./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loop-floats-scientific-comp/loop2-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5fbdf5bf 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/loop2-1.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 02e16371708027ec56fdf0402c3e1a5d4f23a0ff ...................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis 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/loop2-1.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 02e16371708027ec56fdf0402c3e1a5d4f23a0ff ................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-5fbdf5b [2021-08-29 08:49:05,177 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-29 08:49:05,179 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-29 08:49:05,201 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-29 08:49:05,202 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-29 08:49:05,205 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-29 08:49:05,207 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-29 08:49:05,209 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-29 08:49:05,211 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-29 08:49:05,213 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-29 08:49:05,214 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-29 08:49:05,229 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-29 08:49:05,229 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-29 08:49:05,233 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-29 08:49:05,235 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-29 08:49:05,236 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-29 08:49:05,237 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-29 08:49:05,237 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-29 08:49:05,238 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-29 08:49:05,240 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-29 08:49:05,241 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-29 08:49:05,241 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-29 08:49:05,242 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-29 08:49:05,243 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-29 08:49:05,244 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-29 08:49:05,245 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-29 08:49:05,245 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-29 08:49:05,246 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-29 08:49:05,246 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-29 08:49:05,247 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-29 08:49:05,247 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-29 08:49:05,247 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-29 08:49:05,248 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-29 08:49:05,248 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-29 08:49:05,249 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-29 08:49:05,249 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-29 08:49:05,250 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-29 08:49:05,250 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-29 08:49:05,250 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-29 08:49:05,251 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-29 08:49:05,251 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-29 08:49:05,252 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-08-29 08:49:05,276 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-29 08:49:05,276 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-29 08:49:05,277 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-29 08:49:05,277 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-29 08:49:05,279 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-29 08:49:05,279 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-29 08:49:05,279 INFO L138 SettingsManager]: * Use SBE=true [2021-08-29 08:49:05,279 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-29 08:49:05,279 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-29 08:49:05,279 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-29 08:49:05,280 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-29 08:49:05,280 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-29 08:49:05,280 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-29 08:49:05,280 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-29 08:49:05,281 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-29 08:49:05,281 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-29 08:49:05,281 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-29 08:49:05,281 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-29 08:49:05,281 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-29 08:49:05,281 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-29 08:49:05,281 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-29 08:49:05,282 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-29 08:49:05,282 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-29 08:49:05,282 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-29 08:49:05,282 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-29 08:49:05,282 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-29 08:49:05,282 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-29 08:49:05,283 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-29 08:49:05,283 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-29 08:49:05,283 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-29 08:49:05,283 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 02e16371708027ec56fdf0402c3e1a5d4f23a0ff [2021-08-29 08:49:05,508 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-29 08:49:05,521 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-29 08:49:05,523 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-29 08:49:05,524 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-29 08:49:05,524 INFO L275 PluginConnector]: CDTParser initialized [2021-08-29 08:49:05,525 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loop-floats-scientific-comp/loop2-1.c [2021-08-29 08:49:05,573 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/04c29ddf7/7601fc28b5ee4bd28c3c61dfe605c046/FLAGeb4997606 [2021-08-29 08:49:05,962 INFO L306 CDTParser]: Found 1 translation units. [2021-08-29 08:49:05,962 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-floats-scientific-comp/loop2-1.c [2021-08-29 08:49:05,967 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/04c29ddf7/7601fc28b5ee4bd28c3c61dfe605c046/FLAGeb4997606 [2021-08-29 08:49:05,979 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/04c29ddf7/7601fc28b5ee4bd28c3c61dfe605c046 [2021-08-29 08:49:05,982 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-29 08:49:05,984 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-29 08:49:05,985 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-29 08:49:05,986 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-29 08:49:05,988 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-29 08:49:05,989 