./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/float-newlib/double_req_bl_1250.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9a8b2e8d 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_1.3.100.v20150511-1540.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_1250.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 216b013ad4da4eb5e85a87de58b407e30252b4c5 .................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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_1.3.100.v20150511-1540.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_1250.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 216b013ad4da4eb5e85a87de58b407e30252b4c5 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.25-9a8b2e8 [2020-10-20 00:33:23,245 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 00:33:23,248 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 00:33:23,287 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 00:33:23,287 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 00:33:23,297 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 00:33:23,299 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 00:33:23,302 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 00:33:23,304 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 00:33:23,308 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 00:33:23,310 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 00:33:23,311 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 00:33:23,311 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 00:33:23,315 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 00:33:23,316 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 00:33:23,318 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 00:33:23,319 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 00:33:23,320 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 00:33:23,322 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 00:33:23,329 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 00:33:23,331 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 00:33:23,333 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 00:33:23,335 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 00:33:23,335 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 00:33:23,347 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 00:33:23,347 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 00:33:23,347 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 00:33:23,348 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 00:33:23,348 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 00:33:23,349 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 00:33:23,349 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 00:33:23,350 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 00:33:23,351 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 00:33:23,351 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 00:33:23,352 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 00:33:23,352 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 00:33:23,359 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 00:33:23,359 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 00:33:23,360 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 00:33:23,364 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 00:33:23,364 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 00:33:23,367 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-20 00:33:23,400 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 00:33:23,400 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 00:33:23,402 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 00:33:23,402 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 00:33:23,403 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 00:33:23,403 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 00:33:23,403 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-20 00:33:23,403 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-20 00:33:23,404 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-20 00:33:23,404 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 00:33:23,405 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-20 00:33:23,405 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-20 00:33:23,405 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-20 00:33:23,406 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-20 00:33:23,406 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-20 00:33:23,407 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 00:33:23,407 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-20 00:33:23,407 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 00:33:23,407 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 00:33:23,408 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-20 00:33:23,408 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-20 00:33:23,409 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 00:33:23,409 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 00:33:23,409 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-20 00:33:23,409 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-20 00:33:23,410 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-20 00:33:23,410 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-20 00:33:23,410 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-20 00:33:23,410 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 00:33:23,410 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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 -> 216b013ad4da4eb5e85a87de58b407e30252b4c5 [2020-10-20 00:33:23,613 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 00:33:23,625 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 00:33:23,629 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 00:33:23,631 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 00:33:23,631 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 00:33:23,632 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/double_req_bl_1250.c [2020-10-20 00:33:23,713 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d0ec50e95/e71f98e104964079b502a072c40173b4/FLAG4be526322 [2020-10-20 00:33:24,265 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 00:33:24,266 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_1250.c [2020-10-20 00:33:24,274 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d0ec50e95/e71f98e104964079b502a072c40173b4/FLAG4be526322 [2020-10-20 00:33:24,533 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d0ec50e95/e71f98e104964079b502a072c40173b4 [2020-10-20 00:33:24,536 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 00:33:24,543 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-20 00:33:24,544 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 00:33:24,544 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 00:33:24,549 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 00:33:24,550 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 12:33:24" (1/1) ... [2020-10-20 00:33:24,553 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@73784a81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:33:24, skipping insertion in model container [2020-10-20 00:33:24,553 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 12:33:24" (1/1) ... [2020-10-20 00:33:24,561 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 00:33:24,582 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 00:33:24,830 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 00:33:24,842 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 00:33:24,888 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 00:33:24,906 INFO L208 MainTranslator]: Completed translation [2020-10-20 00:33:24,907 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:33:24 WrapperNode [2020-10-20 00:33:24,907 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 00:33:24,908 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-20 00:33:24,908 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-20 00:33:24,908 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-20 00:33:24,918 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:33:24" (1/1) ... [2020-10-20 00:33:24,928 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:33:24" (1/1) ... [2020-10-20 00:33:24,955 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-20 00:33:24,956 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 00:33:24,956 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 00:33:24,957 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 00:33:24,967 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:33:24" (1/1) ... [2020-10-20 00:33:24,968 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:33:24" (1/1) ... [2020-10-20 00:33:24,971 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:33:24" (1/1) ... [2020-10-20 00:33:24,971 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:33:24" (1/1) ... [2020-10-20 00:33:24,979 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:33:24" (1/1) ... [2020-10-20 00:33:24,988 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:33:24" (1/1) ... [2020-10-20 00:33:24,994 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:33:24" (1/1) ... [2020-10-20 00:33:25,001 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 00:33:25,002 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 00:33:25,002 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 00:33:25,002 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 00:33:25,003 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:33:24" (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 [2020-10-20 00:33:25,075 