./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/float-newlib/double_req_bl_1252b.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/float-newlib/double_req_bl_1252b.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 a6231fe9945ed231781bef28be0893007c672b08 ....................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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/float-newlib/double_req_bl_1252b.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 a6231fe9945ed231781bef28be0893007c672b08 ....................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 0.2.0-a4ecdab [2020-10-24 23:17:23,287 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-24 23:17:23,291 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-24 23:17:23,332 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-24 23:17:23,333 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-24 23:17:23,334 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-24 23:17:23,336 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-24 23:17:23,338 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-24 23:17:23,340 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-24 23:17:23,341 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-24 23:17:23,342 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-24 23:17:23,343 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-24 23:17:23,344 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-24 23:17:23,345 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-24 23:17:23,346 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-24 23:17:23,348 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-24 23:17:23,349 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-24 23:17:23,350 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-24 23:17:23,352 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-24 23:17:23,361 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-24 23:17:23,364 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-24 23:17:23,365 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-24 23:17:23,367 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-24 23:17:23,368 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-24 23:17:23,371 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-24 23:17:23,371 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-24 23:17:23,372 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-24 23:17:23,373 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-24 23:17:23,373 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-24 23:17:23,374 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-24 23:17:23,375 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-24 23:17:23,376 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-24 23:17:23,376 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-24 23:17:23,377 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-24 23:17:23,379 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-24 23:17:23,379 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-24 23:17:23,380 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-24 23:17:23,380 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-24 23:17:23,380 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-24 23:17:23,382 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-24 23:17:23,382 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-24 23:17:23,383 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-24 23:17:23,413 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-24 23:17:23,413 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-24 23:17:23,414 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-24 23:17:23,415 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-24 23:17:23,415 INFO L138 SettingsManager]: * Use SBE=true [2020-10-24 23:17:23,415 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-24 23:17:23,415 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-24 23:17:23,416 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-24 23:17:23,416 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-24 23:17:23,416 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-24 23:17:23,416 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-24 23:17:23,416 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-24 23:17:23,416 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-24 23:17:23,417 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-24 23:17:23,417 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-24 23:17:23,417 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-24 23:17:23,417 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-24 23:17:23,418 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-24 23:17:23,418 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-24 23:17:23,418 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-24 23:17:23,418 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-24 23:17:23,418 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-24 23:17:23,419 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-24 23:17:23,419 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-24 23:17:23,419 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-24 23:17:23,419 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-24 23:17:23,419 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-24 23:17:23,420 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-24 23:17:23,420 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-24 23:17:23,420 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a6231fe9945ed231781bef28be0893007c672b08 [2020-10-24 23:17:23,847 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-24 23:17:23,899 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-24 23:17:23,904 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-24 23:17:23,905 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-24 23:17:23,907 INFO L275 PluginConnector]: CDTParser initialized [2020-10-24 23:17:23,908 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/double_req_bl_1252b.c [2020-10-24 23:17:23,976 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5d4f36c33/3cad886df1dc46b48e9827d77290cf5c/FLAGb65f46f22 [2020-10-24 23:17:24,516 INFO L306 CDTParser]: Found 1 translation units. [2020-10-24 23:17:24,517 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_1252b.c [2020-10-24 23:17:24,525 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5d4f36c33/3cad886df1dc46b48e9827d77290cf5c/FLAGb65f46f22 [2020-10-24 23:17:24,878 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5d4f36c33/3cad886df1dc46b48e9827d77290cf5c [2020-10-24 23:17:24,883 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-24 23:17:24,897 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-24 23:17:24,901 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-24 23:17:24,902 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-24 23:17:24,906 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-24 23:17:24,911 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 11:17:24" (1/1) ... [2020-10-24 23:17:24,915 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6af2f30e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:17:24, skipping insertion in model container [2020-10-24 23:17:24,915 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 11:17:24" (1/1) ... [2020-10-24 23:17:24,927 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-24 23:17:24,954 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-24 23:17:25,174 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-24 23:17:25,184 INFO L203 MainTranslator]: Completed pre-run [2020-10-24 23:17:25,213 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-24 23:17:25,231 INFO L208 MainTranslator]: Completed translation [2020-10-24 23:17:25,232 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:17:25 WrapperNode [2020-10-24 23:17:25,232 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-24 23:17:25,233 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-24 23:17:25,233 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-24 23:17:25,233 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-24 23:17:25,244 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:17:25" (1/1) ... [2020-10-24 23:17:25,255 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:17:25" (1/1) ... [2020-10-24 23:17:25,286 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-24 23:17:25,287 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-24 23:17:25,287 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-24 23:17:25,287 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-24 23:17:25,296 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:17:25" (1/1) ... [2020-10-24 23:17:25,297 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:17:25" (1/1) ... [2020-10-24 23:17:25,300 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:17:25" (1/1) ... [2020-10-24 23:17:25,300 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:17:25" (1/1) ... [2020-10-24 23:17:25,309 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:17:25" (1/1) ... [2020-10-24 23:17:25,319 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:17:25" (1/1) ... [2020-10-24 23:17:25,322 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:17:25" (1/1) ... [2020-10-24 23:17:25,332 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-24 23:17:25,333 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-24 23:17:25,333 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-24 23:17:25,333 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-24 