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 08:49:05" (1/1) ... [2021-08-29 08:49:05,990 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f9423cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:49:05, skipping insertion in model container [2021-08-29 08:49:05,990 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 08:49:05" (1/1) ... [2021-08-29 08:49:05,994 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-29 08:49:06,005 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-29 08:49:06,122 WARN L228 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/loop2-1.c[474,487] [2021-08-29 08:49:06,138 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-29 08:49:06,143 INFO L203 MainTranslator]: Completed pre-run [2021-08-29 08:49:06,151 WARN L228 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/loop2-1.c[474,487] [2021-08-29 08:49:06,155 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-29 08:49:06,165 INFO L208 MainTranslator]: Completed translation [2021-08-29 08:49:06,165 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:49:06 WrapperNode [2021-08-29 08:49:06,165 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-29 08:49:06,166 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-29 08:49:06,166 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-29 08:49:06,166 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-29 08:49:06,175 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:49:06" (1/1) ... [2021-08-29 08:49:06,181 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:49:06" (1/1) ... [2021-08-29 08:49:06,207 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-29 08:49:06,209 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-29 08:49:06,209 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-29 08:49:06,209 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-29 08:49:06,214 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:49:06" (1/1) ... [2021-08-29 08:49:06,214 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:49:06" (1/1) ... [2021-08-29 08:49:06,215 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:49:06" (1/1) ... [2021-08-29 08:49:06,216 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:49:06" (1/1) ... [2021-08-29 08:49:06,218 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:49:06" (1/1) ... [2021-08-29 08:49:06,221 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:49:06" (1/1) ... [2021-08-29 08:49:06,222 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:49:06" (1/1) ... [2021-08-29 08:49:06,223 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-29 08:49:06,224 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-29 08:49:06,224 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-29 08:49:06,224 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-29 08:49:06,224 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:49:06" (1/1) ... [2021-08-29 08:49:06,229 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-29 08:49:06,236 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 08:49:06,250 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) [2021-08-29 08:49:06,273 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 [2021-08-29 08:49:06,298 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-29 08:49:06,298 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-29 08:49:06,298 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-29 08:49:06,299 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-29 08:49:06,439 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-29 08:49:06,439 INFO L299 CfgBuilder]: Removed 9 assume(true) statements. [2021-08-29 08:49:06,440 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 08:49:06 BoogieIcfgContainer [2021-08-29 08:49:06,441 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-29 08:49:06,443 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-29 08:49:06,443 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-29 08:49:06,446 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-29 08:49:06,446 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.08 08:49:05" (1/3) ... [2021-08-29 08:49:06,447 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a14503 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 08:49:06, skipping insertion in model container [2021-08-29 08:49:06,447 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:49:06" (2/3) ... [2021-08-29 08:49:06,447 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a14503 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 08:49:06, skipping insertion in model container [2021-08-29 08:49:06,447 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 08:49:06" (3/3) ... [2021-08-29 08:49:06,450 INFO L111 eAbstractionObserver]: Analyzing ICFG loop2-1.c [2021-08-29 08:49:06,454 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-29 08:49:06,455 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-08-29 08:49:06,494 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-29 08:49:06,500 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, mConcurrency=FINITE_AUTOMATA, 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 [2021-08-29 08:49:06,501 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-08-29 08:49:06,511 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) [2021-08-29 08:49:06,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-08-29 08:49:06,515 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 08:49:06,516 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 08:49:06,517 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 08:49:06,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 08:49:06,522 INFO L82 PathProgramCache]: Analyzing trace with hash 119997515, now seen corresponding path program 1 times [2021-08-29 08:49:06,528 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 08:49:06,528 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1506018369] [2021-08-29 08:49:06,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 08:49:06,529 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 08:49:06,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 08:49:06,663 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 08:49:06,664 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 08:49:06,667 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1506018369] [2021-08-29 08:49:06,675 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1506018369] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 08:49:06,675 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 08:49:06,675 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-29 08:49:06,676 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237564614] [2021-08-29 08:49:06,680 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-08-29 08:49:06,680 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 08:49:06,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-08-29 08:49:06,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-08-29 08:49:06,708 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) [2021-08-29 08:49:06,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 08:49:06,749 INFO L93 Difference]: Finished