./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/float-newlib/double_req_bl_1252b.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version ee8e70e7 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 ../sv-benchmarks/c/float-newlib/double_req_bl_1252b.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 a6231fe9945ed231781bef28be0893007c672b08 ....................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-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 ../sv-benchmarks/c/float-newlib/double_req_bl_1252b.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 a6231fe9945ed231781bef28be0893007c672b08 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.0-ee8e70e [2020-10-24 15:06:12,831 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-24 15:06:12,834 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-24 15:06:12,868 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-24 15:06:12,869 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-24 15:06:12,870 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-24 15:06:12,872 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-24 15:06:12,874 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-24 15:06:12,877 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-24 15:06:12,878 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-24 15:06:12,886 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-24 15:06:12,888 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-24 15:06:12,888 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-24 15:06:12,890 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-24 15:06:12,891 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-24 15:06:12,893 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-24 15:06:12,894 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-24 15:06:12,895 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-24 15:06:12,897 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-24 15:06:12,899 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-24 15:06:12,901 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-24 15:06:12,911 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-24 15:06:12,912 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-24 15:06:12,913 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-24 15:06:12,918 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-24 15:06:12,919 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-24 15:06:12,919 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-24 15:06:12,920 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-24 15:06:12,924 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-24 15:06:12,927 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-24 15:06:12,928 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-24 15:06:12,928 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-24 15:06:12,933 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-24 15:06:12,934 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-24 15:06:12,935 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-24 15:06:12,936 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-24 15:06:12,937 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-24 15:06:12,937 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-24 15:06:12,937 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-24 15:06:12,938 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-24 15:06:12,941 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-24 15:06:12,945 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-24 15:06:13,013 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-24 15:06:13,019 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-24 15:06:13,023 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-24 15:06:13,023 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-24 15:06:13,023 INFO L138 SettingsManager]: * Use SBE=true [2020-10-24 15:06:13,024 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-24 15:06:13,025 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-24 15:06:13,025 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-24 15:06:13,026 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-24 15:06:13,026 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-24 15:06:13,029 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-24 15:06:13,029 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-24 15:06:13,030 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-24 15:06:13,030 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-24 15:06:13,030 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-24 15:06:13,031 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-24 15:06:13,031 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-24 15:06:13,041 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-24 15:06:13,042 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-24 15:06:13,042 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-24 15:06:13,043 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-24 15:06:13,043 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-24 15:06:13,044 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-24 15:06:13,046 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-24 15:06:13,047 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-24 15:06:13,047 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-24 15:06:13,047 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-24 15:06:13,047 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-24 15:06:13,048 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-24 15:06:13,048 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a6231fe9945ed231781bef28be0893007c672b08 [2020-10-24 15:06:13,511 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-24 15:06:13,536 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-24 15:06:13,539 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-24 15:06:13,541 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-24 15:06:13,541 INFO L275 PluginConnector]: CDTParser initialized [2020-10-24 15:06:13,542 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/double_req_bl_1252b.c [2020-10-24 15:06:13,626 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a96c330a6/01639cf148a7439ea7efe5a29062d059/FLAG78b436502 [2020-10-24 15:06:14,220 INFO L306 CDTParser]: Found 1 translation units. [2020-10-24 15:06:14,221 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_1252b.c [2020-10-24 15:06:14,231 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a96c330a6/01639cf148a7439ea7efe5a29062d059/FLAG78b436502 [2020-10-24 15:06:14,541 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a96c330a6/01639cf148a7439ea7efe5a29062d059 [2020-10-24 15:06:14,544 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-24 15:06:14,559 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-24 15:06:14,566 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-24 15:06:14,566 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-24 15:06:14,572 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-24 15:06:14,573 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 03:06:14" (1/1) ... [2020-10-24 15:06:14,578 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@114f508d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:06:14, skipping insertion in model container [2020-10-24 15:06:14,578 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 03:06:14" (1/1) ... [2020-10-24 15:06:14,587 INFO L146 MainTranslator]: Starting translation in SV-COMP mode [2020-10-24 15:06:14,608 INFO L179 MainTranslator]: Built tables and reachable declarations [2020-10-24 15:06:14,806 INFO L211 PostProcessor]: Analyzing one entry point: main [2020-10-24 15:06:14,818 INFO L212 MainTranslator]: Completed pre-run [2020-10-24 15:06:14,850 INFO L211 PostProcessor]: Analyzing one entry point: main [2020-10-24 15:06:14,874 INFO L217 MainTranslator]: Completed translation [2020-10-24 15:06:14,875 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:06:14 WrapperNode [2020-10-24 15:06:14,875 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-24 15:06:14,879 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-24 15:06:14,880 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-24 15:06:14,880 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-24 15:06:14,891 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:06:14" (1/1) ... [2020-10-24 15:06:14,902 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:06:14" (1/1) ... [2020-10-24 15:06:14,932 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-24 15:06:14,933 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-24 15:06:14,933 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-24 15:06:14,934 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-24 15:06:14,945 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:06:14" (1/1) ... [2020-10-24 15:06:14,945 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:06:14" (1/1) ... [2020-10-24 15:06:14,949 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:06:14" (1/1) ... [2020-10-24 15:06:14,949 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:06:14" (1/1) ... [2020-10-24 15:06:14,957 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:06:14" (1/1) ... [2020-10-24 15:06:14,986 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:06:14" (1/1) ... [2020-10-24 15:06:14,990 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:06:14" (1/1) ... [2020-10-24 15:06:14,997 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-24 15:06:15,000 