./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/float-newlib/double_req_bl_1230.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 54858612 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/float-newlib/double_req_bl_1230.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 858612fdb9071600e83746a6e504d4acbbe533c1 ....................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/float-newlib/double_req_bl_1230.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 858612fdb9071600e83746a6e504d4acbbe533c1 ...................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-5485861 [2020-10-25 21:53:43,827 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-25 21:53:43,830 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-25 21:53:43,866 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-25 21:53:43,867 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-25 21:53:43,869 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-25 21:53:43,870 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-25 21:53:43,875 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-25 21:53:43,880 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-25 21:53:43,882 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-25 21:53:43,883 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-25 21:53:43,885 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-25 21:53:43,891 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-25 21:53:43,894 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-25 21:53:43,896 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-25 21:53:43,898 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-25 21:53:43,900 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-25 21:53:43,906 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-25 21:53:43,909 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-25 21:53:43,915 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-25 21:53:43,921 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-25 21:53:43,923 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-25 21:53:43,925 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-25 21:53:43,927 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-25 21:53:43,936 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-25 21:53:43,938 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-25 21:53:43,939 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-25 21:53:43,940 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-25 21:53:43,942 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-25 21:53:43,943 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-25 21:53:43,944 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-25 21:53:43,945 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-25 21:53:43,946 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-25 21:53:43,951 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-25 21:53:43,953 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-25 21:53:43,953 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-25 21:53:43,954 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-25 21:53:43,955 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-25 21:53:43,955 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-25 21:53:43,957 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-25 21:53:43,958 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-25 21:53:43,960 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-25 21:53:43,996 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-25 21:53:43,997 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-25 21:53:43,998 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-25 21:53:43,999 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-25 21:53:43,999 INFO L138 SettingsManager]: * Use SBE=true [2020-10-25 21:53:43,999 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-25 21:53:43,999 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-25 21:53:43,999 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-25 21:53:44,000 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-25 21:53:44,000 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-25 21:53:44,000 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-25 21:53:44,000 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-25 21:53:44,001 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-25 21:53:44,001 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-25 21:53:44,001 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-25 21:53:44,001 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-25 21:53:44,001 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-25 21:53:44,002 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-25 21:53:44,002 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-25 21:53:44,002 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-25 21:53:44,002 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-25 21:53:44,003 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-25 21:53:44,003 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-25 21:53:44,003 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-25 21:53:44,003 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-25 21:53:44,003 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-25 21:53:44,004 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-25 21:53:44,004 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-25 21:53:44,004 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-25 21:53:44,004 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 858612fdb9071600e83746a6e504d4acbbe533c1 [2020-10-25 21:53:44,383 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-25 21:53:44,440 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-25 21:53:44,446 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-25 21:53:44,447 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-25 21:53:44,450 INFO L275 PluginConnector]: CDTParser initialized [2020-10-25 21:53:44,452 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/double_req_bl_1230.c [2020-10-25 21:53:44,555 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/65305a9c5/9306ba9da00b42b4ab63c8694ef286eb/FLAG73b62013c [2020-10-25 21:53:45,183 INFO L306 CDTParser]: Found 1 translation units. [2020-10-25 21:53:45,184 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_1230.c [2020-10-25 21:53:45,194 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/65305a9c5/9306ba9da00b42b4ab63c8694ef286eb/FLAG73b62013c [2020-10-25 21:53:45,496 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/65305a9c5/9306ba9da00b42b4ab63c8694ef286eb [2020-10-25 21:53:45,500 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-25 21:53:45,507 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-25 21:53:45,509 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-25 21:53:45,510 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-25 21:53:45,514 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-25 21:53:45,515 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 09:53:45" (1/1) ... [2020-10-25 21:53:45,519 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@17b8f87f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:53:45, skipping insertion in model container [2020-10-25 21:53:45,520 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 09:53:45" (1/1) ... [2020-10-25 21:53:45,529 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-25 21:53:45,547 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-25 21:53:45,734 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-25 21:53:45,745 INFO L203 MainTranslator]: Completed pre-run [2020-10-25 21:53:45,776 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-25 21:53:45,803 INFO L208 MainTranslator]: Completed translation [2020-10-25 21:53:45,804 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:53:45 WrapperNode [2020-10-25 21:53:45,804 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-25 21:53:45,805 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-25 21:53:45,806 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-25 21:53:45,806 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-25 21:53:45,813 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:53:45" (1/1) ... [2020-10-25 21:53:45,823 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:53:45" (1/1) ... [2020-10-25 21:53:45,920 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-25 21:53:45,921 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-25 21:53:45,922 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-25 21:53:45,922 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-25 21:53:45,931 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:53:45" (1/1) ... [2020-10-25 21:53:45,932 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:53:45" (1/1) ... [2020-10-25 21:53:45,936 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:53:45" (1/1) ... [2020-10-25 21:53:45,936 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:53:45" (1/1) ... [2020-10-25 21:53:45,960 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:53:45" (1/1) ... [2020-10-25 21:53:45,966 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:53:45" (1/1) ... [2020-10-25 21:53:45,969 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:53:45" (1/1) ... [2020-10-25 21:53:45,983 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-25 21:53:45,984 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-25 21:53:45,985 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-25 21:53:45,985 