./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/float-newlib/double_req_bl_1230.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 88b5e43d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/float-newlib/double_req_bl_1230.c -s /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-2/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-2/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/float-newlib/double_req_bl_1230.c -s /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-2/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 0.2.0-88b5e43 [2020-11-24 00:02:20,677 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-24 00:02:20,680 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-24 00:02:20,734 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-24 00:02:20,735 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-24 00:02:20,742 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-24 00:02:20,749 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-24 00:02:20,754 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-24 00:02:20,758 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-24 00:02:20,766 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-24 00:02:20,769 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-24 00:02:20,772 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-24 00:02:20,772 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-24 00:02:20,773 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-24 00:02:20,776 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-24 00:02:20,778 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-24 00:02:20,779 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-24 00:02:20,783 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-24 00:02:20,790 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-24 00:02:20,793 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-24 00:02:20,800 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-24 00:02:20,802 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-24 00:02:20,805 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-24 00:02:20,807 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-24 00:02:20,811 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-24 00:02:20,813 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-24 00:02:20,814 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-24 00:02:20,816 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-24 00:02:20,817 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-24 00:02:20,818 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-24 00:02:20,819 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-24 00:02:20,820 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-24 00:02:20,822 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-24 00:02:20,823 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-24 00:02:20,824 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-24 00:02:20,825 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-24 00:02:20,826 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-24 00:02:20,826 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-24 00:02:20,826 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-24 00:02:20,829 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-24 00:02:20,830 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-24 00:02:20,831 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-24 00:02:20,891 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-24 00:02:20,891 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-24 00:02:20,896 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-24 00:02:20,896 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-24 00:02:20,896 INFO L138 SettingsManager]: * Use SBE=true [2020-11-24 00:02:20,897 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-24 00:02:20,897 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-24 00:02:20,897 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-24 00:02:20,898 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-24 00:02:20,898 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-24 00:02:20,899 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-24 00:02:20,900 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-24 00:02:20,900 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-24 00:02:20,901 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-24 00:02:20,901 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-24 00:02:20,901 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-24 00:02:20,901 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-24 00:02:20,902 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-24 00:02:20,902 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-24 00:02:20,902 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-24 00:02:20,903 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-24 00:02:20,903 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-24 00:02:20,903 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-24 00:02:20,903 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-24 00:02:20,904 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-24 00:02:20,904 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-24 00:02:20,904 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-24 00:02:20,904 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-24 00:02:20,905 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-24 00:02:20,905 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-2/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 858612fdb9071600e83746a6e504d4acbbe533c1 [2020-11-24 00:02:21,307 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-24 00:02:21,335 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-24 00:02:21,338 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-24 00:02:21,339 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-24 00:02:21,340 INFO L275 PluginConnector]: CDTParser initialized [2020-11-24 00:02:21,342 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1230.c [2020-11-24 00:02:21,440 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/51f13dc91/092e8521837d4d81b9cdec7b7e8df05f/FLAG55aa6de80 [2020-11-24 00:02:22,105 INFO L306 CDTParser]: Found 1 translation units. [2020-11-24 00:02:22,106 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_1230.c [2020-11-24 00:02:22,114 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/51f13dc91/092e8521837d4d81b9cdec7b7e8df05f/FLAG55aa6de80 [2020-11-24 00:02:22,471 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/51f13dc91/092e8521837d4d81b9cdec7b7e8df05f [2020-11-24 00:02:22,474 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-24 00:02:22,482 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-24 00:02:22,484 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-24 00:02:22,485 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-24 00:02:22,490 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-24 00:02:22,491 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 12:02:22" (1/1) ... [2020-11-24 00:02:22,521 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f21fd9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:02:22, skipping insertion in model container [2020-11-24 00:02:22,522 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 12:02:22" (1/1) ... [2020-11-24 00:02:22,545 INFO L146 MainTranslator]: Starting translation in SV-COMP mode [2020-11-24 00:02:22,569 INFO L179 MainTranslator]: Built tables and reachable declarations [2020-11-24 00:02:22,837 INFO L211 PostProcessor]: Analyzing one entry point: main [2020-11-24 00:02:22,848 INFO L212 MainTranslator]: Completed pre-run [2020-11-24 00:02:22,878 INFO L211 PostProcessor]: Analyzing one entry point: main [2020-11-24 00:02:22,898 INFO L217 MainTranslator]: Completed translation [2020-11-24 00:02:22,898 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:02:22 WrapperNode [2020-11-24 00:02:22,899 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-24 00:02:22,900 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-24 00:02:22,901 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-24 00:02:22,901 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-24 00:02:22,911 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:02:22" (1/1) ... [2020-11-24 00:02:22,932 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:02:22" (1/1) ... [2020-11-24 00:02:22,961 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-24 00:02:22,963 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-24 00:02:22,963 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-24 00:02:22,963 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-24 00:02:22,975 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:02:22" (1/1) ... [2020-11-24 00:02:22,976 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:02:22" (1/1) ... [2020-11-24 00:02:22,979 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:02:22" (1/1) ... [2020-11-24 00:02:22,980 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:02:22" (1/1) ... [2020-11-24 00:02:22,989 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:02:22" (1/1) ... [2020-11-24 00:02:22,994 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:02:22" (1/1) ... [2020-11-24 00:02:22,997 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:02:22" (1/1) ... [2020-11-24 00:02:23,000 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-24 00:02:23,002 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-24 00:02:23,002 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-24 00:02:23,002 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-24 00:02:23,004 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:02:22" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/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 [2020-11-24 00:02:23,095 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-24 00:02:23,096 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-24 00:02:23,096 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-11-24 00:02:23,096 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-24 00:02:23,097 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-24 00:02:23,097 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-24 00:02:23,097 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-24 00:02:23,919 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-24 00:02:23,920 INFO L298 CfgBuilder]: Removed 18 assume(true) statements. [2020-11-24 00:02:23,921 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 12:02:23 BoogieIcfgContainer [2020-11-24 00:02:23,922 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-24 00:02:23,924 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-24 00:02:23,924 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-24 00:02:23,928 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-24 00:02:23,928 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 12:02:22" (1/3) ... [2020-11-24 00:02:23,929 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56e26d77 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 12:02:23, skipping insertion in model container [2020-11-24 00:02:23,929 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:02:22" (2/3) ... [2020-11-24 00:02:23,930 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56e26d77 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 12:02:23, skipping insertion in model container [2020-11-24 00:02:23,930 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 12:02:23" (3/3) ... [2020-11-24 00:02:23,932 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1230.c [2020-11-24 00:02:23,944 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-24 00:02:23,950 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-24 00:02:23,965 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-24 00:02:24,000 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-24 00:02:24,000 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-24 00:02:24,001 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-24 00:02:24,001 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-24 00:02:24,001 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-24 00:02:24,001 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-24 00:02:24,002 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-24 00:02:24,002 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-24 00:02:24,019 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states. [2020-11-24 00:02:24,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-24 00:02:24,025 INFO L414 BasicCegarLoop]: Found error trace [2020-11-24 00:02:24,026 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-24 00:02:24,027 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-24 00:02:24,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-24 00:02:24,035 INFO L82 PathProgramCache]: Analyzing trace with hash -958093107, now seen corresponding path program 1 times [2020-11-24 00:02:24,046 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-24 00:02:24,047 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158001410] [2020-11-24 00:02:24,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-24 00:02:24,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-24 00:02:24,213 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-24 00:02:24,214 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [158001410] [2020-11-24 00:02:24,215 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-24 00:02:24,216 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-24 00:02:24,217 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960082078] [2020-11-24 00:02:24,223 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-24 00:02:24,224 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-24 00:02:24,241 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-24 00:02:24,243 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-24 00:02:24,245 INFO L87 Difference]: Start difference. First operand 29 states. Second operand 2 states. [2020-11-24 00:02:24,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-24 00:02:24,268 INFO L93 Difference]: Finished difference Result 55 states and 85 transitions. [2020-11-24 00:02:24,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-24 00:02:24,270 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-11-24 00:02:24,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-24 00:02:24,281 INFO L225 Difference]: With dead ends: 55 [2020-11-24 00:02:24,282 INFO L226 Difference]: Without dead ends: 25 [2020-11-24 00:02:24,286 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 [2020-11-24 00:02:24,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2020-11-24 00:02:24,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2020-11-24 00:02:24,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-11-24 00:02:24,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 35 transitions. [2020-11-24 00:02:24,339 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 35 transitions. Word has length 10 [2020-11-24 00:02:24,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-24 00:02:24,340 INFO L481 AbstractCegarLoop]: Abstraction has 25 states and 35 transitions. [2020-11-24 00:02:24,340 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-24 00:02:24,340 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 35 transitions. [2020-11-24 00:02:24,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-24 00:02:24,341 INFO L414 BasicCegarLoop]: Found error trace [2020-11-24 00:02:24,341 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-24 00:02:24,342 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-24 00:02:24,342 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-24 00:02:24,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-24 00:02:24,343 INFO L82 PathProgramCache]: Analyzing trace with hash 1001566992, now seen corresponding path program 1 times [2020-11-24 00:02:24,344 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-24 00:02:24,344 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [308340540] [2020-11-24 00:02:24,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-24 00:02:24,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-24 00:02:24,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-24 00:02:24,457 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [308340540] [2020-11-24 00:02:24,458 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-24 00:02:24,458 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-24 00:02:24,459 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180469252] [2020-11-24 00:02:24,460 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-24 00:02:24,461 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-24 00:02:24,462 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-24 00:02:24,463 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-24 00:02:24,463 INFO L87 Difference]: Start difference. First operand 25 states and 35 transitions. Second operand 4 states. [2020-11-24 00:02:24,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-24 00:02:24,562 INFO L93 Difference]: Finished difference Result 41 states and 52 transitions. [2020-11-24 00:02:24,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-24 00:02:24,563 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-11-24 00:02:24,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-24 00:02:24,565 INFO L225 Difference]: With dead ends: 41 [2020-11-24 00:02:24,565 INFO L226 Difference]: Without dead ends: 36 [2020-11-24 00:02:24,566 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 [2020-11-24 00:02:24,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-11-24 00:02:24,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 27. [2020-11-24 00:02:24,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-11-24 00:02:24,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 37 transitions. [2020-11-24 00:02:24,574 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 37 transitions. Word has length 11 [2020-11-24 00:02:24,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-24 00:02:24,575 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 37 transitions. [2020-11-24 00:02:24,575 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-24 00:02:24,575 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 37 transitions. [2020-11-24 00:02:24,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-24 00:02:24,576 INFO L414 BasicCegarLoop]: Found error trace [2020-11-24 00:02:24,576 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-24 00:02:24,577 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-24 00:02:24,577 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-24 00:02:24,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-24 00:02:24,578 INFO L82 PathProgramCache]: Analyzing trace with hash 502183504, now seen corresponding path program 1 times [2020-11-24 00:02:24,578 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-24 00:02:24,579 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2105357432] [2020-11-24 00:02:24,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-24 00:02:24,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-24 00:02:24,656 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-24 00:02:24,656 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2105357432] [2020-11-24 00:02:24,657 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-24 00:02:24,657 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-24 00:02:24,657 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796730180] [2020-11-24 00:02:24,658 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-24 00:02:24,658 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-24 00:02:24,659 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-24 00:02:24,660 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-24 00:02:24,660 INFO L87 Difference]: Start difference. First operand 27 states and 37 transitions. Second operand 4 states. [2020-11-24 00:02:24,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-24 00:02:24,733 INFO L93 Difference]: Finished difference Result 43 states and 54 transitions. [2020-11-24 00:02:24,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-24 00:02:24,734 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-11-24 00:02:24,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-24 00:02:24,735 INFO L225 Difference]: With dead ends: 43 [2020-11-24 00:02:24,735 INFO L226 Difference]: Without dead ends: 38 [2020-11-24 00:02:24,736 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 [2020-11-24 00:02:24,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-11-24 00:02:24,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 27. [2020-11-24 00:02:24,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-11-24 00:02:24,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 37 transitions. [2020-11-24 00:02:24,743 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 37 transitions. Word has length 12 [2020-11-24 00:02:24,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-24 00:02:24,743 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 37 transitions. [2020-11-24 00:02:24,744 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-24 00:02:24,744 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 37 transitions. [2020-11-24 00:02:24,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-24 00:02:24,745 INFO L414 BasicCegarLoop]: Found error trace [2020-11-24 00:02:24,745 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-24 00:02:24,746 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-24 00:02:24,746 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-24 00:02:24,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-24 00:02:24,747 INFO L82 PathProgramCache]: Analyzing trace with hash -1951251627, now seen corresponding path program 1 times [2020-11-24 00:02:24,747 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-24 00:02:24,748 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [756803084] [2020-11-24 00:02:24,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-24 00:02:24,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-24 00:02:24,814 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-24 00:02:24,815 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [756803084] [2020-11-24 00:02:24,815 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-24 00:02:24,815 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-24 00:02:24,815 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737316810] [2020-11-24 00:02:24,816 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-24 00:02:24,816 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-24 00:02:24,816 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-24 00:02:24,817 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-24 00:02:24,817 INFO L87 Difference]: Start difference. First operand 27 states and 37 transitions. Second operand 4 states. [2020-11-24 00:02:24,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-24 00:02:24,869 INFO L93 Difference]: Finished difference Result 45 states and 56 transitions. [2020-11-24 00:02:24,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-24 00:02:24,877 