./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/float-newlib/double_req_bl_1232b.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2880296f Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/float-newlib/double_req_bl_1232b.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c8aa0f6d603c21abbc49650bbaaea4f693aff7f0 ......................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/float-newlib/double_req_bl_1232b.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c8aa0f6d603c21abbc49650bbaaea4f693aff7f0 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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 0.2.0-2880296 [2020-12-02 15:35:05,670 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-02 15:35:05,674 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-02 15:35:05,730 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-02 15:35:05,730 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-02 15:35:05,735 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-02 15:35:05,738 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-02 15:35:05,745 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-02 15:35:05,748 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-02 15:35:05,754 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-02 15:35:05,755 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-02 15:35:05,756 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-02 15:35:05,756 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-02 15:35:05,758 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-02 15:35:05,764 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-02 15:35:05,765 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-02 15:35:05,766 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-02 15:35:05,769 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-02 15:35:05,771 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-02 15:35:05,773 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-02 15:35:05,775 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-02 15:35:05,776 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-02 15:35:05,777 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-02 15:35:05,778 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-02 15:35:05,781 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-02 15:35:05,782 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-02 15:35:05,782 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-02 15:35:05,783 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-02 15:35:05,784 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-02 15:35:05,785 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-02 15:35:05,786 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-02 15:35:05,787 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-02 15:35:05,787 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-02 15:35:05,788 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-02 15:35:05,790 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-02 15:35:05,799 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-02 15:35:05,801 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-02 15:35:05,802 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-02 15:35:05,804 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-02 15:35:05,805 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-02 15:35:05,808 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-02 15:35:05,809 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-12-02 15:35:05,853 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-02 15:35:05,854 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-02 15:35:05,857 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-02 15:35:05,857 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-02 15:35:05,858 INFO L138 SettingsManager]: * Use SBE=true [2020-12-02 15:35:05,858 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-02 15:35:05,858 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-02 15:35:05,858 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-02 15:35:05,859 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-02 15:35:05,859 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-02 15:35:05,860 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-02 15:35:05,860 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-02 15:35:05,861 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-02 15:35:05,861 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-02 15:35:05,861 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-02 15:35:05,861 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-02 15:35:05,862 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-02 15:35:05,862 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-02 15:35:05,863 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-02 15:35:05,863 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-12-02 15:35:05,863 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-02 15:35:05,863 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-02 15:35:05,864 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-02 15:35:05,864 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-02 15:35:05,864 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-02 15:35:05,864 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-02 15:35:05,865 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-02 15:35:05,865 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-02 15:35:05,866 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-02 15:35:05,866 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c8aa0f6d603c21abbc49650bbaaea4f693aff7f0 [2020-12-02 15:35:06,331 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-02 15:35:06,376 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-02 15:35:06,382 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-02 15:35:06,383 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-02 15:35:06,384 INFO L275 PluginConnector]: CDTParser initialized [2020-12-02 15:35:06,386 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1232b.c [2020-12-02 15:35:06,466 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e1769208e/8e7930dd3cfd4fd6a04e44ad5cdec57a/FLAG5bb5faff0 [2020-12-02 15:35:07,146 INFO L306 CDTParser]: Found 1 translation units. [2020-12-02 15:35:07,146 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1232b.c [2020-12-02 15:35:07,155 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e1769208e/8e7930dd3cfd4fd6a04e44ad5cdec57a/FLAG5bb5faff0 [2020-12-02 15:35:07,488 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e1769208e/8e7930dd3cfd4fd6a04e44ad5cdec57a [2020-12-02 15:35:07,492 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-02 15:35:07,494 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-02 15:35:07,497 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-02 15:35:07,497 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-02 15:35:07,502 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-02 15:35:07,503 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 03:35:07" (1/1) ... [2020-12-02 15:35:07,507 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b0561a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:35:07, skipping insertion in model container [2020-12-02 15:35:07,508 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 03:35:07" (1/1) ... [2020-12-02 15:35:07,518 INFO L146 MainTranslator]: Starting translation in SV-COMP mode [2020-12-02 15:35:07,538 INFO L179 MainTranslator]: Built tables and reachable declarations [2020-12-02 15:35:07,779 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1232b.c[1958,1971] [2020-12-02 15:35:07,782 INFO L211 PostProcessor]: Analyzing one entry point: main [2020-12-02 15:35:07,791 INFO L212 MainTranslator]: Completed pre-run [2020-12-02 15:35:07,819 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1232b.c[1958,1971] [2020-12-02 15:35:07,820 INFO L211 PostProcessor]: Analyzing one entry point: main [2020-12-02 15:35:07,838 INFO L217 MainTranslator]: Completed translation [2020-12-02 15:35:07,838 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:35:07 WrapperNode [2020-12-02 15:35:07,838 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-02 15:35:07,840 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-02 15:35:07,840 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-02 15:35:07,840 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-02 15:35:07,849 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:35:07" (1/1) ... [2020-12-02 15:35:07,859 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:35:07" (1/1) ... [2020-12-02 15:35:07,888 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-02 15:35:07,889 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-02 15:35:07,889 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-02 15:35:07,889 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-02 15:35:07,899 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:35:07" (1/1) ... [2020-12-02 15:35:07,900 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:35:07" (1/1) ... [2020-12-02 15:35:07,903 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:35:07" (1/1) ... [2020-12-02 15:35:07,903 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:35:07" (1/1) ... [2020-12-02 15:35:07,912 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:35:07" (1/1) ... [2020-12-02 15:35:07,917 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:35:07" (1/1) ... [2020-12-02 15:35:07,919 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:35:07" (1/1) ... [2020-12-02 15:35:07,922 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-02 15:35:07,923 