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-24 15:06:15,000 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-24 15:06:15,000 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-24 15:06:15,004 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:06:14" (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 [2020-10-24 15:06:15,123 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-24 15:06:15,123 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-24 15:06:15,123 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-24 15:06:15,123 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-24 15:06:15,124 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-24 15:06:15,124 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-24 15:06:15,124 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-24 15:06:15,901 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-24 15:06:15,902 INFO L298 CfgBuilder]: Removed 20 assume(true) statements. [2020-10-24 15:06:15,904 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 03:06:15 BoogieIcfgContainer [2020-10-24 15:06:15,904 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-24 15:06:15,913 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-24 15:06:15,914 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-24 15:06:15,918 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-24 15:06:15,918 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 03:06:14" (1/3) ... [2020-10-24 15:06:15,919 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1585c279 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 03:06:15, skipping insertion in model container [2020-10-24 15:06:15,919 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:06:14" (2/3) ... [2020-10-24 15:06:15,920 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1585c279 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 03:06:15, skipping insertion in model container [2020-10-24 15:06:15,920 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 03:06:15" (3/3) ... [2020-10-24 15:06:15,922 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1252b.c [2020-10-24 15:06:15,934 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-24 15:06:15,938 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-24 15:06:15,951 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-24 15:06:15,982 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-24 15:06:15,982 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-24 15:06:15,982 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-24 15:06:15,982 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-24 15:06:15,982 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-24 15:06:15,983 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-24 15:06:15,983 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-24 15:06:15,983 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-24 15:06:16,000 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2020-10-24 15:06:16,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-24 15:06:16,006 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 15:06:16,007 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 15:06:16,008 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 15:06:16,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 15:06:16,015 INFO L82 PathProgramCache]: Analyzing trace with hash -958075201, now seen corresponding path program 1 times [2020-10-24 15:06:16,026 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-24 15:06:16,026 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1203477082] [2020-10-24 15:06:16,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 15:06:16,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 15:06:16,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 15:06:16,179 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1203477082] [2020-10-24 15:06:16,180 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-24 15:06:16,181 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-24 15:06:16,182 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877832240] [2020-10-24 15:06:16,187 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-24 15:06:16,187 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-24 15:06:16,203 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-24 15:06:16,204 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-24 15:06:16,206 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 2 states. [2020-10-24 15:06:16,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 15:06:16,227 INFO L93 Difference]: Finished difference Result 63 states and 99 transitions. [2020-10-24 15:06:16,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-24 15:06:16,229 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-10-24 15:06:16,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 15:06:16,240 INFO L225 Difference]: With dead ends: 63 [2020-10-24 15:06:16,240 INFO L226 Difference]: Without dead ends: 29 [2020-10-24 15:06:16,244 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-24 15:06:16,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-10-24 15:06:16,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-10-24 15:06:16,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-24 15:06:16,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 40 transitions. [2020-10-24 15:06:16,286 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 40 transitions. Word has length 10 [2020-10-24 15:06:16,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 15:06:16,287 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 40 transitions. [2020-10-24 15:06:16,287 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-24 15:06:16,287 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 40 transitions. [2020-10-24 15:06:16,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-24 15:06:16,288 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 15:06:16,288 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 15:06:16,289 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-24 15:06:16,289 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 15:06:16,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 15:06:16,290 INFO L82 PathProgramCache]: Analyzing trace with hash 1001584898, now seen corresponding path program 1 times [2020-10-24 15:06:16,290 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-24 15:06:16,291 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1429478884] [2020-10-24 15:06:16,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 15:06:16,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 15:06:16,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 15:06:16,437 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1429478884] [2020-10-24 15:06:16,437 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-24 15:06:16,438 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-24 15:06:16,438 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849069313] [2020-10-24 15:06:16,439 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-24 15:06:16,440 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-24 15:06:16,441 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-24 15:06:16,441 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-24 15:06:16,442 INFO L87 Difference]: Start difference. First operand 29 states and 40 transitions. Second operand 4 states. [2020-10-24 15:06:16,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 15:06:16,535 INFO L93 Difference]: Finished difference Result 53 states and 67 transitions. [2020-10-24 15:06:16,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-24 15:06:16,537 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-10-24 15:06:16,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 15:06:16,538 INFO L225 Difference]: With dead ends: 53 [2020-10-24 15:06:16,538 INFO L226 Difference]: Without dead ends: 44 [2020-10-24 15:06:16,539 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-24 15:06:16,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-10-24 15:06:16,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 31. [2020-10-24 15:06:16,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-10-24 15:06:16,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 42 transitions. [2020-10-24 15:06:16,547 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 42 transitions. Word has length 11 [2020-10-24 15:06:16,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 15:06:16,547 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 42 transitions. [2020-10-24 15:06:16,548 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-24 15:06:16,548 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 42 transitions. [2020-10-24 15:06:16,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-24 15:06:16,549 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 15:06:16,549 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 15:06:16,549 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-24 15:06:16,550 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 15:06:16,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 15:06:16,551 INFO L82 PathProgramCache]: Analyzing trace with hash 502201410, now seen corresponding path program 1 times [2020-10-24 15:06:16,551 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-24 15:06:16,551 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2040246138] [2020-10-24 15:06:16,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 15:06:16,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 15:06:16,630 