difference Result 29 states and 38 transitions. [2021-08-29 08:49:06,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-08-29 08:49:06,754 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 [2021-08-29 08:49:06,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 08:49:06,758 INFO L225 Difference]: With dead ends: 29 [2021-08-29 08:49:06,758 INFO L226 Difference]: Without dead ends: 12 [2021-08-29 08:49:06,760 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.04ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-08-29 08:49:06,762 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.50ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.19ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 29.04ms IncrementalHoareTripleChecker+Time [2021-08-29 08:49:06,763 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 17 Unknown, 0 Unchecked, 0.19ms Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 29.04ms Time] [2021-08-29 08:49:06,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2021-08-29 08:49:06,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2021-08-29 08:49:06,794 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) [2021-08-29 08:49:06,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 13 transitions. [2021-08-29 08:49:06,795 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 13 transitions. Word has length 8 [2021-08-29 08:49:06,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 08:49:06,796 INFO L470 AbstractCegarLoop]: Abstraction has 12 states and 13 transitions. [2021-08-29 08:49:06,796 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) [2021-08-29 08:49:06,796 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 13 transitions. [2021-08-29 08:49:06,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-08-29 08:49:06,796 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 08:49:06,797 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 08:49:06,797 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-29 08:49:06,797 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 08:49:06,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 08:49:06,798 INFO L82 PathProgramCache]: Analyzing trace with hash -2105434535, now seen corresponding path program 1 times [2021-08-29 08:49:06,798 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 08:49:06,798 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [256181256] [2021-08-29 08:49:06,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 08:49:06,798 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 08:49:06,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 08:49:06,899 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 08:49:06,900 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 08:49:06,900 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [256181256] [2021-08-29 08:49:06,900 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [256181256] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 08:49:06,900 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 08:49:06,900 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-29 08:49:06,900 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552206207] [2021-08-29 08:49:06,901 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-29 08:49:06,901 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 08:49:06,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-29 08:49:06,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-29 08:49:06,903 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) [2021-08-29 08:49:06,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 08:49:06,926 INFO L93 Difference]: Finished difference Result 23 states and 26 transitions. [2021-08-29 08:49:06,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-29 08:49:06,927 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 [2021-08-29 08:49:06,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 08:49:06,927 INFO L225 Difference]: With dead ends: 23 [2021-08-29 08:49:06,927 INFO L226 Difference]: Without dead ends: 15 [2021-08-29 08:49:06,928 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.65ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-29 08:49:06,929 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 1 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.82ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.38ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.90ms IncrementalHoareTripleChecker+Time [2021-08-29 08:49:06,929 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 0 Invalid, 25 Unknown, 0 Unchecked, 0.38ms Time], IncrementalHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 18.90ms Time] [2021-08-29 08:49:06,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2021-08-29 08:49:06,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 14. [2021-08-29 08:49:06,932 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) [2021-08-29 08:49:06,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions. [2021-08-29 08:49:06,932 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 15 transitions. Word has length 11 [2021-08-29 08:49:06,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 08:49:06,939 INFO L470 AbstractCegarLoop]: Abstraction has 14 states and 15 transitions. [2021-08-29 08:49:06,939 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) [2021-08-29 08:49:06,939 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2021-08-29 08:49:06,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-08-29 08:49:06,940 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 08:49:06,940 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 08:49:06,940 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-29 08:49:06,940 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 08:49:06,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 08:49:06,941 INFO L82 PathProgramCache]: Analyzing trace with hash -2048176233, now seen corresponding path program 1 times [2021-08-29 08:49:06,941 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 08:49:06,941 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [909587808] [2021-08-29 08:49:06,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 08:49:06,941 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 08:49:06,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-29 08:49:06,955 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-29 08:49:06,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-29 08:49:06,986 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-29 08:49:06,987 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-08-29 08:49:06,988 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-08-29 08:49:06,990 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-08-29 08:49:06,996 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-29 08:49:07,018 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.08 08:49:07 BoogieIcfgContainer [2021-08-29 08:49:07,018 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-29 08:49:07,019 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-29 08:49:07,019 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-29 08:49:07,019 