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-11-24 00:02:24,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-24 00:02:24,878 INFO L225 Difference]: With dead ends: 45 [2020-11-24 00:02:24,878 INFO L226 Difference]: Without dead ends: 40 [2020-11-24 00:02:24,879 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 [2020-11-24 00:02:24,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-11-24 00:02:24,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 27. [2020-11-24 00:02:24,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-11-24 00:02:24,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 37 transitions. [2020-11-24 00:02:24,885 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 37 transitions. Word has length 13 [2020-11-24 00:02:24,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-24 00:02:24,885 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 37 transitions. [2020-11-24 00:02:24,886 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-24 00:02:24,886 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 37 transitions. [2020-11-24 00:02:24,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-24 00:02:24,887 INFO L414 BasicCegarLoop]: Found error trace [2020-11-24 00:02:24,887 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-24 00:02:24,887 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-24 00:02:24,887 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-24 00:02:24,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-24 00:02:24,888 INFO L82 PathProgramCache]: Analyzing trace with hash -555778251, now seen corresponding path program 1 times [2020-11-24 00:02:24,889 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-24 00:02:24,889 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [202201946] [2020-11-24 00:02:24,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-24 00:02:24,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-24 00:02:24,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-24 00:02:24,969 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [202201946] [2020-11-24 00:02:24,969 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-24 00:02:24,969 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-24 00:02:24,969 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754731482] [2020-11-24 00:02:24,970 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-24 00:02:24,970 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-24 00:02:24,971 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-24 00:02:24,972 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-24 00:02:24,972 INFO L87 Difference]: Start difference. First operand 27 states and 37 transitions. Second operand 4 states. [2020-11-24 00:02:25,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-24 00:02:25,032 INFO L93 Difference]: Finished difference Result 43 states and 54 transitions. [2020-11-24 00:02:25,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-24 00:02:25,033 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-11-24 00:02:25,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-24 00:02:25,034 INFO L225 Difference]: With dead ends: 43 [2020-11-24 00:02:25,034 INFO L226 Difference]: Without dead ends: 38 [2020-11-24 00:02:25,035 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 [2020-11-24 00:02:25,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-11-24 00:02:25,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 27. [2020-11-24 00:02:25,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-11-24 00:02:25,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 37 transitions. [2020-11-24 00:02:25,041 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 37 transitions. Word has length 14 [2020-11-24 00:02:25,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-24 00:02:25,042 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 37 transitions. [2020-11-24 00:02:25,042 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-24 00:02:25,042 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 37 transitions. [2020-11-24 00:02:25,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-24 00:02:25,043 INFO L414 BasicCegarLoop]: Found error trace [2020-11-24 00:02:25,043 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-24 00:02:25,043 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-24 00:02:25,044 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-24 00:02:25,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-24 00:02:25,044 INFO L82 PathProgramCache]: Analyzing trace with hash 1219229111, now seen corresponding path program 1 times [2020-11-24 00:02:25,045 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-24 00:02:25,045 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127670644] [2020-11-24 00:02:25,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-24 00:02:25,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-24 00:02:25,080 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-24 00:02:25,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-24 00:02:25,127 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-24 00:02:25,187 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-24 00:02:25,191 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-24 00:02:25,191 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-24 00:02:25,226 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.11 12:02:25 BoogieIcfgContainer [2020-11-24 00:02:25,226 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-24 00:02:25,227 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-24 00:02:25,227 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-24 00:02:25,228 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-24 00:02:25,228 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 12:02:23" (3/4) ... [2020-11-24 00:02:25,233 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-24 00:02:25,233 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-24 00:02:25,236 INFO L168 Benchmark]: Toolchain (without parser) took 2758.01 ms. Allocated memory was 37.7 MB in the beginning and 56.6 MB in the end (delta: 18.9 MB). Free memory was 15.0 MB in the beginning and 20.7 MB in the end (delta: -5.7 MB). Peak memory consumption was 14.5 MB. Max. memory is 16.1 GB. [2020-11-24 00:02:25,237 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 37.7 MB. Free memory was 22.3 MB in the beginning and 22.3 MB in the end (delta: 70.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-24 00:02:25,238 INFO L168 Benchmark]: CACSL2BoogieTranslator took 415.21 ms. Allocated memory is still 37.7 MB. Free memory was 14.3 MB in the beginning and 13.3 MB in the end (delta: 958.9 kB). Peak memory consumption was 3.3 MB. Max. memory is 16.1 GB. [2020-11-24 00:02:25,239 INFO L168 Benchmark]: Boogie Procedure Inliner took 61.30 ms. Allocated memory was 37.7 MB in the beginning and 46.1 MB in the end (delta: 8.4 MB). Free memory was 13.2 MB in the beginning and 29.8 MB in the end (delta: -16.6 MB). Peak memory consumption was 4.7 MB. Max. memory is 16.1 GB. [2020-11-24 00:02:25,240 INFO L168 Benchmark]: Boogie Preprocessor took 38.05 ms. Allocated memory is still 46.1 MB. Free memory was 29.8 MB in the beginning and 28.4 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-24 00:02:25,241 INFO L168 Benchmark]: RCFGBuilder took 920.44 ms. Allocated memory is still 46.1 MB. Free memory was 28.4 MB in the beginning and 20.8 MB in the end (delta: 7.6 MB). Peak memory consumption was 11.7 MB. Max. memory is 16.1 GB. [2020-11-24 00:02:25,243 INFO L168 Benchmark]: TraceAbstraction took 1302.81 ms. Allocated memory was 46.1 MB in the beginning and 56.6 MB in the end (delta: 10.5 MB). Free memory was 20.4 MB in the beginning and 21.1 MB in the end (delta: -680.5 kB). Peak memory consumption was 9.5 MB. Max. memory is 16.1 GB. [2020-11-24 00:02:25,244 INFO L168 Benchmark]: Witness Printer took 6.00 ms. Allocated memory is still 56.6 MB. Free memory was 21.1 MB in the beginning and 20.7 MB in the end (delta: 400.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-24 00:02:25,250 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 37.7 MB. Free memory was 22.3 MB in the beginning and 22.3 MB in the end (delta: 70.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 415.21 ms. Allocated memory is still 37.7 MB. Free memory was 14.3 MB in the beginning and 13.3 MB in the end (delta: 958.9 kB). Peak memory consumption was 3.3 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 61.30 ms. Allocated memory was 37.7 MB in the beginning and 46.1 MB in the end (delta: 8.4 MB). Free memory was 13.2 MB in the beginning and 29.8 MB in the end (delta: -16.6 MB). Peak memory consumption was 4.7 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 38.05 ms. Allocated memory is still 46.1 MB. Free memory was 29.8 MB in the beginning and 28.4 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 920.44 ms. Allocated memory is still 46.1 MB. Free memory was 28.4 MB in the beginning and 20.8 MB in the end (delta: 7.6 MB). Peak memory consumption was 11.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1302.81 ms. Allocated memory was 46.1 MB in the beginning and 56.6 MB in the end (delta: 10.5 MB). Free memory was 20.4 MB in the beginning and 21.1 MB in the end (delta: -680.5 kB). Peak memory consumption was 9.5 MB. Max. memory is 16.1 GB. * Witness Printer took 6.00 ms. Allocated memory is still 56.6 MB. Free memory was 21.1 MB in the beginning and 20.7 MB in the end (delta: 400.6 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 someBinaryArithmeticDOUBLE_SMToperation at line 63, overapproximation of someBinaryDOUBLE_SMTComparisonOperation at line 18. 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: 1.2s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 206 SDtfs, 44 SDslu, 238 SDs, 0 SdLazy, 84 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 22 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=29occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 44 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 74 NumberOfCodeBlocks, 74 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 55 ConstructedInterpolants, 0 QuantifiedInterpolants, 799 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.0-88b5e43 [2020-11-24 00:02:27,959 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-24 00:02:27,962 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-24 00:02:28,002 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-24 00:02:28,003 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-24 00:02:28,005 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-24 00:02:28,007 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-24 00:02:28,009 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-24 00:02:28,012 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-24 00:02:28,014 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-24 00:02:28,015 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-24 00:02:28,017 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-24 00:02:28,017 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-24 00:02:28,019 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-24 00:02:28,020 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-24 00:02:28,023 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-24 00:02:28,025 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-24 00:02:28,030 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-24 00:02:28,034 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-24 00:02:28,042 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-24 00:02:28,045 