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 15:06:16,630 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2040246138] [2020-10-24 15:06:16,630 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-24 15:06:16,631 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-24 15:06:16,631 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261872436] [2020-10-24 15:06:16,631 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-24 15:06:16,631 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-24 15:06:16,632 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-24 15:06:16,633 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-24 15:06:16,633 INFO L87 Difference]: Start difference. First operand 31 states and 42 transitions. Second operand 4 states. [2020-10-24 15:06:16,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 15:06:16,724 INFO L93 Difference]: Finished difference Result 55 states and 69 transitions. [2020-10-24 15:06:16,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-24 15:06:16,725 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-10-24 15:06:16,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 15:06:16,726 INFO L225 Difference]: With dead ends: 55 [2020-10-24 15:06:16,726 INFO L226 Difference]: Without dead ends: 46 [2020-10-24 15:06:16,727 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-24 15:06:16,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-10-24 15:06:16,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 31. [2020-10-24 15:06:16,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-10-24 15:06:16,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 42 transitions. [2020-10-24 15:06:16,734 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 42 transitions. Word has length 12 [2020-10-24 15:06:16,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 15:06:16,735 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 42 transitions. [2020-10-24 15:06:16,735 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-24 15:06:16,735 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 42 transitions. [2020-10-24 15:06:16,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-24 15:06:16,736 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 15:06:16,736 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 15:06:16,737 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-24 15:06:16,737 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 15:06:16,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 15:06:16,738 INFO L82 PathProgramCache]: Analyzing trace with hash -1951233721, now seen corresponding path program 1 times [2020-10-24 15:06:16,738 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-24 15:06:16,739 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1625877761] [2020-10-24 15:06:16,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 15:06:16,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 15:06:16,799 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 15:06:16,800 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1625877761] [2020-10-24 15:06:16,800 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-24 15:06:16,800 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-24 15:06:16,801 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884189783] [2020-10-24 15:06:16,801 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-24 15:06:16,801 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-24 15:06:16,802 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-24 15:06:16,803 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-24 15:06:16,803 INFO L87 Difference]: Start difference. First operand 31 states and 42 transitions. Second operand 4 states. [2020-10-24 15:06:16,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 15:06:16,921 INFO L93 Difference]: Finished difference Result 57 states and 71 transitions. [2020-10-24 15:06:16,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-24 15:06:16,922 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-10-24 15:06:16,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 15:06:16,923 INFO L225 Difference]: With dead ends: 57 [2020-10-24 15:06:16,923 INFO L226 Difference]: Without dead ends: 48 [2020-10-24 15:06:16,924 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-24 15:06:16,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-10-24 15:06:16,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 31. [2020-10-24 15:06:16,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-10-24 15:06:16,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 42 transitions. [2020-10-24 15:06:16,934 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 42 transitions. Word has length 13 [2020-10-24 15:06:16,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 15:06:16,934 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 42 transitions. [2020-10-24 15:06:16,934 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-24 15:06:16,935 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 42 transitions. [2020-10-24 15:06:16,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-24 15:06:16,935 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 15:06:16,936 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 15:06:16,936 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-24 15:06:16,936 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 15:06:16,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 15:06:16,937 INFO L82 PathProgramCache]: Analyzing trace with hash -555760345, now seen corresponding path program 1 times [2020-10-24 15:06:16,938 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-24 15:06:16,938 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1966610002] [2020-10-24 15:06:16,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 15:06:16,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 15:06:17,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 15:06:17,004 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1966610002] [2020-10-24 15:06:17,004 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-24 15:06:17,004 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-24 15:06:17,005 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491229226] [2020-10-24 15:06:17,005 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-24 15:06:17,005 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-24 15:06:17,006 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-24 15:06:17,007 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-24 15:06:17,007 INFO L87 Difference]: Start difference. First operand 31 states and 42 transitions. Second operand 4 states. [2020-10-24 15:06:17,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 15:06:17,104 INFO L93 Difference]: Finished difference Result 55 states and 69 transitions. [2020-10-24 15:06:17,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-24 15:06:17,105 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-10-24 15:06:17,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 15:06:17,107 INFO L225 Difference]: With dead ends: 55 [2020-10-24 15:06:17,107 INFO L226 Difference]: Without dead ends: 46 [2020-10-24 15:06:17,108 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-24 15:06:17,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-10-24 15:06:17,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 31. [2020-10-24 15:06:17,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-10-24 15:06:17,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 42 transitions. [2020-10-24 15:06:17,115 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 42 transitions. Word has length 14 [2020-10-24 15:06:17,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 15:06:17,116 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 42 transitions. [2020-10-24 15:06:17,116 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-24 15:06:17,116 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 42 transitions. [2020-10-24 15:06:17,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-24 15:06:17,117 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 15:06:17,117 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 15:06:17,117 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-24 15:06:17,118 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 15:06:17,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 15:06:17,119 INFO L82 PathProgramCache]: Analyzing trace with hash 1219247017, now seen corresponding path program 1 times [2020-10-24 15:06:17,119 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-24 15:06:17,119 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [991008039] [2020-10-24 15:06:17,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 15:06:17,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-24 15:06:17,166 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-24 15:06:17,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-24 15:06:17,222 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-24 15:06:17,258 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-24 15:06:17,258 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-24 15:06:17,259 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-24 15:06:17,293 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 03:06:17 BoogieIcfgContainer [2020-10-24 15:06:17,294 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-24 15:06:17,294 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-24 15:06:17,295 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-24 15:06:17,295 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-24 15:06:17,296 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 03:06:15" (3/4) ... [2020-10-24 15:06:17,299 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-24 15:06:17,300 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-24 15:06:17,303 INFO L168 Benchmark]: Toolchain (without parser) took 2755.48 ms. Allocated memory was 35.7 MB in the beginning and 54.5 MB in the end (delta: 18.9 MB). Free memory was 14.5 MB in the beginning and 35.0 MB in the end (delta: -20.