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-29 08:49:07,019 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 08:49:06" (3/4) ... [2021-08-29 08:49:07,021 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-08-29 08:49:07,021 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-29 08:49:07,022 INFO L158 Benchmark]: Toolchain (without parser) took 1037.98ms. Allocated memory was 56.6MB in the beginning and 71.3MB in the end (delta: 14.7MB). Free memory was 34.5MB in the beginning and 35.1MB in the end (delta: -603.6kB). Peak memory consumption was 15.5MB. Max. memory is 16.1GB. [2021-08-29 08:49:07,022 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 56.6MB. Free memory was 38.5MB in the beginning and 38.4MB in the end (delta: 85.4kB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-29 08:49:07,023 INFO L158 Benchmark]: CACSL2BoogieTranslator took 180.09ms. Allocated memory is still 56.6MB. Free memory was 34.2MB in the beginning and 37.8MB in the end (delta: -3.6MB). Peak memory consumption was 7.3MB. Max. memory is 16.1GB. [2021-08-29 08:49:07,023 INFO L158 Benchmark]: Boogie Procedure Inliner took 41.76ms. Allocated memory was 56.6MB in the beginning and 71.3MB in the end (delta: 14.7MB). Free memory was 37.8MB in the beginning and 54.7MB in the end (delta: -16.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-08-29 08:49:07,023 INFO L158 Benchmark]: Boogie Preprocessor took 14.39ms. Allocated memory is still 71.3MB. Free memory was 54.7MB in the beginning and 53.6MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-29 08:49:07,024 INFO L158 Benchmark]: RCFGBuilder took 217.14ms. Allocated memory is still 71.3MB. Free memory was 53.6MB in the beginning and 44.9MB in the end (delta: 8.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-08-29 08:49:07,024 INFO L158 Benchmark]: TraceAbstraction took 574.91ms. Allocated memory is still 71.3MB. Free memory was 44.2MB in the beginning and 35.4MB in the end (delta: 8.8MB). Peak memory consumption was 12.2MB. Max. memory is 16.1GB. [2021-08-29 08:49:07,024 INFO L158 Benchmark]: Witness Printer took 2.69ms. Allocated memory is still 71.3MB. Free memory was 35.4MB in the beginning and 35.1MB in the end (delta: 346.3kB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-29 08:49:07,026 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 56.6MB. Free memory was 38.5MB in the beginning and 38.4MB in the end (delta: 85.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 180.09ms. Allocated memory is still 56.6MB. Free memory was 34.2MB in the beginning and 37.8MB in the end (delta: -3.6MB). Peak memory consumption was 7.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 41.76ms. Allocated memory was 56.6MB in the beginning and 71.3MB in the end (delta: 14.7MB). Free memory was 37.8MB in the beginning and 54.7MB in the end (delta: -16.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 14.39ms. Allocated memory is still 71.3MB. Free memory was 54.7MB in the beginning and 53.6MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 217.14ms. Allocated memory is still 71.3MB. Free memory was 53.6MB in the beginning and 44.9MB in the end (delta: 8.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 574.91ms. Allocated memory is still 71.3MB. Free memory was 44.2MB in the beginning and 35.4MB in the end (delta: 8.8MB). Peak memory consumption was 12.2MB. Max. memory is 16.1GB. * Witness Printer took 2.69ms. Allocated memory is still 71.3MB. Free memory was 35.4MB in the beginning and 35.1MB in the end (delta: 346.3kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.00ms ErrorAutomatonConstructionTimeTotal, 0.00ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.00ms ErrorAutomatonConstructionTimeAvg, 0.00ms ErrorAutomatonDifferenceTimeAvg, 0.00ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 12]: 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 49, overapproximation of someBinaryArithmeticFLOAToperation at line 35. Possible FailurePath: [L14] float pi = 3.14159 ; VAL [pi=314159/100000] [L20] float x = __VERIFIER_nondet_float() ; [L21] float octant = pi/3 ; [L10] COND FALSE !(!cond) VAL [pi=314159/100000] [L23] float oddExp = x ; [L24] float evenExp = 1.0 ; [L25] float term = x ; [L26] unsigned int count = 2 ; [L27] int multFactor = 0 ; [L28] int temp ; VAL [pi=314159/100000] [L30] COND TRUE 1 [L32] term = term * (x/count) VAL [pi=314159/100000] [L33] EXPR (count>>1 % 2 == 0) ? 1 : -1 VAL [pi=314159/100000] [L33] multFactor = (count>>1 % 2 == 0) ? 1 : -1 [L35] evenExp = evenExp + multFactor*term [L37] count++ [L39] term = term * (x/count) [L41] oddExp = oddExp + multFactor*term [L43] count++ [L45] temp = __VERIFIER_nondet_int() [L46] COND TRUE temp == 0 VAL [pi=314159/100000] [L12] COND TRUE !(cond) VAL [pi=314159/100000] [L12] reach_error() VAL [pi=314159/100000] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 16 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 501.50ms, OverallIterations: 3, TraceHistogramMax: 1, EmptinessCheckTime: 7.10ms, AutomataDifference: 111.79ms, DeadEndRemovalTime: 0.00ms, HoareAnnotationTime: 0.00ms, InitialAbstractionConstructionTime: 7.91ms, PartialOrderReductionTime: 0.00ms, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1 SdHoareTripleChecker+Valid, 47.93ms IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 38.31ms Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 8 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 42 IncrementalHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 0 mSDtfsCounter, 42 mSolverCounterSat, 0.56ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.69ms Time, 0.00ms 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, 0.00ms DumpTime, AutomataMinimizationStatistics: 25.02ms AutomataMinimizationTime, 2 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 12.07ms SsaConstructionTime, 62.31ms SatisfiabilityAnalysisTime, 128.60ms InterpolantComputationTime, 30 NumberOfCodeBlocks, 30 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 17 ConstructedInterpolants, 0 QuantifiedInterpolants, 21 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 [2021-08-29 08:49:07,070 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-wip.dd.seqcomp-5fbdf5b [2021-08-29 08:49:08,538 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-29 08:49:08,540 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-29 08:49:08,568 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-29 08:49:08,568 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-29 08:49:08,569 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-29 08:49:08,570 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-29 08:49:08,571 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-29 08:49:08,572 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-29 08:49:08,573 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-29 08:49:08,574 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-29 08:49:08,574 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-29 08:49:08,575 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-29 08:49:08,575 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-29 08:49:08,579 