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-02 15:35:07,924 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-02 15:35:07,924 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-02 15:35:07,925 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:35:07" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-02 15:35:08,060 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-02 15:35:08,062 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-02 15:35:08,062 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-12-02 15:35:08,063 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-02 15:35:08,063 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-02 15:35:08,064 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-02 15:35:08,064 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-02 15:35:08,732 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-02 15:35:08,732 INFO L298 CfgBuilder]: Removed 18 assume(true) statements. [2020-12-02 15:35:08,736 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 03:35:08 BoogieIcfgContainer [2020-12-02 15:35:08,736 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-02 15:35:08,740 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-02 15:35:08,740 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-02 15:35:08,745 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-02 15:35:08,745 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 03:35:07" (1/3) ... [2020-12-02 15:35:08,747 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a929f74 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 03:35:08, skipping insertion in model container [2020-12-02 15:35:08,748 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:35:07" (2/3) ... [2020-12-02 15:35:08,749 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a929f74 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 03:35:08, skipping insertion in model container [2020-12-02 15:35:08,749 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 03:35:08" (3/3) ... [2020-12-02 15:35:08,752 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1232b.c [2020-12-02 15:35:08,770 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-02 15:35:08,775 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-02 15:35:08,795 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-02 15:35:08,844 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-02 15:35:08,844 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-02 15:35:08,844 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-02 15:35:08,844 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-02 15:35:08,845 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-02 15:35:08,845 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-02 15:35:08,846 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-02 15:35:08,846 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-02 15:35:08,866 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2020-12-02 15:35:08,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-02 15:35:08,874 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 15:35:08,875 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 15:35:08,877 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 15:35:08,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 15:35:08,886 INFO L82 PathProgramCache]: Analyzing trace with hash -958075201, now seen corresponding path program 1 times [2020-12-02 15:35:08,897 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 15:35:08,898 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167500498] [2020-12-02 15:35:08,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 15:35:09,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 15:35:09,136 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 15:35:09,137 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167500498] [2020-12-02 15:35:09,138 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 15:35:09,139 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-02 15:35:09,140 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538779171] [2020-12-02 15:35:09,146 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-02 15:35:09,147 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 15:35:09,165 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-02 15:35:09,166 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-02 15:35:09,168 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 2 states. [2020-12-02 15:35:09,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 15:35:09,188 INFO L93 Difference]: Finished difference Result 62 states and 98 transitions. [2020-12-02 15:35:09,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-02 15:35:09,190 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-12-02 15:35:09,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 15:35:09,203 INFO L225 Difference]: With dead ends: 62 [2020-12-02 15:35:09,203 INFO L226 Difference]: Without dead ends: 29 [2020-12-02 15:35:09,207 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 [2020-12-02 15:35:09,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-12-02 15:35:09,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-12-02 15:35:09,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-12-02 15:35:09,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 40 transitions. [2020-12-02 15:35:09,250 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 40 transitions. Word has length 10 [2020-12-02 15:35:09,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 15:35:09,251 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 40 transitions. [2020-12-02 15:35:09,251 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-02 15:35:09,252 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 40 transitions. [2020-12-02 15:35:09,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-02 15:35:09,253 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 15:35:09,253 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 15:35:09,253 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-02 15:35:09,254 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 15:35:09,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 15:35:09,255 INFO L82 PathProgramCache]: Analyzing trace with hash 1001584898, now seen corresponding path program 1 times [2020-12-02 15:35:09,255 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 15:35:09,256 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1116214742] [2020-12-02 15:35:09,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 15:35:09,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 15:35:09,353 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 15:35:09,354 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1116214742] [2020-12-02 15:35:09,354 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 15:35:09,355 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-02 15:35:09,355 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311757164] [2020-12-02 15:35:09,356 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-02 15:35:09,357 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 15:35:09,358 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-02 15:35:09,359 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-02 15:35:09,359 INFO L87 Difference]: Start difference. First operand 29 states and 40 transitions. Second operand 4 states. [2020-12-02 15:35:09,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 15:35:09,438 INFO L93 Difference]: Finished difference Result 53 states and 67 transitions. [2020-12-02 15:35:09,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-02 15:35:09,439 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-12-02 15:35:09,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 15:35:09,440 INFO L225 Difference]: With dead ends: 53 [2020-12-02 15:35:09,440 INFO L226 Difference]: Without dead ends: 44 [2020-12-02 15:35:09,442 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 [2020-12-02 15:35:09,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-12-02 15:35:09,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 31. [2020-12-02 15:35:09,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-12-02 15:35:09,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 42 transitions. [2020-12-02 15:35:09,450 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 42 transitions. Word has length 11 [2020-12-02 15:35:09,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 15:35:09,451 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 42 transitions. [2020-12-02 15:35:09,451 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-02 15:35:09,451 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 42 transitions. [2020-12-02 15:35:09,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-02 15:35:09,452 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 15:35:09,452 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 15:35:09,453 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-02 15:35:09,453 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 15:35:09,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 15:35:09,454 INFO L82 PathProgramCache]: Analyzing trace with hash 502201410, now seen corresponding path program 1 times [2020-12-02 15:35:09,455 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 15:35:09,455 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1781308665] [2020-12-02 15:35:09,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 15:35:09,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 15:35:09,517 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 15:35:09,517 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1781308665] [2020-12-02 