23:17:25,334 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:17:25" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-24 23:17:25,396 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-24 23:17:25,396 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-24 23:17:25,396 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-24 23:17:25,397 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-24 23:17:25,397 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-24 23:17:25,397 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-24 23:17:25,397 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-24 23:17:26,072 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-24 23:17:26,073 INFO L298 CfgBuilder]: Removed 20 assume(true) statements. [2020-10-24 23:17:26,076 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 11:17:26 BoogieIcfgContainer [2020-10-24 23:17:26,077 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-24 23:17:26,079 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-24 23:17:26,079 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-24 23:17:26,083 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-24 23:17:26,084 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 11:17:24" (1/3) ... [2020-10-24 23:17:26,085 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5752c6fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 11:17:26, skipping insertion in model container [2020-10-24 23:17:26,085 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:17:25" (2/3) ... [2020-10-24 23:17:26,086 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5752c6fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 11:17:26, skipping insertion in model container [2020-10-24 23:17:26,086 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 11:17:26" (3/3) ... [2020-10-24 23:17:26,088 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1252b.c [2020-10-24 23:17:26,105 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-24 23:17:26,110 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-24 23:17:26,126 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-24 23:17:26,170 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-24 23:17:26,171 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-24 23:17:26,171 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-24 23:17:26,172 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-24 23:17:26,172 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-24 23:17:26,172 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-24 23:17:26,173 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-24 23:17:26,173 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-24 23:17:26,192 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2020-10-24 23:17:26,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-24 23:17:26,200 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 23:17:26,201 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 23:17:26,202 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 23:17:26,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 23:17:26,210 INFO L82 PathProgramCache]: Analyzing trace with hash -958075201, now seen corresponding path program 1 times [2020-10-24 23:17:26,221 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-24 23:17:26,221 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160246188] [2020-10-24 23:17:26,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 23:17:26,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 23:17:26,403 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 23:17:26,404 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1160246188] [2020-10-24 23:17:26,405 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-24 23:17:26,405 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-24 23:17:26,407 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110257618] [2020-10-24 23:17:26,413 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-24 23:17:26,414 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-24 23:17:26,428 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-24 23:17:26,429 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-24 23:17:26,431 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 2 states. [2020-10-24 23:17:26,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 23:17:26,451 INFO L93 Difference]: Finished difference Result 63 states and 99 transitions. [2020-10-24 23:17:26,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-24 23:17:26,452 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-10-24 23:17:26,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 23:17:26,463 INFO L225 Difference]: With dead ends: 63 [2020-10-24 23:17:26,464 INFO L226 Difference]: Without dead ends: 29 [2020-10-24 23:17:26,467 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-24 23:17:26,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-10-24 23:17:26,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-10-24 23:17:26,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-24 23:17:26,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 40 transitions. [2020-10-24 23:17:26,506 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 40 transitions. Word has length 10 [2020-10-24 23:17:26,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 23:17:26,507 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 40 transitions. [2020-10-24 23:17:26,507 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-24 23:17:26,507 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 40 transitions. [2020-10-24 23:17:26,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-24 23:17:26,508 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 23:17:26,509 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 23:17:26,509 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-24 23:17:26,509 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 23:17:26,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 23:17:26,510 INFO L82 PathProgramCache]: Analyzing trace with hash 1001584898, now seen corresponding path program 1 times [2020-10-24 23:17:26,511 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-24 23:17:26,511 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1243962095] [2020-10-24 23:17:26,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 23:17:26,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 23:17:26,609 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 23:17:26,610 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1243962095] [2020-10-24 23:17:26,611 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-24 23:17:26,611 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-24 23:17:26,611 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603337161] [2020-10-24 23:17:26,613 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-24 23:17:26,613 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-24 23:17:26,614 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-24 23:17:26,614 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-24 23:17:26,614 INFO L87 Difference]: Start difference. First operand 29 states and 40 transitions. Second operand 4 states. [2020-10-24 23:17:26,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 23:17:26,682 INFO L93 Difference]: Finished difference Result 53 states and 67 transitions. [2020-10-24 23:17:26,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-24 23:17:26,683 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-10-24 23:17:26,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 23:17:26,685 INFO L225 Difference]: With dead ends: 53 [2020-10-24 23:17:26,685 INFO L226 Difference]: Without dead ends: 44 [2020-10-24 23:17:26,686 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-24 23:17:26,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-10-24 23:17:26,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 31. [2020-10-24 23:17:26,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-10-24 23:17:26,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 42 transitions. [2020-10-24 23:17:26,693 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 42 transitions. Word has length 11 [2020-10-24 23:17:26,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 23:17:26,694 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 42 transitions. [2020-10-24 23:17:26,694 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-24 23:17:26,694 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 42 transitions. [2020-10-24 23:17:26,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-24 23:17:26,695 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 23:17:26,695 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 23:17:26,696 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-24 23:17:26,696 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 23:17:26,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 23:17:26,697 INFO L82 PathProgramCache]: Analyzing trace with hash 502201410, now seen corresponding path program 1 times [2020-10-24 23:17:26,697 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-24 23:17:26,697 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [958772323] [2020-10-24 23:17:26,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 23:17:26,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 23:17:26,757 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 23:17:26,758 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [958772323] [2020-10-24 23:17:26,758 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-24 23:17:26,758 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-24 