:04:09,265 INFO L138 SettingsManager]: * Use SBE=true [2021-12-21 12:04:09,265 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-21 12:04:09,265 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-21 12:04:09,265 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-21 12:04:09,266 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-21 12:04:09,266 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-21 12:04:09,266 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-21 12:04:09,266 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-21 12:04:09,266 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-21 12:04:09,266 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-21 12:04:09,267 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-21 12:04:09,267 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-21 12:04:09,267 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-21 12:04:09,267 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-21 12:04:09,267 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-21 12:04:09,267 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-21 12:04:09,268 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 12:04:09,268 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-21 12:04:09,268 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-21 12:04:09,269 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-21 12:04:09,270 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-21 12:04:09,270 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-21 12:04:09,270 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-21 12:04:09,270 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-21 12:04:09,270 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-21 12:04:09,270 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-21 12:04:09,271 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bd7fa6dfe7a0889f513bad4c7cfc96eb426f92168ff26ce4409068874579f6bc [2021-12-21 12:04:09,458 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-21 12:04:09,477 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-21 12:04:09,480 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-21 12:04:09,481 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-21 12:04:09,481 INFO L275 PluginConnector]: CDTParser initialized [2021-12-21 12:04:09,482 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loop-floats-scientific-comp/loop3.c [2021-12-21 12:04:09,527 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6983c356d/a3d643c58d2a40a98e792a7ab776ae62/FLAG69281282a [2021-12-21 12:04:09,826 INFO L306 CDTParser]: Found 1 translation units. [2021-12-21 12:04:09,827 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-floats-scientific-comp/loop3.c [2021-12-21 12:04:09,838 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6983c356d/a3d643c58d2a40a98e792a7ab776ae62/FLAG69281282a [2021-12-21 12:04:10,247 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6983c356d/a3d643c58d2a40a98e792a7ab776ae62 [2021-12-21 12:04:10,249 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-21 12:04:10,250 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-21 12:04:10,251 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-21 12:04:10,251 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-21 12:04:10,253 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-21 12:04:10,254 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 12:04:10" (1/1) ... [2021-12-21 12:04:10,255 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39dca43 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:04:10, skipping insertion in model container [2021-12-21 12:04:10,255 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 12:04:10" (1/1) ... [2021-12-21 12:04:10,259 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-21 12:04:10,268 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-21 12:04:10,379 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/loop-floats-scientific-comp/loop3.c[472,485] [2021-12-21 12:04:10,390 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 12:04:10,395 INFO L203 MainTranslator]: Completed pre-run [2021-12-21 12:04:10,404 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/loop-floats-scientific-comp/loop3.c[472,485] [2021-12-21 12:04:10,411 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 12:04:10,419 INFO L208 MainTranslator]: Completed translation [2021-12-21 12:04:10,419 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:04:10 WrapperNode [2021-12-21 12:04:10,419 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-21 12:04:10,420 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-21 12:04:10,420 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-21 12:04:10,420 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-21 12:04:10,424 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:04:10" (1/1) ... [2021-12-21 12:04:10,429 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:04:10" (1/1) ... [2021-12-21 12:04:10,439 INFO L137 Inliner]: procedures = 15, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 57 [2021-12-21 12:04:10,439 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-21 12:04:10,440 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-21 12:04:10,440 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-21 12:04:10,440 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-21 12:04:10,445 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:04:10" (1/1) ... [2021-12-21 12:04:10,445 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:04:10" (1/1) ... [2021-12-21 12:04:10,453 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:04:10" (1/1) ... [2021-12-21 12:04:10,454 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:04:10" (1/1) ... [2021-12-21 12:04:10,461 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:04:10" (1/1) ... [2021-12-21 12:04:10,467 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:04:10" (1/1) ... [2021-12-21 12:04:10,469 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:04:10" (1/1) ... [2021-12-21 12:04:10,474 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-21 12:04:10,476 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-21 12:04:10,476 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-21 12:04:10,476 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-21 12:04:10,477 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:04:10" (1/1) ... [2021-12-21 12:04:10,481 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 12:04:10,489 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 12:04:10,500 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) [2021-12-21 12:04:10,514 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 [2021-12-21 12:04:10,527 