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-20 00:33:25,076 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-20 00:33:25,076 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-20 00:33:25,076 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 00:33:25,077 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 00:33:25,077 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-20 00:33:25,077 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-20 00:33:25,392 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 00:33:25,393 INFO L298 CfgBuilder]: Removed 18 assume(true) statements. [2020-10-20 00:33:25,395 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:33:25 BoogieIcfgContainer [2020-10-20 00:33:25,395 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 00:33:25,396 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-20 00:33:25,396 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-20 00:33:25,401 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-20 00:33:25,402 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 12:33:24" (1/3) ... [2020-10-20 00:33:25,402 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1bcbcd0f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 12:33:25, skipping insertion in model container [2020-10-20 00:33:25,403 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:33:24" (2/3) ... [2020-10-20 00:33:25,404 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1bcbcd0f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 12:33:25, skipping insertion in model container [2020-10-20 00:33:25,404 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:33:25" (3/3) ... [2020-10-20 00:33:25,407 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1250.c [2020-10-20 00:33:25,428 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-20 00:33:25,447 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-20 00:33:25,481 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-20 00:33:25,511 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-20 00:33:25,512 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-20 00:33:25,512 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-20 00:33:25,512 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 00:33:25,513 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 00:33:25,513 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-20 00:33:25,513 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 00:33:25,513 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-20 00:33:25,528 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states. [2020-10-20 00:33:25,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-20 00:33:25,540 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:33:25,541 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 00:33:25,542 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:33:25,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:33:25,547 INFO L82 PathProgramCache]: Analyzing trace with hash -958093107, now seen corresponding path program 1 times [2020-10-20 00:33:25,554 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 00:33:25,555 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1548370197] [2020-10-20 00:33:25,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 00:33:25,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 00:33:25,685 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 00:33:25,686 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1548370197] [2020-10-20 00:33:25,686 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 00:33:25,687 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-20 00:33:25,687 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99995225] [2020-10-20 00:33:25,691 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-20 00:33:25,692 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 00:33:25,703 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-20 00:33:25,704 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-20 00:33:25,707 INFO L87 Difference]: Start difference. First operand 29 states. Second operand 2 states. [2020-10-20 00:33:25,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 00:33:25,725 INFO L93 Difference]: Finished difference Result 55 states and 85 transitions. [2020-10-20 00:33:25,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-20 00:33:25,727 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-10-20 00:33:25,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 00:33:25,738 INFO L225 Difference]: With dead ends: 55 [2020-10-20 00:33:25,738 INFO L226 Difference]: Without dead ends: 25 [2020-10-20 00:33:25,742 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 [2020-10-20 00:33:25,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2020-10-20 00:33:25,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2020-10-20 00:33:25,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-10-20 00:33:25,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 35 transitions. [2020-10-20 00:33:25,779 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 35 transitions. Word has length 10 [2020-10-20 00:33:25,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 00:33:25,779 INFO L481 AbstractCegarLoop]: Abstraction has 25 states and 35 transitions. [2020-10-20 00:33:25,779 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-20 00:33:25,779 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 35 transitions. [2020-10-20 00:33:25,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-20 00:33:25,780 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:33:25,780 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 00:33:25,781 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-20 00:33:25,781 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:33:25,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:33:25,781 INFO L82 PathProgramCache]: Analyzing trace with hash 1001566992, now seen corresponding path program 1 times [2020-10-20 00:33:25,782 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 00:33:25,782 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879753193] [2020-10-20 00:33:25,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 00:33:25,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 00:33:25,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 00:33:25,898 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [879753193] [2020-10-20 00:33:25,898 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 00:33:25,898 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-20 00:33:25,899 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37455601] [2020-10-20 00:33:25,900 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-20 00:33:25,900 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 00:33:25,901 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 00:33:25,901 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 00:33:25,901 INFO L87 Difference]: Start difference. First operand 25 states and 35 transitions. Second operand 4 states. [2020-10-20 00:33:25,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 00:33:25,996 INFO L93 Difference]: Finished difference Result 41 states and 52 transitions. [2020-10-20 00:33:25,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-20 00:33:25,997 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-10-20 00:33:25,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 00:33:25,998 INFO L225 Difference]: With dead ends: 41 [2020-10-20 00:33:25,999 INFO L226 Difference]: Without dead ends: 36 [2020-10-20 00:33:26,000 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 [2020-10-20 00:33:26,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-10-20 00:33:26,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 27. [2020-10-20 00:33:26,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-10-20 00:33:26,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 37 transitions. [2020-10-20 00:33:26,008 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 37 transitions. Word has length 11 [2020-10-20 00:33:26,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 00:33:26,009 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 37 transitions. [2020-10-20 00:33:26,009 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-20 00:33:26,009 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 37 transitions. [2020-10-20 00:33:26,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-20 00:33:26,010 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:33:26,010 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 00:33:26,011 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-20 00:33:26,011 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:33:26,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:33:26,012 INFO L82 PathProgramCache]: Analyzing trace with hash 502183504, now seen corresponding path program 1 times [2020-10-20 00:33:26,012 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 00:33:26,013 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [233506444] [2020-10-20 00:33:26,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 00:33:26,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 00:33:26,099 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 00:33:26,099 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [233506444] [2020-10-20 00:33:26,099 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 00:33:26,100 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-20 00:33:26,100 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429219677] [2020-10-20 00:33:26,100 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-20 00:33:26,101 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 00:33:26,101 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 