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-29 08:49:08,581 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-29 08:49:08,583 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-29 08:49:08,586 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-29 08:49:08,590 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-29 08:49:08,596 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-29 08:49:08,598 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-29 08:49:08,600 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-29 08:49:08,602 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-29 08:49:08,602 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-29 08:49:08,607 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-29 08:49:08,609 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-29 08:49:08,609 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-29 08:49:08,610 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-29 08:49:08,611 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-29 08:49:08,611 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-29 08:49:08,612 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-29 08:49:08,613 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-29 08:49:08,614 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-29 08:49:08,614 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-29 08:49:08,615 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-29 08:49:08,615 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-29 08:49:08,616 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-29 08:49:08,616 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-29 08:49:08,616 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-29 08:49:08,617 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-29 08:49:08,618 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-29 08:49:08,618 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-08-29 08:49:08,643 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-29 08:49:08,643 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-29 08:49:08,644 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-29 08:49:08,644 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-29 08:49:08,645 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-29 08:49:08,645 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-29 08:49:08,645 INFO L138 SettingsManager]: * Use SBE=true [2021-08-29 08:49:08,645 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-29 08:49:08,645 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-29 08:49:08,646 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-29 08:49:08,646 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-29 08:49:08,646 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-29 08:49:08,646 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-29 08:49:08,646 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-29 08:49:08,646 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-08-29 08:49:08,647 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-08-29 08:49:08,647 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-29 08:49:08,647 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-29 08:49:08,647 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-29 08:49:08,647 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-29 08:49:08,647 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-29 08:49:08,655 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-29 08:49:08,655 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-29 08:49:08,655 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-29 08:49:08,656 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-29 08:49:08,656 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-29 08:49:08,656 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-29 08:49:08,656 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-08-29 08:49:08,656 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-08-29 08:49:08,657 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-29 08:49:08,657 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-29 08:49:08,657 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-08-29 08:49:08,657 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 02e16371708027ec56fdf0402c3e1a5d4f23a0ff [2021-08-29 08:49:08,944 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-29 08:49:08,962 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-29 08:49:08,965 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-29 08:49:08,965 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-29 08:49:08,966 INFO L275 PluginConnector]: CDTParser initialized [2021-08-29 08:49:08,967 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loop-floats-scientific-comp/loop2-1.c [2021-08-29 08:49:09,028 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e875695a0/9536df172e6c47579c1c7c0a355bd690/FLAG0ac17e28f [2021-08-29 08:49:09,369 INFO L306 CDTParser]: Found 1 translation units. [2021-08-29 08:49:09,370 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-floats-scientific-comp/loop2-1.c [2021-08-29 08:49:09,375 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e875695a0/9536df172e6c47579c1c7c0a355bd690/FLAG0ac17e28f [2021-08-29 08:49:09,792 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e875695a0/9536df172e6c47579c1c7c0a355bd690 [2021-08-29 08:49:09,793 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-29 08:49:09,794 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-29 08:49:09,795 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-29 08:49:09,795 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-29 08:49:09,799 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-29 08:49:09,800 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 08:49:09" (1/1) ... [2021-08-29 08:49:09,801 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c55cfc8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:49:09, skipping insertion in model container [2021-08-29 08:49:09,801 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 08:49:09" (1/1) ... [2021-08-29 08:49:09,806 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-29 08:49:09,815 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-29 08:49:09,890 WARN L228 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/loop2-1.c[474,487] [2021-08-29 08:49:09,900 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-29 08:49:09,907 INFO L203 MainTranslator]: Completed pre-run [2021-08-29 08:49:09,914 WARN L228 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/loop2-1.c[474,487] [2021-08-29 08:49:09,918 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-29 08:49:09,931 INFO L208 MainTranslator]: Completed translation [2021-08-29 08:49:09,932 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:49:09 WrapperNode [2021-08-29 08:49:09,932 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-29 08:49:09,933 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-29 08:49:09,933 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-29 08:49:09,933 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-29 08:49:09,944 