23:17:26,758 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018329980] [2020-10-24 23:17:26,759 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-24 23:17:26,759 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-24 23:17:26,760 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-24 23:17:26,760 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-24 23:17:26,761 INFO L87 Difference]: Start difference. First operand 31 states and 42 transitions. Second operand 4 states. [2020-10-24 23:17:26,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 23:17:26,820 INFO L93 Difference]: Finished difference Result 55 states and 69 transitions. [2020-10-24 23:17:26,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-24 23:17:26,821 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-10-24 23:17:26,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 23:17:26,822 INFO L225 Difference]: With dead ends: 55 [2020-10-24 23:17:26,822 INFO L226 Difference]: Without dead ends: 46 [2020-10-24 23:17:26,823 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-24 23:17:26,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-10-24 23:17:26,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 31. [2020-10-24 23:17:26,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-10-24 23:17:26,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 42 transitions. [2020-10-24 23:17:26,829 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 42 transitions. Word has length 12 [2020-10-24 23:17:26,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 23:17:26,830 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 42 transitions. [2020-10-24 23:17:26,830 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-24 23:17:26,830 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 42 transitions. [2020-10-24 23:17:26,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-24 23:17:26,831 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 23:17:26,831 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 23:17:26,832 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-24 23:17:26,832 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 23:17:26,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 23:17:26,833 INFO L82 PathProgramCache]: Analyzing trace with hash -1951233721, now seen corresponding path program 1 times [2020-10-24 23:17:26,833 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-24 23:17:26,833 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205079976] [2020-10-24 23:17:26,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 23:17:26,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 23:17:26,891 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 23:17:26,891 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205079976] [2020-10-24 23:17:26,891 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-24 23:17:26,891 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-24 23:17:26,892 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698329901] [2020-10-24 23:17:26,892 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-24 23:17:26,892 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-24 23:17:26,893 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-24 23:17:26,894 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-24 23:17:26,894 INFO L87 Difference]: Start difference. First operand 31 states and 42 transitions. Second operand 4 states. [2020-10-24 23:17:26,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 23:17:26,950 INFO L93 Difference]: Finished difference Result 57 states and 71 transitions. [2020-10-24 23:17:26,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-24 23:17:26,951 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-10-24 23:17:26,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 23:17:26,952 INFO L225 Difference]: With dead ends: 57 [2020-10-24 23:17:26,952 INFO L226 Difference]: Without dead ends: 48 [2020-10-24 23:17:26,953 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-24 23:17:26,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-10-24 23:17:26,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 31. [2020-10-24 23:17:26,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-10-24 23:17:26,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 42 transitions. [2020-10-24 23:17:26,959 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 42 transitions. Word has length 13 [2020-10-24 23:17:26,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 23:17:26,960 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 42 transitions. [2020-10-24 23:17:26,960 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-24 23:17:26,960 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 42 transitions. [2020-10-24 23:17:26,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-24 23:17:26,961 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 23:17:26,961 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 23:17:26,962 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-24 23:17:26,962 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 23:17:26,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 23:17:26,963 INFO L82 PathProgramCache]: Analyzing trace with hash -555760345, now seen corresponding path program 1 times [2020-10-24 23:17:26,963 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-24 23:17:26,963 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1080673482] [2020-10-24 23:17:26,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 23:17:26,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 23:17:27,033 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 23:17:27,033 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1080673482] [2020-10-24 23:17:27,034 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-24 23:17:27,034 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-24 23:17:27,034 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858231591] [2020-10-24 23:17:27,035 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-24 23:17:27,035 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-24 23:17:27,035 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-24 23:17:27,036 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-24 23:17:27,036 INFO L87 Difference]: Start difference. First operand 31 states and 42 transitions. Second operand 4 states. [2020-10-24 23:17:27,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 23:17:27,096 INFO L93 Difference]: Finished difference Result 55 states and 69 transitions. [2020-10-24 23:17:27,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-24 23:17:27,096 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-10-24 23:17:27,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 23:17:27,097 INFO L225 Difference]: With dead ends: 55 [2020-10-24 23:17:27,098 INFO L226 Difference]: Without dead ends: 46 [2020-10-24 23:17:27,098 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-24 23:17:27,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-10-24 23:17:27,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 31. [2020-10-24 23:17:27,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-10-24 23:17:27,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 42 transitions. [2020-10-24 23:17:27,104 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 42 transitions. Word has length 14 [2020-10-24 23:17:27,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 23:17:27,104 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 42 transitions. [2020-10-24 23:17:27,104 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-24 23:17:27,104 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 42 transitions. [2020-10-24 23:17:27,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-24 23:17:27,105 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 23:17:27,105 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 23:17:27,105 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-24 23:17:27,106 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 23:17:27,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 23:17:27,106 INFO L82 PathProgramCache]: Analyzing trace with hash 1219247017, now seen corresponding path program 1 times [2020-10-24 23:17:27,107 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-24 23:17:27,107 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373136346] [2020-10-24 23:17:27,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 23:17:27,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-24 23:17:27,163 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-24 23:17:27,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-24 23:17:27,213 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-24 23:17:27,253 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-24 23:17:27,254 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-24 23:17:27,254 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-24 23:17:27,286 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 11:17:27 BoogieIcfgContainer [2020-10-24 23:17:27,287 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-24 23:17:27,288 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-24 23:17:27,288 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-24 23:17:27,288 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-24 23:17:27,289 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 11:17:26" (3/4) ... [2020-10-24 23:17:27,293 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-24 23:17:27,293 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-24 23:17:27,296 INFO L168 Benchmark]: Toolchain (without parser) took 2409.30 ms. Allocated memory was 37.7 MB in the beginning and 56.6 MB in the end (delta: 18.9 MB). Free memory was 16.2 MB in the beginning and 36.8 MB in the end (delta: -20.