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-24 00:02:28,050 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-24 00:02:28,056 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-24 00:02:28,057 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-24 00:02:28,065 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-24 00:02:28,066 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-24 00:02:28,068 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-24 00:02:28,071 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-24 00:02:28,072 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-24 00:02:28,073 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-24 00:02:28,075 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-24 00:02:28,076 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-24 00:02:28,078 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-24 00:02:28,081 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-24 00:02:28,093 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-24 00:02:28,093 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-24 00:02:28,095 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-24 00:02:28,095 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-24 00:02:28,095 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-24 00:02:28,098 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-24 00:02:28,101 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-24 00:02:28,103 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-11-24 00:02:28,159 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-24 00:02:28,159 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-24 00:02:28,163 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-24 00:02:28,164 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-24 00:02:28,164 INFO L138 SettingsManager]: * Use SBE=true [2020-11-24 00:02:28,164 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-24 00:02:28,164 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-24 00:02:28,165 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-24 00:02:28,165 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-24 00:02:28,165 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-24 00:02:28,167 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-24 00:02:28,167 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-24 00:02:28,167 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-11-24 00:02:28,168 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-11-24 00:02:28,168 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-24 00:02:28,168 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-24 00:02:28,168 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-24 00:02:28,169 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-24 00:02:28,169 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-24 00:02:28,169 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-24 00:02:28,169 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-24 00:02:28,170 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-24 00:02:28,170 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-24 00:02:28,170 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-24 00:02:28,171 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-24 00:02:28,171 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-24 00:02:28,171 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-11-24 00:02:28,171 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-11-24 00:02:28,172 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-24 00:02:28,172 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-24 00:02:28,172 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-24 00:02:28,172 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-2/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 858612fdb9071600e83746a6e504d4acbbe533c1 [2020-11-24 00:02:28,623 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-24 00:02:28,653 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-24 00:02:28,656 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-24 00:02:28,658 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-24 00:02:28,659 INFO L275 PluginConnector]: CDTParser initialized [2020-11-24 00:02:28,660 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1230.c [2020-11-24 00:02:28,739 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9b2ef3b9e/fca27a15485047938204163ba12f09ba/FLAGb024c1285 [2020-11-24 00:02:29,427 INFO L306 CDTParser]: Found 1 translation units. [2020-11-24 00:02:29,428 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_1230.c [2020-11-24 00:02:29,436 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9b2ef3b9e/fca27a15485047938204163ba12f09ba/FLAGb024c1285 [2020-11-24 00:02:29,789 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9b2ef3b9e/fca27a15485047938204163ba12f09ba [2020-11-24 00:02:29,793 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-24 00:02:29,800 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-24 00:02:29,802 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-24 00:02:29,802 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-24 00:02:29,807 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-24 00:02:29,808 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 12:02:29" (1/1) ... [2020-11-24 00:02:29,812 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63bdb6c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:02:29, skipping insertion in model container [2020-11-24 00:02:29,813 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 12:02:29" (1/1) ... [2020-11-24 00:02:29,822 INFO L146 MainTranslator]: Starting translation in SV-COMP mode [2020-11-24 00:02:29,840 INFO L179 MainTranslator]: Built tables and reachable declarations [2020-11-24 00:02:30,058 INFO L211 PostProcessor]: Analyzing one entry point: main [2020-11-24 00:02:30,077 INFO L212 MainTranslator]: Completed pre-run [2020-11-24 00:02:30,110 INFO L211 PostProcessor]: Analyzing one entry point: main [2020-11-24 00:02:30,135 INFO L217 MainTranslator]: Completed translation [2020-11-24 00:02:30,136 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:02:30 WrapperNode [2020-11-24 00:02:30,136 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-24 00:02:30,138 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-24 00:02:30,138 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-24 00:02:30,138 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-24 00:02:30,147 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:02:30" (1/1) ... [2020-11-24 00:02:30,160 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:02:30" (1/1) ... [2020-11-24 00:02:30,189 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-24 00:02:30,191 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-24 00:02:30,191 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-24 00:02:30,191 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-24 00:02:30,201 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:02:30" (1/1) ... [2020-11-24 00:02:30,201 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:02:30" (1/1) ... [2020-11-24 00:02:30,206 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:02:30" (1/1) ... [2020-11-24 00:02:30,206 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:02:30" (1/1) ... [2020-11-24 00:02:30,217 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:02:30" (1/1) ... [2020-11-24 00:02:30,223 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:02:30" (1/1) ... [2020-11-24 00:02:30,234 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:02:30" (1/1) ... [2020-11-24 00:02:30,239 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-24 00:02:30,240 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-24 00:02:30,241 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-24 00:02:30,241 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-24 00:02:30,242 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:02:30" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/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 [2020-11-24 00:02:30,316 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.float_to_bitvec_DOUBLE [2020-11-24 00:02:30,317 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2020-11-24 00:02:30,317 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-11-24 00:02:30,317 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-24 00:02:30,317 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-11-24 00:02:30,318 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-24 00:02:30,318 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-24 00:02:30,318 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-24 00:02:30,762 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-24 00:02:30,762 INFO L298 CfgBuilder]: Removed 18 assume(true) statements. [2020-11-24 00:02:30,765 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 12:02:30 BoogieIcfgContainer [2020-11-24 00:02:30,765 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-24 00:02:30,768 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-24 00:02:30,768 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-24 00:02:30,773 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-24 00:02:30,774 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 12:02:29" (1/3) ... [2020-11-24 00:02:30,775 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41aacd28 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 12:02:30, skipping insertion in model container [2020-11-24 00:02:30,775 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:02:30" (2/3) ... [2020-11-24 00:02:30,776 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41aacd28 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 12:02:30, skipping insertion in model container [2020-11-24 00:02:30,776 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 12:02:30" (3/3) ... [2020-11-24 00:02:30,778 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1230.c [2020-11-24 00:02:30,794 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-24 00:02:30,800 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-24 00:02:30,845 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-24 00:02:30,896 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-24 00:02:30,897 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-24 00:02:30,897 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-24 00:02:30,897 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-24 00:02:30,897 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-24 00:02:30,898 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-24 00:02:30,898 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-24 00:02:30,898 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-24 00:02:30,924 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states. [2020-11-24 00:02:30,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-24 00:02:30,932 INFO L414 BasicCegarLoop]: Found error trace [2020-11-24 00:02:30,935 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-24 00:02:30,935 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-24 00:02:30,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-24 00:02:30,945 INFO L82 PathProgramCache]: Analyzing trace with hash -958093107, now seen corresponding path program 1 times [2020-11-24 00:02:30,968 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-24 00:02:30,969 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [378223991] [2020-11-24 00:02:30,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/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 [2020-11-24 