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-24 15:06:17,304 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 35.7 MB. Free memory is still 21.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-10-24 15:06:17,305 INFO L168 Benchmark]: CACSL2BoogieTranslator took 309.73 ms. Allocated memory is still 44.0 MB. Free memory was 29.7 MB in the beginning and 29.2 MB in the end (delta: 457.6 kB). Peak memory consumption was 11.0 MB. Max. memory is 16.1 GB. [2020-10-24 15:06:17,306 INFO L168 Benchmark]: Boogie Procedure Inliner took 52.99 ms. Allocated memory is still 44.0 MB. Free memory was 29.2 MB in the beginning and 27.4 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-24 15:06:17,307 INFO L168 Benchmark]: Boogie Preprocessor took 63.70 ms. Allocated memory is still 44.0 MB. Free memory was 27.4 MB in the beginning and 29.2 MB in the end (delta: -1.8 MB). Peak memory consumption was 2.4 MB. Max. memory is 16.1 GB. [2020-10-24 15:06:17,308 INFO L168 Benchmark]: RCFGBuilder took 904.01 ms. Allocated memory is still 44.0 MB. Free memory was 29.1 MB in the beginning and 18.5 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-10-24 15:06:17,308 INFO L168 Benchmark]: TraceAbstraction took 1380.42 ms. Allocated memory is still 54.5 MB. Free memory was 38.6 MB in the beginning and 35.3 MB in the end (delta: 3.3 MB). Peak memory consumption was 18.1 MB. Max. memory is 16.1 GB. [2020-10-24 15:06:17,309 INFO L168 Benchmark]: Witness Printer took 5.58 ms. Allocated memory is still 54.5 MB. Free memory is still 35.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-10-24 15:06:17,314 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 35.7 MB. Free memory is still 21.5 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 309.73 ms. Allocated memory is still 44.0 MB. Free memory was 29.7 MB in the beginning and 29.2 MB in the end (delta: 457.6 kB). Peak memory consumption was 11.0 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 52.99 ms. Allocated memory is still 44.0 MB. Free memory was 29.2 MB in the beginning and 27.4 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 63.70 ms. Allocated memory is still 44.0 MB. Free memory was 27.4 MB in the beginning and 29.2 MB in the end (delta: -1.8 MB). Peak memory consumption was 2.4 MB. Max. memory is 16.1 GB. * RCFGBuilder took 904.01 ms. Allocated memory is still 44.0 MB. Free memory was 29.1 MB in the beginning and 18.5 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1380.42 ms. Allocated memory is still 54.5 MB. Free memory was 38.6 MB in the beginning and 35.3 MB in the end (delta: 3.3 MB). Peak memory consumption was 18.1 MB. Max. memory is 16.1 GB. * Witness Printer took 5.58 ms. Allocated memory is still 54.5 MB. Free memory is still 35.0 MB. 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 someUnaryDOUBLE_SMToperation at line 82, overapproximation of someBinaryDOUBLE_SMTComparisonOperation at line 86. Possible FailurePath: [L81] double x = 0.0; [L82] double y = -0.0; [L26] __uint32_t msw, lsw; [L29] ieee_double_shape_type ew_u; [L30] ew_u.value = (x) [L31] EXPR ew_u.parts.msw [L31] (msw) = ew_u.parts.msw [L32] EXPR ew_u.parts.lsw [L32] (lsw) = ew_u.parts.lsw [L35-L36] COND FALSE !((msw == 0x00000000 && lsw == 0x00000000) || (msw == 0x80000000 && lsw == 0x00000000)) [L38-L39] COND FALSE !((msw >= 0x00100000 && msw <= 0x7fefffff) || (msw >= 0x80100000 && msw <= 0xffefffff)) [L41-L42] COND FALSE !(( msw <= 0x000fffff) || (msw >= 0x80000000 && msw <= 0x800fffff)) [L45-L46] COND FALSE !((msw == 0x7ff00000 && lsw == 0x00000000) || (msw == 0xfff00000 && lsw == 0x00000000)) [L49] return 0; [L54] COND TRUE __fpclassify_double(x) == 0 [L55] return y; [L83] double res = fmax_double(x, y); [L86] EXPR res == 0.0 && __signbit_double(res) == 0 [L86] COND TRUE !(res == 0.0 && __signbit_double(res) == 0) [L3] __assert_fail("0", "double_req_bl_1252b.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 33 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.2s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 251 SDtfs, 64 SDslu, 298 SDs, 0 SdLazy, 84 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 22 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=33occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 60 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 74 NumberOfCodeBlocks, 74 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 55 ConstructedInterpolants, 0 QuantifiedInterpolants, 799 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.0-ee8e70e [2020-10-24 15:06:19,922 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-24 15:06:19,925 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-24 15:06:19,961 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-24 15:06:19,961 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-24 15:06:19,963 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-24 15:06:19,965 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-24 15:06:19,967 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-24 15:06:19,970 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-24 15:06:19,971 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-24 15:06:19,972 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-24 15:06:19,974 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-24 15:06:19,975 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-24 15:06:19,976 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-24 15:06:19,978 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-24 15:06:19,979 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-24 15:06:19,980 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-24 15:06:19,982 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-24 15:06:19,984 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-24 15:06:19,986 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-24 15:06:19,988 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-24 15:06:19,993 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-24 15:06:19,994 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-24 15:06:19,995 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-24 15:06:19,999 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-24 15:06:19,999 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-24 15:06:20,000 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-24 15:06:20,001 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-24 15:06:20,002 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-24 15:06:20,003 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-24 15:06:20,004 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-24 15:06:20,005 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-24 15:06:20,006 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-24 15:06:20,007 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-24 15:06:20,018 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-24 15:06:20,019 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-24 15:06:20,020 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-24 15:06:20,024 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-24 15:06:20,025 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-24 15:06:20,029 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-24 15:06:20,030 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-24 15:06:20,035 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-10-24 15:06:20,063 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-24 15:06:20,063 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-24 15:06:20,064 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-24 15:06:20,065 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-24 15:06:20,065 INFO L138 SettingsManager]: * Use SBE=true [2020-10-24 15:06:20,065 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-24 15:06:20,065 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-24 15:06:20,066 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-24 15:06:20,066 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-24 15:06:20,066 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-24 15:06:20,066 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-24 15:06:20,066 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-24 15:06:20,067 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-10-24 15:06:20,067 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-10-24 15:06:20,067 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-24 15:06:20,067 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-24 15:06:20,067 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-24 15:06:20,067 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-24 15:06:20,068 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-24 15:06:20,068 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-24 15:06:20,068 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-24 15:06:20,068 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-24 15:06:20,069 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-24 15:06:20,069 