15:35:09,518 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 15:35:09,518 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-02 15:35:09,518 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828782109] [2020-12-02 15:35:09,519 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-02 15:35:09,519 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 15:35:09,520 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-02 15:35:09,520 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-02 15:35:09,521 INFO L87 Difference]: Start difference. First operand 31 states and 42 transitions. Second operand 4 states. [2020-12-02 15:35:09,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 15:35:09,582 INFO L93 Difference]: Finished difference Result 55 states and 69 transitions. [2020-12-02 15:35:09,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-02 15:35:09,583 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-12-02 15:35:09,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 15:35:09,585 INFO L225 Difference]: With dead ends: 55 [2020-12-02 15:35:09,585 INFO L226 Difference]: Without dead ends: 46 [2020-12-02 15:35:09,586 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 [2020-12-02 15:35:09,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-12-02 15:35:09,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 31. [2020-12-02 15:35:09,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-12-02 15:35:09,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 42 transitions. [2020-12-02 15:35:09,593 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 42 transitions. Word has length 12 [2020-12-02 15:35:09,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 15:35:09,593 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 42 transitions. [2020-12-02 15:35:09,594 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-02 15:35:09,594 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 42 transitions. [2020-12-02 15:35:09,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-02 15:35:09,595 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 15:35:09,595 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 15:35:09,595 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-02 15:35:09,596 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 15:35:09,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 15:35:09,596 INFO L82 PathProgramCache]: Analyzing trace with hash -1951233721, now seen corresponding path program 1 times [2020-12-02 15:35:09,597 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 15:35:09,597 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1105990380] [2020-12-02 15:35:09,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 15:35:09,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 15:35:09,691 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 15:35:09,691 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1105990380] [2020-12-02 15:35:09,692 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 15:35:09,692 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-02 15:35:09,692 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356259160] [2020-12-02 15:35:09,693 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-02 15:35:09,693 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 15:35:09,694 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-02 15:35:09,695 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-02 15:35:09,695 INFO L87 Difference]: Start difference. First operand 31 states and 42 transitions. Second operand 4 states. [2020-12-02 15:35:09,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 15:35:09,784 INFO L93 Difference]: Finished difference Result 57 states and 71 transitions. [2020-12-02 15:35:09,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-02 15:35:09,786 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-12-02 15:35:09,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 15:35:09,791 INFO L225 Difference]: With dead ends: 57 [2020-12-02 15:35:09,793 INFO L226 Difference]: Without dead ends: 48 [2020-12-02 15:35:09,795 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 [2020-12-02 15:35:09,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-12-02 15:35:09,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 31. [2020-12-02 15:35:09,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-12-02 15:35:09,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 42 transitions. [2020-12-02 15:35:09,811 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 42 transitions. Word has length 13 [2020-12-02 15:35:09,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 15:35:09,812 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 42 transitions. [2020-12-02 15:35:09,813 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-02 15:35:09,813 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 42 transitions. [2020-12-02 15:35:09,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-02 15:35:09,816 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 15:35:09,817 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 15:35:09,818 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-02 15:35:09,819 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 15:35:09,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 15:35:09,820 INFO L82 PathProgramCache]: Analyzing trace with hash -555760345, now seen corresponding path program 1 times [2020-12-02 15:35:09,820 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 15:35:09,821 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1766279531] [2020-12-02 15:35:09,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 15:35:09,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 15:35:09,961 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 15:35:09,961 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1766279531] [2020-12-02 15:35:09,962 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 15:35:09,962 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-02 15:35:09,962 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612926494] [2020-12-02 15:35:09,963 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-02 15:35:09,963 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 15:35:09,964 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-02 15:35:09,965 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-02 15:35:09,965 INFO L87 Difference]: Start difference. First operand 31 states and 42 transitions. Second operand 4 states. [2020-12-02 15:35:10,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 15:35:10,074 INFO L93 Difference]: Finished difference Result 55 states and 69 transitions. [2020-12-02 15:35:10,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-02 15:35:10,075 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-12-02 15:35:10,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 15:35:10,078 INFO L225 Difference]: With dead ends: 55 [2020-12-02 15:35:10,079 INFO L226 Difference]: Without dead ends: 46 [2020-12-02 15:35:10,080 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 [2020-12-02 15:35:10,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-12-02 15:35:10,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 31. [2020-12-02 15:35:10,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-12-02 15:35:10,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 42 transitions. [2020-12-02 15:35:10,094 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 42 transitions. Word has length 14 [2020-12-02 15:35:10,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 15:35:10,095 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 42 transitions. [2020-12-02 15:35:10,096 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-02 15:35:10,096 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 42 transitions. [2020-12-02 15:35:10,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-02 15:35:10,097 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 15:35:10,098 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 15:35:10,098 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-02 15:35:10,098 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 15:35:10,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 15:35:10,100 INFO L82 PathProgramCache]: Analyzing trace with hash 1219247017, now seen corresponding path program 1 times [2020-12-02 15:35:10,101 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 15:35:10,101 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717810751] [2020-12-02 15:35:10,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 15:35:10,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-02 15:35:10,168 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-02 15:35:10,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-02 15:35:10,203 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-02 15:35:10,239 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-12-02 15:35:10,239 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-02 15:35:10,240 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-02 15:35:10,283 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 03:35:10 BoogieIcfgContainer [2020-12-02 15:35:10,284 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-02 15:35:10,285 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-02 15:35:10,285 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-02 15:35:10,285 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-02 15:35:10,286 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 03:35:08" (3/4) ... [2020-12-02 15:35:10,291 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-12-02 15:35:10,291 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-02 15:35:10,295 INFO L168 Benchmark]: Toolchain (without parser) took 2799.25 ms. Allocated memory was 46.1 MB in the beginning and 73.4 MB in the end (delta: 27.3 MB). Free memory was 24.2 MB in the beginning and 55.9 MB in the end (delta: -31.7 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-02 15:35:10,295 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 46.1 MB. Free memory is still 26.