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-21 12:04:10,527 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-21 12:04:10,527 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-21 12:04:10,527 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-21 12:04:10,568 INFO L234 CfgBuilder]: Building ICFG [2021-12-21 12:04:10,569 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-21 12:04:10,679 INFO L275 CfgBuilder]: Performing block encoding [2021-12-21 12:04:10,692 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-21 12:04:10,693 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-21 12:04:10,694 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 12:04:10 BoogieIcfgContainer [2021-12-21 12:04:10,694 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-21 12:04:10,695 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-21 12:04:10,696 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-21 12:04:10,698 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-21 12:04:10,699 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 12:04:10" (1/3) ... [2021-12-21 12:04:10,700 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a419f6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 12:04:10, skipping insertion in model container [2021-12-21 12:04:10,700 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:04:10" (2/3) ... [2021-12-21 12:04:10,700 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a419f6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 12:04:10, skipping insertion in model container [2021-12-21 12:04:10,700 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 12:04:10" (3/3) ... [2021-12-21 12:04:10,702 INFO L111 eAbstractionObserver]: Analyzing ICFG loop3.c [2021-12-21 12:04:10,705 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-21 12:04:10,706 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-21 12:04:10,747 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-21 12:04:10,753 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 [2021-12-21 12:04:10,753 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-21 12:04:10,770 INFO L276 IsEmpty]: Start isEmpty. Operand has 16 states, 14 states have (on average 1.5) internal successors, (21), 15 states have internal predecessors, (21), 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) [2021-12-21 12:04:10,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-12-21 12:04:10,773 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 12:04:10,774 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 12:04:10,774 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 12:04:10,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 12:04:10,778 INFO L85 PathProgramCache]: Analyzing trace with hash 119997515, now seen corresponding path program 1 times [2021-12-21 12:04:10,784 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 12:04:10,784 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1816140054] [2021-12-21 12:04:10,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:04:10,785 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 12:04:10,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:04:10,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 12:04:10,895 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 12:04:10,896 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1816140054] [2021-12-21 12:04:10,896 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1816140054] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 12:04:10,897 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 12:04:10,897 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-21 12:04:10,898 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197884661] [2021-12-21 12:04:10,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 12:04:10,902 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-21 12:04:10,903 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 12:04:10,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-21 12:04:10,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-21 12:04:10,927 INFO L87 Difference]: Start difference. First operand has 16 states, 14 states have (on average 1.5) internal successors, (21), 15 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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) [2021-12-21 12:04:10,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 12:04:10,938 INFO L93 Difference]: Finished difference Result 29 states and 38 transitions. [2021-12-21 12:04:10,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-21 12:04:10,939 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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 8 [2021-12-21 12:04:10,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 12:04:10,944 INFO L225 Difference]: With dead ends: 29 [2021-12-21 12:04:10,944 INFO L226 Difference]: Without dead ends: 12 [2021-12-21 12:04:10,946 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-21 12:04:10,949 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 12:04:10,950 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 12:04:10,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2021-12-21 12:04:10,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2021-12-21 12:04:10,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.1818181818181819) internal successors, (13), 11 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 12:04:10,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 13 transitions. [2021-12-21 12:04:10,973 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 13 transitions. Word has length 8 [2021-12-21 12:04:10,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 12:04:10,973 INFO L470 AbstractCegarLoop]: Abstraction has 12 states and 13 transitions. [2021-12-21 12:04:10,973 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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) [2021-12-21 12:04:10,974 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 13 transitions. [2021-12-21 12:04:10,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-12-21 12:04:10,974 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 12:04:10,974 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 12:04:10,975 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-21 12:04:10,975 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 12:04:10,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 12:04:10,976 INFO L85 PathProgramCache]: Analyzing trace with hash -2105434535, now seen corresponding path program 1 times [2021-12-21 12:04:10,976 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 12:04:10,977 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871811340] [2021-12-21 