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-24 15:06:20,069 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-24 15:06:20,069 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-24 15:06:20,069 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-10-24 15:06:20,070 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-10-24 15:06:20,070 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-24 15:06:20,070 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-24 15:06:20,070 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-24 15:06:20,070 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a6231fe9945ed231781bef28be0893007c672b08 [2020-10-24 15:06:20,510 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-24 15:06:20,551 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-24 15:06:20,554 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-24 15:06:20,556 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-24 15:06:20,557 INFO L275 PluginConnector]: CDTParser initialized [2020-10-24 15:06:20,558 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/double_req_bl_1252b.c [2020-10-24 15:06:20,644 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1487372d1/a290987ee82741a185ce114ee182f064/FLAG86b6c812a [2020-10-24 15:06:21,259 INFO L306 CDTParser]: Found 1 translation units. [2020-10-24 15:06:21,260 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_1252b.c [2020-10-24 15:06:21,269 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1487372d1/a290987ee82741a185ce114ee182f064/FLAG86b6c812a [2020-10-24 15:06:21,643 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1487372d1/a290987ee82741a185ce114ee182f064 [2020-10-24 15:06:21,649 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-24 15:06:21,661 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-24 15:06:21,664 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-24 15:06:21,664 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-24 15:06:21,669 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-24 15:06:21,670 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 03:06:21" (1/1) ... [2020-10-24 15:06:21,676 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e929e98 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:06:21, skipping insertion in model container [2020-10-24 15:06:21,676 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 03:06:21" (1/1) ... [2020-10-24 15:06:21,686 INFO L146 MainTranslator]: Starting translation in SV-COMP mode [2020-10-24 15:06:21,711 INFO L179 MainTranslator]: Built tables and reachable declarations [2020-10-24 15:06:21,982 INFO L211 PostProcessor]: Analyzing one entry point: main [2020-10-24 15:06:22,000 INFO L212 MainTranslator]: Completed pre-run [2020-10-24 15:06:22,033 INFO L211 PostProcessor]: Analyzing one entry point: main [2020-10-24 15:06:22,061 INFO L217 MainTranslator]: Completed translation [2020-10-24 15:06:22,062 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:06:22 WrapperNode [2020-10-24 15:06:22,062 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-24 15:06:22,063 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-24 15:06:22,063 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-24 15:06:22,064 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-24 15:06:22,073 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:06:22" (1/1) ... [2020-10-24 15:06:22,087 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:06:22" (1/1) ... [2020-10-24 15:06:22,117 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-24 15:06:22,118 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-24 15:06:22,119 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-24 15:06:22,119 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-24 15:06:22,129 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:06:22" (1/1) ... [2020-10-24 15:06:22,129 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:06:22" (1/1) ... [2020-10-24 15:06:22,134 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:06:22" (1/1) ... [2020-10-24 15:06:22,135 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:06:22" (1/1) ... [2020-10-24 15:06:22,146 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:06:22" (1/1) ... [2020-10-24 15:06:22,154 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:06:22" (1/1) ... [2020-10-24 15:06:22,162 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:06:22" (1/1) ... [2020-10-24 15:06:22,172 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-24 15:06:22,175 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-24 15:06:22,175 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-24 15:06:22,175 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-24 15:06:22,176 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:06:22" (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 [2020-10-24 15:06:22,270 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.float_to_bitvec_DOUBLE [2020-10-24 15:06:22,271 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2020-10-24 15:06:22,271 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-10-24 15:06:22,272 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-24 15:06:22,272 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-10-24 15:06:22,272 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-24 15:06:22,272 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-24 15:06:22,273 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-24 15:06:22,984 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-24 15:06:22,984 INFO L298 CfgBuilder]: Removed 20 assume(true) statements. [2020-10-24 15:06:22,986 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 03:06:22 BoogieIcfgContainer [2020-10-24 15:06:22,987 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-24 15:06:22,989 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-24 15:06:22,989 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-24 15:06:22,993 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-24 15:06:22,994 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 03:06:21" (1/3) ... [2020-10-24 15:06:22,995 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b65fc60 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 03:06:22, skipping insertion in model container [2020-10-24 15:06:22,995 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:06:22" (2/3) ... [2020-10-24 15:06:22,995 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b65fc60 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 03:06:22, skipping insertion in model container [2020-10-24 15:06:22,996 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 03:06:22" (3/3) ... [2020-10-24 15:06:22,998 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1252b.c [2020-10-24 15:06:23,014 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-24 15:06:23,020 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-24 15:06:23,035 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-24 15:06:23,065 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-24 15:06:23,066 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-24 15:06:23,066 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-24 15:06:23,066 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-24 15:06:23,066 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-24 15:06:23,067 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-24 15:06:23,067 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-24 15:06:23,067 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-24 15:06:23,083 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2020-10-24 15:06:23,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-24 15:06:23,090 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 15:06:23,091 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 15:06:23,092 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 15:06:23,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 15:06:23,099 INFO L82 PathProgramCache]: Analyzing trace with hash -958075201, now seen corresponding path program 1 times [2020-10-24 15:06:23,114 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-24 15:06:23,115 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1350329733] [2020-10-24 15:06:23,115 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 [2020-10-24 15:06:23,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 15:06:23,250 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 1 conjunts are in the unsatisfiable core [2020-10-24 15:06:23,254 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-24 15:06:23,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 15:06:23,279 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-24 15:06:23,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 15:06:23,285 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1350329733] [2020-10-24 15:06:23,285 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-24 15:06:23,286 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-10-24 15:06:23,287 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251597328] [2020-10-24 15:06:23,292 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-24 15:06:23,292 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-24 15:06:23,307 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-24 15:06:23,308 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-24 15:06:23,310 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 2 states. [2020-10-24 15:06:23,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 15:06:23,332 INFO L93 Difference]: Finished difference Result 63 states