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-02 15:35:10,297 INFO L168 Benchmark]: CACSL2BoogieTranslator took 342.09 ms. Allocated memory is still 46.1 MB. Free memory was 24.0 MB in the beginning and 24.5 MB in the end (delta: -520.1 kB). Peak memory consumption was 5.5 MB. Max. memory is 16.1 GB. [2020-12-02 15:35:10,298 INFO L168 Benchmark]: Boogie Procedure Inliner took 48.61 ms. Allocated memory is still 46.1 MB. Free memory was 24.5 MB in the beginning and 22.6 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-02 15:35:10,299 INFO L168 Benchmark]: Boogie Preprocessor took 33.51 ms. Allocated memory is still 46.1 MB. Free memory was 22.6 MB in the beginning and 21.1 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-02 15:35:10,300 INFO L168 Benchmark]: RCFGBuilder took 812.41 ms. Allocated memory was 46.1 MB in the beginning and 56.6 MB in the end (delta: 10.5 MB). Free memory was 21.1 MB in the beginning and 35.4 MB in the end (delta: -14.3 MB). Peak memory consumption was 9.0 MB. Max. memory is 16.1 GB. [2020-12-02 15:35:10,301 INFO L168 Benchmark]: TraceAbstraction took 1544.50 ms. Allocated memory was 56.6 MB in the beginning and 73.4 MB in the end (delta: 16.8 MB). Free memory was 35.0 MB in the beginning and 55.9 MB in the end (delta: -20.9 MB). Peak memory consumption was 22.1 MB. Max. memory is 16.1 GB. [2020-12-02 15:35:10,302 INFO L168 Benchmark]: Witness Printer took 6.91 ms. Allocated memory is still 73.4 MB. Free memory is still 55.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-02 15:35:10,307 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 46.1 MB. Free memory is still 26.8 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 342.09 ms. Allocated memory is still 46.1 MB. Free memory was 24.0 MB in the beginning and 24.5 MB in the end (delta: -520.1 kB). Peak memory consumption was 5.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 48.61 ms. Allocated memory is still 46.1 MB. Free memory was 24.5 MB in the beginning and 22.6 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 33.51 ms. Allocated memory is still 46.1 MB. Free memory was 22.6 MB in the beginning and 21.1 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 812.41 ms. Allocated memory was 46.1 MB in the beginning and 56.6 MB in the end (delta: 10.5 MB). Free memory was 21.1 MB in the beginning and 35.4 MB in the end (delta: -14.3 MB). Peak memory consumption was 9.0 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1544.50 ms. Allocated memory was 56.6 MB in the beginning and 73.4 MB in the end (delta: 16.8 MB). Free memory was 35.0 MB in the beginning and 55.9 MB in the end (delta: -20.9 MB). Peak memory consumption was 22.1 MB. Max. memory is 16.1 GB. * Witness Printer took 6.91 ms. Allocated memory is still 73.4 MB. Free memory is still 55.9 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 82]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someUnaryDOUBLE_SMToperation at line 76, overapproximation of someBinaryDOUBLE_SMTComparisonOperation at line 81. Possible FailurePath: [L76] double x = -0.0; [L77] double y = 0.0; [L21] __uint32_t msw, lsw; [L24] ieee_double_shape_type ew_u; [L25] ew_u.value = (x) [L26] EXPR ew_u.parts.msw [L26] (msw) = ew_u.parts.msw [L27] EXPR ew_u.parts.lsw [L27] (lsw) = ew_u.parts.lsw [L30-L31] COND FALSE !((msw == 0x00000000 && lsw == 0x00000000) || (msw == 0x80000000 && lsw == 0x00000000)) [L33-L34] COND FALSE !((msw >= 0x00100000 && msw <= 0x7fefffff) || (msw >= 0x80100000 && msw <= 0xffefffff)) [L36-L37] COND FALSE !(( msw <= 0x000fffff) || (msw >= 0x80000000 && msw <= 0x800fffff)) [L40-L41] COND FALSE !((msw == 0x7ff00000 && lsw == 0x00000000) || (msw == 0xfff00000 && lsw == 0x00000000)) [L44] return 0; [L48] COND TRUE __fpclassify_double(x) == 0 [L49] return y; [L78] double res = fmin_double(x, y); [L81] EXPR res == -0.0 && __signbit_double(res) == 1 [L81] COND TRUE !(res == -0.0 && __signbit_double(res) == 1) [L82] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 32 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.4s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 251 SDtfs, 64 SDslu, 298 SDs, 0 SdLazy, 84 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 22 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=32occurred 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, 0.2s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 74 NumberOfCodeBlocks, 74 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 55 ConstructedInterpolants, 0 QuantifiedInterpolants, 799 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.0-2880296 [2020-12-02 15:35:12,789 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-02 15:35:12,792 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-02 15:35:12,853 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-02 15:35:12,854 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-02 15:35:12,860 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-02 15:35:12,863 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-02 15:35:12,870 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-02 15:35:12,877 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-02 15:35:12,883 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-02 15:35:12,884 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-02 15:35:12,886 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-02 15:35:12,887 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-02 15:35:12,891 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-02 15:35:12,893 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-02 15:35:12,894 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-02 15:35:12,896 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-02 15:35:12,900 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-02 15:35:12,904 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-02 15:35:12,911 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-02 15:35:12,913 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-02 15:35:12,915 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-02 15:35:12,918 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-02 15:35:12,919 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-02 15:35:12,926 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-02 15:35:12,927 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-02 15:35:12,927 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-02 15:35:12,930 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-02 15:35:12,931 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-02 15:35:12,932 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-02 15:35:12,932 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-02 15:35:12,933 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-02 15:35:12,935 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-02 15:35:12,936 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-02 15:35:12,937 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-02 15:35:12,938 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-02 15:35:12,939 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-02 15:35:12,939 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-02 15:35:12,939 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-02 15:35:12,942 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-02 15:35:12,943 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-02 15:35:12,944 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-12-02 15:35:12,998 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-02 15:35:12,999 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-02 15:35:13,001 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-02 15:35:13,002 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-02 15:35:13,002 INFO L138 SettingsManager]: * Use SBE=true [2020-12-02 15:35:13,003 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-02 15:35:13,003 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-02 15:35:13,003 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-02 15:35:13,003 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-02 15:35:13,004 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-02 15:35:13,005 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-02 15:35:13,005 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-02 15:35:13,006 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-12-02 15:35:13,006 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-12-02 15:35:13,006 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-02 15:35:13,006 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-02 15:35:13,007 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-02 15:35:13,007 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-02 15:35:13,007 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-02 15:35:13,008 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-02 15:35:13,008 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-12-02 15:35:13,008 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-02 15:35:13,009 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-02 15:35:13,009 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-02 15:35:13,009 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-02 15:35:13,010 