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-25 21:53:45,987 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:53:45" (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 [2020-10-25 21:53:46,055 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-25 21:53:46,055 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-25 21:53:46,055 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-25 21:53:46,056 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-25 21:53:46,056 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-25 21:53:46,056 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-25 21:53:46,056 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-25 21:53:46,435 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-25 21:53:46,435 INFO L298 CfgBuilder]: Removed 18 assume(true) statements. [2020-10-25 21:53:46,437 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 09:53:46 BoogieIcfgContainer [2020-10-25 21:53:46,438 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-25 21:53:46,439 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-25 21:53:46,440 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-25 21:53:46,444 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-25 21:53:46,444 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.10 09:53:45" (1/3) ... [2020-10-25 21:53:46,445 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8908544 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 09:53:46, skipping insertion in model container [2020-10-25 21:53:46,445 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:53:45" (2/3) ... [2020-10-25 21:53:46,446 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8908544 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 09:53:46, skipping insertion in model container [2020-10-25 21:53:46,446 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 09:53:46" (3/3) ... [2020-10-25 21:53:46,448 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1230.c [2020-10-25 21:53:46,465 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-25 21:53:46,473 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-25 21:53:46,511 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-25 21:53:46,587 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-25 21:53:46,588 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-25 21:53:46,588 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-25 21:53:46,588 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-25 21:53:46,588 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-25 21:53:46,589 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-25 21:53:46,589 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-25 21:53:46,589 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-25 21:53:46,630 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states. [2020-10-25 21:53:46,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-25 21:53:46,641 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 21:53:46,642 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 21:53:46,643 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 21:53:46,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 21:53:46,654 INFO L82 PathProgramCache]: Analyzing trace with hash -958093107, now seen corresponding path program 1 times [2020-10-25 21:53:46,667 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 21:53:46,668 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531233278] [2020-10-25 21:53:46,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 21:53:46,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 21:53:46,899 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 21:53:46,900 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531233278] [2020-10-25 21:53:46,901 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-25 21:53:46,901 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-25 21:53:46,902 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416109196] [2020-10-25 21:53:46,908 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-25 21:53:46,909 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 21:53:46,926 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-25 21:53:46,927 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-25 21:53:46,930 INFO L87 Difference]: Start difference. First operand 29 states. Second operand 2 states. [2020-10-25 21:53:46,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 21:53:46,952 INFO L93 Difference]: Finished difference Result 55 states and 85 transitions. [2020-10-25 21:53:46,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-25 21:53:46,954 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-10-25 21:53:46,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 21:53:46,967 INFO L225 Difference]: With dead ends: 55 [2020-10-25 21:53:46,967 INFO L226 Difference]: Without dead ends: 25 [2020-10-25 21:53:46,971 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 [2020-10-25 21:53:46,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2020-10-25 21:53:47,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2020-10-25 21:53:47,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-10-25 21:53:47,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 35 transitions. [2020-10-25 21:53:47,017 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 35 transitions. Word has length 10 [2020-10-25 21:53:47,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 21:53:47,018 INFO L481 AbstractCegarLoop]: Abstraction has 25 states and 35 transitions. [2020-10-25 21:53:47,018 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-25 21:53:47,019 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 35 transitions. [2020-10-25 21:53:47,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-25 21:53:47,020 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 21:53:47,020 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 21:53:47,020 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-25 21:53:47,021 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 21:53:47,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 21:53:47,022 INFO L82 PathProgramCache]: Analyzing trace with hash 1001566992, now seen corresponding path program 1 times [2020-10-25 21:53:47,022 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 21:53:47,023 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1181460386] [2020-10-25 21:53:47,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 21:53:47,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 21:53:47,188 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 21:53:47,188 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1181460386] [2020-10-25 21:53:47,189 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-25 21:53:47,189 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-25 21:53:47,189 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014227311] [2020-10-25 21:53:47,193 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-25 21:53:47,193 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 21:53:47,194 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-25 21:53:47,199 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-25 21:53:47,199 INFO L87 Difference]: Start difference. First operand 25 states and 35 transitions. Second operand 4 states. [2020-10-25 21:53:47,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 21:53:47,343 INFO L93 Difference]: Finished difference Result 41 states and 52 transitions. [2020-10-25 21:53:47,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-25 21:53:47,345 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-10-25 21:53:47,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 21:53:47,346 INFO L225 Difference]: With dead ends: 41 [2020-10-25 21:53:47,347 INFO L226 Difference]: Without dead ends: 36 [2020-10-25 21:53:47,348 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 [2020-10-25 21:53:47,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-10-25 21:53:47,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 27. [2020-10-25 21:53:47,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-10-25 21:53:47,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 37 transitions. [2020-10-25 21:53:47,363 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 37 transitions. Word has length 11 [2020-10-25 21:53:47,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 21:53:47,364 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 37 transitions. [2020-10-25 21:53:47,364 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-25 21:53:47,364 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 37 transitions. [2020-10-25 21:53:47,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-25 21:53:47,365 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 21:53:47,365 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 21:53:47,367 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-25 21:53:47,368 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 21:53:47,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 21:53:47,369 INFO L82 PathProgramCache]: Analyzing trace with hash 502183504, now seen corresponding path program 1 times [2020-10-25 21:53:47,370 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 21:53:47,371 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027564675] [2020-10-25 21:53:47,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 21:53:47,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 21:53:47,489 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 21:53:47,502 