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:49:09" (1/1) ... [2021-08-29 08:49:09,968 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:49:09" (1/1) ... [2021-08-29 08:49:09,986 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-29 08:49:09,987 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-29 08:49:09,987 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-29 08:49:09,987 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-29 08:49:09,992 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:49:09" (1/1) ... [2021-08-29 08:49:09,993 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:49:09" (1/1) ... [2021-08-29 08:49:09,999 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:49:09" (1/1) ... [2021-08-29 08:49:09,999 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:49:09" (1/1) ... [2021-08-29 08:49:10,015 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:49:09" (1/1) ... [2021-08-29 08:49:10,018 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:49:09" (1/1) ... [2021-08-29 08:49:10,024 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:49:09" (1/1) ... [2021-08-29 08:49:10,026 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-29 08:49:10,027 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-29 08:49:10,027 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-29 08:49:10,027 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-29 08:49:10,027 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:49:09" (1/1) ... [2021-08-29 08:49:10,035 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-29 08:49:10,042 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 08:49:10,050 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) [2021-08-29 08:49:10,051 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 [2021-08-29 08:49:10,078 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-08-29 08:49:10,079 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-29 08:49:10,079 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-29 08:49:10,079 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-29 08:49:10,219 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-29 08:49:10,219 INFO L299 CfgBuilder]: Removed 9 assume(true) statements. [2021-08-29 08:49:10,220 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 08:49:10 BoogieIcfgContainer [2021-08-29 08:49:10,220 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-29 08:49:10,222 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-29 08:49:10,222 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-29 08:49:10,224 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-29 08:49:10,224 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.08 08:49:09" (1/3) ... [2021-08-29 08:49:10,224 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79234761 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 08:49:10, skipping insertion in model container [2021-08-29 08:49:10,225 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:49:09" (2/3) ... [2021-08-29 08:49:10,225 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79234761 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 08:49:10, skipping insertion in model container [2021-08-29 08:49:10,225 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 08:49:10" (3/3) ... [2021-08-29 08:49:10,226 INFO L111 eAbstractionObserver]: Analyzing ICFG loop2-1.c [2021-08-29 08:49:10,229 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-29 08:49:10,229 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-08-29 08:49:10,257 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-29 08:49:10,262 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, mConcurrency=FINITE_AUTOMATA, 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 [2021-08-29 08:49:10,262 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-08-29 08:49:10,270 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) [2021-08-29 08:49:10,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-08-29 08:49:10,273 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 08:49:10,273 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 08:49:10,274 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 08:49:10,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 08:49:10,280 INFO L82 PathProgramCache]: Analyzing trace with hash 119997515, now seen corresponding path program 1 times [2021-08-29 08:49:10,287 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-29 08:49:10,288 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [422424405] [2021-08-29 08:49:10,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 08:49:10,288 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-29 08:49:10,289 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-29 08:49:10,294 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) [2021-08-29 08:49:10,330 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-08-29 08:49:10,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 08:49:10,446 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 1 conjunts are in the unsatisfiable core [2021-08-29 08:49:10,449 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-29 08:49:10,509 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 08:49:10,510 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-29 08:49:10,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 08:49:10,528 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-29 08:49:10,528 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [422424405] [2021-08-29 08:49:10,528 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [422424405] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-29 08:49:10,529 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-29 08:49:10,529 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-08-29 08:49:10,530 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668999340] [2021-08-29 08:49:10,533 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-08-29 08:49:10,533 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-29 08:49:10,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-08-29 08:49:10,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-08-29 08:49:10,550 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) [2021-08-29 08:49:12,541 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-08-29 08:49:14,789 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.19s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-08-29 08:49:14,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 08:49:14,896 INFO L93 Difference]: Finished difference Result 29 states and 38 transitions. [2021-08-29 08:49:14,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-08-29 08:49:14,899 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 [2021-08-29 08:49:14,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 08:49:14,903 INFO L225 Difference]: With dead ends: 29 [2021-08-29 08:49:14,904 INFO L226 Difference]: Without dead ends: 12 [2021-08-29 08:49:14,905 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.04ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-08-29 08:49:14,908 