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-02 15:35:13,010 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-12-02 15:35:13,010 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-12-02 15:35:13,010 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-02 15:35:13,011 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-02 15:35:13,011 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-02 15:35:13,011 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c8aa0f6d603c21abbc49650bbaaea4f693aff7f0 [2020-12-02 15:35:13,431 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-02 15:35:13,471 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-02 15:35:13,477 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-02 15:35:13,480 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-02 15:35:13,481 INFO L275 PluginConnector]: CDTParser initialized [2020-12-02 15:35:13,482 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1232b.c [2020-12-02 15:35:13,562 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bcbae5a57/f10b8468dcc947a288cb0caaa17b4239/FLAGaa8995643 [2020-12-02 15:35:14,130 INFO L306 CDTParser]: Found 1 translation units. [2020-12-02 15:35:14,130 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1232b.c [2020-12-02 15:35:14,138 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bcbae5a57/f10b8468dcc947a288cb0caaa17b4239/FLAGaa8995643 [2020-12-02 15:35:14,509 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bcbae5a57/f10b8468dcc947a288cb0caaa17b4239 [2020-12-02 15:35:14,512 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-02 15:35:14,517 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-02 15:35:14,522 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-02 15:35:14,523 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-02 15:35:14,527 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-02 15:35:14,528 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 03:35:14" (1/1) ... [2020-12-02 15:35:14,534 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3dc13b73 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:35:14, skipping insertion in model container [2020-12-02 15:35:14,534 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 03:35:14" (1/1) ... [2020-12-02 15:35:14,544 INFO L146 MainTranslator]: Starting translation in SV-COMP mode [2020-12-02 15:35:14,573 INFO L179 MainTranslator]: Built tables and reachable declarations [2020-12-02 15:35:14,840 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1232b.c[1958,1971] [2020-12-02 15:35:14,846 INFO L211 PostProcessor]: Analyzing one entry point: main [2020-12-02 15:35:14,864 INFO L212 MainTranslator]: Completed pre-run [2020-12-02 15:35:14,898 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1232b.c[1958,1971] [2020-12-02 15:35:14,899 INFO L211 PostProcessor]: Analyzing one entry point: main [2020-12-02 15:35:14,924 INFO L217 MainTranslator]: Completed translation [2020-12-02 15:35:14,925 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:35:14 WrapperNode [2020-12-02 15:35:14,925 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-02 15:35:14,927 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-02 15:35:14,927 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-02 15:35:14,927 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-02 15:35:14,936 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:35:14" (1/1) ... [2020-12-02 15:35:14,950 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:35:14" (1/1) ... [2020-12-02 15:35:14,981 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-02 15:35:14,982 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-02 15:35:14,982 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-02 15:35:14,983 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-02 15:35:14,992 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:35:14" (1/1) ... [2020-12-02 15:35:14,993 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:35:14" (1/1) ... [2020-12-02 15:35:14,998 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:35:14" (1/1) ... [2020-12-02 15:35:14,998 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:35:14" (1/1) ... [2020-12-02 15:35:15,009 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:35:14" (1/1) ... [2020-12-02 15:35:15,015 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:35:14" (1/1) ... [2020-12-02 15:35:15,018 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:35:14" (1/1) ... [2020-12-02 15:35:15,037 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-02 15:35:15,038 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-02 15:35:15,038 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-02 15:35:15,038 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-02 15:35:15,039 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:35:14" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-02 15:35:15,140 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.float_to_bitvec_DOUBLE [2020-12-02 15:35:15,140 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2020-12-02 15:35:15,141 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-12-02 15:35:15,141 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-02 15:35:15,141 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-12-02 15:35:15,141 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-02 15:35:15,142 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-02 15:35:15,142 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-02 15:35:15,695 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-02 15:35:15,695 INFO L298 CfgBuilder]: Removed 18 assume(true) statements. [2020-12-02 15:35:15,697 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 03:35:15 BoogieIcfgContainer [2020-12-02 15:35:15,698 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-02 15:35:15,699 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-02 15:35:15,700 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-02 15:35:15,703 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-02 15:35:15,704 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 03:35:14" (1/3) ... [2020-12-02 15:35:15,705 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62ca4a50 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 03:35:15, skipping insertion in model container [2020-12-02 15:35:15,705 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:35:14" (2/3) ... [2020-12-02 15:35:15,705 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62ca4a50 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 03:35:15, skipping insertion in model container [2020-12-02 15:35:15,706 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 03:35:15" (3/3) ... [2020-12-02 15:35:15,707 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1232b.c [2020-12-02 15:35:15,725 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-02 15:35:15,730 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-02 15:35:15,743 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-02 15:35:15,773 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-02 15:35:15,773 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-02 15:35:15,773 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-02 15:35:15,774 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-02 15:35:15,774 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-02 15:35:15,774 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-02 15:35:15,774 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-02 15:35:15,774 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-02 15:35:15,790 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2020-12-02 15:35:15,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-02 15:35:15,797 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 15:35:15,798 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 15:35:15,798 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 15:35:15,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 15:35:15,806 INFO L82 PathProgramCache]: Analyzing trace with hash -958075201, now seen corresponding path program 1 times [2020-12-02 15:35:15,820 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-12-02 15:35:15,821 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [999950172] [2020-12-02 15:35:15,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2020-12-02 15:35:15,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 15:35:15,980 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 1 conjunts are in the unsatisfiable core [2020-12-02 15:35:15,986 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-02 15:35:16,022 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 15:35:16,023 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-02 15:35:16,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 15:35:16,042 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [999950172] [2020-12-02 15:35:16,043 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-02 15:35:16,043 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-12-02 15:35:16,045 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349588774] [2020-12-02 15:35:16,050 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-02 15:35:16,051 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-12-02 15:35:16,065 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-02 15:35:16,067 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-02 15:35:16,069 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 2 states. [2020-12-02 15:35:16,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 15:35:16,096 INFO L93 Difference]: Finished difference Result 62 states and 98 transitions. [2020-12-02 15:35:16,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-02 15:35:16,098 