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1027564675] [2020-10-25 21:53:47,502 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-25 21:53:47,502 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-25 21:53:47,503 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430754645] [2020-10-25 21:53:47,503 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-25 21:53:47,504 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 21:53:47,506 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-25 21:53:47,506 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-25 21:53:47,506 INFO L87 Difference]: Start difference. First operand 27 states and 37 transitions. Second operand 4 states. [2020-10-25 21:53:47,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 21:53:47,568 INFO L93 Difference]: Finished difference Result 43 states and 54 transitions. [2020-10-25 21:53:47,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-25 21:53:47,569 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-10-25 21:53:47,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 21:53:47,570 INFO L225 Difference]: With dead ends: 43 [2020-10-25 21:53:47,570 INFO L226 Difference]: Without dead ends: 38 [2020-10-25 21:53:47,571 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 [2020-10-25 21:53:47,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-10-25 21:53:47,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 27. [2020-10-25 21:53:47,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-10-25 21:53:47,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 37 transitions. [2020-10-25 21:53:47,577 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 37 transitions. Word has length 12 [2020-10-25 21:53:47,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 21:53:47,577 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 37 transitions. [2020-10-25 21:53:47,577 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-25 21:53:47,577 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 37 transitions. [2020-10-25 21:53:47,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-25 21:53:47,578 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 21:53:47,578 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 21:53:47,579 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-25 21:53:47,579 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 21:53:47,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 21:53:47,580 INFO L82 PathProgramCache]: Analyzing trace with hash -1951251627, now seen corresponding path program 1 times [2020-10-25 21:53:47,580 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 21:53:47,580 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [421212443] [2020-10-25 21:53:47,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 21:53:47,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 21:53:47,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 21:53:47,663 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [421212443] [2020-10-25 21:53:47,665 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-25 21:53:47,666 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-25 21:53:47,666 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610904598] [2020-10-25 21:53:47,666 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-25 21:53:47,667 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 21:53:47,667 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-25 21:53:47,668 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-25 21:53:47,668 INFO L87 Difference]: Start difference. First operand 27 states and 37 transitions. Second operand 4 states. [2020-10-25 21:53:47,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 21:53:47,784 INFO L93 Difference]: Finished difference Result 45 states and 56 transitions. [2020-10-25 21:53:47,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-25 21:53:47,787 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-10-25 21:53:47,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 21:53:47,789 INFO L225 Difference]: With dead ends: 45 [2020-10-25 21:53:47,789 INFO L226 Difference]: Without dead ends: 40 [2020-10-25 21:53:47,792 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 [2020-10-25 21:53:47,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-10-25 21:53:47,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 27. [2020-10-25 21:53:47,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-10-25 21:53:47,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 37 transitions. [2020-10-25 21:53:47,803 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 37 transitions. Word has length 13 [2020-10-25 21:53:47,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 21:53:47,804 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 37 transitions. [2020-10-25 21:53:47,804 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-25 21:53:47,804 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 37 transitions. [2020-10-25 21:53:47,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-25 21:53:47,805 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 21:53:47,805 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 21:53:47,806 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-25 21:53:47,806 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 21:53:47,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 21:53:47,806 INFO L82 PathProgramCache]: Analyzing trace with hash -555778251, now seen corresponding path program 1 times [2020-10-25 21:53:47,807 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 21:53:47,808 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [594161394] [2020-10-25 21:53:47,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 21:53:47,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 21:53:47,894 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 21:53:47,896 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [594161394] [2020-10-25 21:53:47,896 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-25 21:53:47,896 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-25 21:53:47,896 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312269136] [2020-10-25 21:53:47,897 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-25 21:53:47,897 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 21:53:47,898 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-25 21:53:47,898 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-25 21:53:47,898 INFO L87 Difference]: Start difference. First operand 27 states and 37 transitions. Second operand 4 states. [2020-10-25 21:53:47,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 21:53:47,973 INFO L93 Difference]: Finished difference Result 43 states and 54 transitions. [2020-10-25 21:53:47,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-25 21:53:47,974 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-10-25 21:53:47,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 21:53:47,975 INFO L225 Difference]: With dead ends: 43 [2020-10-25 21:53:47,975 INFO L226 Difference]: Without dead ends: 38 [2020-10-25 21:53:47,976 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 [2020-10-25 21:53:47,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-10-25 21:53:47,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 27. [2020-10-25 21:53:47,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-10-25 21:53:47,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 37 transitions. [2020-10-25 21:53:47,981 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 37 transitions. Word has length 14 [2020-10-25 21:53:47,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 21:53:47,982 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 37 transitions. [2020-10-25 21:53:47,982 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-25 21:53:47,982 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 37 transitions. [2020-10-25 21:53:47,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-25 21:53:47,983 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 21:53:47,983 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 21:53:47,983 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-25 21:53:47,983 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 21:53:47,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 21:53:47,984 INFO L82 PathProgramCache]: Analyzing trace with hash 1219229111, now seen corresponding path program 1 times [2020-10-25 21:53:47,984 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 21:53:47,984 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [287741492] [2020-10-25 21:53:47,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 21:53:48,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-25 21:53:48,014 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-25 21:53:48,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-25 21:53:48,034 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-25 21:53:48,063 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-25 21:53:48,063 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-25 21:53:48,063 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-25 21:53:48,100 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.10 09:53:48 BoogieIcfgContainer [2020-10-25 21:53:48,100 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-25 21:53:48,101 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-25 21:53:48,101 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-25 21:53:48,101 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-25 21:53:48,102 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 09:53:46" (3/4) ... [2020-10-25 21:53:48,106 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-25 21:53:48,106 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-25 21:53:48,109 INFO L168 Benchmark]: Toolchain (without parser) took 2605.30 ms. Allocated memory was 60.8 MB in the beginning and 75.5 MB in the end (delta: 14.7 MB). Free memory was 43.5 MB in the beginning and 48.1 MB in the end (delta: -4.5 MB). Peak memory consumption was 11.5 MB. Max. memory is 16.1 GB. [2020-10-25 21:53:48,109 INFO L168 Benchmark]: CDTParser took 0.32 ms. Allocated memory is still 44.0 MB. Free memory was 22.1 MB in the beginning and 22.1 MB in the end (delta: 31.