00:02:31,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-24 00:02:31,137 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 1 conjunts are in the unsatisfiable core [2020-11-24 00:02:31,143 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-24 00:02:31,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-24 00:02:31,163 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-24 00:02:31,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-24 00:02:31,169 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [378223991] [2020-11-24 00:02:31,170 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-24 00:02:31,171 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-11-24 00:02:31,172 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393766479] [2020-11-24 00:02:31,177 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-24 00:02:31,178 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-24 00:02:31,193 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-24 00:02:31,194 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-24 00:02:31,197 INFO L87 Difference]: Start difference. First operand 29 states. Second operand 2 states. [2020-11-24 00:02:31,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-24 00:02:31,219 INFO L93 Difference]: Finished difference Result 55 states and 85 transitions. [2020-11-24 00:02:31,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-24 00:02:31,221 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-11-24 00:02:31,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-24 00:02:31,232 INFO L225 Difference]: With dead ends: 55 [2020-11-24 00:02:31,233 INFO L226 Difference]: Without dead ends: 25 [2020-11-24 00:02:31,236 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 [2020-11-24 00:02:31,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2020-11-24 00:02:31,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2020-11-24 00:02:31,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-11-24 00:02:31,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 35 transitions. [2020-11-24 00:02:31,278 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 35 transitions. Word has length 10 [2020-11-24 00:02:31,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-24 00:02:31,278 INFO L481 AbstractCegarLoop]: Abstraction has 25 states and 35 transitions. [2020-11-24 00:02:31,278 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-24 00:02:31,279 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 35 transitions. [2020-11-24 00:02:31,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-24 00:02:31,280 INFO L414 BasicCegarLoop]: Found error trace [2020-11-24 00:02:31,280 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-24 00:02:31,494 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-11-24 00:02:31,495 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-24 00:02:31,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-24 00:02:31,496 INFO L82 PathProgramCache]: Analyzing trace with hash 1001566992, now seen corresponding path program 1 times [2020-11-24 00:02:31,497 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-24 00:02:31,497 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [634091542] [2020-11-24 00:02:31,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/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 [2020-11-24 00:02:31,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-24 00:02:31,686 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-24 00:02:31,687 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-24 00:02:31,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-24 00:02:31,732 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-24 00:02:31,764 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-24 00:02:31,764 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [634091542] [2020-11-24 00:02:31,764 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-24 00:02:31,764 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2020-11-24 00:02:31,765 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346422895] [2020-11-24 00:02:31,767 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-24 00:02:31,767 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-24 00:02:31,768 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-24 00:02:31,769 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-24 00:02:31,769 INFO L87 Difference]: Start difference. First operand 25 states and 35 transitions. Second operand 6 states. [2020-11-24 00:02:31,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-24 00:02:31,926 INFO L93 Difference]: Finished difference Result 52 states and 65 transitions. [2020-11-24 00:02:31,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-24 00:02:31,928 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2020-11-24 00:02:31,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-24 00:02:31,929 INFO L225 Difference]: With dead ends: 52 [2020-11-24 00:02:31,929 INFO L226 Difference]: Without dead ends: 47 [2020-11-24 00:02:31,931 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-11-24 00:02:31,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-11-24 00:02:31,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 27. [2020-11-24 00:02:31,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-11-24 00:02:31,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 37 transitions. [2020-11-24 00:02:31,939 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 37 transitions. Word has length 11 [2020-11-24 00:02:31,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-24 00:02:31,940 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 37 transitions. [2020-11-24 00:02:31,940 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-24 00:02:31,940 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 37 transitions. [2020-11-24 00:02:31,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-24 00:02:31,941 INFO L414 BasicCegarLoop]: Found error trace [2020-11-24 00:02:31,941 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-24 00:02:32,157 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-11-24 00:02:32,158 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-24 00:02:32,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-24 00:02:32,159 INFO L82 PathProgramCache]: Analyzing trace with hash 1219229111, now seen corresponding path program 1 times [2020-11-24 00:02:32,160 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-24 00:02:32,160 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [727434364] [2020-11-24 00:02:32,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/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 [2020-11-24 00:02:32,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-24 00:02:32,315 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 10 conjunts are in the unsatisfiable core [2020-11-24 00:02:32,317 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-24 00:02:32,415 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-24 00:02:32,521 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-24 00:02:32,524 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-24 00:02:32,670 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-24 00:02:32,670 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [727434364] [2020-11-24 00:02:32,670 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-24 00:02:32,671 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2020-11-24 00:02:32,671 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948168775] [2020-11-24 00:02:32,671 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-24 00:02:32,671 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-24 00:02:32,673 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-24 00:02:32,673 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-11-24 00:02:32,673 INFO L87 Difference]: Start difference. First operand 27 states and 37 transitions. Second operand 10 states. [2020-11-24 00:02:33,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-24 00:02:33,127 INFO L93 Difference]: Finished difference Result 36 states and 45 transitions. [2020-11-24 00:02:33,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-24 00:02:33,128 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 14 [2020-11-24 00:02:33,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-24 00:02:33,129 INFO L225 Difference]: With dead ends: 36 [2020-11-24 00:02:33,130 INFO L226 Difference]: Without dead ends: 27 [2020-11-24 00:02:33,130 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2020-11-24 00:02:33,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-11-24 00:02:33,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 25. [2020-11-24 00:02:33,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-11-24 00:02:33,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 33 transitions. [2020-11-24 00:02:33,142 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 33 transitions. Word has length 14 [2020-11-24 00:02:33,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-24 00:02:33,144 INFO L481 AbstractCegarLoop]: Abstraction has 25 states and 33 transitions. [2020-11-24 00:02:33,144 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-24 00:02:33,144 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 33 transitions. [2020-11-24 00:02:33,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-24 00:02:33,146 INFO L414 BasicCegarLoop]: Found error trace [2020-11-24 00:02:33,146 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-24 00:02:33,347 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-11-24 00:02:33,347 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-24 00:02:33,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-24 00:02:33,349 INFO L82 PathProgramCache]: Analyzing trace with hash 1012428811, now seen corresponding path program 1 times [2020-11-24 00:02:33,350 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-24 00:02:33,351 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1199139162] [2020-11-24 00:02:33,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/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 [2020-11-24 00:02:33,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-24 00:02:33,534 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-24 00:02:33,537 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-24 00:02:33,551 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-24 00:02:33,551 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-24 00:02:33,585 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-24 00:02:33,585 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1199139162] [2020-11-24 00:02:33,585 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-24 00:02:33,586 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2020-11-24 00:02:33,586 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667330215] [2020-11-24 00:02:33,586 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-24 00:02:33,586 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-24 00:02:33,588 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-24 00:02:33,588 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-24 00:02:33,588 INFO L87 Difference]: Start difference. First operand 25 states and 33 transitions. Second operand 6 states. [2020-11-24 00:02:33,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-24 00:02:33,674 INFO L93 Difference]: Finished difference Result 52 states and 59 transitions. [2020-11-24 00:02:33,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-24 00:02:33,675 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2020-11-24 