12:04:10,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:04:10,977 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 12:04:11,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:04:11,108 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 12:04:11,108 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 12:04:11,109 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871811340] [2021-12-21 12:04:11,109 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [871811340] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 12:04:11,109 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 12:04:11,109 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-21 12:04:11,109 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136170912] [2021-12-21 12:04:11,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 12:04:11,110 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-21 12:04:11,110 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 12:04:11,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-21 12:04:11,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 12:04:11,111 INFO L87 Difference]: Start difference. First operand 12 states and 13 transitions. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 12:04:11,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 12:04:11,136 INFO L93 Difference]: Finished difference Result 23 states and 26 transitions. [2021-12-21 12:04:11,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-21 12:04:11,137 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-12-21 12:04:11,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 12:04:11,138 INFO L225 Difference]: With dead ends: 23 [2021-12-21 12:04:11,138 INFO L226 Difference]: Without dead ends: 15 [2021-12-21 12:04:11,138 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 12:04:11,139 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 1 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 12:04:11,139 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 19 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 12:04:11,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2021-12-21 12:04:11,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 14. [2021-12-21 12:04:11,142 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) [2021-12-21 12:04:11,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions. [2021-12-21 12:04:11,142 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 15 transitions. Word has length 11 [2021-12-21 12:04:11,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 12:04:11,143 INFO L470 AbstractCegarLoop]: Abstraction has 14 states and 15 transitions. [2021-12-21 12:04:11,143 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 12:04:11,143 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2021-12-21 12:04:11,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-12-21 12:04:11,143 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 12:04:11,143 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 12:04:11,144 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-21 12:04:11,144 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 12:04:11,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 12:04:11,144 INFO L85 PathProgramCache]: Analyzing trace with hash -2048176233, now seen corresponding path program 1 times [2021-12-21 12:04:11,144 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 12:04:11,145 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [401701785] [2021-12-21 12:04:11,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:04:11,145 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 12:04:11,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 12:04:11,169 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-21 12:04:11,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 12:04:11,215 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-21 12:04:11,218 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-12-21 12:04:11,218 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-12-21 12:04:11,220 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-21 12:04:11,223 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2021-12-21 12:04:11,226 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-21 12:04:11,250 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.12 12:04:11 BoogieIcfgContainer [2021-12-21 12:04:11,250 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-21 12:04:11,251 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-21 12:04:11,251 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-21 12:04:11,251 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-21 12:04:11,252 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 12:04:10" (3/4) ... [2021-12-21 12:04:11,254 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-12-21 12:04:11,254 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-21 12:04:11,254 INFO L158 Benchmark]: Toolchain (without parser) took 1004.08ms. Allocated memory is still 98.6MB. Free memory was 69.9MB in the beginning and 74.7MB in the end (delta: -4.8MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-21 12:04:11,255 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 79.7MB. Free memory was 35.8MB in the beginning and 35.8MB in the end (delta: 35.4kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-21 12:04:11,255 INFO L158 Benchmark]: CACSL2BoogieTranslator took 168.34ms. Allocated memory is still 98.6MB. Free memory was 69.6MB in the beginning and 76.0MB in the end (delta: -6.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-21 12:04:11,257 INFO L158 Benchmark]: Boogie Procedure Inliner took 19.47ms. Allocated memory is still 98.6MB. Free memory was 76.0MB in the beginning and 74.5MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-21 12:04:11,260 INFO L158 Benchmark]: Boogie Preprocessor took 35.03ms. Allocated memory is still 98.6MB. Free memory was 74.5MB in the beginning and 73.6MB in the end (delta: 891.9kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-21 12:04:11,262 INFO L158 Benchmark]: RCFGBuilder took 218.85ms. Allocated memory is still 98.6MB. Free memory was 73.6MB in the beginning and 64.0MB in the end (delta: 9.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-12-21 12:04:11,262 INFO L158 Benchmark]: TraceAbstraction took 554.96ms. Allocated memory is still 98.6MB. Free memory was 63.4MB in the beginning and 75.4MB in the end (delta: -12.0MB). Peak memory consumption was 33.9MB. Max. memory is 16.1GB. [2021-12-21 12:04:11,263 INFO L158 Benchmark]: Witness Printer took 2.89ms. Allocated memory is still 98.6MB. Free memory was 75.4MB in the beginning and 74.7MB in the end (delta: 687.0kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-21 12:04:11,264 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 79.7MB. Free memory was 35.8MB in the beginning and 35.8MB in the end (delta: 35.