00:33:26,101 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 00:33:26,101 INFO L87 Difference]: Start difference. First operand 27 states and 37 transitions. Second operand 4 states. [2020-10-20 00:33:26,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 00:33:26,164 INFO L93 Difference]: Finished difference Result 43 states and 54 transitions. [2020-10-20 00:33:26,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-20 00:33:26,165 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-10-20 00:33:26,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 00:33:26,166 INFO L225 Difference]: With dead ends: 43 [2020-10-20 00:33:26,167 INFO L226 Difference]: Without dead ends: 38 [2020-10-20 00:33:26,167 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 [2020-10-20 00:33:26,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-10-20 00:33:26,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 27. [2020-10-20 00:33:26,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-10-20 00:33:26,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 37 transitions. [2020-10-20 00:33:26,173 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 37 transitions. Word has length 12 [2020-10-20 00:33:26,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 00:33:26,173 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 37 transitions. [2020-10-20 00:33:26,173 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-20 00:33:26,174 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 37 transitions. [2020-10-20 00:33:26,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-20 00:33:26,174 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:33:26,174 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 00:33:26,175 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-20 00:33:26,175 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:33:26,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:33:26,175 INFO L82 PathProgramCache]: Analyzing trace with hash -1951251627, now seen corresponding path program 1 times [2020-10-20 00:33:26,176 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 00:33:26,176 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1042451900] [2020-10-20 00:33:26,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 00:33:26,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 00:33:26,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 00:33:26,243 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1042451900] [2020-10-20 00:33:26,243 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 00:33:26,244 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-20 00:33:26,244 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051054175] [2020-10-20 00:33:26,244 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-20 00:33:26,244 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 00:33:26,245 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 00:33:26,245 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 00:33:26,245 INFO L87 Difference]: Start difference. First operand 27 states and 37 transitions. Second operand 4 states. [2020-10-20 00:33:26,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 00:33:26,296 INFO L93 Difference]: Finished difference Result 45 states and 56 transitions. [2020-10-20 00:33:26,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-20 00:33:26,297 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-10-20 00:33:26,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 00:33:26,298 INFO L225 Difference]: With dead ends: 45 [2020-10-20 00:33:26,298 INFO L226 Difference]: Without dead ends: 40 [2020-10-20 00:33:26,299 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 [2020-10-20 00:33:26,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-10-20 00:33:26,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 27. [2020-10-20 00:33:26,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-10-20 00:33:26,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 37 transitions. [2020-10-20 00:33:26,304 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 37 transitions. Word has length 13 [2020-10-20 00:33:26,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 00:33:26,304 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 37 transitions. [2020-10-20 00:33:26,304 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-20 00:33:26,304 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 37 transitions. [2020-10-20 00:33:26,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-20 00:33:26,305 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:33:26,305 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 00:33:26,306 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-20 00:33:26,306 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:33:26,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:33:26,306 INFO L82 PathProgramCache]: Analyzing trace with hash -555778251, now seen corresponding path program 1 times [2020-10-20 00:33:26,306 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 00:33:26,307 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2033555253] [2020-10-20 00:33:26,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 00:33:26,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 00:33:26,368 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 00:33:26,369 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2033555253] [2020-10-20 00:33:26,370 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 00:33:26,371 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-20 00:33:26,371 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869568656] [2020-10-20 00:33:26,371 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-20 00:33:26,372 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 00:33:26,372 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 00:33:26,374 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 00:33:26,374 INFO L87 Difference]: Start difference. First operand 27 states and 37 transitions. Second operand 4 states. [2020-10-20 00:33:26,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 00:33:26,458 INFO L93 Difference]: Finished difference Result 43 states and 54 transitions. [2020-10-20 00:33:26,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-20 00:33:26,459 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-10-20 00:33:26,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 00:33:26,460 INFO L225 Difference]: With dead ends: 43 [2020-10-20 00:33:26,460 INFO L226 Difference]: Without dead ends: 38 [2020-10-20 00:33:26,460 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 [2020-10-20 00:33:26,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-10-20 00:33:26,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 27. [2020-10-20 00:33:26,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-10-20 00:33:26,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 37 transitions. [2020-10-20 00:33:26,469 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 37 transitions. Word has length 14 [2020-10-20 00:33:26,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 00:33:26,474 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 37 transitions. [2020-10-20 00:33:26,474 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-20 00:33:26,474 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 37 transitions. [2020-10-20 00:33:26,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-20 00:33:26,475 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:33:26,475 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 00:33:26,475 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-20 00:33:26,475 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:33:26,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:33:26,476 INFO L82 PathProgramCache]: Analyzing trace with hash 1219229111, now seen corresponding path program 1 times [2020-10-20 00:33:26,476 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 00:33:26,476 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1534210455] [2020-10-20 00:33:26,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 00:33:26,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 00:33:26,543 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 00:33:26,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 00:33:26,592 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 00:33:26,643 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 00:33:26,644 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-20 00:33:26,649 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-20 00:33:26,704 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 12:33:26 BoogieIcfgContainer [2020-10-20 00:33:26,705 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-20 00:33:26,706 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 00:33:26,706 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 00:33:26,706 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 00:33:26,707 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:33:25" (3/4) ... [2020-10-20 00:33:26,713 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-20 00:33:26,713 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 00:33:26,717 INFO L168 Benchmark]: Toolchain (without parser) took 2177.46 ms. Allocated memory was 41.9 MB in the beginning and 47.2 MB in the end (delta: 5.2 MB). Free memory was 21.9 MB in the beginning and 17.0 MB in the end (delta: 4.9 MB). Peak memory consumption was 10.2 MB. Max. memory is 14.3 GB. [2020-10-20 00:33:26,718 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 32.0 MB. Free memory was 9.5 MB in the beginning and 9.4 MB in the end (delta: 47.7 kB). Peak memory consumption was 47.7 kB. Max. memory is 14.3 GB. [2020-10-20 00:33:26,720 INFO L168 Benchmark]: CACSL2BoogieTranslator took 363.62 ms. Allocated memory was 41.9 MB in the beginning and 42.5 MB in the end (delta: 524.3 kB). Free memory was 21.1 MB in the beginning and 21.8 MB in the end (delta: -676.3 kB). Peak memory consumption was 12.1 MB. Max. memory is 14.3 GB. [2020-10-20 00:33:26,727 INFO L168 Benchmark]: Boogie Procedure Inliner took 47.96 ms. Allocated memory is still 42.5 MB. Free memory was 21.8 MB in the beginning and 19.