00:02:33,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-24 00:02:33,676 INFO L225 Difference]: With dead ends: 52 [2020-11-24 00:02:33,676 INFO L226 Difference]: Without dead ends: 47 [2020-11-24 00:02:33,677 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 [2020-11-24 00:02:33,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-11-24 00:02:33,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 27. [2020-11-24 00:02:33,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-11-24 00:02:33,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 35 transitions. [2020-11-24 00:02:33,684 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 35 transitions. Word has length 16 [2020-11-24 00:02:33,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-24 00:02:33,684 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 35 transitions. [2020-11-24 00:02:33,684 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-24 00:02:33,685 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 35 transitions. [2020-11-24 00:02:33,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-24 00:02:33,686 INFO L414 BasicCegarLoop]: Found error trace [2020-11-24 00:02:33,686 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-24 00:02:33,900 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-11-24 00:02:33,900 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-24 00:02:33,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-24 00:02:33,902 INFO L82 PathProgramCache]: Analyzing trace with hash -356841937, now seen corresponding path program 1 times [2020-11-24 00:02:33,903 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-24 00:02:33,903 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [889781228] [2020-11-24 00:02:33,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/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 [2020-11-24 00:02:34,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-24 00:02:34,027 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-24 00:02:34,030 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-24 00:02:34,179 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-24 00:02:34,179 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-24 00:02:34,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-24 00:02:34,308 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [889781228] [2020-11-24 00:02:34,308 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-24 00:02:34,308 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2020-11-24 00:02:34,309 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379020022] [2020-11-24 00:02:34,309 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-24 00:02:34,309 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-24 00:02:34,311 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-24 00:02:34,311 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-11-24 00:02:34,311 INFO L87 Difference]: Start difference. First operand 27 states and 35 transitions. Second operand 8 states. [2020-11-24 00:02:34,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-24 00:02:34,712 INFO L93 Difference]: Finished difference Result 46 states and 58 transitions. [2020-11-24 00:02:34,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-24 00:02:34,714 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 18 [2020-11-24 00:02:34,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-24 00:02:34,715 INFO L225 Difference]: With dead ends: 46 [2020-11-24 00:02:34,715 INFO L226 Difference]: Without dead ends: 27 [2020-11-24 00:02:34,715 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-11-24 00:02:34,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-11-24 00:02:34,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2020-11-24 00:02:34,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-11-24 00:02:34,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 29 transitions. [2020-11-24 00:02:34,723 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 29 transitions. Word has length 18 [2020-11-24 00:02:34,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-24 00:02:34,724 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 29 transitions. [2020-11-24 00:02:34,724 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-24 00:02:34,724 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 29 transitions. [2020-11-24 00:02:34,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-11-24 00:02:34,725 INFO L414 BasicCegarLoop]: Found error trace [2020-11-24 00:02:34,725 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-24 00:02:34,932 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2020-11-24 00:02:34,933 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-24 00:02:34,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-24 00:02:34,934 INFO L82 PathProgramCache]: Analyzing trace with hash -1592179256, now seen corresponding path program 1 times [2020-11-24 00:02:34,935 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-24 00:02:34,935 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1204427830] [2020-11-24 00:02:34,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/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 [2020-11-24 00:02:35,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-24 00:02:35,062 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 14 conjunts are in the unsatisfiable core [2020-11-24 00:02:35,065 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-24 00:02:35,748 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-24 00:02:35,750 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-24 00:02:35,760 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-24 00:02:35,839 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-24 00:02:35,840 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-24 00:02:36,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-24 00:02:36,135 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1204427830] [2020-11-24 00:02:36,136 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-24 00:02:36,136 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 14 [2020-11-24 00:02:36,136 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136452116] [2020-11-24 00:02:36,136 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-11-24 00:02:36,137 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-24 00:02:36,137 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-11-24 00:02:36,138 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2020-11-24 00:02:36,138 INFO L87 Difference]: Start difference. First operand 27 states and 29 transitions. Second operand 14 states. [2020-11-24 00:02:36,860 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 36 [2020-11-24 00:02:37,234 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 39 [2020-11-24 00:02:37,629 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 41 [2020-11-24 00:02:37,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-24 00:02:37,722 INFO L93 Difference]: Finished difference Result 54 states and 56 transitions. [2020-11-24 00:02:37,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-11-24 00:02:37,722 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 22 [2020-11-24 00:02:37,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-24 00:02:37,723 INFO L225 Difference]: With dead ends: 54 [2020-11-24 00:02:37,723 INFO L226 Difference]: Without dead ends: 46 [2020-11-24 00:02:37,725 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 21 SyntacticMatches, 9 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=121, Invalid=341, Unknown=0, NotChecked=0, Total=462 [2020-11-24 00:02:37,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-11-24 00:02:37,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 25. [2020-11-24 00:02:37,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-11-24 00:02:37,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 26 transitions. [2020-11-24 00:02:37,739 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 26 transitions. Word has length 22 [2020-11-24 00:02:37,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-24 00:02:37,740 INFO L481 AbstractCegarLoop]: Abstraction has 25 states and 26 transitions. [2020-11-24 00:02:37,740 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-11-24 00:02:37,740 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 26 transitions. [2020-11-24 00:02:37,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-11-24 00:02:37,741 INFO L414 BasicCegarLoop]: Found error trace [2020-11-24 00:02:37,741 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-24 00:02:37,955 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 mathsat -unsat_core_generation=3 [2020-11-24 00:02:37,956 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-24 00:02:37,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-24 00:02:37,957 INFO L82 PathProgramCache]: Analyzing trace with hash -99319126, now seen corresponding path program 1 times [2020-11-24 00:02:37,960 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-24 00:02:37,961 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [527767680] [2020-11-24 00:02:37,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 8 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with mathsat -unsat_core_generation=3 [2020-11-24 00:02:38,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-24 00:02:38,104 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 15 conjunts are in the unsatisfiable core [2020-11-24 00:02:38,106 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-24 00:02:38,419 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-24 00:02:38,612 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-24 00:02:38,709 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-24 00:02:38,709 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-24 00:02:39,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-24 00:02:39,600 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [527767680] [2020-11-24 00:02:39,600 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-24 00:02:39,600 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10, 10] imperfect sequences [] total 18 [2020-11-24 00:02:39,601 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610752689] [2020-11-24 00:02:39,601 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-11-24 00:02:39,602 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-24 00:02:39,602 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-11-24 00:02:39,603 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306 [2020-11-24 00:02:39,603 INFO L87 Difference]: Start difference. First operand 25 states and 26 transitions. Second operand 18 states. [2020-11-24 00:02:40,129 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 21 [2020-11-24 00:02:40,456 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 33 [2020-11-24 00:02:40,677 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 28 [2020-11-24 00:02:40,917 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 32 [2020-11-24 00:02:41,350 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 35 [2020-11-24 00:02:41,531 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 32 [2020-11-24 00:02:41,771 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 37 [2020-11-24 00:02:41,926 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 34 [2020-11-24 00:02:41,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-24 00:02:41,928 INFO L93 Difference]: Finished difference Result 32 states and 33 transitions. [2020-11-24 00:02:41,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-11-24 00:02:41,928 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 24 [2020-11-24 00:02:41,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-24 00:02:41,929 INFO L225 Difference]: With dead ends: 32 [2020-11-24 00:02:41,929 INFO L226 Difference]: Without dead ends: 0 [2020-11-24 00:02:41,930 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 24 SyntacticMatches, 7 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 3 DeprecatedPredicates, 180 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=211, Invalid=545, Unknown=0, NotChecked=0, Total=756 [2020-11-24 00:02:41,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-24 00:02:41,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-24 00:02:41,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-24 00:02:41,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-24 00:02:41,931 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 24 [2020-11-24 00:02:41,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-24 00:02:41,931 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-24 00:02:41,931 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-11-24 00:02:41,931 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-24 00:02:41,932 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-24 00:02:42,132 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 mathsat -unsat_core_generation=3 [2020-11-24 00:02:42,136 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-24 00:02:42,277 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 63 [2020-11-24 00:02:42,909 WARN L193 SmtUtils]: Spent 491.