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 168.34ms. Allocated memory is still 98.6MB. Free memory was 69.6MB in the beginning and 76.0MB in the end (delta: -6.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 19.47ms. Allocated memory is still 98.6MB. Free memory was 76.0MB in the beginning and 74.5MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 35.03ms. Allocated memory is still 98.6MB. Free memory was 74.5MB in the beginning and 73.6MB in the end (delta: 891.9kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 218.85ms. Allocated memory is still 98.6MB. Free memory was 73.6MB in the beginning and 64.0MB in the end (delta: 9.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 554.96ms. Allocated memory is still 98.6MB. Free memory was 63.4MB in the beginning and 75.4MB in the end (delta: -12.0MB). Peak memory consumption was 33.9MB. Max. memory is 16.1GB. * Witness Printer took 2.89ms. Allocated memory is still 98.6MB. Free memory was 75.4MB in the beginning and 74.7MB in the end (delta: 687.0kB). 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: 13]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 51, overapproximation of to_real at line 22, overapproximation of someBinaryArithmeticFLOAToperation at line 37. Possible FailurePath: [L15] float pi = 3.14159 ; VAL [pi=314159/100000] [L21] float x = __VERIFIER_nondet_float() ; [L22] float octant1 = 0 ; [L23] float octant2 = pi/8 ; [L24] CALL assume_abort_if_not(x > octant1 && x < octant2) [L11] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, pi=314159/100000] [L24] RET assume_abort_if_not(x > octant1 && x < octant2) [L25] float oddExp = x ; [L26] float evenExp = 1.0 ; [L27] float term = x ; [L28] unsigned int count = 2 ; [L29] int multFactor = 0 ; [L30] int temp ; VAL [count=2, evenExp=1, multFactor=0, oddExp=49, pi=314159/100000, term=49, x=49] [L32] COND TRUE 1 [L34] term = term * (x/count) VAL [count=2, evenExp=1, multFactor=0, oddExp=49, pi=314159/100000, x=49] [L35] EXPR (count>>1 % 2 == 0) ? 1 : -1 VAL [(count>>1 % 2 == 0) ? 1 : -1=-1, count=2, evenExp=1, multFactor=0, oddExp=49, pi=314159/100000, x=49] [L35] multFactor = (count>>1 % 2 == 0) ? 1 : -1 [L37] evenExp = evenExp + multFactor*term [L39] count++ [L41] term = term * (x/count) [L43] oddExp = oddExp + multFactor*term [L45] count++ [L47] temp = __VERIFIER_nondet_int() [L48] COND TRUE temp == 0 VAL [count=4, multFactor=-1, pi=314159/100000, temp=0, x=49] [L51] CALL __VERIFIER_assert( evenExp >= oddExp ) [L13] COND TRUE !(cond) VAL [\old(cond)=0, cond=0, pi=314159/100000] [L13] reach_error() VAL [\old(cond)=0, cond=0, pi=314159/100000] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 16 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.5s, OverallIterations: 3, 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, 1 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1 mSDsluCounter, 36 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 8 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 6 IncrementalHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 28 mSDtfsCounter, 6 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=16occurred in iteration=0, InterpolantAutomatonStates: 5, 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, 2 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 30 NumberOfCodeBlocks, 30 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 17 ConstructedInterpolants, 0 QuantifiedInterpolants, 25 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 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 [2021-12-21 12:04:11,296 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/loop-floats-scientific-comp/loop3.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 bd7fa6dfe7a0889f513bad4c7cfc96eb426f92168ff26ce4409068874579f6bc --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ff03de6 [2021-12-21 12:04:12,844 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-21 12:04:12,846 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-21 12:04:12,880 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-21 12:04:12,881 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-21 12:04:12,883 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-21 12:04:12,884 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-21 12:04:12,888 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-21 12:04:12,889 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-21 12:04:12,892 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-21 12:04:12,893 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-21 12:04:12,896 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-21 12:04:12,896 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-21 12:04:12,898 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-21 12:04:12,899 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-21 12:04:12,902 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-21 12:04:12,902 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-21 12:04:12,903 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-21 12:04:12,904 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-21 12:04:12,907 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-21 12:04:12,911 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-21 12:04:12,912 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-21 12:04:12,912 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-21 12:04:12,913 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-21 12:04:12,915 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-21 12:04:12,917 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-21 12:04:12,917 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-21 12:04:12,918 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-21 12:04:12,919 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-21 12:04:12,919 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-21 12:04:12,919 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-21 12:04:12,920 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-21 12:04:12,921 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-21 12:04:12,921 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-21 12:04:12,922 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-21 12:04:12,922 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-21 12:04:12,923 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-21 12:04:12,923 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-21 12:04:12,923 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-21 12:04:12,924 