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-24 23:17:27,297 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 37.7 MB. Free memory was 24.9 MB in the beginning and 24.8 MB in the end (delta: 32.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-24 23:17:27,298 INFO L168 Benchmark]: CACSL2BoogieTranslator took 330.81 ms. Allocated memory was 37.7 MB in the beginning and 46.1 MB in the end (delta: 8.4 MB). Free memory was 23.1 MB in the beginning and 23.3 MB in the end (delta: -186.3 kB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-10-24 23:17:27,299 INFO L168 Benchmark]: Boogie Procedure Inliner took 53.16 ms. Allocated memory is still 46.1 MB. Free memory was 23.3 MB in the beginning and 31.2 MB in the end (delta: -7.9 MB). Peak memory consumption was 4.8 MB. Max. memory is 16.1 GB. [2020-10-24 23:17:27,300 INFO L168 Benchmark]: Boogie Preprocessor took 44.76 ms. Allocated memory is still 46.1 MB. Free memory was 31.2 MB in the beginning and 29.8 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-24 23:17:27,301 INFO L168 Benchmark]: RCFGBuilder took 744.39 ms. Allocated memory is still 46.1 MB. Free memory was 29.6 MB in the beginning and 28.9 MB in the end (delta: 737.0 kB). Peak memory consumption was 11.9 MB. Max. memory is 16.1 GB. [2020-10-24 23:17:27,302 INFO L168 Benchmark]: TraceAbstraction took 1208.25 ms. Allocated memory was 46.1 MB in the beginning and 56.6 MB in the end (delta: 10.5 MB). Free memory was 28.3 MB in the beginning and 37.3 MB in the end (delta: -9.0 MB). Peak memory consumption was 20.2 MB. Max. memory is 16.1 GB. [2020-10-24 23:17:27,303 INFO L168 Benchmark]: Witness Printer took 5.70 ms. Allocated memory is still 56.6 MB. Free memory was 37.3 MB in the beginning and 36.8 MB in the end (delta: 438.4 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-24 23:17:27,308 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 37.7 MB. Free memory was 24.9 MB in the beginning and 24.8 MB in the end (delta: 32.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 330.81 ms. Allocated memory was 37.7 MB in the beginning and 46.1 MB in the end (delta: 8.4 MB). Free memory was 23.1 MB in the beginning and 23.3 MB in the end (delta: -186.3 kB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 53.16 ms. Allocated memory is still 46.1 MB. Free memory was 23.3 MB in the beginning and 31.2 MB in the end (delta: -7.9 MB). Peak memory consumption was 4.8 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 44.76 ms. Allocated memory is still 46.1 MB. Free memory was 31.2 MB in the beginning and 29.8 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 744.39 ms. Allocated memory is still 46.1 MB. Free memory was 29.6 MB in the beginning and 28.9 MB in the end (delta: 737.0 kB). Peak memory consumption was 11.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1208.25 ms. Allocated memory was 46.1 MB in the beginning and 56.6 MB in the end (delta: 10.5 MB). Free memory was 28.3 MB in the beginning and 37.3 MB in the end (delta: -9.0 MB). Peak memory consumption was 20.2 MB. Max. memory is 16.1 GB. * Witness Printer took 5.70 ms. Allocated memory is still 56.6 MB. Free memory was 37.3 MB in the beginning and 36.8 MB in the end (delta: 438.4 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 3]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 86, overapproximation of someUnaryDOUBLEoperation at line 82. Possible FailurePath: [L81] double x = 0.0; [L82] double y = -0.0; [L26] __uint32_t msw, lsw; [L29] ieee_double_shape_type ew_u; [L30] ew_u.value = (x) [L31] EXPR ew_u.parts.msw [L31] (msw) = ew_u.parts.msw [L32] EXPR ew_u.parts.lsw [L32] (lsw) = ew_u.parts.lsw [L35-L36] COND FALSE !((msw == 0x00000000 && lsw == 0x00000000) || (msw == 0x80000000 && lsw == 0x00000000)) [L38-L39] COND FALSE !((msw >= 0x00100000 && msw <= 0x7fefffff) || (msw >= 0x80100000 && msw <= 0xffefffff)) [L41-L42] COND FALSE !(( msw <= 0x000fffff) || (msw >= 0x80000000 && msw <= 0x800fffff)) [L45-L46] COND FALSE !((msw == 0x7ff00000 && lsw == 0x00000000) || (msw == 0xfff00000 && lsw == 0x00000000)) [L49] return 0; [L54] COND TRUE __fpclassify_double(x) == 0 [L55] return y; [L83] double res = fmax_double(x, y); [L86] EXPR res == 0.0 && __signbit_double(res) == 0 [L86] COND TRUE !(res == 0.0 && __signbit_double(res) == 0) [L3] __assert_fail("0", "double_req_bl_1252b.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 33 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.0s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 251 SDtfs, 64 SDslu, 298 SDs, 0 SdLazy, 84 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 22 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=33occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 60 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 74 NumberOfCodeBlocks, 74 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 55 ConstructedInterpolants, 0 QuantifiedInterpolants, 799 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 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 Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.0-a4ecdab [2020-10-24 23:17:29,962 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-24 23:17:29,966 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-24 23:17:30,021 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-24 23:17:30,021 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-24 23:17:30,027 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-24 23:17:30,029 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-24 23:17:30,037 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-24 23:17:30,041 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-24 23:17:30,047 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-24 23:17:30,049 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-24 23:17:30,054 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-24 23:17:30,054 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-24 23:17:30,058 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-24 23:17:30,060 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-24 23:17:30,061 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-24 23:17:30,063 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-24 23:17:30,066 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-24 23:17:30,070 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-24 23:17:30,079 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-24 23:17:30,081 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-24 23:17:30,083 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-24 23:17:30,085 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-24 23:17:30,086 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-24 23:17:30,095 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-24 23:17:30,096 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-24 23:17:30,096 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-24 23:17:30,099 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-24 23:17:30,099 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-24 23:17:30,101 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-24 23:17:30,101 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-24 23:17:30,102 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-24 23:17:30,105 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-24 23:17:30,106 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-24 23:17:30,107 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-24 23:17:30,107 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-24 23:17:30,108 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-24 23:17:30,108 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-24 23:17:30,109 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-24 23:17:30,111 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-24 23:17:30,112 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-24 23:17:30,113 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-10-24 23:17:30,181 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-24 23:17:30,181 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-24 23:17:30,185 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-24 23:17:30,185 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-24 23:17:30,186 INFO L138 SettingsManager]: * Use SBE=true [2020-10-24 23:17:30,186 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-24 23:17:30,186 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-24 23:17:30,187 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-24 23:17:30,187 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-24 23:17:30,188 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-24 23:17:30,189 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-24 23:17:30,190 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-24 23:17:30,190 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-10-24 23:17:30,190 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-10-24 23:17:30,190 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-24 23:17:30,191 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-24 23:17:30,191 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-24 23:17:30,191 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-24 23:17:30,192 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-24 23:17:30,192 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-24 