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 24 [2020-11-24 00:02:43,084 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 20 [2020-11-24 00:02:43,256 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 23 [2020-11-24 00:02:43,663 WARN L193 SmtUtils]: Spent 405.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 18 [2020-11-24 00:02:44,240 WARN L193 SmtUtils]: Spent 575.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 21 [2020-11-24 00:02:44,388 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 20 [2020-11-24 00:02:44,391 INFO L274 CegarLoopResult]: For program point L52(line 52) no Hoare annotation was computed. [2020-11-24 00:02:44,392 INFO L274 CegarLoopResult]: For program point L52-2(line 52) no Hoare annotation was computed. [2020-11-24 00:02:44,392 INFO L270 CegarLoopResult]: At program point L52-3(lines 46 53) the Hoare annotation is: (and (not (let ((.cse0 (fp ((_ extract 63 63) |ULTIMATE.start_fmin_double_#res|) ((_ extract 62 52) |ULTIMATE.start_fmin_double_#res|) ((_ extract 51 0) |ULTIMATE.start_fmin_double_#res|)))) (fp.eq .cse0 .cse0))) (exists ((~CRM RoundingMode)) (= (fp ((_ extract 63 63) ULTIMATE.start_fmin_double_~y) ((_ extract 62 52) ULTIMATE.start_fmin_double_~y) ((_ extract 51 0) ULTIMATE.start_fmin_double_~y)) (fp.div ~CRM (_ +zero 11 53) (_ +zero 11 53))))) [2020-11-24 00:02:44,392 INFO L274 CegarLoopResult]: For program point L3(line 3) no Hoare annotation was computed. [2020-11-24 00:02:44,393 INFO L274 CegarLoopResult]: For program point L3-1(line 3) no Hoare annotation was computed. [2020-11-24 00:02:44,398 INFO L274 CegarLoopResult]: For program point L32(lines 32 43) no Hoare annotation was computed. [2020-11-24 00:02:44,399 INFO L274 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-11-24 00:02:44,399 INFO L274 CegarLoopResult]: For program point L32-1(lines 32 43) no Hoare annotation was computed. [2020-11-24 00:02:44,400 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-24 00:02:44,400 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-11-24 00:02:44,400 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-11-24 00:02:44,401 INFO L274 CegarLoopResult]: For program point L49(lines 49 50) no Hoare annotation was computed. [2020-11-24 00:02:44,401 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-24 00:02:44,402 INFO L274 CegarLoopResult]: For program point L67(lines 67 70) no Hoare annotation was computed. [2020-11-24 00:02:44,402 INFO L274 CegarLoopResult]: For program point L22-1(lines 22 27) no Hoare annotation was computed. [2020-11-24 00:02:44,402 INFO L270 CegarLoopResult]: At program point L22-2(lines 22 27) the Hoare annotation is: (and (= ULTIMATE.start___fpclassify_double_~x ULTIMATE.start_fmin_double_~x) (exists ((~CRM RoundingMode)) (= (fp ((_ extract 63 63) ULTIMATE.start_fmin_double_~y) ((_ extract 62 52) ULTIMATE.start_fmin_double_~y) ((_ extract 51 0) ULTIMATE.start_fmin_double_~y)) (fp.div ~CRM (_ +zero 11 53) (_ +zero 11 53)))) (exists ((~CRM RoundingMode)) (= (fp ((_ extract 63 63) ULTIMATE.start___fpclassify_double_~x) ((_ extract 62 52) ULTIMATE.start___fpclassify_double_~x) ((_ extract 51 0) ULTIMATE.start___fpclassify_double_~x)) (fp.div ~CRM (_ +zero 11 53) (_ +zero 11 53))))) [2020-11-24 00:02:44,402 INFO L274 CegarLoopResult]: For program point L22-3(lines 19 44) no Hoare annotation was computed. [2020-11-24 00:02:44,402 INFO L270 CegarLoopResult]: At program point L18(line 18) the Hoare annotation is: (and (not (let ((.cse0 (fp ((_ extract 63 63) |ULTIMATE.start_fmin_double_#res|) ((_ extract 62 52) |ULTIMATE.start_fmin_double_#res|) ((_ extract 51 0) |ULTIMATE.start_fmin_double_#res|)))) (fp.eq .cse0 .cse0))) (exists ((~CRM RoundingMode)) (= (fp ((_ extract 63 63) ULTIMATE.start_fmin_double_~y) ((_ extract 62 52) ULTIMATE.start_fmin_double_~y) ((_ extract 51 0) ULTIMATE.start_fmin_double_~y)) (fp.div ~CRM (_ +zero 11 53) (_ +zero 11 53)))) (= (_ bv1 32) |ULTIMATE.start_isnan_double_#res|)) [2020-11-24 00:02:44,403 INFO L274 CegarLoopResult]: For program point L22-5(lines 22 27) no Hoare annotation was computed. [2020-11-24 00:02:44,403 INFO L270 CegarLoopResult]: At program point L22-6(lines 22 27) the Hoare annotation is: (and (= ULTIMATE.start___fpclassify_double_~x ULTIMATE.start_fmin_double_~y) (not (let ((.cse0 (fp ((_ extract 63 63) ULTIMATE.start_fmin_double_~x) ((_ extract 62 52) ULTIMATE.start_fmin_double_~x) ((_ extract 51 0) ULTIMATE.start_fmin_double_~x)))) (fp.eq .cse0 .cse0))) (exists ((~CRM RoundingMode)) (= (fp ((_ extract 63 63) ULTIMATE.start_fmin_double_~y) ((_ extract 62 52) ULTIMATE.start_fmin_double_~y) ((_ extract 51 0) ULTIMATE.start_fmin_double_~y)) (fp.div ~CRM (_ +zero 11 53) (_ +zero 11 53))))) [2020-11-24 00:02:44,403 INFO L274 CegarLoopResult]: For program point L47(lines 47 48) no Hoare annotation was computed. [2020-11-24 00:02:44,403 INFO L274 CegarLoopResult]: For program point L22-7(lines 19 44) no Hoare annotation was computed. [2020-11-24 00:02:44,404 INFO L270 CegarLoopResult]: At program point L43(lines 19 44) the Hoare annotation is: (and (= ULTIMATE.start___fpclassify_double_~x ULTIMATE.start_fmin_double_~x) (= ULTIMATE.start___fpclassify_double_~msw~0 ((_ extract 63 32) ULTIMATE.start_fmin_double_~x)) (exists ((~CRM RoundingMode)) (= (fp ((_ extract 63 63) ULTIMATE.start_fmin_double_~y) ((_ extract 62 52) ULTIMATE.start_fmin_double_~y) ((_ extract 51 0) ULTIMATE.start_fmin_double_~y)) (fp.div ~CRM (_ +zero 11 53) (_ +zero 11 53)))) (exists ((~CRM RoundingMode)) (= (fp ((_ extract 63 63) ULTIMATE.start___fpclassify_double_~x) ((_ extract 62 52) ULTIMATE.start___fpclassify_double_~x) ((_ extract 51 0) ULTIMATE.start___fpclassify_double_~x)) (fp.div ~CRM (_ +zero 11 53) (_ +zero 11 53))))) [2020-11-24 00:02:44,404 INFO L270 CegarLoopResult]: At program point L43-1(lines 19 44) the Hoare annotation is: (and (= ULTIMATE.start___fpclassify_double_~x ULTIMATE.start_fmin_double_~y) (= ULTIMATE.start___fpclassify_double_~msw~0 ((_ extract 63 32) ULTIMATE.start_fmin_double_~y)) (not (let ((.cse0 (fp ((_ extract 63 63) ULTIMATE.start_fmin_double_~x) ((_ extract 62 52) ULTIMATE.start_fmin_double_~x) ((_ extract 51 0) ULTIMATE.start_fmin_double_~x)))) (fp.eq .cse0 .cse0))) (exists ((~CRM RoundingMode)) (= (fp ((_ extract 63 63) ULTIMATE.start___fpclassify_double_~x) ((_ extract 62 52) ULTIMATE.start___fpclassify_double_~x) ((_ extract 51 0) ULTIMATE.start___fpclassify_double_~x)) (fp.div ~CRM (_ +zero 11 53) (_ +zero 11 53))))) [2020-11-24 00:02:44,404 INFO L277 CegarLoopResult]: At program point L72(lines 55 73) the Hoare annotation is: true [2020-11-24 00:02:44,404 INFO L274 CegarLoopResult]: For program point L39(lines 39 43) no Hoare annotation was computed. [2020-11-24 00:02:44,404 INFO L274 CegarLoopResult]: For program point L39-1(lines 39 43) no Hoare annotation was computed. [2020-11-24 00:02:44,404 INFO L274 CegarLoopResult]: For program point L35(lines 35 43) no Hoare annotation was computed. [2020-11-24 00:02:44,404 INFO L274 CegarLoopResult]: For program point L35-1(lines 35 43) no Hoare annotation was computed. [2020-11-24 00:02:44,412 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[~CRM,QUANTIFIED] [2020-11-24 00:02:44,422 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[~CRM,QUANTIFIED] [2020-11-24 00:02:44,426 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[~CRM,QUANTIFIED] [2020-11-24 00:02:44,427 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[~CRM,QUANTIFIED] [2020-11-24 00:02:44,431 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[~CRM,QUANTIFIED] [2020-11-24 00:02:44,432 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[~CRM,QUANTIFIED] [2020-11-24 00:02:44,433 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[~CRM,QUANTIFIED] [2020-11-24 00:02:44,434 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[~CRM,QUANTIFIED] [2020-11-24 00:02:44,438 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[~CRM,QUANTIFIED] [2020-11-24 00:02:44,442 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[~CRM,QUANTIFIED] [2020-11-24 00:02:44,448 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[~CRM,QUANTIFIED] [2020-11-24 00:02:44,449 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[~CRM,QUANTIFIED] [2020-11-24 00:02:44,452 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[~CRM,QUANTIFIED] [2020-11-24 00:02:44,452 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[~CRM,QUANTIFIED] [2020-11-24 00:02:44,453 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[~CRM,QUANTIFIED] [2020-11-24 00:02:44,454 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[~CRM,QUANTIFIED] [2020-11-24 00:02:44,458 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.11 12:02:44 BoogieIcfgContainer [2020-11-24 00:02:44,458 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-24 00:02:44,459 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-24 00:02:44,462 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-24 00:02:44,462 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-24 00:02:44,463 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 12:02:30" (3/4) ... [2020-11-24 00:02:44,467 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-24 00:02:44,480 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2020-11-24 00:02:44,483 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2020-11-24 00:02:44,485 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-11-24 00:02:44,485 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-24 00:02:44,510 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (x == x && (\exists ~CRM : FloatRoundingMode :: ~fp~LONGDOUBLE(y[63:63], y[62:52], y[51:0]) == ~fp.div~DOUBLE(~CRM, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()))) && (\exists ~CRM : FloatRoundingMode :: ~fp~LONGDOUBLE(x[63:63], x[62:52], x[51:0]) == ~fp.div~DOUBLE(~CRM, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE())) [2020-11-24 00:02:44,511 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((x == x && msw == x[63:32]) && (\exists ~CRM : FloatRoundingMode :: ~fp~LONGDOUBLE(y[63:63], y[62:52], y[51:0]) == ~fp.div~DOUBLE(~CRM, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()))) && (\exists ~CRM : FloatRoundingMode :: ~fp~LONGDOUBLE(x[63:63], x[62:52], x[51:0]) == ~fp.div~DOUBLE(~CRM, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE())) [2020-11-24 00:02:44,512 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: !