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-21 12:04:12,925 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-21 12:04:12,926 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-12-21 12:04:12,950 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-21 12:04:12,950 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-21 12:04:12,951 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-21 12:04:12,951 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-21 12:04:12,951 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-21 12:04:12,952 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-21 12:04:12,952 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-21 12:04:12,953 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-21 12:04:12,953 INFO L138 SettingsManager]: * Use SBE=true [2021-12-21 12:04:12,953 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-21 12:04:12,953 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-21 12:04:12,954 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-21 12:04:12,954 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-21 12:04:12,954 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-21 12:04:12,954 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-21 12:04:12,954 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-21 12:04:12,954 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-21 12:04:12,955 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-12-21 12:04:12,955 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-12-21 12:04:12,955 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-21 12:04:12,955 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-21 12:04:12,955 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-21 12:04:12,955 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-21 12:04:12,955 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-21 12:04:12,956 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-21 12:04:12,965 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-21 12:04:12,965 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 12:04:12,965 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-21 12:04:12,966 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-21 12:04:12,966 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-21 12:04:12,966 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-12-21 12:04:12,966 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-12-21 12:04:12,966 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-21 12:04:12,966 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-21 12:04:12,967 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-21 12:04:12,967 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-21 12:04:12,967 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-12-21 12:04:12,967 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bd7fa6dfe7a0889f513bad4c7cfc96eb426f92168ff26ce4409068874579f6bc [2021-12-21 12:04:13,197 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-21 12:04:13,212 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-21 12:04:13,214 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-21 12:04:13,215 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-21 12:04:13,216 INFO L275 PluginConnector]: CDTParser initialized [2021-12-21 12:04:13,216 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loop-floats-scientific-comp/loop3.c [2021-12-21 12:04:13,266 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9ef8a3c84/e54531f8e48a4a28a68967818b29b933/FLAGe311f65b6 [2021-12-21 12:04:13,604 INFO L306 CDTParser]: Found 1 translation units. [2021-12-21 12:04:13,605 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-floats-scientific-comp/loop3.c [2021-12-21 12:04:13,610 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9ef8a3c84/e54531f8e48a4a28a68967818b29b933/FLAGe311f65b6 [2021-12-21 12:04:13,621 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9ef8a3c84/e54531f8e48a4a28a68967818b29b933 [2021-12-21 12:04:13,624 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-21 12:04:13,625 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-21 12:04:13,627 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-21 12:04:13,627 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-21 12:04:13,630 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-21 12:04:13,630 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 12:04:13" (1/1) ... [2021-12-21 12:04:13,632 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@da8e7d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:04:13, skipping insertion in model container [2021-12-21 12:04:13,632 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 12:04:13" (1/1) ... [2021-12-21 12:04:13,636 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-21 12:04:13,647 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-21 12:04:13,740 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/loop-floats-scientific-comp/loop3.c[472,485] [2021-12-21 12:04:13,759 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 12:04:13,771 INFO L203 MainTranslator]: Completed pre-run [2021-12-21 12:04:13,782 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/loop-floats-scientific-comp/loop3.c[472,485] [2021-12-21 12:04:13,796 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 12:04:13,828 INFO L208 MainTranslator]: Completed translation [2021-12-21 12:04:13,835 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:04:13 WrapperNode [2021-12-21 12:04:13,835 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-21 12:04:13,836 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-21 12:04:13,837 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-21 12:04:13,837 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-21 12:04:13,842 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:04:13" (1/1) ... [2021-12-21 12:04:13,854 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:04:13" (1/1) ... [2021-12-21 12:04:13,870 INFO L137 Inliner]: procedures = 16, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 57 [2021-12-21 12:04:13,870 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-21 12:04:13,871 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-21 12:04:13,871 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-21 12:04:13,872 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-21 12:04:13,877 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:04:13" (1/1) ... [2021-12-21 12:04:13,877 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:04:13" (1/1) ... [2021-12-21 12:04:13,882 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:04:13" (1/1) ... [2021-12-21 12:04:13,882 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:04:13" (1/1) ... [2021-12-21 