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-12-02 15:35:16,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 15:35:16,111 INFO L225 Difference]: With dead ends: 62 [2020-12-02 15:35:16,111 INFO L226 Difference]: Without dead ends: 29 [2020-12-02 15:35:16,115 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 [2020-12-02 15:35:16,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-12-02 15:35:16,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-12-02 15:35:16,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-12-02 15:35:16,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 40 transitions. [2020-12-02 15:35:16,155 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 40 transitions. Word has length 10 [2020-12-02 15:35:16,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 15:35:16,156 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 40 transitions. [2020-12-02 15:35:16,156 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-02 15:35:16,157 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 40 transitions. [2020-12-02 15:35:16,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-02 15:35:16,157 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 15:35:16,158 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 15:35:16,372 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-12-02 15:35:16,373 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 15:35:16,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 15:35:16,375 INFO L82 PathProgramCache]: Analyzing trace with hash 1001584898, now seen corresponding path program 1 times [2020-12-02 15:35:16,376 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-12-02 15:35:16,377 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [634364376] [2020-12-02 15:35:16,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2020-12-02 15:35:16,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 15:35:16,510 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-02 15:35:16,511 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-02 15:35:16,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 15:35:16,558 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-02 15:35:16,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 15:35:16,585 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [634364376] [2020-12-02 15:35:16,585 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-02 15:35:16,586 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2020-12-02 15:35:16,586 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709526401] [2020-12-02 15:35:16,588 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-02 15:35:16,588 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-12-02 15:35:16,589 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-02 15:35:16,590 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-12-02 15:35:16,590 INFO L87 Difference]: Start difference. First operand 29 states and 40 transitions. Second operand 6 states. [2020-12-02 15:35:16,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 15:35:16,684 INFO L93 Difference]: Finished difference Result 68 states and 85 transitions. [2020-12-02 15:35:16,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-02 15:35:16,685 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2020-12-02 15:35:16,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 15:35:16,686 INFO L225 Difference]: With dead ends: 68 [2020-12-02 15:35:16,686 INFO L226 Difference]: Without dead ends: 59 [2020-12-02 15:35:16,688 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-02 15:35:16,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-12-02 15:35:16,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 31. [2020-12-02 15:35:16,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-12-02 15:35:16,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 42 transitions. [2020-12-02 15:35:16,696 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 42 transitions. Word has length 11 [2020-12-02 15:35:16,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 15:35:16,697 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 42 transitions. [2020-12-02 15:35:16,697 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-02 15:35:16,697 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 42 transitions. [2020-12-02 15:35:16,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-02 15:35:16,698 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 15:35:16,699 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 15:35:16,913 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-12-02 15:35:16,913 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 15:35:16,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 15:35:16,916 INFO L82 PathProgramCache]: Analyzing trace with hash 1219247017, now seen corresponding path program 1 times [2020-12-02 15:35:16,917 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-12-02 15:35:16,917 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1430648159] [2020-12-02 15:35:16,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2020-12-02 15:35:17,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 15:35:17,016 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 8 conjunts are in the unsatisfiable core [2020-12-02 15:35:17,018 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-02 15:35:17,146 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 15:35:17,146 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-02 15:35:17,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 15:35:17,220 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1430648159] [2020-12-02 15:35:17,227 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-02 15:35:17,227 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2020-12-02 15:35:17,228 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241466862] [2020-12-02 15:35:17,229 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-02 15:35:17,229 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-12-02 15:35:17,235 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-02 15:35:17,239 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-12-02 15:35:17,240 INFO L87 Difference]: Start difference. First operand 31 states and 42 transitions. Second operand 6 states. [2020-12-02 15:35:17,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 15:35:17,338 INFO L93 Difference]: Finished difference Result 52 states and 69 transitions. [2020-12-02 15:35:17,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-02 15:35:17,339 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2020-12-02 15:35:17,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 15:35:17,340 INFO L225 Difference]: With dead ends: 52 [2020-12-02 15:35:17,340 INFO L226 Difference]: Without dead ends: 28 [2020-12-02 15:35:17,341 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 [2020-12-02 15:35:17,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-12-02 15:35:17,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-12-02 15:35:17,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-12-02 15:35:17,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 35 transitions. [2020-12-02 15:35:17,346 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 35 transitions. Word has length 14 [2020-12-02 15:35:17,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 15:35:17,347 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 35 transitions. [2020-12-02 15:35:17,347 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-02 15:35:17,347 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 35 transitions. [2020-12-02 15:35:17,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-02 15:35:17,348 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 15:35:17,349 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 15:35:17,567 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-12-02 15:35:17,568 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 15:35:17,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 15:35:17,569 INFO L82 PathProgramCache]: Analyzing trace with hash 1012446717, now seen corresponding path program 1 times [2020-12-02 15:35:17,570 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-12-02 15:35:17,570 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [509183057] [2020-12-02 15:35:17,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2020-12-02 15:35:17,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 15:35:17,681 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-02 15:35:17,682 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-02 15:35:17,709 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 15:35:17,710 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-02 15:35:17,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 15:35:17,751 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [509183057] [2020-12-02 15:35:17,752 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-02 15:35:17,753 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2020-12-02 15:35:17,753 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974421306] [2020-12-02 15:35:17,754 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-02 15:35:17,755 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-12-02 15:35:17,756 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-02 15:35:17,758 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-12-02 15:35:17,759 INFO L87 Difference]: Start difference. First operand 28 states and 35 transitions. Second operand 6 states. [2020-12-02 15:35:17,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 15:35:17,851 INFO L93 Difference]: Finished difference Result 65 states and 76 transitions. [2020-12-02 