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-25 21:53:48,110 INFO L168 Benchmark]: CACSL2BoogieTranslator took 295.24 ms. Allocated memory is still 60.8 MB. Free memory was 42.9 MB in the beginning and 32.7 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-10-25 21:53:48,111 INFO L168 Benchmark]: Boogie Procedure Inliner took 114.99 ms. Allocated memory is still 60.8 MB. Free memory was 32.7 MB in the beginning and 44.6 MB in the end (delta: -11.9 MB). Peak memory consumption was 3.0 MB. Max. memory is 16.1 GB. [2020-10-25 21:53:48,112 INFO L168 Benchmark]: Boogie Preprocessor took 62.01 ms. Allocated memory is still 60.8 MB. Free memory was 44.6 MB in the beginning and 43.1 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-25 21:53:48,113 INFO L168 Benchmark]: RCFGBuilder took 453.63 ms. Allocated memory is still 60.8 MB. Free memory was 43.1 MB in the beginning and 37.9 MB in the end (delta: 5.2 MB). Peak memory consumption was 15.8 MB. Max. memory is 16.1 GB. [2020-10-25 21:53:48,114 INFO L168 Benchmark]: TraceAbstraction took 1660.83 ms. Allocated memory was 60.8 MB in the beginning and 75.5 MB in the end (delta: 14.7 MB). Free memory was 37.4 MB in the beginning and 48.6 MB in the end (delta: -11.2 MB). Peak memory consumption was 3.1 MB. Max. memory is 16.1 GB. [2020-10-25 21:53:48,114 INFO L168 Benchmark]: Witness Printer took 5.11 ms. Allocated memory is still 75.5 MB. Free memory was 48.6 MB in the beginning and 48.1 MB in the end (delta: 534.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-25 21:53:48,119 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32 ms. Allocated memory is still 44.0 MB. Free memory was 22.1 MB in the beginning and 22.1 MB in the end (delta: 31.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 295.24 ms. Allocated memory is still 60.8 MB. Free memory was 42.9 MB in the beginning and 32.7 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 114.99 ms. Allocated memory is still 60.8 MB. Free memory was 32.7 MB in the beginning and 44.6 MB in the end (delta: -11.9 MB). Peak memory consumption was 3.0 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 62.01 ms. Allocated memory is still 60.8 MB. Free memory was 44.6 MB in the beginning and 43.1 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 453.63 ms. Allocated memory is still 60.8 MB. Free memory was 43.1 MB in the beginning and 37.9 MB in the end (delta: 5.2 MB). Peak memory consumption was 15.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1660.83 ms. Allocated memory was 60.8 MB in the beginning and 75.5 MB in the end (delta: 14.7 MB). Free memory was 37.4 MB in the beginning and 48.6 MB in the end (delta: -11.2 MB). Peak memory consumption was 3.1 MB. Max. memory is 16.1 GB. * Witness Printer took 5.11 ms. Allocated memory is still 75.5 MB. Free memory was 48.6 MB in the beginning and 48.1 MB in the end (delta: 534.7 kB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 3]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 18, overapproximation of someBinaryArithmeticDOUBLEoperation at line 63. Possible FailurePath: [L63] double x = 0.0 / 0.0; [L64] double y = 0.0 / 0.0; [L20] __uint32_t msw, lsw; [L23] ieee_double_shape_type ew_u; [L24] ew_u.value = (x) [L25] EXPR ew_u.parts.msw [L25] (msw) = ew_u.parts.msw [L26] EXPR ew_u.parts.lsw [L26] (lsw) = ew_u.parts.lsw [L29-L30] COND FALSE !((msw == 0x00000000 && lsw == 0x00000000) || (msw == 0x80000000 && lsw == 0x00000000)) [L32-L33] COND FALSE !((msw >= 0x00100000 && msw <= 0x7fefffff) || (msw >= 0x80100000 && msw <= 0xffefffff)) [L35-L36] COND FALSE !(( msw <= 0x000fffff) || (msw >= 0x80000000 && msw <= 0x800fffff)) [L39-L40] COND FALSE !((msw == 0x7ff00000 && lsw == 0x00000000) || (msw == 0xfff00000 && lsw == 0x00000000)) [L43] return 0; [L47] COND TRUE __fpclassify_double(x) == 0 [L48] return y; [L65] double res = fmin_double(x, y); [L18] return x != x; [L67] COND TRUE !isnan_double(res) [L3] __assert_fail("0", "double_req_bl_1230.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: 1.4s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 0.4s, 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, 0.2s 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, 0.3s InterpolantComputationTime, 74 NumberOfCodeBlocks, 74 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 55 ConstructedInterpolants, 0 QuantifiedInterpolants, 799 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.0-5485861 [2020-10-25 21:53:50,772 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-25 21:53:50,777 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-25 21:53:50,820 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-25 21:53:50,820 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-25 21:53:50,822 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-25 21:53:50,824 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-25 21:53:50,826 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-25 21:53:50,829 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-25 21:53:50,830 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-25 21:53:50,832 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-25 21:53:50,833 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-25 21:53:50,834 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-25 21:53:50,835 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-25 21:53:50,837 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-25 21:53:50,838 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-25 21:53:50,839 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-25 21:53:50,841 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-25 21:53:50,861 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-25 21:53:50,864 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-25 21:53:50,866 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-25 21:53:50,868 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-25 21:53:50,870 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-25 21:53:50,871 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-25 21:53:50,875 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-25 21:53:50,875 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-25 21:53:50,876 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-25 21:53:50,877 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-25 21:53:50,878 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-25 21:53:50,879 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-25 21:53:50,879 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-25 21:53:50,880 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-25 21:53:50,881 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-25 21:53:50,882 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-25 21:53:50,884 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-25 21:53:50,884 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-25 21:53:50,885 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-25 21:53:50,886 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-25 21:53:50,886 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-25 21:53:50,887 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-25 21:53:50,888 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-25 21:53:50,889 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-10-25 21:53:50,918 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-25 21:53:50,918 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-25 21:53:50,920 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-25 21:53:50,920 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-25 21:53:50,920 INFO L138 SettingsManager]: * Use SBE=true [2020-10-25 21:53:50,920 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-25 21:53:50,921 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-25 21:53:50,921 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-25 21:53:50,921 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-25 21:53:50,921 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-25 21:53:50,922 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-25 21:53:50,922 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-25 21:53:50,922 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-10-25 21:53:50,922 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-10-25 21:53:50,922 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-25 21:53:50,923 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-25 21:53:50,923 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-25 21:53:50,923 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-25 21:53:50,923 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-25 21:53:50,923 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-25 21:53:50,924 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-25 21:53:50,924 