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 14.3 GB. [2020-10-20 00:33:26,728 INFO L168 Benchmark]: Boogie Preprocessor took 45.51 ms. Allocated memory is still 42.5 MB. Free memory was 19.7 MB in the beginning and 17.9 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.8 MB. Max. memory is 14.3 GB. [2020-10-20 00:33:26,729 INFO L168 Benchmark]: RCFGBuilder took 393.27 ms. Allocated memory was 42.5 MB in the beginning and 44.0 MB in the end (delta: 1.6 MB). Free memory was 17.9 MB in the beginning and 14.9 MB in the end (delta: 3.0 MB). Peak memory consumption was 8.5 MB. Max. memory is 14.3 GB. [2020-10-20 00:33:26,730 INFO L168 Benchmark]: TraceAbstraction took 1309.01 ms. Allocated memory was 44.0 MB in the beginning and 47.2 MB in the end (delta: 3.1 MB). Free memory was 14.3 MB in the beginning and 17.4 MB in the end (delta: -3.1 MB). Peak memory consumption was 35.3 kB. Max. memory is 14.3 GB. [2020-10-20 00:33:26,733 INFO L168 Benchmark]: Witness Printer took 7.95 ms. Allocated memory is still 47.2 MB. Free memory was 17.4 MB in the beginning and 17.0 MB in the end (delta: 382.8 kB). Peak memory consumption was 382.8 kB. Max. memory is 14.3 GB. [2020-10-20 00:33:26,749 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 32.0 MB. Free memory was 9.5 MB in the beginning and 9.4 MB in the end (delta: 47.7 kB). Peak memory consumption was 47.7 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 363.62 ms. Allocated memory was 41.9 MB in the beginning and 42.5 MB in the end (delta: 524.3 kB). Free memory was 21.1 MB in the beginning and 21.8 MB in the end (delta: -676.3 kB). Peak memory consumption was 12.1 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 47.96 ms. Allocated memory is still 42.5 MB. Free memory was 21.8 MB in the beginning and 19.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 45.51 ms. Allocated memory is still 42.5 MB. Free memory was 19.7 MB in the beginning and 17.9 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.8 MB. Max. memory is 14.3 GB. * RCFGBuilder took 393.27 ms. Allocated memory was 42.5 MB in the beginning and 44.0 MB in the end (delta: 1.6 MB). Free memory was 17.9 MB in the beginning and 14.9 MB in the end (delta: 3.0 MB). Peak memory consumption was 8.5 MB. Max. memory is 14.3 GB. * TraceAbstraction took 1309.01 ms. Allocated memory was 44.0 MB in the beginning and 47.2 MB in the end (delta: 3.1 MB). Free memory was 14.3 MB in the beginning and 17.4 MB in the end (delta: -3.1 MB). Peak memory consumption was 35.3 kB. Max. memory is 14.3 GB. * Witness Printer took 7.95 ms. Allocated memory is still 47.2 MB. Free memory was 17.4 MB in the beginning and 17.0 MB in the end (delta: 382.8 kB). Peak memory consumption was 382.8 kB. Max. memory is 14.3 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 18, overapproximation of someBinaryArithmeticDOUBLEoperation at line 69. Possible FailurePath: [L69] double x = 0.0 / 0.0; [L70] double y = 0.0 / 0.0; [L29] __uint32_t msw, lsw; [L32] ieee_double_shape_type ew_u; [L33] ew_u.value = (x) [L34] EXPR ew_u.parts.msw [L34] (msw) = ew_u.parts.msw [L35] EXPR ew_u.parts.lsw [L35] (lsw) = ew_u.parts.lsw [L38-L39] COND FALSE !((msw == 0x00000000 && lsw == 0x00000000) || (msw == 0x80000000 && lsw == 0x00000000)) [L41-L42] COND FALSE !((msw >= 0x00100000 && msw <= 0x7fefffff) || (msw >= 0x80100000 && msw <= 0xffefffff)) [L44-L45] COND FALSE !(( msw <= 0x000fffff) || (msw >= 0x80000000 && msw <= 0x800fffff)) [L48-L49] COND FALSE !((msw == 0x7ff00000 && lsw == 0x00000000) || (msw == 0xfff00000 && lsw == 0x00000000)) [L52] return 0; [L57] COND TRUE __fpclassify_double(x) == 0 [L58] return y; [L71] double res = fmax_double(x, y); [L18] return x != x; [L73] COND TRUE !isnan_double(res) [L3] __assert_fail("0", "double_req_bl_1250.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 29 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.1s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 206 SDtfs, 44 SDslu, 238 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, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=29occurred 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, 44 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 0.1.25-9a8b2e8 [2020-10-20 00:33:28,913 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 00:33:28,915 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 00:33:28,943 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 00:33:28,943 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 00:33:28,945 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 00:33:28,946 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 00:33:28,948 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 00:33:28,949 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 00:33:28,950 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 00:33:28,951 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 00:33:28,952 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 00:33:28,953 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 00:33:28,953 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 00:33:28,955 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 00:33:28,956 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 00:33:28,957 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 00:33:28,957 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 00:33:28,959 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 00:33:28,961 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 00:33:28,963 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 00:33:28,964 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 00:33:28,965 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 00:33:28,966 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 00:33:28,969 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 00:33:28,973 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 00:33:28,974 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 00:33:28,975 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 00:33:28,975 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 00:33:28,976 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 00:33:28,977 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 00:33:28,980 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 00:33:28,981 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 00:33:28,982 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 00:33:28,986 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 00:33:28,986 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 00:33:28,987 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 00:33:28,987 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 00:33:28,987 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 00:33:28,988 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 00:33:28,989 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 00:33:28,989 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-10-20 00:33:29,016 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 00:33:29,016 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 00:33:29,017 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 00:33:29,017 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 00:33:29,018 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 00:33:29,018 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 00:33:29,018 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-20 00:33:29,018 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-20 00:33:29,018 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 00:33:29,019 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-20 00:33:29,019 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-20 00:33:29,019 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-20 00:33:29,019 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-10-20 00:33:29,019 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-10-20 00:33:29,019 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-20 00:33:29,020 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-20 00:33:29,020 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 00:33:29,020 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-20 00:33:29,020 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 00:33:29,020 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 00:33:29,021 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-20 00:33:29,021 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-20 00:33:29,021 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 00:33:29,021 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 00:33:29,021 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-20 00:33:29,022 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-20 00:33:29,022 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-10-20 00:33:29,022 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-10-20 00:33:29,022 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-20 00:33:29,022 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 00:33:29,023 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-20 00:33:29,023 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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 -> 216b013ad4da4eb5e85a87de58b407e30252b4c5 [2020-10-20 00:33:29,229 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 00:33:29,241 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 00:33:29,244 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 00:33:29,246 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 00:33:29,247 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 00:33:29,247 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/double_req_bl_1250.c [2020-10-20 00:33:29,311 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9c79f836b/36afc0671180441d81a88fd1eb5c81a1/FLAG8792a2dcb [2020-10-20 00:33:29,826 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 00:33:29,827 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_1250.c [2020-10-20 00:33:29,834 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9c79f836b/36afc0671180441d81a88fd1eb5c81a1/FLAG8792a2dcb [2020-10-20 00:33:30,226 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9c79f836b/36afc0671180441d81a88fd1eb5c81a1 [2020-10-20 00:33:30,230 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 00:33:30,236 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-20 00:33:30,237 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 00:33:30,238 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 00:33:30,241 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 00:33:30,242 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 12:33:30" (1/1) ... [2020-10-20 00:33:30,245 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b854f0f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:33:30, skipping insertion in model container [2020-10-20 00:33:30,245 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 12:33:30" (1/1) ... [2020-10-20 00:33:30,253 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 00:33:30,276 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 00:33:30,555 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 00:33:30,574 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 00:33:30,629 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 00:33:30,660 INFO L208 MainTranslator]: Completed translation [2020-10-20 00:33:30,660 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:33:30 WrapperNode [2020-10-20 00:33:30,661 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 00:33:30,661 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-20 00:33:30,662 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-20 00:33:30,663 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-20 00:33:30,672 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:33:30" (1/1) ... [2020-10-20 00:33:30,699 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:33:30" (1/1) ... [2020-10-20 00:33:30,724 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-20 00:33:30,724 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 00:33:30,724 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 00:33:30,724 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 00:33:30,734 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:33:30" (1/1) ... [2020-10-20 00:33:30,734 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:33:30" (1/1) ... [2020-10-20 00:33:30,739 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:33:30" (1/1) ... [2020-10-20 00:33:30,739 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:33:30" (1/1) ... [2020-10-20 00:33:30,750 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:33:30" (1/1) ... [2020-10-20 00:33:30,755 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:33:30" (1/1) ... [2020-10-20 00:33:30,761 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:33:30" (1/1) ... [2020-10-20 00:33:30,769 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 00:33:30,770 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 00:33:30,774 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 00:33:30,775 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 00:33:30,776 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:33:30" (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 [2020-10-20 00:33:30,847 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2020-10-20 00:33:30,847 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-10-20 00:33:30,847 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-20 00:33:30,848 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-10-20 00:33:30,848 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 00:33:30,848 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 00:33:30,848 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-20 00:33:31,305 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 00:33:31,306 INFO L298 CfgBuilder]: Removed 18 assume(true) statements. [2020-10-20 00:33:31,308 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:33:31 BoogieIcfgContainer [2020-10-20 00:33:31,308 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 00:33:31,312 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-20 00:33:31,313 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-20 00:33:31,321 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-20 00:33:31,321 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 12:33:30" (1/3) ... [2020-10-20 00:33:31,322 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f7e5316 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 12:33:31, skipping insertion in model container [2020-10-20 00:33:31,325 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:33:30" (2/3) ... [2020-10-20 00:33:31,326 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f7e5316 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 12:33:31, skipping insertion in model container [2020-10-20 00:33:31,326 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:33:31" (3/3) ... [2020-10-20 00:33:31,328 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1250.c [2020-10-20 00:33:31,340 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-20 00:33:31,349 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-20 00:33:31,364 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-20 00:33:31,387 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-20 00:33:31,387 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-20 00:33:31,388 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-20 00:33:31,388 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 00:33:31,388 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 00:33:31,388 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-20 00:33:31,389 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 00:33:31,389 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-20 00:33:31,410 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states. [2020-10-20 00:33:31,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-20 00:33:31,416 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:33:31,417 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 00:33:31,417 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:33:31,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:33:31,422 INFO L82 PathProgramCache]: Analyzing trace with hash -958093107, now seen corresponding path program 1 times [2020-10-20 00:33:31,434 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 00:33:31,434 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1307391498] [2020-10-20 00:33:31,435 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 [2020-10-20 00:33:31,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 00:33:31,555 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 1 conjunts are in the unsatisfiable core [2020-10-20 00:33:31,561 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 00:33:31,577 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 00:33:31,577 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-20 00:33:31,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 00:33:31,583 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1307391498] [2020-10-20 00:33:31,584 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-20 00:33:31,585 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-10-20 00:33:31,586 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398640177] [2020-10-20 00:33:31,591 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-20 00:33:31,592 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-20 00:33:31,607 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-20 00:33:31,608 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-20 00:33:31,610 INFO L87 Difference]: Start difference. First operand 29 states. Second operand 2 states. [2020-10-20 00:33:31,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 00:33:31,633 INFO L93 Difference]: Finished difference Result 55 states and 85 transitions. [2020-10-20 00:33:31,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-20 00:33:31,635 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-10-20 00:33:31,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 00:33:31,647 INFO L225 Difference]: With dead ends: 55 [2020-10-20 00:33:31,647 INFO L226 Difference]: Without dead ends: 25 [2020-10-20 00:33:31,651 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 [2020-10-20 00:33:31,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2020-10-20 00:33:31,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2020-10-20 00:33:31,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-10-20 00:33:31,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 35 transitions. [2020-10-20 00:33:31,689 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 35 transitions. Word has length 10 [2020-10-20 00:33:31,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 00:33:31,690 INFO L481 AbstractCegarLoop]: Abstraction has 25 states and 35 