and 99 transitions. [2020-10-24 15:06:23,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-24 15:06:23,333 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-10-24 15:06:23,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 15:06:23,343 INFO L225 Difference]: With dead ends: 63 [2020-10-24 15:06:23,343 INFO L226 Difference]: Without dead ends: 29 [2020-10-24 15:06:23,346 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-24 15:06:23,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-10-24 15:06:23,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-10-24 15:06:23,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-24 15:06:23,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 40 transitions. [2020-10-24 15:06:23,383 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 40 transitions. Word has length 10 [2020-10-24 15:06:23,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 15:06:23,383 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 40 transitions. [2020-10-24 15:06:23,384 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-24 15:06:23,384 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 40 transitions. [2020-10-24 15:06:23,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-24 15:06:23,385 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 15:06:23,385 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 15:06:23,598 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-10-24 15:06:23,598 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 15:06:23,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 15:06:23,600 INFO L82 PathProgramCache]: Analyzing trace with hash 1001584898, now seen corresponding path program 1 times [2020-10-24 15:06:23,602 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-24 15:06:23,602 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [780654484] [2020-10-24 15:06:23,602 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 [2020-10-24 15:06:23,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 15:06:23,794 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 3 conjunts are in the unsatisfiable core [2020-10-24 15:06:23,796 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-24 15:06:23,896 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 15:06:23,896 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-24 15:06:23,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 15:06:23,949 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [780654484] [2020-10-24 15:06:23,949 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-24 15:06:23,949 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2020-10-24 15:06:23,950 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151935154] [2020-10-24 15:06:23,951 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-24 15:06:23,952 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-24 15:06:23,953 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-24 15:06:23,953 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-24 15:06:23,953 INFO L87 Difference]: Start difference. First operand 29 states and 40 transitions. Second operand 6 states. [2020-10-24 15:06:24,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 15:06:24,091 INFO L93 Difference]: Finished difference Result 68 states and 85 transitions. [2020-10-24 15:06:24,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-24 15:06:24,093 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2020-10-24 15:06:24,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 15:06:24,094 INFO L225 Difference]: With dead ends: 68 [2020-10-24 15:06:24,094 INFO L226 Difference]: Without dead ends: 59 [2020-10-24 15:06:24,096 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 [2020-10-24 15:06:24,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-10-24 15:06:24,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 31. [2020-10-24 15:06:24,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-10-24 15:06:24,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 42 transitions. [2020-10-24 15:06:24,110 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 42 transitions. Word has length 11 [2020-10-24 15:06:24,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 15:06:24,117 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 42 transitions. [2020-10-24 15:06:24,117 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-24 15:06:24,118 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 42 transitions. [2020-10-24 15:06:24,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-24 15:06:24,118 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 15:06:24,119 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 15:06:24,319 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-10-24 15:06:24,320 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 15:06:24,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 15:06:24,322 INFO L82 PathProgramCache]: Analyzing trace with hash 1219247017, now seen corresponding path program 1 times [2020-10-24 15:06:24,323 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-24 15:06:24,324 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1929242317] [2020-10-24 15:06:24,324 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 [2020-10-24 15:06:24,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 15:06:24,430 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-24 15:06:24,432 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-24 15:06:24,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 15:06:24,526 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-24 15:06:24,568 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 15:06:24,568 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1929242317] [2020-10-24 15:06:24,576 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-24 15:06:24,576 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2020-10-24 15:06:24,576 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541677130] [2020-10-24 15:06:24,577 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-24 15:06:24,577 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-24 15:06:24,578 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-24 15:06:24,579 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-24 15:06:24,579 INFO L87 Difference]: Start difference. First operand 31 states and 42 transitions. Second operand 6 states. [2020-10-24 15:06:24,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 15:06:24,740 INFO L93 Difference]: Finished difference Result 52 states and 69 transitions. [2020-10-24 15:06:24,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-24 15:06:24,743 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2020-10-24 15:06:24,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 15:06:24,744 INFO L225 Difference]: With dead ends: 52 [2020-10-24 15:06:24,744 INFO L226 Difference]: Without dead ends: 28 [2020-10-24 15:06:24,747 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-24 15:06:24,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-10-24 15:06:24,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-10-24 15:06:24,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-10-24 15:06:24,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 35 transitions. [2020-10-24 15:06:24,758 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 35 transitions. Word has length 14 [2020-10-24 15:06:24,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 15:06:24,759 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 35 transitions. [2020-10-24 15:06:24,759 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-24 15:06:24,759 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 35 transitions. [2020-10-24 15:06:24,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-24 15:06:24,763 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 15:06:24,763 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 15:06:24,974 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-10-24 15:06:24,975 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 15:06:24,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 15:06:24,976 INFO L82 PathProgramCache]: Analyzing trace with hash 1012446717, now seen corresponding path program 1 times [2020-10-24 15:06:24,977 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-24 15:06:24,978 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [875543669] [2020-10-24 15:06:24,978 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 [2020-10-24 15:06:25,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 15:06:25,113 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 3 conjunts are in the unsatisfiable core [2020-10-24 15:06:25,117 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-24 15:06:25,148 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 15:06:25,148 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-24 15:06:25,194 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 15:06:25,195 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [875543669] [2020-10-24 15:06:25,195 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-24 15:06:25,195 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2020-10-24 15:06:25,196 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789091202] [2020-10-24 15:06:25,197 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-24 15:06:25,198 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-24 15:06:25,198 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-24 15:06:25,199 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-24 15:06:25,199 