23:17:30,193 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-24 23:17:30,193 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-24 23:17:30,194 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-24 23:17:30,194 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-24 23:17:30,194 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-24 23:17:30,195 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-24 23:17:30,195 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-10-24 23:17:30,195 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-10-24 23:17:30,195 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-24 23:17:30,196 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-24 23:17:30,196 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-24 23:17:30,196 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a6231fe9945ed231781bef28be0893007c672b08 [2020-10-24 23:17:30,624 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-24 23:17:30,655 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-24 23:17:30,660 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-24 23:17:30,662 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-24 23:17:30,663 INFO L275 PluginConnector]: CDTParser initialized [2020-10-24 23:17:30,664 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/double_req_bl_1252b.c [2020-10-24 23:17:30,749 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fdd64814c/c59c1190584d4343b0000c34d890aaeb/FLAG335851185 [2020-10-24 23:17:31,369 INFO L306 CDTParser]: Found 1 translation units. [2020-10-24 23:17:31,370 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_1252b.c [2020-10-24 23:17:31,384 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fdd64814c/c59c1190584d4343b0000c34d890aaeb/FLAG335851185 [2020-10-24 23:17:31,400 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fdd64814c/c59c1190584d4343b0000c34d890aaeb [2020-10-24 23:17:31,403 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-24 23:17:31,410 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-24 23:17:31,412 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-24 23:17:31,413 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-24 23:17:31,417 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-24 23:17:31,418 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 11:17:31" (1/1) ... [2020-10-24 23:17:31,422 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@bc480d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:17:31, skipping insertion in model container [2020-10-24 23:17:31,422 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 11:17:31" (1/1) ... [2020-10-24 23:17:31,431 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-24 23:17:31,449 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-24 23:17:31,761 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-24 23:17:31,783 INFO L203 MainTranslator]: Completed pre-run [2020-10-24 23:17:31,839 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-24 23:17:31,874 INFO L208 MainTranslator]: Completed translation [2020-10-24 23:17:31,875 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:17:31 WrapperNode [2020-10-24 23:17:31,875 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-24 23:17:31,877 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-24 23:17:31,877 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-24 23:17:31,879 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-24 23:17:31,888 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:17:31" (1/1) ... [2020-10-24 23:17:31,915 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:17:31" (1/1) ... [2020-10-24 23:17:31,960 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-24 23:17:31,961 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-24 23:17:31,961 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-24 23:17:31,962 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-24 23:17:31,972 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:17:31" (1/1) ... [2020-10-24 23:17:31,972 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:17:31" (1/1) ... [2020-10-24 23:17:31,993 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:17:31" (1/1) ... [2020-10-24 23:17:31,994 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:17:31" (1/1) ... [2020-10-24 23:17:32,015 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:17:31" (1/1) ... [2020-10-24 23:17:32,025 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:17:31" (1/1) ... [2020-10-24 23:17:32,032 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:17:31" (1/1) ... [2020-10-24 23:17:32,038 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-24 23:17:32,042 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-24 23:17:32,042 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-24 23:17:32,042 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-24 23:17:32,043 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:17:31" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-24 23:17:32,140 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2020-10-24 23:17:32,142 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-10-24 23:17:32,142 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-24 23:17:32,142 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-10-24 23:17:32,142 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-24 23:17:32,142 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-24 23:17:32,142 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-24 23:17:32,640 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-24 23:17:32,640 INFO L298 CfgBuilder]: Removed 20 assume(true) statements. [2020-10-24 23:17:32,642 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 11:17:32 BoogieIcfgContainer [2020-10-24 23:17:32,643 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-24 23:17:32,645 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-24 23:17:32,645 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-24 23:17:32,649 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-24 23:17:32,649 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 11:17:31" (1/3) ... [2020-10-24 23:17:32,650 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2bae4f1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 11:17:32, skipping insertion in model container [2020-10-24 23:17:32,650 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:17:31" (2/3) ... [2020-10-24 23:17:32,651 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2bae4f1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 11:17:32, skipping insertion in model container [2020-10-24 23:17:32,651 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 11:17:32" (3/3) ... [2020-10-24 23:17:32,652 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1252b.c [2020-10-24 23:17:32,665 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-24 23:17:32,669 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-24 23:17:32,683 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-24 23:17:32,712 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-24 23:17:32,712 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-24 23:17:32,712 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-24 23:17:32,712 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-24 23:17:32,713 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-24 23:17:32,713 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-24 23:17:32,713 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-24 23:17:32,713 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-24 23:17:32,728 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2020-10-24 23:17:32,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-24 23:17:32,734 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 23:17:32,735 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 23:17:32,735 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 23:17:32,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 23:17:32,742 INFO L82 PathProgramCache]: Analyzing trace with hash -958075201, now seen corresponding path program 1 times [2020-10-24 23:17:32,755 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-24 23:17:32,756 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [484534415] [2020-10-24 23:17:32,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2020-10-24 23:17:32,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 23:17:32,862 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 1 conjunts are in the unsatisfiable core [2020-10-24 23:17:32,867 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-24 23:17:32,886 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 23:17:32,886 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-24 23:17:32,891 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 23:17:32,892 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [484534415] [2020-10-24 23:17:32,893 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-24 23:17:32,893 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-10-24 23:17:32,894 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699899977] [2020-10-24 23:17:32,899 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-24 23:17:32,901 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-24 23:17:32,915 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-24 23:17:32,916 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-24 23:17:32,919 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 2 states. [2020-10-24 23:17:32,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 23:17:32,940 INFO L93 Difference]: Finished difference Result 