15:35:17,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-02 15:35:17,852 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2020-12-02 15:35:17,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 15:35:17,856 INFO L225 Difference]: With dead ends: 65 [2020-12-02 15:35:17,857 INFO L226 Difference]: Without dead ends: 56 [2020-12-02 15:35:17,857 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 [2020-12-02 15:35:17,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-12-02 15:35:17,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 30. [2020-12-02 15:35:17,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-12-02 15:35:17,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 37 transitions. [2020-12-02 15:35:17,864 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 37 transitions. Word has length 16 [2020-12-02 15:35:17,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 15:35:17,864 INFO L481 AbstractCegarLoop]: Abstraction has 30 states and 37 transitions. [2020-12-02 15:35:17,864 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-02 15:35:17,865 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 37 transitions. [2020-12-02 15:35:17,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-02 15:35:17,865 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 15:35:17,866 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 15:35:18,081 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-12-02 15:35:18,082 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 15:35:18,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 15:35:18,083 INFO L82 PathProgramCache]: Analyzing trace with hash -414082333, now seen corresponding path program 1 times [2020-12-02 15:35:18,083 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-12-02 15:35:18,083 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [656688084] [2020-12-02 15:35:18,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 6 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2020-12-02 15:35:18,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 15:35:18,213 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 8 conjunts are in the unsatisfiable core [2020-12-02 15:35:18,216 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-02 15:35:18,308 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 15:35:18,309 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-02 15:35:18,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 15:35:18,368 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [656688084] [2020-12-02 15:35:18,368 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-02 15:35:18,369 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2020-12-02 15:35:18,369 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120075328] [2020-12-02 15:35:18,370 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-02 15:35:18,370 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-12-02 15:35:18,371 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-02 15:35:18,371 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-02 15:35:18,371 INFO L87 Difference]: Start difference. First operand 30 states and 37 transitions. Second operand 4 states. [2020-12-02 15:35:18,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 15:35:18,391 INFO L93 Difference]: Finished difference Result 40 states and 47 transitions. [2020-12-02 15:35:18,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-02 15:35:18,392 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2020-12-02 15:35:18,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 15:35:18,393 INFO L225 Difference]: With dead ends: 40 [2020-12-02 15:35:18,393 INFO L226 Difference]: Without dead ends: 30 [2020-12-02 15:35:18,394 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 [2020-12-02 15:35:18,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-12-02 15:35:18,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2020-12-02 15:35:18,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-12-02 15:35:18,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 36 transitions. [2020-12-02 15:35:18,400 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 36 transitions. Word has length 18 [2020-12-02 15:35:18,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 15:35:18,401 INFO L481 AbstractCegarLoop]: Abstraction has 30 states and 36 transitions. [2020-12-02 15:35:18,401 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-02 15:35:18,401 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 36 transitions. [2020-12-02 15:35:18,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-02 15:35:18,402 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 15:35:18,402 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 15:35:18,616 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2020-12-02 15:35:18,617 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 15:35:18,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 15:35:18,618 INFO L82 PathProgramCache]: Analyzing trace with hash -356824031, now seen corresponding path program 1 times [2020-12-02 15:35:18,619 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-12-02 15:35:18,619 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1372228419] [2020-12-02 15:35:18,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 7 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with mathsat -unsat_core_generation=3 [2020-12-02 15:35:18,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 15:35:18,757 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 10 conjunts are in the unsatisfiable core [2020-12-02 15:35:18,761 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-02 15:35:18,839 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-02 15:35:18,843 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-02 15:35:18,846 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-02 15:35:18,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 15:35:18,872 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-02 15:35:19,160 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 15:35:19,161 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1372228419] [2020-12-02 15:35:19,161 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-02 15:35:19,162 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 9 [2020-12-02 15:35:19,162 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922075601] [2020-12-02 15:35:19,162 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-02 15:35:19,163 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-12-02 15:35:19,163 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-02 15:35:19,164 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-12-02 15:35:19,164 INFO L87 Difference]: Start difference. First operand 30 states and 36 transitions. Second operand 9 states. [2020-12-02 15:35:19,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 15:35:19,335 INFO L93 Difference]: Finished difference Result 42 states and 47 transitions. [2020-12-02 15:35:19,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-02 15:35:19,336 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 18 [2020-12-02 15:35:19,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 15:35:19,337 INFO L225 Difference]: With dead ends: 42 [2020-12-02 15:35:19,337 INFO L226 Difference]: Without dead ends: 39 [2020-12-02 15:35:19,337 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2020-12-02 15:35:19,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-12-02 15:35:19,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 32. [2020-12-02 15:35:19,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-12-02 15:35:19,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 38 transitions. [2020-12-02 15:35:19,344 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 38 transitions. Word has length 18 [2020-12-02 15:35:19,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 15:35:19,345 INFO L481 AbstractCegarLoop]: Abstraction has 32 states and 38 transitions. [2020-12-02 15:35:19,345 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-02 15:35:19,345 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 38 transitions. [2020-12-02 15:35:19,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-12-02 15:35:19,346 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 15:35:19,346 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 15:35:19,558 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 mathsat -unsat_core_generation=3 [2020-12-02 15:35:19,562 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 15:35:19,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 15:35:19,562 INFO L82 PathProgramCache]: Analyzing trace with hash -208358251, now seen corresponding path program 1 times [2020-12-02 15:35:19,563 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-12-02 15:35:19,563 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1225119688] [2020-12-02 15:35:19,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 8 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with mathsat -unsat_core_generation=3 [2020-12-02 15:35:19,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 15:35:19,670 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 7 conjunts are in the unsatisfiable core [2020-12-02 15:35:19,672 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-02 15:35:19,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 15:35:19,738 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-02 15:35:19,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 15:35:19,802 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1225119688] [2020-12-02 15:35:19,802 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-02 15:35:19,803 