INFO L87 Difference]: Start difference. First operand 28 states and 35 transitions. Second operand 6 states. [2020-10-24 15:06:25,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 15:06:25,327 INFO L93 Difference]: Finished difference Result 65 states and 76 transitions. [2020-10-24 15:06:25,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-24 15:06:25,328 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2020-10-24 15:06:25,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 15:06:25,333 INFO L225 Difference]: With dead ends: 65 [2020-10-24 15:06:25,334 INFO L226 Difference]: Without dead ends: 56 [2020-10-24 15:06:25,335 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-24 15:06:25,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-10-24 15:06:25,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 30. [2020-10-24 15:06:25,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-10-24 15:06:25,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 37 transitions. [2020-10-24 15:06:25,343 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 37 transitions. Word has length 16 [2020-10-24 15:06:25,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 15:06:25,343 INFO L481 AbstractCegarLoop]: Abstraction has 30 states and 37 transitions. [2020-10-24 15:06:25,344 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-24 15:06:25,344 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 37 transitions. [2020-10-24 15:06:25,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-24 15:06:25,345 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 15:06:25,345 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 15:06:25,548 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-10-24 15:06:25,549 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 15:06:25,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 15:06:25,551 INFO L82 PathProgramCache]: Analyzing trace with hash -414082333, now seen corresponding path program 1 times [2020-10-24 15:06:25,552 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-24 15:06:25,552 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1305787342] [2020-10-24 15:06:25,552 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 [2020-10-24 15:06:25,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 15:06:25,675 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-24 15:06:25,677 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-24 15:06:25,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 15:06:25,755 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-24 15:06:25,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 15:06:25,806 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1305787342] [2020-10-24 15:06:25,807 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-24 15:06:25,807 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2020-10-24 15:06:25,807 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787024767] [2020-10-24 15:06:25,807 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-24 15:06:25,808 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-24 15:06:25,808 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-24 15:06:25,809 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-24 15:06:25,809 INFO L87 Difference]: Start difference. First operand 30 states and 37 transitions. Second operand 4 states. [2020-10-24 15:06:25,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 15:06:25,832 INFO L93 Difference]: Finished difference Result 40 states and 47 transitions. [2020-10-24 15:06:25,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-24 15:06:25,833 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2020-10-24 15:06:25,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 15:06:25,834 INFO L225 Difference]: With dead ends: 40 [2020-10-24 15:06:25,834 INFO L226 Difference]: Without dead ends: 30 [2020-10-24 15:06:25,835 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-24 15:06:25,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-10-24 15:06:25,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2020-10-24 15:06:25,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-10-24 15:06:25,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 36 transitions. [2020-10-24 15:06:25,841 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 36 transitions. Word has length 18 [2020-10-24 15:06:25,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 15:06:25,842 INFO L481 AbstractCegarLoop]: Abstraction has 30 states and 36 transitions. [2020-10-24 15:06:25,842 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-24 15:06:25,842 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 36 transitions. [2020-10-24 15:06:25,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-24 15:06:25,843 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 15:06:25,843 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 15:06:26,060 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2020-10-24 15:06:26,061 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 15:06:26,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 15:06:26,062 INFO L82 PathProgramCache]: Analyzing trace with hash -356824031, now seen corresponding path program 1 times [2020-10-24 15:06:26,063 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-24 15:06:26,063 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2053138689] [2020-10-24 15:06:26,064 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 [2020-10-24 15:06:26,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 15:06:26,226 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-24 15:06:26,228 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-24 15:06:26,403 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-24 15:06:26,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 15:06:26,433 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-24 15:06:26,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 15:06:26,596 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2053138689] [2020-10-24 15:06:26,596 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-24 15:06:26,597 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 9 [2020-10-24 15:06:26,597 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135563922] [2020-10-24 15:06:26,597 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-24 15:06:26,597 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-24 15:06:26,598 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-24 15:06:26,599 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-24 15:06:26,599 INFO L87 Difference]: Start difference. First operand 30 states and 36 transitions. Second operand 9 states. [2020-10-24 15:06:26,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 15:06:26,952 INFO L93 Difference]: Finished difference Result 42 states and 47 transitions. [2020-10-24 15:06:26,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-24 15:06:26,953 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 18 [2020-10-24 15:06:26,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 15:06:26,954 INFO L225 Difference]: With dead ends: 42 [2020-10-24 15:06:26,955 INFO L226 Difference]: Without dead ends: 39 [2020-10-24 15:06:26,956 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2020-10-24 15:06:26,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-10-24 15:06:26,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 32. [2020-10-24 15:06:26,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-10-24 15:06:26,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 38 transitions. [2020-10-24 15:06:26,963 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 38 transitions. Word has length 18 [2020-10-24 15:06:26,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 15:06:26,963 INFO L481 AbstractCegarLoop]: Abstraction has 32 states and 38 transitions. [2020-10-24 15:06:26,964 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-24 15:06:26,964 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 38 transitions. [2020-10-24 15:06:26,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-24 15:06:26,964 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 15:06:26,965 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 15:06:27,179 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 mathsat -unsat_core_generation=3 [2020-10-24 15:06:27,180 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 15:06:27,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 15:06:27,181 INFO L82 PathProgramCache]: Analyzing trace with hash -208358251, now seen corresponding path program 1 times [2020-10-24 15:06:27,182 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-24 15:06:27,183 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1149588302] [2020-10-24 15:06:27,183 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 [2020-10-24 15:06:27,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 15:06:27,291 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-24 15:06:27,293 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-24 15:06:27,407 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 15:06:27,407 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-24 15:06:27,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 15:06:27,512 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1149588302] [2020-10-24 15:06:27,512 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-24 15:06:27,512 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2020-10-24 15:06:27,512 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760477734] [2020-10-24 