transitions. [2020-10-20 00:33:31,690 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-20 00:33:31,690 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 35 transitions. [2020-10-20 00:33:31,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-20 00:33:31,691 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:33:31,691 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 00:33:31,899 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-10-20 00:33:31,903 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:33:31,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:33:31,912 INFO L82 PathProgramCache]: Analyzing trace with hash 1001566992, now seen corresponding path program 1 times [2020-10-20 00:33:31,914 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 00:33:31,914 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1205990314] [2020-10-20 00:33:31,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 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 [2020-10-20 00:33:32,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 00:33:32,033 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 3 conjunts are in the unsatisfiable core [2020-10-20 00:33:32,035 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 00:33:32,069 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 00:33:32,069 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-20 00:33:32,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 00:33:32,090 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1205990314] [2020-10-20 00:33:32,090 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-20 00:33:32,091 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2020-10-20 00:33:32,091 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523784339] [2020-10-20 00:33:32,093 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-20 00:33:32,093 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-20 00:33:32,094 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-20 00:33:32,094 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-20 00:33:32,095 INFO L87 Difference]: Start difference. First operand 25 states and 35 transitions. Second operand 6 states. [2020-10-20 00:33:32,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 00:33:32,237 INFO L93 Difference]: Finished difference Result 52 states and 65 transitions. [2020-10-20 00:33:32,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-20 00:33:32,240 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2020-10-20 00:33:32,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 00:33:32,243 INFO L225 Difference]: With dead ends: 52 [2020-10-20 00:33:32,243 INFO L226 Difference]: Without dead ends: 47 [2020-10-20 00:33:32,246 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 [2020-10-20 00:33:32,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-10-20 00:33:32,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 27. [2020-10-20 00:33:32,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-10-20 00:33:32,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 37 transitions. [2020-10-20 00:33:32,260 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 37 transitions. Word has length 11 [2020-10-20 00:33:32,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 00:33:32,261 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 37 transitions. [2020-10-20 00:33:32,261 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-20 00:33:32,261 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 37 transitions. [2020-10-20 00:33:32,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-20 00:33:32,264 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:33:32,265 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 00:33:32,481 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-10-20 00:33:32,482 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:33:32,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:33:32,482 INFO L82 PathProgramCache]: Analyzing trace with hash 1219229111, now seen corresponding path program 1 times [2020-10-20 00:33:32,483 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 00:33:32,483 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1468690503] [2020-10-20 00:33:32,484 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 [2020-10-20 00:33:32,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 00:33:32,571 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-20 00:33:32,573 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 00:33:32,689 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 00:33:32,690 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-20 00:33:32,809 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 00:33:32,810 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1468690503] [2020-10-20 00:33:32,810 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-20 00:33:32,810 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2020-10-20 00:33:32,810 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777308283] [2020-10-20 00:33:32,811 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-20 00:33:32,811 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-20 00:33:32,811 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-20 00:33:32,812 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-20 00:33:32,812 INFO L87 Difference]: Start difference. First operand 27 states and 37 transitions. Second operand 10 states. [2020-10-20 00:33:33,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 00:33:33,256 INFO L93 Difference]: Finished difference Result 36 states and 45 transitions. [2020-10-20 00:33:33,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-20 00:33:33,256 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 14 [2020-10-20 00:33:33,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 00:33:33,257 INFO L225 Difference]: With dead ends: 36 [2020-10-20 00:33:33,257 INFO L226 Difference]: Without dead ends: 27 [2020-10-20 00:33:33,258 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2020-10-20 00:33:33,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-10-20 00:33:33,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 25. [2020-10-20 00:33:33,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-10-20 00:33:33,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 33 transitions. [2020-10-20 00:33:33,263 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 33 transitions. Word has length 14 [2020-10-20 00:33:33,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 00:33:33,264 INFO L481 AbstractCegarLoop]: Abstraction has 25 states and 33 transitions. [2020-10-20 00:33:33,264 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-20 00:33:33,264 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 33 transitions. [2020-10-20 00:33:33,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-20 00:33:33,265 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:33:33,265 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 00:33:33,466 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-10-20 00:33:33,466 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:33:33,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:33:33,467 INFO L82 PathProgramCache]: Analyzing trace with hash 1012428811, now seen corresponding path program 1 times [2020-10-20 00:33:33,468 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 00:33:33,469 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [469564858] [2020-10-20 00:33:33,469 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 [2020-10-20 00:33:33,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 00:33:33,621 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 3 conjunts are in the unsatisfiable core [2020-10-20 00:33:33,623 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 00:33:33,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 00:33:33,635 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-20 00:33:33,659 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 00:33:33,659 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [469564858] [2020-10-20 00:33:33,659 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-20 00:33:33,660 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2020-10-20 00:33:33,660 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816883617] [2020-10-20 00:33:33,660 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-20 00:33:33,661 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-20 00:33:33,661 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-20 00:33:33,661 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-20 00:33:33,662 INFO L87 Difference]: Start difference. First operand 25 states and 33 transitions. Second operand 6 states. [2020-10-20 00:33:33,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 00:33:33,781 INFO L93 Difference]: Finished difference Result 52 states and 59 transitions. [2020-10-20 00:33:33,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-20 00:33:33,782 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2020-10-20 00:33:33,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 00:33:33,783 INFO L225 Difference]: With dead ends: 52 [2020-10-20 00:33:33,783 INFO L226 Difference]: Without dead ends: 47 [2020-10-20 00:33:33,784 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 [2020-10-20 00:33:33,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-10-20 00:33:33,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 27. [2020-10-20 00:33:33,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-10-20 00:33:33,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 35 transitions. [2020-10-20 00:33:33,790 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 35 transitions. Word has length 16 [2020-10-20 