63 states and 99 transitions. [2020-10-24 23:17:32,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-24 23:17:32,942 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-10-24 23:17:32,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 23:17:32,953 INFO L225 Difference]: With dead ends: 63 [2020-10-24 23:17:32,953 INFO L226 Difference]: Without dead ends: 29 [2020-10-24 23:17:32,956 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-24 23:17:32,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-10-24 23:17:32,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-10-24 23:17:32,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-24 23:17:32,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 40 transitions. [2020-10-24 23:17:32,994 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 40 transitions. Word has length 10 [2020-10-24 23:17:32,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 23:17:32,995 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 40 transitions. [2020-10-24 23:17:32,995 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-24 23:17:32,995 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 40 transitions. [2020-10-24 23:17:32,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-24 23:17:32,996 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 23:17:32,996 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 23:17:33,209 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-10-24 23:17:33,210 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 23:17:33,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 23:17:33,212 INFO L82 PathProgramCache]: Analyzing trace with hash 1001584898, now seen corresponding path program 1 times [2020-10-24 23:17:33,213 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-24 23:17:33,213 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [233106561] [2020-10-24 23:17:33,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2020-10-24 23:17:33,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 23:17:33,310 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 3 conjunts are in the unsatisfiable core [2020-10-24 23:17:33,312 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-24 23:17:33,349 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 23:17:33,350 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-24 23:17:33,389 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 23:17:33,391 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [233106561] [2020-10-24 23:17:33,391 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-24 23:17:33,391 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2020-10-24 23:17:33,392 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711003862] [2020-10-24 23:17:33,394 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-24 23:17:33,394 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-24 23:17:33,396 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-24 23:17:33,396 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-24 23:17:33,396 INFO L87 Difference]: Start difference. First operand 29 states and 40 transitions. Second operand 6 states. [2020-10-24 23:17:33,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 23:17:33,579 INFO L93 Difference]: Finished difference Result 68 states and 85 transitions. [2020-10-24 23:17:33,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-24 23:17:33,580 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2020-10-24 23:17:33,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 23:17:33,581 INFO L225 Difference]: With dead ends: 68 [2020-10-24 23:17:33,581 INFO L226 Difference]: Without dead ends: 59 [2020-10-24 23:17:33,582 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-24 23:17:33,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-10-24 23:17:33,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 31. [2020-10-24 23:17:33,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-10-24 23:17:33,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 42 transitions. [2020-10-24 23:17:33,590 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 42 transitions. Word has length 11 [2020-10-24 23:17:33,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 23:17:33,590 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 42 transitions. [2020-10-24 23:17:33,590 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-24 23:17:33,591 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 42 transitions. [2020-10-24 23:17:33,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-24 23:17:33,591 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 23:17:33,592 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 23:17:33,806 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-10-24 23:17:33,806 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 23:17:33,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 23:17:33,808 INFO L82 PathProgramCache]: Analyzing trace with hash 1219247017, now seen corresponding path program 1 times [2020-10-24 23:17:33,810 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-24 23:17:33,811 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [698151412] [2020-10-24 23:17:33,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2020-10-24 23:17:33,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 23:17:33,893 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-24 23:17:33,897 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-24 23:17:33,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 23:17:33,974 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-24 23:17:34,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 23:17:34,016 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [698151412] [2020-10-24 23:17:34,016 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-24 23:17:34,016 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2020-10-24 23:17:34,016 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546199212] [2020-10-24 23:17:34,017 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-24 23:17:34,018 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-24 23:17:34,018 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-24 23:17:34,019 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-24 23:17:34,019 INFO L87 Difference]: Start difference. First operand 31 states and 42 transitions. Second operand 6 states. [2020-10-24 23:17:34,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 23:17:34,171 INFO L93 Difference]: Finished difference Result 52 states and 69 transitions. [2020-10-24 23:17:34,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-24 23:17:34,171 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2020-10-24 23:17:34,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 23:17:34,172 INFO L225 Difference]: With dead ends: 52 [2020-10-24 23:17:34,172 INFO L226 Difference]: Without dead ends: 28 [2020-10-24 23:17:34,173 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-24 23:17:34,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-10-24 23:17:34,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-10-24 23:17:34,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-10-24 23:17:34,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 35 transitions. [2020-10-24 23:17:34,178 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 35 transitions. Word has length 14 [2020-10-24 23:17:34,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 23:17:34,179 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 35 transitions. [2020-10-24 23:17:34,179 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-24 23:17:34,179 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 35 transitions. [2020-10-24 23:17:34,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-24 23:17:34,180 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 23:17:34,180 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 23:17:34,398 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-10-24 23:17:34,399 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 23:17:34,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 23:17:34,401 INFO L82 PathProgramCache]: Analyzing trace with hash 1012446717, now seen corresponding path program 1 times [2020-10-24 23:17:34,402 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-24 23:17:34,402 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [415529860] [2020-10-24 23:17:34,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2020-10-24 23:17:34,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 23:17:34,514 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 3 conjunts are in the unsatisfiable core [2020-10-24 23:17:34,517 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-24 23:17:34,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 23:17:34,535 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-24 23:17:34,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 23:17:34,559 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [415529860] [2020-10-24 23:17:34,560 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-24 23:17:34,560 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2020-10-24 23:17:34,560 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819381373] [2020-10-24 23:17:34,561 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-24 23:17:34,561 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-24 23:17:34,562 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-24 23:17:34,562 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-24 23:17:34,563 INFO L87 Difference]: Start difference. First operand 28 states and 35 