15:06:27,513 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-24 15:06:27,513 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-24 15:06:27,513 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-24 15:06:27,514 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-24 15:06:27,514 INFO L87 Difference]: Start difference. First operand 32 states and 38 transitions. Second operand 8 states. [2020-10-24 15:06:27,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 15:06:27,715 INFO L93 Difference]: Finished difference Result 45 states and 50 transitions. [2020-10-24 15:06:27,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-24 15:06:27,718 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-10-24 15:06:27,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 15:06:27,718 INFO L225 Difference]: With dead ends: 45 [2020-10-24 15:06:27,719 INFO L226 Difference]: Without dead ends: 27 [2020-10-24 15:06:27,719 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-10-24 15:06:27,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-10-24 15:06:27,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2020-10-24 15:06:27,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-10-24 15:06:27,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions. [2020-10-24 15:06:27,725 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 19 [2020-10-24 15:06:27,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 15:06:27,726 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 28 transitions. [2020-10-24 15:06:27,726 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-24 15:06:27,726 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 28 transitions. [2020-10-24 15:06:27,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-24 15:06:27,727 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 15:06:27,727 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 15:06:27,932 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 mathsat -unsat_core_generation=3 [2020-10-24 15:06:27,933 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 15:06:27,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 15:06:27,934 INFO L82 PathProgramCache]: Analyzing trace with hash -1524231306, now seen corresponding path program 1 times [2020-10-24 15:06:27,935 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-24 15:06:27,935 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1776100209] [2020-10-24 15:06:27,936 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 9 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with mathsat -unsat_core_generation=3 [2020-10-24 15:06:28,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-24 15:06:28,207 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-24 15:06:28,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-24 15:06:28,426 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-24 15:06:28,508 INFO L173 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2020-10-24 15:06:28,508 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-24 15:06:28,708 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 mathsat -unsat_core_generation=3 [2020-10-24 15:06:28,749 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 03:06:28 BoogieIcfgContainer [2020-10-24 15:06:28,749 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-24 15:06:28,750 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-24 15:06:28,750 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-24 15:06:28,752 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-24 15:06:28,753 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 03:06:22" (3/4) ... [2020-10-24 15:06:28,755 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-10-24 15:06:28,822 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-24 15:06:28,822 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-24 15:06:28,824 INFO L168 Benchmark]: Toolchain (without parser) took 7172.14 ms. Allocated memory was 50.3 MB in the beginning and 73.4 MB in the end (delta: 23.1 MB). Free memory was 27.9 MB in the beginning and 46.1 MB in the end (delta: -18.2 MB). Peak memory consumption was 7.1 MB. Max. memory is 16.1 GB. [2020-10-24 15:06:28,825 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 35.7 MB. Free memory was 17.8 MB in the beginning and 17.7 MB in the end (delta: 19.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-24 15:06:28,826 INFO L168 Benchmark]: CACSL2BoogieTranslator took 398.43 ms. Allocated memory is still 50.3 MB. Free memory was 27.3 MB in the beginning and 29.2 MB in the end (delta: -1.9 MB). Peak memory consumption was 7.6 MB. Max. memory is 16.1 GB. [2020-10-24 15:06:28,827 INFO L168 Benchmark]: Boogie Procedure Inliner took 54.42 ms. Allocated memory is still 50.3 MB. Free memory was 29.2 MB in the beginning and 27.3 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-24 15:06:28,827 INFO L168 Benchmark]: Boogie Preprocessor took 54.10 ms. Allocated memory is still 50.3 MB. Free memory was 27.3 MB in the beginning and 25.6 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-24 15:06:28,828 INFO L168 Benchmark]: RCFGBuilder took 812.27 ms. Allocated memory was 50.3 MB in the beginning and 60.8 MB in the end (delta: 10.5 MB). Free memory was 25.5 MB in the beginning and 42.0 MB in the end (delta: -16.5 MB). Peak memory consumption was 8.6 MB. Max. memory is 16.1 GB. [2020-10-24 15:06:28,829 INFO L168 Benchmark]: TraceAbstraction took 5760.42 ms. Allocated memory was 60.8 MB in the beginning and 73.4 MB in the end (delta: 12.6 MB). Free memory was 41.7 MB in the beginning and 48.9 MB in the end (delta: -7.1 MB). Peak memory consumption was 28.7 MB. Max. memory is 16.1 GB. [2020-10-24 15:06:28,829 INFO L168 Benchmark]: Witness Printer took 71.89 ms. Allocated memory is still 73.4 MB. Free memory was 48.9 MB in the beginning and 46.1 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-24 15:06:28,834 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 35.7 MB. Free memory was 17.8 MB in the beginning and 17.7 MB in the end (delta: 19.7 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 398.43 ms. Allocated memory is still 50.3 MB. Free memory was 27.3 MB in the beginning and 29.2 MB in the end (delta: -1.9 MB). Peak memory consumption was 7.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 54.42 ms. Allocated memory is still 50.3 MB. Free memory was 29.2 MB in the beginning and 27.3 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 54.10 ms. Allocated memory is still 50.3 MB. Free memory was 27.3 MB in the beginning and 25.6 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 812.27 ms. Allocated memory was 50.3 MB in the beginning and 60.8 MB in the end (delta: 10.5 MB). Free memory was 25.5 MB in the beginning and 42.0 MB in the end (delta: -16.5 MB). Peak memory consumption was 8.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 5760.42 ms. Allocated memory was 60.8 MB in the beginning and 73.4 MB in the end (delta: 12.6 MB). Free memory was 41.7 MB in the beginning and 48.9 MB in the end (delta: -7.1 MB). Peak memory consumption was 28.7 MB. Max. memory is 16.1 GB. * Witness Printer took 71.89 ms. Allocated memory is still 73.4 MB. Free memory was 48.9 MB in the beginning and 46.1 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 3]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L81] EXPR 0.0 [L81] double x = 0.0; [L82] EXPR 0.0 [L82] EXPR -0.0 [L82] double y = -0.0; [L26] __uint32_t msw, lsw; [L29] ieee_double_shape_type ew_u; [L30] ew_u.value = (x) [L31] EXPR ew_u.parts.msw [L31] (msw) = ew_u.parts.msw [L32] EXPR ew_u.parts.lsw [L32] (lsw) = ew_u.parts.lsw [L35-L36] COND TRUE (msw == 0x00000000 && lsw == 0x00000000) || (msw == 0x80000000 && lsw == 0x00000000) [L37] return 2; [L54] COND FALSE !(__fpclassify_double(x) == 0) [L26] __uint32_t msw, lsw; [L29] ieee_double_shape_type ew_u; [L30] ew_u.value = (x) [L31] EXPR ew_u.parts.msw [L31] (msw) = ew_u.parts.msw [L32] EXPR ew_u.parts.lsw [L32] (lsw) = ew_u.parts.lsw [L35-L36] COND TRUE (msw == 0x00000000 && lsw == 0x00000000) || (msw == 0x80000000 && lsw == 0x00000000) [L37] return 2; [L56] COND FALSE !(__fpclassify_double(y) == 0) [L59] EXPR x > y ? x : y [L59] return x > y ? x : y; [L83] double res = fmax_double(x, y); [L86] EXPR 0.0 [L86] EXPR res == 0.0 && __signbit_double(res) == 0 [L63] __uint32_t msw; [L66] ieee_double_shape_type gh_u; [L67] gh_u.value = (x) [L68] EXPR gh_u.parts.msw [L68] (msw) = gh_u.parts.msw [L71] return (msw & 0x80000000) != 0; [L86] EXPR res == 0.0 && __signbit_double(res) == 0 [L86] COND TRUE !(res == 0.0 && __signbit_double(res) == 0) [L3] __assert_fail("0", "double_req_bl_1252b.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 33 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 5.6s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 1.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 234 SDtfs, 257 SDslu, 359 SDs, 0 SdLazy, 130 SolverSat, 20 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 209 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 1.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=33occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 7 MinimizatonAttempts, 61 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 128 NumberOfCodeBlocks, 128 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 198 ConstructedInterpolants, 51 QuantifiedInterpolants, 35042 SizeOfPredicates, 26 NumberOfNonLiveVariables, 427 ConjunctsInSsa, 40 ConjunctsInUnsatCore, 14 InterpolantComputations, 14 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...