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4169.35ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.30ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4334.00ms IncrementalHoareTripleChecker+Time [2021-08-29 08:49:14,910 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 17 Unknown, 0 Unchecked, 0.30ms Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 1 Unknown, 0 Unchecked, 4334.00ms Time] [2021-08-29 08:49:14,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2021-08-29 08:49:14,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2021-08-29 08:49:14,929 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) [2021-08-29 08:49:14,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 13 transitions. [2021-08-29 08:49:14,931 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 13 transitions. Word has length 8 [2021-08-29 08:49:14,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 08:49:14,931 INFO L470 AbstractCegarLoop]: Abstraction has 12 states and 13 transitions. [2021-08-29 08:49:14,931 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) [2021-08-29 08:49:14,932 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 13 transitions. [2021-08-29 08:49:14,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-08-29 08:49:14,932 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 08:49:14,932 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 08:49:14,944 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-08-29 08:49:15,138 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-29 08:49:15,138 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 08:49:15,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 08:49:15,139 INFO L82 PathProgramCache]: Analyzing trace with hash -2105434535, now seen corresponding path program 1 times [2021-08-29 08:49:15,140 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-29 08:49:15,140 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1405600712] [2021-08-29 08:49:15,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 08:49:15,140 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-29 08:49:15,140 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-29 08:49:15,143 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) [2021-08-29 08:49:15,145 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-08-29 08:49:15,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 08:49:15,704 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 2 conjunts are in the unsatisfiable core [2021-08-29 08:49:15,705 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-29 08:49:15,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 08:49:15,804 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-29 08:49:15,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 08:49:15,893 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-29 08:49:15,893 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1405600712] [2021-08-29 08:49:15,893 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1405600712] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-29 08:49:15,893 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-29 08:49:15,894 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-08-29 08:49:15,894 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843126532] [2021-08-29 08:49:15,895 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-29 08:49:15,895 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-29 08:49:15,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-29 08:49:15,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-08-29 08:49:15,896 INFO L87 Difference]: Start difference. First operand 12 states and 13 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 08:49:18,753 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-08-29 08:49:20,976 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-08-29 08:49:21,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 08:49:21,117 INFO L93 Difference]: Finished difference Result 24 states and 27 transitions. [2021-08-29 08:49:21,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-29 08:49:21,118 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-08-29 08:49:21,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 08:49:21,118 INFO L225 Difference]: With dead ends: 24 [2021-08-29 08:49:21,118 INFO L226 Difference]: Without dead ends: 16 [2021-08-29 08:49:21,119 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 36.48ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-08-29 08:49:21,120 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 2 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5014.63ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.70ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5212.47ms IncrementalHoareTripleChecker+Time [2021-08-29 08:49:21,120 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 0 Invalid, 24 Unknown, 0 Unchecked, 0.70ms Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 2 Unknown, 0 Unchecked, 5212.47ms Time] [2021-08-29 08:49:21,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2021-08-29 08:49:21,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 14. [2021-08-29 08:49:21,122 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) [2021-08-29 08:49:21,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions. [2021-08-29 08:49:21,123 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 15 transitions. Word has length 11 [2021-08-29 08:49:21,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 08:49:21,123 INFO L470 AbstractCegarLoop]: Abstraction has 14 states and 15 transitions. [2021-08-29 08:49:21,123 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 08:49:21,123 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2021-08-29 08:49:21,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-08-29 08:49:21,124 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 08:49:21,124 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 08:49:21,146 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-08-29 08:49:21,332 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-29 08:49:21,333 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 08:49:21,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 08:49:21,333 INFO L82 PathProgramCache]: Analyzing trace with hash -2048176233, now seen corresponding path program 1 times [2021-08-29 08:49:21,334 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-29 08:49:21,334 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1196334579] [2021-08-29 08:49:21,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 08:49:21,334 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-29 08:49:21,334 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-29 08:49:21,335 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) [2021-08-29 08:49:21,337 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-08-29 08:49:21,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-29 08:49:21,969 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-29 08:49:22,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-29 08:49:22,663 INFO L133 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2021-08-29 08:49:22,663 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-08-29 