12:04:13,894 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:04:13" (1/1) ... [2021-12-21 12:04:13,898 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:04:13" (1/1) ... [2021-12-21 12:04:13,908 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:04:13" (1/1) ... [2021-12-21 12:04:13,910 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-21 12:04:13,912 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-21 12:04:13,912 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-21 12:04:13,913 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-21 12:04:13,913 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:04:13" (1/1) ... [2021-12-21 12:04:13,918 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 12:04:13,925 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 12:04:13,940 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) [2021-12-21 12:04:13,958 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 [2021-12-21 12:04:13,969 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-21 12:04:13,969 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-12-21 12:04:13,969 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-21 12:04:13,969 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-21 12:04:14,024 INFO L234 CfgBuilder]: Building ICFG [2021-12-21 12:04:14,026 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-21 12:04:18,440 INFO L275 CfgBuilder]: Performing block encoding [2021-12-21 12:04:18,444 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-21 12:04:18,444 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-21 12:04:18,445 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 12:04:18 BoogieIcfgContainer [2021-12-21 12:04:18,446 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-21 12:04:18,447 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-21 12:04:18,447 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-21 12:04:18,449 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-21 12:04:18,449 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 12:04:13" (1/3) ... [2021-12-21 12:04:18,449 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c984394 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 12:04:18, skipping insertion in model container [2021-12-21 12:04:18,449 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:04:13" (2/3) ... [2021-12-21 12:04:18,450 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c984394 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 12:04:18, skipping insertion in model container [2021-12-21 12:04:18,450 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 12:04:18" (3/3) ... [2021-12-21 12:04:18,451 INFO L111 eAbstractionObserver]: Analyzing ICFG loop3.c [2021-12-21 12:04:18,454 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-21 12:04:18,454 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-21 12:04:18,488 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-21 12:04:18,492 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 [2021-12-21 12:04:18,493 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-21 12:04:18,507 INFO L276 IsEmpty]: Start isEmpty. Operand has 16 states, 14 states have (on average 1.5) internal successors, (21), 15 states have internal predecessors, (21), 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) [2021-12-21 12:04:18,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-12-21 12:04:18,511 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 12:04:18,511 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 12:04:18,511 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 12:04:18,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 12:04:18,515 INFO L85 PathProgramCache]: Analyzing trace with hash 119997515, now seen corresponding path program 1 times [2021-12-21 12:04:18,522 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-21 12:04:18,523 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [373172684] [2021-12-21 12:04:18,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:04:18,524 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-21 12:04:18,524 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-21 12:04:18,526 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) [2021-12-21 12:04:18,527 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-12-21 12:04:18,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:04:18,600 INFO L263 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 1 conjunts are in the unsatisfiable core [2021-12-21 12:04:18,603 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 12:04:18,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 12:04:18,664 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 12:04:18,665 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-21 12:04:18,665 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [373172684] [2021-12-21 12:04:18,666 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [373172684] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 12:04:18,666 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 12:04:18,666 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-21 12:04:18,668 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126810737] [2021-12-21 12:04:18,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 12:04:18,671 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-21 12:04:18,672 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-21 12:04:18,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-21 12:04:18,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-21 12:04:18,698 INFO L87 Difference]: Start difference. First operand has 16 states, 14 states have (on average 1.5) internal successors, (21), 15 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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) [2021-12-21 12:04:18,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 12:04:18,708 INFO L93 Difference]: Finished difference Result 29 states and 38 transitions. [2021-12-21 12:04:18,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-21 12:04:18,713 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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 8 [2021-12-21 12:04:18,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 12:04:18,718 INFO L225 Difference]: With dead ends: 29 [2021-12-21 12:04:18,719 INFO L226 Difference]: Without dead ends: 12 [2021-12-21 12:04:18,721 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-21 12:04:18,724 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 12:04:18,725 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 12:04:18,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2021-12-21 12:04:18,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2021-12-21 