00:33:33,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 00:33:33,790 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 35 transitions. [2020-10-20 00:33:33,791 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-20 00:33:33,791 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 35 transitions. [2020-10-20 00:33:33,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-20 00:33:33,791 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:33:33,792 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 00:33:34,004 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-10-20 00:33:34,005 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:33:34,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:33:34,005 INFO L82 PathProgramCache]: Analyzing trace with hash -356841937, now seen corresponding path program 1 times [2020-10-20 00:33:34,005 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 00:33:34,006 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [385888085] [2020-10-20 00:33:34,006 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 [2020-10-20 00:33:34,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 00:33:34,186 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-20 00:33:34,190 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 00:33:34,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 00:33:34,338 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-20 00:33:34,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 00:33:34,495 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [385888085] [2020-10-20 00:33:34,495 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-20 00:33:34,496 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 12 [2020-10-20 00:33:34,496 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175177504] [2020-10-20 00:33:34,496 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-20 00:33:34,496 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-20 00:33:34,497 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-20 00:33:34,497 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2020-10-20 00:33:34,497 INFO L87 Difference]: Start difference. First operand 27 states and 35 transitions. Second operand 12 states. [2020-10-20 00:33:35,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 00:33:35,060 INFO L93 Difference]: Finished difference Result 32 states and 39 transitions. [2020-10-20 00:33:35,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-20 00:33:35,060 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 18 [2020-10-20 00:33:35,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 00:33:35,062 INFO L225 Difference]: With dead ends: 32 [2020-10-20 00:33:35,062 INFO L226 Difference]: Without dead ends: 23 [2020-10-20 00:33:35,063 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 3 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2020-10-20 00:33:35,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-10-20 00:33:35,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2020-10-20 00:33:35,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-10-20 00:33:35,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2020-10-20 00:33:35,067 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 18 [2020-10-20 00:33:35,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 00:33:35,067 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2020-10-20 00:33:35,068 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-20 00:33:35,068 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2020-10-20 00:33:35,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-20 00:33:35,068 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:33:35,069 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 00:33:35,269 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2020-10-20 00:33:35,270 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:33:35,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:33:35,271 INFO L82 PathProgramCache]: Analyzing trace with hash -208376157, now seen corresponding path program 1 times [2020-10-20 00:33:35,271 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 00:33:35,272 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [891438334] [2020-10-20 00:33:35,272 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 [2020-10-20 00:33:35,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 00:33:35,368 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-20 00:33:35,370 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 00:33:35,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 00:33:35,474 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-20 00:33:35,556 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 00:33:35,556 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [891438334] [2020-10-20 00:33:35,557 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-20 00:33:35,557 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2020-10-20 00:33:35,557 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109388327] [2020-10-20 00:33:35,557 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-20 00:33:35,557 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-20 00:33:35,558 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-20 00:33:35,558 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-20 00:33:35,558 INFO L87 Difference]: Start difference. First operand 23 states and 26 transitions. Second operand 10 states. [2020-10-20 00:33:35,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 00:33:35,778 INFO L93 Difference]: Finished difference Result 23 states and 26 transitions. [2020-10-20 00:33:35,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-20 00:33:35,778 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 19 [2020-10-20 00:33:35,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 00:33:35,779 INFO L225 Difference]: With dead ends: 23 [2020-10-20 00:33:35,779 INFO L226 Difference]: Without dead ends: 0 [2020-10-20 00:33:35,780 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2020-10-20 00:33:35,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-20 00:33:35,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-20 00:33:35,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-20 00:33:35,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-20 00:33:35,781 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 19 [2020-10-20 00:33:35,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 00:33:35,781 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-20 00:33:35,781 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-20 00:33:35,781 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-20 00:33:35,782 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-20 00:33:35,982 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 mathsat -unsat_core_generation=3 [2020-10-20 00:33:35,986 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-20 00:33:36,293 INFO L274 CegarLoopResult]: For program point L31-1(lines 31 36) no Hoare annotation was computed. [2020-10-20 00:33:36,293 INFO L270 CegarLoopResult]: At program point L31-2(lines 31 36) the Hoare annotation is: (and (not (fp.eq ULTIMATE.start_fmax_double_~y ULTIMATE.start_fmax_double_~y)) (not (fp.eq ULTIMATE.start_fmax_double_~x ULTIMATE.start_fmax_double_~x))) [2020-10-20 00:33:36,293 INFO L274 CegarLoopResult]: For program point L31-3(lines 28 53) no Hoare annotation was computed. [2020-10-20 00:33:36,293 INFO L274 CegarLoopResult]: For program point L31-5(lines 31 36) no Hoare annotation was computed. [2020-10-20 00:33:36,294 INFO L270 CegarLoopResult]: At program point L31-6(lines 31 36) the Hoare annotation is: (and (not (fp.eq ULTIMATE.start_fmax_double_~y ULTIMATE.start_fmax_double_~y)) (not (fp.eq ULTIMATE.start_fmax_double_~x ULTIMATE.start_fmax_double_~x))) [2020-10-20 00:33:36,294 INFO L274 CegarLoopResult]: For program point L31-7(lines 28 53) no Hoare annotation was computed. [2020-10-20 00:33:36,294 INFO L270 CegarLoopResult]: At program point L52(lines 28 53) the Hoare annotation is: (and (not (fp.eq ULTIMATE.start_fmax_double_~x ULTIMATE.start_fmax_double_~x)) (not (fp.eq ULTIMATE.start_fmax_double_~y ULTIMATE.start_fmax_double_~y))) [2020-10-20 00:33:36,294 INFO L270 CegarLoopResult]: At program point L52-1(lines 28 53) the Hoare annotation is: (let ((.cse0 (not (fp.eq ULTIMATE.start_fmax_double_~y ULTIMATE.start_fmax_double_~y)))) (or (and .cse0 (not (fp.eq ULTIMATE.start_fmax_double_~x ULTIMATE.start_fmax_double_~x))) (and .cse0 (not (= (_ bv0 32) |ULTIMATE.start___fpclassify_double_#res|))))) [2020-10-20 00:33:36,294 INFO L274 CegarLoopResult]: For program point L48(lines 48 52) no Hoare annotation was computed. [2020-10-20 00:33:36,294 INFO L274 CegarLoopResult]: For program point L48-1(lines 48 52) no Hoare annotation was computed. [2020-10-20 00:33:36,294 INFO L277 CegarLoopResult]: At program point L77(lines 65 78) the Hoare annotation is: true [2020-10-20 00:33:36,294 INFO L274 CegarLoopResult]: For program point L44(lines 44 52) no Hoare annotation was computed. [2020-10-20 00:33:36,295 INFO L274 CegarLoopResult]: For program point L44-1(lines 44 52) no Hoare annotation was computed. [2020-10-20 00:33:36,295 INFO L274 CegarLoopResult]: For program point L73(lines 73 76) no Hoare annotation was computed. [2020-10-20 00:33:36,295 INFO L274 CegarLoopResult]: For program point L3(line 3) no Hoare annotation was computed. [2020-10-20 00:33:36,295 INFO L274 CegarLoopResult]: For program point L3-1(line 3) no Hoare annotation was computed. [2020-10-20 00:33:36,295 INFO L274 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-10-20 00:33:36,295 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-10-20 00:33:36,295 