08:49:22,664 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-08-29 08:49:22,694 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-08-29 08:49:22,865 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-29 08:49:22,870 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-29 08:49:22,894 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.08 08:49:22 BoogieIcfgContainer [2021-08-29 08:49:22,895 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-29 08:49:22,896 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-29 08:49:22,896 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-29 08:49:22,896 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-29 08:49:22,896 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 08:49:10" (3/4) ... [2021-08-29 08:49:22,898 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-08-29 08:49:22,945 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-29 08:49:22,945 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-29 08:49:22,946 INFO L158 Benchmark]: Toolchain (without parser) took 13151.66ms. Allocated memory was 58.7MB in the beginning and 73.4MB in the end (delta: 14.7MB). Free memory was 37.7MB in the beginning and 41.2MB in the end (delta: -3.5MB). Peak memory consumption was 9.5MB. Max. memory is 16.1GB. [2021-08-29 08:49:22,946 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 58.7MB. Free memory was 40.8MB in the beginning and 40.7MB in the end (delta: 52.9kB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-29 08:49:22,946 INFO L158 Benchmark]: CACSL2BoogieTranslator took 136.94ms. Allocated memory is still 58.7MB. Free memory was 37.6MB in the beginning and 42.4MB in the end (delta: -4.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-08-29 08:49:22,947 INFO L158 Benchmark]: Boogie Procedure Inliner took 53.62ms. Allocated memory was 58.7MB in the beginning and 73.4MB in the end (delta: 14.7MB). Free memory was 42.2MB in the beginning and 56.3MB in the end (delta: -14.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-08-29 08:49:22,947 INFO L158 Benchmark]: Boogie Preprocessor took 38.95ms. Allocated memory is still 73.4MB. Free memory was 56.3MB in the beginning and 54.8MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-29 08:49:22,947 INFO L158 Benchmark]: RCFGBuilder took 193.72ms. Allocated memory is still 73.4MB. Free memory was 54.8MB in the beginning and 45.6MB in the end (delta: 9.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-08-29 08:49:22,947 INFO L158 Benchmark]: TraceAbstraction took 12673.40ms. Allocated memory is still 73.4MB. Free memory was 45.2MB in the beginning and 43.7MB in the end (delta: 1.5MB). Peak memory consumption was 3.9MB. Max. memory is 16.1GB. [2021-08-29 08:49:22,948 INFO L158 Benchmark]: Witness Printer took 49.84ms. Allocated memory is still 73.4MB. Free memory was 43.7MB in the beginning and 41.2MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-08-29 08:49:22,950 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 58.7MB. Free memory was 40.8MB in the beginning and 40.7MB in the end (delta: 52.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 136.94ms. Allocated memory is still 58.7MB. Free memory was 37.6MB in the beginning and 42.4MB in the end (delta: -4.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 53.62ms. Allocated memory was 58.7MB in the beginning and 73.4MB in the end (delta: 14.7MB). Free memory was 42.2MB in the beginning and 56.3MB in the end (delta: -14.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 38.95ms. Allocated memory is still 73.4MB. Free memory was 56.3MB in the beginning and 54.8MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 193.72ms. Allocated memory is still 73.4MB. Free memory was 54.8MB in the beginning and 45.6MB in the end (delta: 9.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 12673.40ms. Allocated memory is still 73.4MB. Free memory was 45.2MB in the beginning and 43.7MB in the end (delta: 1.5MB). Peak memory consumption was 3.9MB. Max. memory is 16.1GB. * Witness Printer took 49.84ms. Allocated memory is still 73.4MB. Free memory was 43.7MB in the beginning and 41.2MB in the end (delta: 2.5MB). 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, 0.00ms ErrorAutomatonConstructionTimeTotal, 0.00ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.00ms ErrorAutomatonConstructionTimeAvg, 0.00ms ErrorAutomatonDifferenceTimeAvg, 0.00ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 12]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L14] float pi = 3.14159 ; VAL [pi=3.141590118408203] [L20] float x = __VERIFIER_nondet_float() ; [L21] float octant = pi/3 ; [L10] COND FALSE !(!cond) VAL [pi=3.141590118408203] [L23] float oddExp = x ; [L24] float evenExp = 1.0 ; [L25] float term = x ; [L26] unsigned int count = 2 ; [L27] int multFactor = 0 ; [L28] int temp ; VAL [pi=3.141590118408203] [L30] COND TRUE 1 [L32] term = term * (x/count) VAL [pi=3.141590118408203] [L33] EXPR (count>>1 % 2 == 0) ? 1 : -1 VAL [pi=3.141590118408203] [L33] multFactor = (count>>1 % 2 == 0) ? 1 : -1 [L35] evenExp = evenExp + multFactor*term [L37] count++ [L39] term = term * (x/count) [L41] oddExp = oddExp + multFactor*term [L43] count++ [L45] temp = __VERIFIER_nondet_int() [L46] COND TRUE temp == 0 VAL [pi=3.141590118408203] [L12] COND TRUE !(cond) VAL [pi=3.141590118408203] [L12] reach_error() VAL [pi=3.141590118408203] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 16 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 12612.83ms, OverallIterations: 3, TraceHistogramMax: 1, EmptinessCheckTime: 6.39ms, AutomataDifference: 9605.95ms, DeadEndRemovalTime: 0.00ms, HoareAnnotationTime: 0.00ms, InitialAbstractionConstructionTime: 5.29ms, PartialOrderReductionTime: 0.00ms, HoareTripleCheckerStatistics: 3 mSolverCounterUnknown, 2 SdHoareTripleChecker+Valid, 9546.46ms IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 9183.98ms Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 7 mSDsCounter, 1 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 37 IncrementalHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1 mSolverCounterUnsat, 0 mSDtfsCounter, 37 mSolverCounterSat, 0.99ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 34 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 36.53ms Time, 0.00ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=16occurred in iteration=0, InterpolantAutomatonStates: 6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.00ms DumpTime, AutomataMinimizationStatistics: 11.89ms AutomataMinimizationTime, 2 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 25.32ms SsaConstructionTime, 1221.41ms SatisfiabilityAnalysisTime, 303.88ms InterpolantComputationTime, 30 NumberOfCodeBlocks, 30 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 34 ConstructedInterpolants, 0 QuantifiedInterpolants, 48 SizeOfPredicates, 1 NumberOfNonLiveVariables, 85 ConjunctsInSsa, 3 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 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 proved your program to be incorrect! [2021-08-29 08:49:23,028 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...