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-25 21:53:50,924 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-25 21:53:50,924 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-25 21:53:50,924 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-25 21:53:50,925 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-25 21:53:50,925 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-10-25 21:53:50,925 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-10-25 21:53:50,925 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-25 21:53:50,925 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-25 21:53:50,926 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-25 21:53:50,926 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 858612fdb9071600e83746a6e504d4acbbe533c1 [2020-10-25 21:53:51,377 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-25 21:53:51,407 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-25 21:53:51,411 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-25 21:53:51,412 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-25 21:53:51,413 INFO L275 PluginConnector]: CDTParser initialized [2020-10-25 21:53:51,414 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/double_req_bl_1230.c [2020-10-25 21:53:51,520 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/594046e3b/e188450e454a4570975e97104c03bf51/FLAG1739cf442 [2020-10-25 21:53:52,237 INFO L306 CDTParser]: Found 1 translation units. [2020-10-25 21:53:52,238 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_1230.c [2020-10-25 21:53:52,253 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/594046e3b/e188450e454a4570975e97104c03bf51/FLAG1739cf442 [2020-10-25 21:53:52,591 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/594046e3b/e188450e454a4570975e97104c03bf51 [2020-10-25 21:53:52,595 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-25 21:53:52,603 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-25 21:53:52,608 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-25 21:53:52,609 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-25 21:53:52,613 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-25 21:53:52,615 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 09:53:52" (1/1) ... [2020-10-25 21:53:52,619 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@694ec8d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:53:52, skipping insertion in model container [2020-10-25 21:53:52,620 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 09:53:52" (1/1) ... [2020-10-25 21:53:52,630 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-25 21:53:52,657 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-25 21:53:52,908 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-25 21:53:52,925 INFO L203 MainTranslator]: Completed pre-run [2020-10-25 21:53:52,954 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-25 21:53:52,983 INFO L208 MainTranslator]: Completed translation [2020-10-25 21:53:52,983 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:53:52 WrapperNode [2020-10-25 21:53:52,984 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-25 21:53:52,986 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-25 21:53:52,987 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-25 21:53:52,990 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-25 21:53:52,999 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:53:52" (1/1) ... [2020-10-25 21:53:53,011 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:53:52" (1/1) ... [2020-10-25 21:53:53,040 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-25 21:53:53,041 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-25 21:53:53,041 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-25 21:53:53,042 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-25 21:53:53,051 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:53:52" (1/1) ... [2020-10-25 21:53:53,052 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:53:52" (1/1) ... [2020-10-25 21:53:53,057 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:53:52" (1/1) ... [2020-10-25 21:53:53,057 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:53:52" (1/1) ... [2020-10-25 21:53:53,069 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:53:52" (1/1) ... [2020-10-25 21:53:53,074 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:53:52" (1/1) ... [2020-10-25 21:53:53,077 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:53:52" (1/1) ... [2020-10-25 21:53:53,081 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-25 21:53:53,083 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-25 21:53:53,083 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-25 21:53:53,083 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-25 21:53:53,084 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:53:52" (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 [2020-10-25 21:53:53,179 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2020-10-25 21:53:53,181 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-10-25 21:53:53,181 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-25 21:53:53,181 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-10-25 21:53:53,182 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-25 21:53:53,182 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-25 21:53:53,182 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-25 21:53:53,885 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-25 21:53:53,885 INFO L298 CfgBuilder]: Removed 18 assume(true) statements. [2020-10-25 21:53:53,887 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 09:53:53 BoogieIcfgContainer [2020-10-25 21:53:53,888 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-25 21:53:53,890 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-25 21:53:53,891 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-25 21:53:53,895 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-25 21:53:53,895 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.10 09:53:52" (1/3) ... [2020-10-25 21:53:53,897 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1cd427f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 09:53:53, skipping insertion in model container [2020-10-25 21:53:53,897 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:53:52" (2/3) ... [2020-10-25 21:53:53,897 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1cd427f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 09:53:53, skipping insertion in model container [2020-10-25 21:53:53,898 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 09:53:53" (3/3) ... [2020-10-25 21:53:53,900 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1230.c [2020-10-25 21:53:53,916 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-25 21:53:53,922 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-25 21:53:53,940 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-25 21:53:53,984 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-25 21:53:53,984 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-25 21:53:53,984 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-25 21:53:53,984 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-25 21:53:53,984 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-25 21:53:53,985 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-25 21:53:53,985 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-25 21:53:53,985 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-25 21:53:54,000 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states. [2020-10-25 21:53:54,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-25 21:53:54,007 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 21:53:54,008 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 21:53:54,008 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 21:53:54,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 21:53:54,015 INFO L82 PathProgramCache]: Analyzing trace with hash -958093107, now seen corresponding path program 1 times [2020-10-25 21:53:54,028 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-25 21:53:54,029 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1502869635] [2020-10-25 21:53:54,029 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 [2020-10-25 21:53:54,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 21:53:54,161 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 1 conjunts are in the unsatisfiable core [2020-10-25 21:53:54,166 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-25 21:53:54,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 21:53:54,182 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-25 21:53:54,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 21:53:54,188 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1502869635] [2020-10-25 21:53:54,188 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-25 21:53:54,189 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-10-25 21:53:54,190 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131637739] [2020-10-25 21:53:54,195 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-25 21:53:54,195 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-25 21:53:54,210 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-25 21:53:54,211 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-25 21:53:54,214 INFO L87 Difference]: Start difference. First operand 29 states. Second operand 2 states. [2020-10-25 21:53:54,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 21:53:54,243 INFO L93 Difference]: Finished