transitions. Second operand 6 states. [2020-10-24 23:17:34,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 23:17:34,656 INFO L93 Difference]: Finished difference Result 65 states and 76 transitions. [2020-10-24 23:17:34,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-24 23:17:34,657 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2020-10-24 23:17:34,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 23:17:34,659 INFO L225 Difference]: With dead ends: 65 [2020-10-24 23:17:34,659 INFO L226 Difference]: Without dead ends: 56 [2020-10-24 23:17:34,660 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-24 23:17:34,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-10-24 23:17:34,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 30. [2020-10-24 23:17:34,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-10-24 23:17:34,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 37 transitions. [2020-10-24 23:17:34,666 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 37 transitions. Word has length 16 [2020-10-24 23:17:34,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 23:17:34,667 INFO L481 AbstractCegarLoop]: Abstraction has 30 states and 37 transitions. [2020-10-24 23:17:34,667 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-24 23:17:34,667 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 37 transitions. [2020-10-24 23:17:34,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-24 23:17:34,668 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 23:17:34,668 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 23:17:34,890 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-10-24 23:17:34,891 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 23:17:34,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 23:17:34,892 INFO L82 PathProgramCache]: Analyzing trace with hash -414082333, now seen corresponding path program 1 times [2020-10-24 23:17:34,893 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-24 23:17:34,893 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [707415881] [2020-10-24 23:17:34,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 6 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2020-10-24 23:17:34,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 23:17:34,996 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-24 23:17:34,998 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-24 23:17:35,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 23:17:35,030 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-24 23:17:35,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 23:17:35,085 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [707415881] [2020-10-24 23:17:35,085 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-24 23:17:35,085 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2020-10-24 23:17:35,086 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687562978] [2020-10-24 23:17:35,087 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-24 23:17:35,087 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-24 23:17:35,088 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-24 23:17:35,088 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-24 23:17:35,089 INFO L87 Difference]: Start difference. First operand 30 states and 37 transitions. Second operand 4 states. [2020-10-24 23:17:35,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 23:17:35,114 INFO L93 Difference]: Finished difference Result 40 states and 47 transitions. [2020-10-24 23:17:35,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-24 23:17:35,117 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2020-10-24 23:17:35,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 23:17:35,118 INFO L225 Difference]: With dead ends: 40 [2020-10-24 23:17:35,118 INFO L226 Difference]: Without dead ends: 30 [2020-10-24 23:17:35,119 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 30 SyntacticMatches, 2 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-24 23:17:35,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-10-24 23:17:35,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2020-10-24 23:17:35,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-10-24 23:17:35,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 36 transitions. [2020-10-24 23:17:35,132 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 36 transitions. Word has length 18 [2020-10-24 23:17:35,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 23:17:35,134 INFO L481 AbstractCegarLoop]: Abstraction has 30 states and 36 transitions. [2020-10-24 23:17:35,134 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-24 23:17:35,134 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 36 transitions. [2020-10-24 23:17:35,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-24 23:17:35,135 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 23:17:35,136 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 23:17:35,336 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2020-10-24 23:17:35,337 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 23:17:35,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 23:17:35,338 INFO L82 PathProgramCache]: Analyzing trace with hash -356824031, now seen corresponding path program 1 times [2020-10-24 23:17:35,339 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-24 23:17:35,339 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [182847691] [2020-10-24 23:17:35,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 7 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with mathsat -unsat_core_generation=3 [2020-10-24 23:17:35,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 23:17:35,456 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-24 23:17:35,458 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-24 23:17:35,506 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 23:17:35,507 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-24 23:17:35,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 23:17:35,569 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [182847691] [2020-10-24 23:17:35,569 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-24 23:17:35,570 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 9 [2020-10-24 23:17:35,570 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406185252] [2020-10-24 23:17:35,571 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-24 23:17:35,571 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-24 23:17:35,572 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-24 23:17:35,572 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-24 23:17:35,572 INFO L87 Difference]: Start difference. First operand 30 states and 36 transitions. Second operand 9 states. [2020-10-24 23:17:35,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 23:17:35,692 INFO L93 Difference]: Finished difference Result 42 states and 47 transitions. [2020-10-24 23:17:35,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-24 23:17:35,693 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 18 [2020-10-24 23:17:35,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 23:17:35,694 INFO L225 Difference]: With dead ends: 42 [2020-10-24 23:17:35,694 INFO L226 Difference]: Without dead ends: 39 [2020-10-24 23:17:35,694 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2020-10-24 23:17:35,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-10-24 23:17:35,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 32. [2020-10-24 23:17:35,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-10-24 23:17:35,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 38 transitions. [2020-10-24 23:17:35,700 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 38 transitions. Word has length 18 [2020-10-24 23:17:35,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 23:17:35,700 INFO L481 AbstractCegarLoop]: Abstraction has 32 states and 38 transitions. [2020-10-24 23:17:35,700 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-24 23:17:35,700 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 38 transitions. [2020-10-24 23:17:35,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-24 23:17:35,701 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 23:17:35,701 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 23:17:35,912 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 mathsat -unsat_core_generation=3 [2020-10-24 23:17:35,913 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 23:17:35,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 23:17:35,914 INFO L82 PathProgramCache]: Analyzing trace with hash -208358251, now seen corresponding path program 1 times [2020-10-24 23:17:35,915 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-24 23:17:35,915 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [781140116] [2020-10-24 23:17:35,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 8 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with mathsat -unsat_core_generation=3 [2020-10-24 23:17:36,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 23:17:36,032 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-24 23:17:36,036 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-24 23:17:36,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 23:17:36,101 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-24 23:17:36,128 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-24 23:17:36,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 23:17:36,277 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [781140116] [2020-10-24 23:17:36,277 