12:04:18,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.1818181818181819) internal successors, (13), 11 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 12:04:18,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 13 transitions. [2021-12-21 12:04:18,747 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 13 transitions. Word has length 8 [2021-12-21 12:04:18,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 12:04:18,748 INFO L470 AbstractCegarLoop]: Abstraction has 12 states and 13 transitions. [2021-12-21 12:04:18,748 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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) [2021-12-21 12:04:18,748 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 13 transitions. [2021-12-21 12:04:18,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-12-21 12:04:18,749 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 12:04:18,749 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 12:04:18,760 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-12-21 12:04:18,958 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-21 12:04:18,958 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 12:04:18,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 12:04:18,959 INFO L85 PathProgramCache]: Analyzing trace with hash -2105434535, now seen corresponding path program 1 times [2021-12-21 12:04:18,959 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-21 12:04:18,960 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [193253579] [2021-12-21 12:04:18,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:04:18,960 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-21 12:04:18,960 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-21 12:04:18,961 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-21 12:04:18,963 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-12-21 12:04:19,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:04:19,480 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-21 12:04:19,482 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 12:04:19,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 12:04:19,554 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 12:04:19,554 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-21 12:04:19,554 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [193253579] [2021-12-21 12:04:19,554 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [193253579] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 12:04:19,554 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 12:04:19,555 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-21 12:04:19,555 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350821941] [2021-12-21 12:04:19,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 12:04:19,556 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-21 12:04:19,556 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-21 12:04:19,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-21 12:04:19,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 12:04:19,557 INFO L87 Difference]: Start difference. First operand 12 states and 13 transitions. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 12:04:21,776 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-21 12:04:24,015 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.18s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-21 12:04:24,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 12:04:24,112 INFO L93 Difference]: Finished difference Result 23 states and 26 transitions. [2021-12-21 12:04:24,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-21 12:04:24,112 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-12-21 12:04:24,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 12:04:24,112 INFO L225 Difference]: With dead ends: 23 [2021-12-21 12:04:24,113 INFO L226 Difference]: Without dead ends: 15 [2021-12-21 12:04:24,113 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 12:04:24,114 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 1 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2021-12-21 12:04:24,114 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 17 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 2 Unknown, 0 Unchecked, 4.5s Time] [2021-12-21 12:04:24,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2021-12-21 12:04:24,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 14. [2021-12-21 12:04:24,116 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) [2021-12-21 12:04:24,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions. [2021-12-21 12:04:24,121 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 15 transitions. Word has length 11 [2021-12-21 12:04:24,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 12:04:24,122 INFO L470 AbstractCegarLoop]: Abstraction has 14 states and 15 transitions. [2021-12-21 12:04:24,122 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 12:04:24,122 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2021-12-21 12:04:24,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-12-21 12:04:24,122 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 12:04:24,123 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 12:04:24,143 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-12-21 12:04:24,331 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-21 12:04:24,332 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 12:04:24,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 12:04:24,332 INFO L85 PathProgramCache]: Analyzing trace with hash -2048176233, now seen corresponding path program 1 times [2021-12-21 12:04:24,332 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-21 12:04:24,333 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1209075369] [2021-12-21 12:04:24,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:04:24,333 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-21 12:04:24,333 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-21 12:04:24,334 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-21 12:04:24,334 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-12-21 12:04:27,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:04:27,090 WARN L261 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 21 conjunts are in the unsatisfiable core [2021-12-21 12:04:27,092 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 12:04:52,740 WARN L227 SmtUtils]: Spent 9.53s on a formula simplification that was a NOOP. DAG size: 30 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-12-21 12:05:20,974 WARN L227 SmtUtils]: Spent 10.67s on a formula simplification that was a NOOP. DAG size: 33 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)