difference Result 55 states and 85 transitions. [2020-10-25 21:53:54,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-25 21:53:54,244 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-10-25 21:53:54,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 21:53:54,255 INFO L225 Difference]: With dead ends: 55 [2020-10-25 21:53:54,256 INFO L226 Difference]: Without dead ends: 25 [2020-10-25 21:53:54,259 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 [2020-10-25 21:53:54,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2020-10-25 21:53:54,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2020-10-25 21:53:54,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-10-25 21:53:54,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 35 transitions. [2020-10-25 21:53:54,300 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 35 transitions. Word has length 10 [2020-10-25 21:53:54,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 21:53:54,300 INFO L481 AbstractCegarLoop]: Abstraction has 25 states and 35 transitions. [2020-10-25 21:53:54,300 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-25 21:53:54,301 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 35 transitions. [2020-10-25 21:53:54,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-25 21:53:54,301 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 21:53:54,302 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 21:53:54,516 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-10-25 21:53:54,517 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 21:53:54,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 21:53:54,519 INFO L82 PathProgramCache]: Analyzing trace with hash 1001566992, now seen corresponding path program 1 times [2020-10-25 21:53:54,520 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-25 21:53:54,520 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [492355444] [2020-10-25 21:53:54,520 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 [2020-10-25 21:53:54,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 21:53:54,638 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 3 conjunts are in the unsatisfiable core [2020-10-25 21:53:54,639 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-25 21:53:54,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 21:53:54,678 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-25 21:53:54,703 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 21:53:54,704 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [492355444] [2020-10-25 21:53:54,704 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-25 21:53:54,704 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2020-10-25 21:53:54,704 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173487177] [2020-10-25 21:53:54,706 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-25 21:53:54,706 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-25 21:53:54,707 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-25 21:53:54,708 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-25 21:53:54,708 INFO L87 Difference]: Start difference. First operand 25 states and 35 transitions. Second operand 6 states. [2020-10-25 21:53:54,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 21:53:54,905 INFO L93 Difference]: Finished difference Result 52 states and 65 transitions. [2020-10-25 21:53:54,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-25 21:53:54,906 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2020-10-25 21:53:54,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 21:53:54,908 INFO L225 Difference]: With dead ends: 52 [2020-10-25 21:53:54,908 INFO L226 Difference]: Without dead ends: 47 [2020-10-25 21:53:54,909 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 [2020-10-25 21:53:54,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-10-25 21:53:54,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 27. [2020-10-25 21:53:54,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-10-25 21:53:54,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 37 transitions. [2020-10-25 21:53:54,935 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 37 transitions. Word has length 11 [2020-10-25 21:53:54,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 21:53:54,936 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 37 transitions. [2020-10-25 21:53:54,936 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-25 21:53:54,936 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 37 transitions. [2020-10-25 21:53:54,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-25 21:53:54,937 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 21:53:54,938 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 21:53:55,140 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-10-25 21:53:55,142 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 21:53:55,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 21:53:55,143 INFO L82 PathProgramCache]: Analyzing trace with hash 1219229111, now seen corresponding path program 1 times [2020-10-25 21:53:55,145 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-25 21:53:55,146 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2059015741] [2020-10-25 21:53:55,146 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 [2020-10-25 21:53:55,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 21:53:55,258 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-25 21:53:55,260 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-25 21:53:55,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 21:53:55,391 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-25 21:53:55,514 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 21:53:55,514 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2059015741] [2020-10-25 21:53:55,515 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-25 21:53:55,515 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2020-10-25 21:53:55,515 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105313871] [2020-10-25 21:53:55,516 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-25 21:53:55,516 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-25 21:53:55,517 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-25 21:53:55,517 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-25 21:53:55,517 INFO L87 Difference]: Start difference. First operand 27 states and 37 transitions. Second operand 10 states. [2020-10-25 21:53:55,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 21:53:55,944 INFO L93 Difference]: Finished difference Result 36 states and 45 transitions. [2020-10-25 21:53:55,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-25 21:53:55,945 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 14 [2020-10-25 21:53:55,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 21:53:55,946 INFO L225 Difference]: With dead ends: 36 [2020-10-25 21:53:55,946 INFO L226 Difference]: Without dead ends: 27 [2020-10-25 21:53:55,947 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 [2020-10-25 21:53:55,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-10-25 21:53:55,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 25. [2020-10-25 21:53:55,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-10-25 21:53:55,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 33 transitions. [2020-10-25 21:53:55,952 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 33 transitions. Word has length 14 [2020-10-25 21:53:55,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 21:53:55,953 INFO L481 AbstractCegarLoop]: Abstraction has 25 states and 33 transitions. [2020-10-25 21:53:55,953 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-25 21:53:55,953 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 33 transitions. [2020-10-25 21:53:55,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-25 21:53:55,954 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 21:53:55,954 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 21:53:56,155 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-10-25 21:53:56,156 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 21:53:56,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 21:53:56,157 INFO L82 PathProgramCache]: Analyzing trace with hash 1012428811, now seen corresponding path program 1 times [2020-10-25 21:53:56,158 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-25 21:53:56,159 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1486840857] [2020-10-25 21:53:56,159 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 [2020-10-25 21:53:56,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 21:53:56,310 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 3 conjunts are in the unsatisfiable core [2020-10-25 21:53:56,311 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-25 21:53:56,354 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 21:53:56,355 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-25 21:53:56,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 21:53:56,379 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1486840857] [2020-10-25 21:53:56,379 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-25 21:53:56,380 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2020-10-25 21:53:56,380 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430154869] [2020-10-25 21:53:56,380 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-25 21:53:56,380 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-25 21:53:56,381 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-25 