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-20 00:33:36,295 INFO L274 CegarLoopResult]: For program point L57(lines 57 58) no Hoare annotation was computed. [2020-10-20 00:33:36,296 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-10-20 00:33:36,296 INFO L274 CegarLoopResult]: For program point L41(lines 41 52) no Hoare annotation was computed. [2020-10-20 00:33:36,296 INFO L274 CegarLoopResult]: For program point L41-1(lines 41 52) no Hoare annotation was computed. [2020-10-20 00:33:36,296 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-20 00:33:36,296 INFO L274 CegarLoopResult]: For program point L62(line 62) no Hoare annotation was computed. [2020-10-20 00:33:36,296 INFO L274 CegarLoopResult]: For program point L62-2(line 62) no Hoare annotation was computed. [2020-10-20 00:33:36,296 INFO L270 CegarLoopResult]: At program point L62-3(lines 55 63) the Hoare annotation is: (and (exists ((currentRoundingMode RoundingMode)) (= (fp.div currentRoundingMode (_ +zero 11 53) (_ +zero 11 53)) ULTIMATE.start_fmax_double_~y)) (not (fp.eq |ULTIMATE.start_fmax_double_#res| |ULTIMATE.start_fmax_double_#res|))) [2020-10-20 00:33:36,296 INFO L274 CegarLoopResult]: For program point L59(lines 59 60) no Hoare annotation was computed. [2020-10-20 00:33:36,296 INFO L270 CegarLoopResult]: At program point L18(line 18) the Hoare annotation is: (and (exists ((currentRoundingMode RoundingMode)) (= (fp.div currentRoundingMode (_ +zero 11 53) (_ +zero 11 53)) ULTIMATE.start_fmax_double_~y)) (not (fp.eq |ULTIMATE.start_fmax_double_#res| |ULTIMATE.start_fmax_double_#res|)) (= (_ bv1 32) |ULTIMATE.start_isnan_double_#res|)) [2020-10-20 00:33:36,303 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-10-20 00:33:36,308 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-10-20 00:33:36,310 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-10-20 00:33:36,310 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-10-20 00:33:36,314 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 12:33:36 BoogieIcfgContainer [2020-10-20 00:33:36,315 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-20 00:33:36,315 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 00:33:36,315 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 00:33:36,316 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 00:33:36,316 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:33:31" (3/4) ... [2020-10-20 00:33:36,320 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-10-20 00:33:36,332 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2020-10-20 00:33:36,333 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2020-10-20 00:33:36,333 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-10-20 00:33:36,334 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-20 00:33:36,359 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == y) && !~fp.eq~DOUBLE(\result, \result) [2020-10-20 00:33:36,360 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == y) && !~fp.eq~DOUBLE(\result, \result)) && 1bv32 == \result [2020-10-20 00:33:36,360 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (!~fp.eq~DOUBLE(y, y) && !~fp.eq~DOUBLE(x, x)) || (!~fp.eq~DOUBLE(y, y) && !(0bv32 == \result)) [2020-10-20 00:33:36,396 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-20 00:33:36,396 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 00:33:36,398 INFO L168 Benchmark]: Toolchain (without parser) took 6166.80 ms. Allocated memory was 42.5 MB in the beginning and 53.0 MB in the end (delta: 10.5 MB). Free memory was 22.0 MB in the beginning and 17.5 MB in the end (delta: 4.5 MB). Peak memory consumption was 15.0 MB. Max. memory is 14.3 GB. [2020-10-20 00:33:36,399 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 32.0 MB. Free memory was 11.0 MB in the beginning and 11.0 MB in the end (delta: 47.4 kB). Peak memory consumption was 47.4 kB. Max. memory is 14.3 GB. [2020-10-20 00:33:36,400 INFO L168 Benchmark]: CACSL2BoogieTranslator took 423.53 ms. Allocated memory was 42.5 MB in the beginning and 43.0 MB in the end (delta: 524.3 kB). Free memory was 21.2 MB in the beginning and 20.9 MB in the end (delta: 243.0 kB). Peak memory consumption was 12.4 MB. Max. memory is 14.3 GB. [2020-10-20 00:33:36,401 INFO L168 Benchmark]: Boogie Procedure Inliner took 62.35 ms. Allocated memory is still 43.0 MB. Free memory was 20.9 MB in the beginning and 18.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 14.3 GB. [2020-10-20 00:33:36,401 INFO L168 Benchmark]: Boogie Preprocessor took 45.36 ms. Allocated memory is still 43.0 MB. Free memory was 18.8 MB in the beginning and 17.1 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.8 MB. Max. memory is 14.3 GB. [2020-10-20 00:33:36,402 INFO L168 Benchmark]: RCFGBuilder took 538.21 ms. Allocated memory was 43.0 MB in the beginning and 45.1 MB in the end (delta: 2.1 MB). Free memory was 16.9 MB in the beginning and 14.0 MB in the end (delta: 2.9 MB). Peak memory consumption was 7.7 MB. Max. memory is 14.3 GB. [2020-10-20 00:33:36,403 INFO L168 Benchmark]: TraceAbstraction took 5002.39 ms. Allocated memory was 45.1 MB in the beginning and 53.0 MB in the end (delta: 7.9 MB). Free memory was 13.5 MB in the beginning and 22.2 MB in the end (delta: -8.8 MB). Peak memory consumption was 12.1 MB. Max. memory is 14.3 GB. [2020-10-20 00:33:36,403 INFO L168 Benchmark]: Witness Printer took 80.90 ms. Allocated memory is still 53.0 MB. Free memory was 22.2 MB in the beginning and 17.5 MB in the end (delta: 4.7 MB). Peak memory consumption was 4.7 MB. Max. memory is 14.3 GB. [2020-10-20 00:33:36,407 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 32.0 MB. Free memory was 11.0 MB in the beginning and 11.0 MB in the end (delta: 47.4 kB). Peak memory consumption was 47.4 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 423.53 ms. Allocated memory was 42.5 MB in the beginning and 43.0 MB in the end (delta: 524.3 kB). Free memory was 21.2 MB in the beginning and 20.9 MB in the end (delta: 243.0 kB). Peak memory consumption was 12.4 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 62.35 ms. Allocated memory is still 43.0 MB. Free memory was 20.9 MB in the beginning and 18.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 45.36 ms. Allocated memory is still 43.0 MB. Free memory was 18.8 MB in the beginning and 17.1 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.8 MB. Max. memory is 14.3 GB. * RCFGBuilder took 538.21 ms. Allocated memory was 43.0 MB in the beginning and 45.1 MB in the end (delta: 2.1 MB). Free memory was 16.9 MB in the beginning and 14.0 MB in the end (delta: 2.9 MB). Peak memory consumption was 7.7 MB. Max. memory is 14.3 GB. * TraceAbstraction took 5002.39 ms. Allocated memory was 45.1 MB in the beginning and 53.0 MB in the end (delta: 7.9 MB). Free memory was 13.5 MB in the beginning and 22.2 MB in the end (delta: -8.8 MB). Peak memory consumption was 12.1 MB. Max. memory is 14.3 GB. * Witness Printer took 80.90 ms. Allocated memory is still 53.0 MB. Free memory was 22.2 MB in the beginning and 17.5 MB in the end (delta: 4.7 MB). Peak memory consumption was 4.7 MB. Max. memory is 14.3 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 3]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 55]: Loop Invariant [2020-10-20 00:33:36,416 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-10-20 00:33:36,416 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] Derived loop invariant: (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == y) && !~fp.eq~DOUBLE(\result, \result) - InvariantResult [Line: 18]: Loop Invariant [2020-10-20 00:33:36,417 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-10-20 00:33:36,417 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] Derived loop invariant: ((\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == y) && !~fp.eq~DOUBLE(\result, \result)) && 1bv32 == \result - InvariantResult [Line: 65]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 31]: Loop Invariant Derived loop invariant: !~fp.eq~DOUBLE(y, y) && !~fp.eq~DOUBLE(x, x) - InvariantResult [Line: 28]: Loop Invariant Derived loop invariant: (!~fp.eq~DOUBLE(y, y) && !~fp.eq~DOUBLE(x, x)) || (!~fp.eq~DOUBLE(y, y) && !(0bv32 == \result)) - InvariantResult [Line: 31]: Loop Invariant Derived loop invariant: !~fp.eq~DOUBLE(y, y) && !~fp.eq~DOUBLE(x, x) - InvariantResult [Line: 28]: Loop Invariant Derived loop invariant: !~fp.eq~DOUBLE(x, x) && !~fp.eq~DOUBLE(y, y) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 29 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4.5s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 1.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.3s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 182 SDtfs, 117 SDslu, 549 SDs, 0 SdLazy, 138 SolverSat, 19 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 181 GetRequests, 130 SyntacticMatches, 3 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 7 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 1.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=29occurred 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, 6 MinimizatonAttempts, 42 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 7 PreInvPairs, 19 NumberOfFragments, 74 HoareAnnotationTreeSize, 7 FomulaSimplifications, 184 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 39 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 88 NumberOfCodeBlocks, 88 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 164 ConstructedInterpolants, 36 QuantifiedInterpolants, 8416 SizeOfPredicates, 32 NumberOfNonLiveVariables, 399 ConjunctsInSsa, 38 ConjunctsInUnsatCore, 12 InterpolantComputations, 12 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 correct! Received shutdown request...