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2020-12-02 15:35:19,803 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159736404] [2020-12-02 15:35:19,803 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-02 15:35:19,804 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-12-02 15:35:19,804 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-02 15:35:19,805 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-12-02 15:35:19,805 INFO L87 Difference]: Start difference. First operand 32 states and 38 transitions. Second operand 8 states. [2020-12-02 15:35:19,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 15:35:19,901 INFO L93 Difference]: Finished difference Result 45 states and 50 transitions. [2020-12-02 15:35:19,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-02 15:35:19,902 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-12-02 15:35:19,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 15:35:19,903 INFO L225 Difference]: With dead ends: 45 [2020-12-02 15:35:19,903 INFO L226 Difference]: Without dead ends: 27 [2020-12-02 15:35:19,904 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-12-02 15:35:19,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-12-02 15:35:19,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2020-12-02 15:35:19,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-12-02 15:35:19,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions. [2020-12-02 15:35:19,909 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 19 [2020-12-02 15:35:19,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 15:35:19,910 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 28 transitions. [2020-12-02 15:35:19,910 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-02 15:35:19,910 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 28 transitions. [2020-12-02 15:35:19,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-12-02 15:35:19,911 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 15:35:19,911 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] [2020-12-02 15:35:20,124 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 mathsat -unsat_core_generation=3 [2020-12-02 15:35:20,124 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 15:35:20,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 15:35:20,125 INFO L82 PathProgramCache]: Analyzing trace with hash -1524231306, now seen corresponding path program 1 times [2020-12-02 15:35:20,126 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-12-02 15:35:20,126 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1678403178] [2020-12-02 15:35:20,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 9 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with mathsat -unsat_core_generation=3 [2020-12-02 15:35:20,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-02 15:35:20,348 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-02 15:35:20,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-02 15:35:20,630 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-02 15:35:20,701 INFO L173 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2020-12-02 15:35:20,702 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-02 15:35:20,908 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 mathsat -unsat_core_generation=3 [2020-12-02 15:35:20,956 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 03:35:20 BoogieIcfgContainer [2020-12-02 15:35:20,956 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-02 15:35:20,957 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-02 15:35:20,957 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-02 15:35:20,957 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-02 15:35:20,958 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 03:35:15" (3/4) ... [2020-12-02 15:35:20,960 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-12-02 15:35:21,012 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-12-02 15:35:21,013 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-02 15:35:21,015 INFO L168 Benchmark]: Toolchain (without parser) took 6497.06 ms. Allocated memory was 48.2 MB in the beginning and 71.3 MB in the end (delta: 23.1 MB). Free memory was 25.0 MB in the beginning and 36.4 MB in the end (delta: -11.3 MB). Peak memory consumption was 13.6 MB. Max. memory is 16.1 GB. [2020-12-02 15:35:21,015 INFO L168 Benchmark]: CDTParser took 0.33 ms. Allocated memory is still 48.2 MB. Free memory was 29.7 MB in the beginning and 29.7 MB in the end (delta: 39.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-02 15:35:21,016 INFO L168 Benchmark]: CACSL2BoogieTranslator took 403.72 ms. Allocated memory is still 48.2 MB. Free memory was 24.8 MB in the beginning and 24.4 MB in the end (delta: 439.2 kB). Peak memory consumption was 5.6 MB. Max. memory is 16.1 GB. [2020-12-02 15:35:21,017 INFO L168 Benchmark]: Boogie Procedure Inliner took 54.63 ms. Allocated memory is still 48.2 MB. Free memory was 24.4 MB in the beginning and 22.5 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-02 15:35:21,018 INFO L168 Benchmark]: Boogie Preprocessor took 54.84 ms. Allocated memory was 48.2 MB in the beginning and 58.7 MB in the end (delta: 10.5 MB). Free memory was 22.3 MB in the beginning and 42.5 MB in the end (delta: -20.1 MB). Peak memory consumption was 5.5 MB. Max. memory is 16.1 GB. [2020-12-02 15:35:21,019 INFO L168 Benchmark]: RCFGBuilder took 659.82 ms. Allocated memory is still 58.7 MB. Free memory was 42.5 MB in the beginning and 34.5 MB in the end (delta: 8.0 MB). Peak memory consumption was 16.0 MB. Max. memory is 16.1 GB. [2020-12-02 15:35:21,020 INFO L168 Benchmark]: TraceAbstraction took 5256.88 ms. Allocated memory was 58.7 MB in the beginning and 71.3 MB in the end (delta: 12.6 MB). Free memory was 34.0 MB in the beginning and 39.0 MB in the end (delta: -5.1 MB). Peak memory consumption was 7.5 MB. Max. memory is 16.1 GB. [2020-12-02 15:35:21,020 INFO L168 Benchmark]: Witness Printer took 55.95 ms. Allocated memory is still 71.3 MB. Free memory was 39.0 MB in the beginning and 36.4 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-02 15:35:21,025 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33 ms. Allocated memory is still 48.2 MB. Free memory was 29.7 MB in the beginning and 29.7 MB in the end (delta: 39.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 403.72 ms. Allocated memory is still 48.2 MB. Free memory was 24.8 MB in the beginning and 24.4 MB in the end (delta: 439.2 kB). Peak memory consumption was 5.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 54.63 ms. Allocated memory is still 48.2 MB. Free memory was 24.4 MB in the beginning and 22.5 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 54.84 ms. Allocated memory was 48.2 MB in the beginning and 58.7 MB in the end (delta: 10.5 MB). Free memory was 22.3 MB in the beginning and 42.5 MB in the end (delta: -20.1 MB). Peak memory consumption was 5.5 MB. Max. memory is 16.1 GB. * RCFGBuilder took 659.82 ms. Allocated memory is still 58.7 MB. Free memory was 42.5 MB in the beginning and 34.5 MB in the end (delta: 8.0 MB). Peak memory consumption was 16.0 MB. Max. memory is 16.1 GB. * TraceAbstraction took 5256.88 ms. Allocated memory was 58.7 MB in the beginning and 71.3 MB in the end (delta: 12.6 MB). Free memory was 34.0 MB in the beginning and 39.0 MB in the end (delta: -5.1 MB). Peak memory consumption was 7.5 MB. Max. memory is 16.1 GB. * Witness Printer took 55.95 ms. Allocated memory is still 71.3 MB. Free memory was 39.0 MB in the beginning and 36.4 MB in the end (delta: 2.6 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: 82]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L76] EXPR 0.0 [L76] EXPR -0.0 [L76] double x = -0.0; [L77] EXPR 0.0 [L77] double y = 0.0; [L21] __uint32_t msw, lsw; [L24] ieee_double_shape_type ew_u; [L25] ew_u.value = (x) [L26] EXPR ew_u.parts.msw [L26] (msw) = ew_u.parts.msw [L27] EXPR ew_u.parts.lsw [L27] (lsw) = ew_u.parts.lsw [L30-L31] COND TRUE (msw == 0x00000000 && lsw == 0x00000000) || (msw == 0x80000000 && lsw == 0x00000000) [L32] return 2; [L48] COND FALSE !(__fpclassify_double(x) == 0) [L21] __uint32_t msw, lsw; [L24] ieee_double_shape_type ew_u; [L25] ew_u.value = (x) [L26] EXPR ew_u.parts.msw [L26] (msw) = ew_u.parts.msw [L27] EXPR ew_u.parts.lsw [L27] (lsw) = ew_u.parts.lsw [L30-L31] COND TRUE (msw == 0x00000000 && lsw == 0x00000000) || (msw == 0x80000000 && lsw == 0x00000000) [L32] return 2; [L50] COND FALSE !(__fpclassify_double(y) == 0) [L53] EXPR x < y ? x : y [L53] return x < y ? x : y; [L78] double res = fmin_double(x, y); [L81] EXPR 0.0 [L81] EXPR -0.0 [L81] EXPR res == -0.0 && __signbit_double(res) == 1 [L57] __uint32_t msw; [L60] ieee_double_shape_type gh_u; [L61] gh_u.value = (x) [L62] EXPR gh_u.parts.msw [L62] (msw) = gh_u.parts.msw [L65] return (msw & 0x80000000) != 0; [L81] EXPR res == -0.0 && __signbit_double(res) == 1 [L81] COND TRUE !(res == -0.0 && __signbit_double(res) == 1) [L82] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 32 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 5.1s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 234 SDtfs, 290 SDslu, 362 SDs, 0 SdLazy, 112 SolverSat, 21 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 209 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=32occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 7 MinimizatonAttempts, 61 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 128 NumberOfCodeBlocks, 128 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 198 ConstructedInterpolants, 35 QuantifiedInterpolants, 32304 SizeOfPredicates, 27 NumberOfNonLiveVariables, 434 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...