21:53:56,382 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-25 21:53:56,382 INFO L87 Difference]: Start difference. First operand 25 states and 33 transitions. Second operand 6 states. [2020-10-25 21:53:56,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 21:53:56,524 INFO L93 Difference]: Finished difference Result 52 states and 59 transitions. [2020-10-25 21:53:56,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-25 21:53:56,524 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2020-10-25 21:53:56,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 21:53:56,525 INFO L225 Difference]: With dead ends: 52 [2020-10-25 21:53:56,526 INFO L226 Difference]: Without dead ends: 47 [2020-10-25 21:53:56,526 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 [2020-10-25 21:53:56,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-10-25 21:53:56,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 27. [2020-10-25 21:53:56,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-10-25 21:53:56,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 35 transitions. [2020-10-25 21:53:56,533 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 35 transitions. Word has length 16 [2020-10-25 21:53:56,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 21:53:56,533 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 35 transitions. [2020-10-25 21:53:56,534 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-25 21:53:56,534 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 35 transitions. [2020-10-25 21:53:56,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-25 21:53:56,534 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 21:53:56,535 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 21:53:56,748 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-10-25 21:53:56,749 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 21:53:56,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 21:53:56,750 INFO L82 PathProgramCache]: Analyzing trace with hash -356841937, now seen corresponding path program 1 times [2020-10-25 21:53:56,751 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-25 21:53:56,752 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1147744247] [2020-10-25 21:53:56,752 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 [2020-10-25 21:53:56,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 21:53:56,907 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-25 21:53:56,909 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-25 21:53:57,085 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 21:53:57,085 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-25 21:53:57,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 21:53:57,256 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1147744247] [2020-10-25 21:53:57,256 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-25 21:53:57,256 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 12 [2020-10-25 21:53:57,256 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071023749] [2020-10-25 21:53:57,257 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-25 21:53:57,258 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-25 21:53:57,258 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-25 21:53:57,259 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2020-10-25 21:53:57,259 INFO L87 Difference]: Start difference. First operand 27 states and 35 transitions. Second operand 12 states. [2020-10-25 21:53:57,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 21:53:57,837 INFO L93 Difference]: Finished difference Result 32 states and 39 transitions. [2020-10-25 21:53:57,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-25 21:53:57,838 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 18 [2020-10-25 21:53:57,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 21:53:57,839 INFO L225 Difference]: With dead ends: 32 [2020-10-25 21:53:57,839 INFO L226 Difference]: Without dead ends: 23 [2020-10-25 21:53:57,842 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 3 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2020-10-25 21:53:57,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-10-25 21:53:57,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2020-10-25 21:53:57,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-10-25 21:53:57,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2020-10-25 21:53:57,854 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 18 [2020-10-25 21:53:57,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 21:53:57,854 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2020-10-25 21:53:57,854 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-25 21:53:57,854 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2020-10-25 21:53:57,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-25 21:53:57,855 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 21:53:57,855 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 21:53:58,066 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2020-10-25 21:53:58,067 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 21:53:58,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 21:53:58,068 INFO L82 PathProgramCache]: Analyzing trace with hash -208376157, now seen corresponding path program 1 times [2020-10-25 21:53:58,069 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-25 21:53:58,069 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [638472970] [2020-10-25 21:53:58,069 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 [2020-10-25 21:53:58,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 21:53:58,224 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-25 21:53:58,226 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-25 21:53:58,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 21:53:58,373 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-25 21:53:58,483 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 21:53:58,487 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [638472970] [2020-10-25 21:53:58,487 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-25 21:53:58,488 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2020-10-25 21:53:58,488 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426372632] [2020-10-25 21:53:58,488 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-25 21:53:58,489 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-25 21:53:58,491 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-25 21:53:58,492 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-25 21:53:58,492 INFO L87 Difference]: Start difference. First operand 23 states and 26 transitions. Second operand 10 states. [2020-10-25 21:53:58,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 21:53:58,874 INFO L93 Difference]: Finished difference Result 23 states and 26 transitions. [2020-10-25 21:53:58,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-25 21:53:58,874 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 19 [2020-10-25 21:53:58,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 21:53:58,875 INFO L225 Difference]: With dead ends: 23 [2020-10-25 21:53:58,875 INFO L226 Difference]: Without dead ends: 0 [2020-10-25 21:53:58,876 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2020-10-25 21:53:58,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-25 21:53:58,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-25 21:53:58,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-25 21:53:58,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-25 21:53:58,877 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 19 [2020-10-25 21:53:58,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 21:53:58,877 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-25 21:53:58,877 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-25 21:53:58,877 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-25 21:53:58,877 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-25 21:53:59,082 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 mathsat -unsat_core_generation=3 [2020-10-25 21:53:59,086 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-25 21:53:59,316 INFO L274 CegarLoopResult]: For program point L52(line 52) no Hoare annotation was computed. [2020-10-25 21:53:59,316 INFO L274 CegarLoopResult]: For program point L52-2(line 52) no Hoare annotation was computed. [2020-10-25 21:53:59,316 INFO L270 CegarLoopResult]: At program point L52-3(lines 46 53) the Hoare annotation is: (and (exists ((currentRoundingMode RoundingMode)) (= (fp.div currentRoundingMode (_ +zero 11 53) (_ +zero 11 53)) |ULTIMATE.start_fmin_double_#res|)) (not (fp.eq ULTIMATE.start_fmin_double_~y ULTIMATE.start_fmin_double_~y))) [2020-10-25 21:53:59,316 INFO L274 CegarLoopResult]: For program point L3(line 3) no Hoare annotation was computed. [2020-10-25 21:53:59,316 INFO L274 CegarLoopResult]: For program point L3-1(line 3) no Hoare annotation was computed. [2020-10-25 21:53:59,317 INFO L274 CegarLoopResult]: For program point L32(lines 32 43) no Hoare annotation was computed. [2020-10-25 21:53:59,317 INFO L274 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-10-25 21:53:59,317 INFO L274 CegarLoopResult]: For program point L32-1(lines 32 43) no Hoare annotation was computed. [2020-10-25 21:53:59,317 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-10-25 21:53:59,317 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-25 21:53:59,318 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-10-25 21:53:59,318 INFO L274 