~fp.eq~DOUBLE(~fp~LONGDOUBLE(\result[63:63], \result[62:52], \result[51:0]), ~fp~LONGDOUBLE(\result[63:63], \result[62:52], \result[51:0])) && (\exists ~CRM : FloatRoundingMode :: ~fp~LONGDOUBLE(y[63:63], y[62:52], y[51:0]) == ~fp.div~DOUBLE(~CRM, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE())) [2020-11-24 00:02:44,512 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (x == y && !~fp.eq~DOUBLE(~fp~LONGDOUBLE(x[63:63], x[62:52], x[51:0]), ~fp~LONGDOUBLE(x[63:63], x[62:52], x[51:0]))) && (\exists ~CRM : FloatRoundingMode :: ~fp~LONGDOUBLE(y[63:63], y[62:52], y[51:0]) == ~fp.div~DOUBLE(~CRM, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE())) [2020-11-24 00:02:44,512 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (!~fp.eq~DOUBLE(~fp~LONGDOUBLE(\result[63:63], \result[62:52], \result[51:0]), ~fp~LONGDOUBLE(\result[63:63], \result[62:52], \result[51:0])) && (\exists ~CRM : FloatRoundingMode :: ~fp~LONGDOUBLE(y[63:63], y[62:52], y[51:0]) == ~fp.div~DOUBLE(~CRM, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()))) && 1bv32 == \result [2020-11-24 00:02:44,513 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((x == y && msw == y[63:32]) && !~fp.eq~DOUBLE(~fp~LONGDOUBLE(x[63:63], x[62:52], x[51:0]), ~fp~LONGDOUBLE(x[63:63], x[62:52], x[51:0]))) && (\exists ~CRM : FloatRoundingMode :: ~fp~LONGDOUBLE(x[63:63], x[62:52], x[51:0]) == ~fp.div~DOUBLE(~CRM, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE())) [2020-11-24 00:02:44,562 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-11-24 00:02:44,563 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-24 00:02:44,564 INFO L168 Benchmark]: Toolchain (without parser) took 14769.48 ms. Allocated memory was 46.1 MB in the beginning and 69.2 MB in the end (delta: 23.1 MB). Free memory was 22.9 MB in the beginning and 26.3 MB in the end (delta: -3.4 MB). Peak memory consumption was 21.2 MB. Max. memory is 16.1 GB. [2020-11-24 00:02:44,565 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 37.7 MB. Free memory was 21.2 MB in the beginning and 21.1 MB in the end (delta: 44.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-24 00:02:44,565 INFO L168 Benchmark]: CACSL2BoogieTranslator took 334.62 ms. Allocated memory is still 46.1 MB. Free memory was 22.3 MB in the beginning and 22.2 MB in the end (delta: 97.8 kB). Peak memory consumption was 3.3 MB. Max. memory is 16.1 GB. [2020-11-24 00:02:44,566 INFO L168 Benchmark]: Boogie Procedure Inliner took 52.32 ms. Allocated memory is still 46.1 MB. Free memory was 22.2 MB in the beginning and 20.3 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-24 00:02:44,566 INFO L168 Benchmark]: Boogie Preprocessor took 48.69 ms. Allocated memory is still 46.1 MB. Free memory was 20.3 MB in the beginning and 30.1 MB in the end (delta: -9.8 MB). Peak memory consumption was 5.3 MB. Max. memory is 16.1 GB. [2020-11-24 00:02:44,567 INFO L168 Benchmark]: RCFGBuilder took 525.31 ms. Allocated memory is still 46.1 MB. Free memory was 30.1 MB in the beginning and 22.8 MB in the end (delta: 7.3 MB). Peak memory consumption was 13.3 MB. Max. memory is 16.1 GB. [2020-11-24 00:02:44,567 INFO L168 Benchmark]: TraceAbstraction took 13690.98 ms. Allocated memory was 46.1 MB in the beginning and 69.2 MB in the end (delta: 23.1 MB). Free memory was 22.4 MB in the beginning and 29.9 MB in the end (delta: -7.5 MB). Peak memory consumption was 24.4 MB. Max. memory is 16.1 GB. [2020-11-24 00:02:44,568 INFO L168 Benchmark]: Witness Printer took 103.47 ms. Allocated memory is still 69.2 MB. Free memory was 29.9 MB in the beginning and 26.3 MB in the end (delta: 3.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-24 00:02:44,570 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 37.7 MB. Free memory was 21.2 MB in the beginning and 21.1 MB in the end (delta: 44.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 334.62 ms. Allocated memory is still 46.1 MB. Free memory was 22.3 MB in the beginning and 22.2 MB in the end (delta: 97.8 kB). Peak memory consumption was 3.3 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 52.32 ms. Allocated memory is still 46.1 MB. Free memory was 22.2 MB in the beginning and 20.3 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 48.69 ms. Allocated memory is still 46.1 MB. Free memory was 20.3 MB in the beginning and 30.1 MB in the end (delta: -9.8 MB). Peak memory consumption was 5.3 MB. Max. memory is 16.1 GB. * RCFGBuilder took 525.31 ms. Allocated memory is still 46.1 MB. Free memory was 30.1 MB in the beginning and 22.8 MB in the end (delta: 7.3 MB). Peak memory consumption was 13.3 MB. Max. memory is 16.1 GB. * TraceAbstraction took 13690.98 ms. Allocated memory was 46.1 MB in the beginning and 69.2 MB in the end (delta: 23.1 MB). Free memory was 22.4 MB in the beginning and 29.9 MB in the end (delta: -7.5 MB). Peak memory consumption was 24.4 MB. Max. memory is 16.1 GB. * Witness Printer took 103.47 ms. Allocated memory is still 69.2 MB. Free memory was 29.9 MB in the beginning and 26.3 MB in the end (delta: 3.6 MB). Peak memory consumption was 2.1 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[~CRM,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[~CRM,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[~CRM,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[~CRM,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[~CRM,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[~CRM,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[~CRM,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[~CRM,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[~CRM,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[~CRM,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[~CRM,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[~CRM,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[~CRM,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[~CRM,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[~CRM,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[~CRM,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 [2020-11-24 00:02:44,580 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[~CRM,QUANTIFIED] [2020-11-24 00:02:44,581 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[~CRM,QUANTIFIED] Derived loop invariant: ((x == y && msw == y[63:32]) && !~fp.eq~DOUBLE(~fp~LONGDOUBLE(x[63:63], x[62:52], x[51:0]), ~fp~LONGDOUBLE(x[63:63], x[62:52], x[51:0]))) && (\exists ~CRM : FloatRoundingMode :: ~fp~LONGDOUBLE(x[63:63], x[62:52], x[51:0]) == ~fp.div~DOUBLE(~CRM, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE())) - InvariantResult [Line: 22]: Loop Invariant [2020-11-24 00:02:44,581 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[~CRM,QUANTIFIED] [2020-11-24 00:02:44,582 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[~CRM,QUANTIFIED] Derived loop invariant: (x == y && !~fp.eq~DOUBLE(~fp~LONGDOUBLE(x[63:63], x[62:52], x[51:0]), ~fp~LONGDOUBLE(x[63:63], x[62:52], x[51:0]))) && (\exists ~CRM : FloatRoundingMode :: ~fp~LONGDOUBLE(y[63:63], y[62:52], y[51:0]) == ~fp.div~DOUBLE(~CRM, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE())) - InvariantResult [Line: 19]: Loop Invariant [2020-11-24 00:02:44,583 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[~CRM,QUANTIFIED] [2020-11-24 00:02:44,583 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[~CRM,QUANTIFIED] [2020-11-24 00:02:44,583 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[~CRM,QUANTIFIED] [2020-11-24 00:02:44,583 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[~CRM,QUANTIFIED] Derived loop invariant: ((x == x && msw == x[63:32]) && (\exists ~CRM : FloatRoundingMode :: ~fp~LONGDOUBLE(y[63:63], y[62:52], y[51:0]) == ~fp.div~DOUBLE(~CRM, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()))) && (\exists ~CRM : FloatRoundingMode :: ~fp~LONGDOUBLE(x[63:63], x[62:52], x[51:0]) == ~fp.div~DOUBLE(~CRM, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE())) - InvariantResult [Line: 46]: Loop Invariant [2020-11-24 00:02:44,584 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[~CRM,QUANTIFIED] [2020-11-24 00:02:44,585 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[~CRM,QUANTIFIED] Derived loop invariant: !~fp.eq~DOUBLE(~fp~LONGDOUBLE(\result[63:63], \result[62:52], \result[51:0]), ~fp~LONGDOUBLE(\result[63:63], \result[62:52], \result[51:0])) && (\exists ~CRM : FloatRoundingMode :: ~fp~LONGDOUBLE(y[63:63], y[62:52], y[51:0]) == ~fp.div~DOUBLE(~CRM, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE())) - InvariantResult [Line: 18]: Loop Invariant [2020-11-24 00:02:44,585 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[~CRM,QUANTIFIED] [2020-11-24 00:02:44,586 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[~CRM,QUANTIFIED] Derived loop invariant: (!~fp.eq~DOUBLE(~fp~LONGDOUBLE(\result[63:63], \result[62:52], \result[51:0]), ~fp~LONGDOUBLE(\result[63:63], \result[62:52], \result[51:0])) && (\exists ~CRM : FloatRoundingMode :: ~fp~LONGDOUBLE(y[63:63], y[62:52], y[51:0]) == ~fp.div~DOUBLE(~CRM, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()))) && 1bv32 == \result - InvariantResult [Line: 55]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 22]: Loop Invariant [2020-11-24 00:02:44,587 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[~CRM,QUANTIFIED] [2020-11-24 00:02:44,587 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[~CRM,QUANTIFIED] [2020-11-24 00:02:44,587 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[~CRM,QUANTIFIED] [2020-11-24 00:02:44,587 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[~CRM,QUANTIFIED] Derived loop invariant: (x == x && (\exists ~CRM : FloatRoundingMode :: ~fp~LONGDOUBLE(y[63:63], y[62:52], y[51:0]) == ~fp.div~DOUBLE(~CRM, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()))) && (\exists ~CRM : FloatRoundingMode :: ~fp~LONGDOUBLE(x[63:63], x[62:52], x[51:0]) == ~fp.div~DOUBLE(~CRM, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE())) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 29 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 11.2s, OverallIterations: 7, TraceHistogramMax: 1, AutomataDifference: 5.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 2.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 176 SDtfs, 369 SDslu, 495 SDs, 0 SdLazy, 273 SolverSat, 43 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 245 GetRequests, 151 SyntacticMatches, 17 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 5 DeprecatedPredicates, 228 ImplicationChecksByTransitivity, 6.5s 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, 7 MinimizatonAttempts, 63 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 7 PreInvPairs, 23 NumberOfFragments, 198 HoareAnnotationTreeSize, 7 FomulaSimplifications, 1437 FormulaSimplificationTreeSizeReduction, 0.2s HoareSimplificationTime, 7 FomulaSimplificationsInter, 1894 FormulaSimplificationTreeSizeReductionInter, 1.9s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 3.4s InterpolantComputationTime, 115 NumberOfCodeBlocks, 115 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 216 ConstructedInterpolants, 71 QuantifiedInterpolants, 66125 SizeOfPredicates, 52 NumberOfNonLiveVariables, 445 ConjunctsInSsa, 53 ConjunctsInUnsatCore, 14 InterpolantComputations, 14 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...