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-24 23:17:36,278 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2020-10-24 23:17:36,278 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612002163] [2020-10-24 23:17:36,278 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-24 23:17:36,278 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-24 23:17:36,279 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-24 23:17:36,279 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-24 23:17:36,279 INFO L87 Difference]: Start difference. First operand 32 states and 38 transitions. Second operand 8 states. [2020-10-24 23:17:36,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 23:17:36,447 INFO L93 Difference]: Finished difference Result 45 states and 50 transitions. [2020-10-24 23:17:36,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-24 23:17:36,449 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-10-24 23:17:36,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 23:17:36,450 INFO L225 Difference]: With dead ends: 45 [2020-10-24 23:17:36,450 INFO L226 Difference]: Without dead ends: 27 [2020-10-24 23:17:36,453 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-10-24 23:17:36,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-10-24 23:17:36,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2020-10-24 23:17:36,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-10-24 23:17:36,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions. [2020-10-24 23:17:36,463 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 19 [2020-10-24 23:17:36,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 23:17:36,463 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 28 transitions. [2020-10-24 23:17:36,463 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-24 23:17:36,463 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 28 transitions. [2020-10-24 23:17:36,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-24 23:17:36,464 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 23:17:36,464 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 23:17:36,665 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 mathsat -unsat_core_generation=3 [2020-10-24 23:17:36,666 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 23:17:36,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 23:17:36,667 INFO L82 PathProgramCache]: Analyzing trace with hash -1524231306, now seen corresponding path program 1 times [2020-10-24 23:17:36,667 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-24 23:17:36,669 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [521924506] [2020-10-24 23:17:36,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 9 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with mathsat -unsat_core_generation=3 [2020-10-24 23:17:36,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-24 23:17:36,938 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-24 23:17:37,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-24 23:17:37,190 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-24 23:17:37,252 INFO L173 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2020-10-24 23:17:37,252 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-24 23:17:37,452 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 mathsat -unsat_core_generation=3 [2020-10-24 23:17:37,497 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 11:17:37 BoogieIcfgContainer [2020-10-24 23:17:37,497 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-24 23:17:37,498 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-24 23:17:37,498 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-24 23:17:37,498 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-24 23:17:37,498 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 11:17:32" (3/4) ... [2020-10-24 23:17:37,501 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-10-24 23:17:37,558 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-24 23:17:37,558 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-24 23:17:37,560 INFO L168 Benchmark]: Toolchain (without parser) took 6154.16 ms. Allocated memory was 48.2 MB in the beginning and 73.4 MB in the end (delta: 25.2 MB). Free memory was 25.0 MB in the beginning and 42.9 MB in the end (delta: -17.8 MB). Peak memory consumption was 9.1 MB. Max. memory is 16.1 GB. [2020-10-24 23:17:37,561 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 48.2 MB. Free memory was 30.8 MB in the beginning and 30.8 MB in the end (delta: 33.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-24 23:17:37,562 INFO L168 Benchmark]: CACSL2BoogieTranslator took 463.20 ms. Allocated memory is still 48.2 MB. Free memory was 24.3 MB in the beginning and 26.5 MB in the end (delta: -2.2 MB). Peak memory consumption was 5.5 MB. Max. memory is 16.1 GB. [2020-10-24 23:17:37,562 INFO L168 Benchmark]: Boogie Procedure Inliner took 82.96 ms. Allocated memory is still 48.2 MB. Free memory was 26.5 MB in the beginning and 24.6 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-24 23:17:37,563 INFO L168 Benchmark]: Boogie Preprocessor took 76.98 ms. Allocated memory is still 48.2 MB. Free memory was 24.6 MB in the beginning and 22.9 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-24 23:17:37,564 INFO L168 Benchmark]: RCFGBuilder took 600.74 ms. Allocated memory was 48.2 MB in the beginning and 60.8 MB in the end (delta: 12.6 MB). Free memory was 22.9 MB in the beginning and 36.9 MB in the end (delta: -14.1 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2020-10-24 23:17:37,564 INFO L168 Benchmark]: TraceAbstraction took 4852.29 ms. Allocated memory was 60.8 MB in the beginning and 73.4 MB in the end (delta: 12.6 MB). Free memory was 36.4 MB in the beginning and 45.3 MB in the end (delta: -8.9 MB). Peak memory consumption was 3.6 MB. Max. memory is 16.1 GB. [2020-10-24 23:17:37,565 INFO L168 Benchmark]: Witness Printer took 60.34 ms. Allocated memory is still 73.4 MB. Free memory was 45.3 MB in the beginning and 42.9 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-24 23:17:37,569 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 48.2 MB. Free memory was 30.8 MB in the beginning and 30.8 MB in the end (delta: 33.7 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 463.20 ms. Allocated memory is still 48.2 MB. Free memory was 24.3 MB in the beginning and 26.5 MB in the end (delta: -2.2 MB). Peak memory consumption was 5.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 82.96 ms. Allocated memory is still 48.2 MB. Free memory was 26.5 MB in the beginning and 24.6 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 76.98 ms. Allocated memory is still 48.2 MB. Free memory was 24.6 MB in the beginning and 22.9 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 600.74 ms. Allocated memory was 48.2 MB in the beginning and 60.8 MB in the end (delta: 12.6 MB). Free memory was 22.9 MB in the beginning and 36.9 MB in the end (delta: -14.1 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * TraceAbstraction took 4852.29 ms. Allocated memory was 60.8 MB in the beginning and 73.4 MB in the end (delta: 12.6 MB). Free memory was 36.4 MB in the beginning and 45.3 MB in the end (delta: -8.9 MB). Peak memory consumption was 3.6 MB. Max. memory is 16.1 GB. * Witness Printer took 60.34 ms. Allocated memory is still 73.4 MB. Free memory was 45.3 MB in the beginning and 42.9 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 3]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L81] double x = 0.0; [L82] double y = -0.0; [L26] __uint32_t msw, lsw; [L29] ieee_double_shape_type ew_u; [L30] ew_u.value = (x) [L31] EXPR ew_u.parts.msw [L31] (msw) = ew_u.parts.msw [L32] EXPR ew_u.parts.lsw [L32] (lsw) = ew_u.parts.lsw [L35-L36] COND TRUE (msw == 0x00000000 && lsw == 0x00000000) || (msw == 0x80000000 && lsw == 0x00000000) [L37] return 2; [L54] COND FALSE !(__fpclassify_double(x) == 0) [L26] __uint32_t msw, lsw; [L29] ieee_double_shape_type ew_u; [L30] ew_u.value = (x) [L31] EXPR ew_u.parts.msw [L31] (msw) = ew_u.parts.msw [L32] EXPR ew_u.parts.lsw [L32] (lsw) = ew_u.parts.lsw [L35-L36] COND TRUE (msw == 0x00000000 && lsw == 0x00000000) || (msw == 0x80000000 && lsw == 0x00000000) [L37] return 2; [L56] COND FALSE !(__fpclassify_double(y) == 0) [L59] EXPR x > y ? x : y [L59] return x > y ? x : y; [L83] double res = fmax_double(x, y); [L86] EXPR res == 0.0 && __signbit_double(res) == 0 [L63] __uint32_t msw; [L66] ieee_double_shape_type gh_u; [L67] gh_u.value = (x) [L68] EXPR gh_u.parts.msw [L68] (msw) = gh_u.parts.msw [L71] return (msw & 0x80000000) != 0; [L86] EXPR res == 0.0 && __signbit_double(res) == 0 [L86] COND TRUE !(res == 0.0 && __signbit_double(res) == 0) [L3] __assert_fail("0", "double_req_bl_1252b.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 33 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 4.7s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 234 SDtfs, 257 SDslu, 359 SDs, 0 SdLazy, 130 SolverSat, 20 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 209 GetRequests, 168 SyntacticMatches, 3 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=33occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 7 MinimizatonAttempts, 61 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 128 NumberOfCodeBlocks, 128 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 198 ConstructedInterpolants, 15 QuantifiedInterpolants, 12524 SizeOfPredicates, 27 NumberOfNonLiveVariables, 463 ConjunctsInSsa, 40 ConjunctsInUnsatCore, 14 InterpolantComputations, 14 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! Received shutdown request...