CegarLoopResult]: For program point L49(lines 49 50) no Hoare annotation was computed. [2020-10-25 21:53:59,318 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-25 21:53:59,318 INFO L274 CegarLoopResult]: For program point L67(lines 67 70) no Hoare annotation was computed. [2020-10-25 21:53:59,318 INFO L274 CegarLoopResult]: For program point L22-1(lines 22 27) no Hoare annotation was computed. [2020-10-25 21:53:59,318 INFO L270 CegarLoopResult]: At program point L22-2(lines 22 27) the Hoare annotation is: (and (not (fp.eq ULTIMATE.start_fmin_double_~x ULTIMATE.start_fmin_double_~x)) (not (fp.eq ULTIMATE.start_fmin_double_~y ULTIMATE.start_fmin_double_~y))) [2020-10-25 21:53:59,318 INFO L274 CegarLoopResult]: For program point L22-3(lines 19 44) no Hoare annotation was computed. [2020-10-25 21:53:59,318 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_fmin_double_#res|)) (= (_ bv1 32) |ULTIMATE.start_isnan_double_#res|) (not (fp.eq ULTIMATE.start_fmin_double_~y ULTIMATE.start_fmin_double_~y))) [2020-10-25 21:53:59,318 INFO L274 CegarLoopResult]: For program point L22-5(lines 22 27) no Hoare annotation was computed. [2020-10-25 21:53:59,319 INFO L270 CegarLoopResult]: At program point L22-6(lines 22 27) the Hoare annotation is: (and (not (fp.eq ULTIMATE.start_fmin_double_~x ULTIMATE.start_fmin_double_~x)) (not (fp.eq ULTIMATE.start_fmin_double_~y ULTIMATE.start_fmin_double_~y))) [2020-10-25 21:53:59,319 INFO L274 CegarLoopResult]: For program point L47(lines 47 48) no Hoare annotation was computed. [2020-10-25 21:53:59,319 INFO L274 CegarLoopResult]: For program point L22-7(lines 19 44) no Hoare annotation was computed. [2020-10-25 21:53:59,320 INFO L270 CegarLoopResult]: At program point L43(lines 19 44) the Hoare annotation is: (and (not (fp.eq ULTIMATE.start_fmin_double_~x ULTIMATE.start_fmin_double_~x)) (not (fp.eq ULTIMATE.start_fmin_double_~y ULTIMATE.start_fmin_double_~y))) [2020-10-25 21:53:59,320 INFO L270 CegarLoopResult]: At program point L43-1(lines 19 44) the Hoare annotation is: (let ((.cse0 (not (fp.eq ULTIMATE.start_fmin_double_~y ULTIMATE.start_fmin_double_~y)))) (or (and (not (= (_ bv0 32) |ULTIMATE.start___fpclassify_double_#res|)) .cse0) (and (not (fp.eq ULTIMATE.start_fmin_double_~x ULTIMATE.start_fmin_double_~x)) .cse0))) [2020-10-25 21:53:59,321 INFO L277 CegarLoopResult]: At program point L72(lines 55 73) the Hoare annotation is: true [2020-10-25 21:53:59,321 INFO L274 CegarLoopResult]: For program point L39(lines 39 43) no Hoare annotation was computed. [2020-10-25 21:53:59,321 INFO L274 CegarLoopResult]: For program point L39-1(lines 39 43) no Hoare annotation was computed. [2020-10-25 21:53:59,321 INFO L274 CegarLoopResult]: For program point L35(lines 35 43) no Hoare annotation was computed. [2020-10-25 21:53:59,321 INFO L274 CegarLoopResult]: For program point L35-1(lines 35 43) no Hoare annotation was computed. [2020-10-25 21:53:59,345 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-10-25 21:53:59,348 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-10-25 21:53:59,349 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-10-25 21:53:59,350 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-10-25 21:53:59,352 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.10 09:53:59 BoogieIcfgContainer [2020-10-25 21:53:59,353 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-25 21:53:59,354 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-25 21:53:59,354 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-25 21:53:59,354 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-25 21:53:59,355 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 09:53:53" (3/4) ... [2020-10-25 21:53:59,359 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-10-25 21:53:59,376 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2020-10-25 21:53:59,376 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2020-10-25 21:53:59,377 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-10-25 21:53:59,377 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-25 21:53:59,414 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == \result) && !~fp.eq~DOUBLE(y, y) [2020-10-25 21:53:59,416 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == \result) && 1bv32 == \result) && !~fp.eq~DOUBLE(y, y) [2020-10-25 21:53:59,417 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (!(0bv32 == \result) && !~fp.eq~DOUBLE(y, y)) || (!~fp.eq~DOUBLE(x, x) && !~fp.eq~DOUBLE(y, y)) [2020-10-25 21:53:59,450 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-25 21:53:59,450 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-25 21:53:59,453 INFO L168 Benchmark]: Toolchain (without parser) took 6854.23 ms. Allocated memory was 50.3 MB in the beginning and 73.4 MB in the end (delta: 23.1 MB). Free memory was 27.6 MB in the beginning and 48.7 MB in the end (delta: -21.1 MB). Peak memory consumption was 4.6 MB. Max. memory is 16.1 GB. [2020-10-25 21:53:59,453 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 50.3 MB. Free memory was 35.6 MB in the beginning and 35.5 MB in the end (delta: 84.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-25 21:53:59,454 INFO L168 Benchmark]: CACSL2BoogieTranslator took 376.61 ms. Allocated memory is still 50.3 MB. Free memory was 27.1 MB in the beginning and 29.4 MB in the end (delta: -2.3 MB). Peak memory consumption was 5.5 MB. Max. memory is 16.1 GB. [2020-10-25 21:53:59,455 INFO L168 Benchmark]: Boogie Procedure Inliner took 54.73 ms. Allocated memory is still 50.3 MB. Free memory was 29.4 MB in the beginning and 27.6 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-25 21:53:59,455 INFO L168 Benchmark]: Boogie Preprocessor took 40.42 ms. Allocated memory is still 50.3 MB. Free memory was 27.6 MB in the beginning and 26.0 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-25 21:53:59,456 INFO L168 Benchmark]: RCFGBuilder took 805.12 ms. Allocated memory was 50.3 MB in the beginning and 60.8 MB in the end (delta: 10.5 MB). Free memory was 26.0 MB in the beginning and 43.9 MB in the end (delta: -17.9 MB). Peak memory consumption was 10.8 MB. Max. memory is 16.1 GB. [2020-10-25 21:53:59,457 INFO L168 Benchmark]: TraceAbstraction took 5463.42 ms. Allocated memory was 60.8 MB in the beginning and 73.4 MB in the end (delta: 12.6 MB). Free memory was 43.4 MB in the beginning and 52.3 MB in the end (delta: -8.9 MB). Peak memory consumption was 30.4 MB. Max. memory is 16.1 GB. [2020-10-25 21:53:59,457 INFO L168 Benchmark]: Witness Printer took 96.21 ms. Allocated memory is still 73.4 MB. Free memory was 52.3 MB in the beginning and 48.7 MB in the end (delta: 3.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-10-25 21:53:59,461 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 50.3 MB. Free memory was 35.6 MB in the beginning and 35.5 MB in the end (delta: 84.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 376.61 ms. Allocated memory is still 50.3 MB. Free memory was 27.1 MB in the beginning and 29.4 MB in the end (delta: -2.3 MB). Peak memory consumption was 5.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 54.73 ms. Allocated memory is still 50.3 MB. Free memory was 29.4 MB in the beginning and 27.6 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 40.42 ms. Allocated memory is still 50.3 MB. Free memory was 27.6 MB in the beginning and 26.0 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 805.12 ms. Allocated memory was 50.3 MB in the beginning and 60.8 MB in the end (delta: 10.5 MB). Free memory was 26.0 MB in the beginning and 43.9 MB in the end (delta: -17.9 MB). Peak memory consumption was 10.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 5463.42 ms. Allocated memory was 60.8 MB in the beginning and 73.4 MB in the end (delta: 12.6 MB). Free memory was 43.4 MB in the beginning and 52.3 MB in the end (delta: -8.9 MB). Peak memory consumption was 30.4 MB. Max. memory is 16.1 GB. * Witness Printer took 96.21 ms. Allocated memory is still 73.4 MB. Free memory was 52.3 MB in the beginning and 48.7 MB in the end (delta: 3.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 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: 19]: Loop Invariant Derived loop invariant: (!(0bv32 == \result) && !~fp.eq~DOUBLE(y, y)) || (!~fp.eq~DOUBLE(x, x) && !~fp.eq~DOUBLE(y, y)) - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: !~fp.eq~DOUBLE(x, x) && !~fp.eq~DOUBLE(y, y) - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: !~fp.eq~DOUBLE(x, x) && !~fp.eq~DOUBLE(y, y) - InvariantResult [Line: 46]: Loop Invariant [2020-10-25 21:53:59,472 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-10-25 21:53:59,473 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()) == \result) && !~fp.eq~DOUBLE(y, y) - InvariantResult [Line: 18]: Loop Invariant [2020-10-25 21:53:59,473 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-10-25 21:53:59,474 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()) == \result) && 1bv32 == \result) && !~fp.eq~DOUBLE(y, y) - InvariantResult [Line: 55]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 22]: 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: 5.1s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 1.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, 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, 1.8s 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, 231 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 4 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 1.0s 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...