./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/double_req_bl_1251b.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f470102c Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_5ac7a3c1-0cba-4e47-b072-33d2dac9b106/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_5ac7a3c1-0cba-4e47-b072-33d2dac9b106/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_5ac7a3c1-0cba-4e47-b072-33d2dac9b106/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_5ac7a3c1-0cba-4e47-b072-33d2dac9b106/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1251b.c -s /tmp/vcloud-vcloud-master/worker/run_dir_5ac7a3c1-0cba-4e47-b072-33d2dac9b106/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_5ac7a3c1-0cba-4e47-b072-33d2dac9b106/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 26bba4d307ba1cab1a3fe043c826d85928a7cf56 ............................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_5ac7a3c1-0cba-4e47-b072-33d2dac9b106/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_5ac7a3c1-0cba-4e47-b072-33d2dac9b106/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_5ac7a3c1-0cba-4e47-b072-33d2dac9b106/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_5ac7a3c1-0cba-4e47-b072-33d2dac9b106/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1251b.c -s /tmp/vcloud-vcloud-master/worker/run_dir_5ac7a3c1-0cba-4e47-b072-33d2dac9b106/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_5ac7a3c1-0cba-4e47-b072-33d2dac9b106/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 26bba4d307ba1cab1a3fe043c826d85928a7cf56 ................................................................................................................................................................................................................................................................................................................................................ 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 0.1.25-f470102 [2019-12-07 13:25:25,891 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 13:25:25,892 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 13:25:25,900 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 13:25:25,900 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 13:25:25,901 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 13:25:25,902 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 13:25:25,903 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 13:25:25,904 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 13:25:25,905 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 13:25:25,905 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 13:25:25,906 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 13:25:25,906 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 13:25:25,907 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 13:25:25,908 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 13:25:25,908 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 13:25:25,909 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 13:25:25,909 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 13:25:25,911 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 13:25:25,912 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 13:25:25,913 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 13:25:25,914 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 13:25:25,915 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 13:25:25,915 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 13:25:25,917 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 13:25:25,917 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 13:25:25,917 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 13:25:25,917 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 13:25:25,918 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 13:25:25,918 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 13:25:25,918 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 13:25:25,919 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 13:25:25,919 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 13:25:25,920 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 13:25:25,920 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 13:25:25,920 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 13:25:25,921 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 13:25:25,921 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 13:25:25,921 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 13:25:25,922 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 13:25:25,922 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 13:25:25,922 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_5ac7a3c1-0cba-4e47-b072-33d2dac9b106/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-12-07 13:25:25,932 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 13:25:25,932 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 13:25:25,933 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-07 13:25:25,933 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-07 13:25:25,933 INFO L138 SettingsManager]: * Use SBE=true [2019-12-07 13:25:25,933 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 13:25:25,933 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 13:25:25,933 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-07 13:25:25,934 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 13:25:25,934 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 13:25:25,934 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-07 13:25:25,934 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 13:25:25,934 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-07 13:25:25,934 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 13:25:25,934 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 13:25:25,934 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 13:25:25,935 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-07 13:25:25,935 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 13:25:25,935 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-07 13:25:25,935 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 13:25:25,935 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 13:25:25,935 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 13:25:25,935 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 13:25:25,935 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 13:25:25,936 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-07 13:25:25,936 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-12-07 13:25:25,936 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-07 13:25:25,936 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-07 13:25:25,936 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 13:25:25,936 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_5ac7a3c1-0cba-4e47-b072-33d2dac9b106/bin/uautomizer 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(__VERIFIER_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 -> 26bba4d307ba1cab1a3fe043c826d85928a7cf56 [2019-12-07 13:25:26,034 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 13:25:26,044 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 13:25:26,046 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 13:25:26,048 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 13:25:26,048 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 13:25:26,049 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_5ac7a3c1-0cba-4e47-b072-33d2dac9b106/bin/uautomizer/../../sv-benchmarks/c/float-newlib/double_req_bl_1251b.c [2019-12-07 13:25:26,095 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_5ac7a3c1-0cba-4e47-b072-33d2dac9b106/bin/uautomizer/data/dd44450ad/8eb146c497334244a6afaf915ba2a121/FLAG1de41281e [2019-12-07 13:25:26,498 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 13:25:26,499 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_5ac7a3c1-0cba-4e47-b072-33d2dac9b106/sv-benchmarks/c/float-newlib/double_req_bl_1251b.c [2019-12-07 13:25:26,503 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_5ac7a3c1-0cba-4e47-b072-33d2dac9b106/bin/uautomizer/data/dd44450ad/8eb146c497334244a6afaf915ba2a121/FLAG1de41281e [2019-12-07 13:25:26,871 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_5ac7a3c1-0cba-4e47-b072-33d2dac9b106/bin/uautomizer/data/dd44450ad/8eb146c497334244a6afaf915ba2a121 [2019-12-07 13:25:26,874 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 13:25:26,875 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 13:25:26,875 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 13:25:26,875 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 13:25:26,878 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 13:25:26,878 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 01:25:26" (1/1) ... [2019-12-07 13:25:26,880 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2cd23685 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:25:26, skipping insertion in model container [2019-12-07 13:25:26,881 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 01:25:26" (1/1) ... [2019-12-07 13:25:26,886 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 13:25:26,898 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 13:25:27,037 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 13:25:27,040 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 13:25:27,060 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 13:25:27,076 INFO L208 MainTranslator]: Completed translation [2019-12-07 13:25:27,076 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:25:27 WrapperNode [2019-12-07 13:25:27,076 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 13:25:27,077 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 13:25:27,077 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 13:25:27,077 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 13:25:27,083 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:25:27" (1/1) ... [2019-12-07 13:25:27,089 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:25:27" (1/1) ... [2019-12-07 13:25:27,106 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 13:25:27,106 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 13:25:27,106 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 13:25:27,106 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 13:25:27,112 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:25:27" (1/1) ... [2019-12-07 13:25:27,112 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:25:27" (1/1) ... [2019-12-07 13:25:27,114 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:25:27" (1/1) ... [2019-12-07 13:25:27,114 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:25:27" (1/1) ... [2019-12-07 13:25:27,119 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:25:27" (1/1) ... [2019-12-07 13:25:27,122 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:25:27" (1/1) ... [2019-12-07 13:25:27,123 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:25:27" (1/1) ... [2019-12-07 13:25:27,125 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 13:25:27,125 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 13:25:27,125 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 13:25:27,125 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 13:25:27,126 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:25:27" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5ac7a3c1-0cba-4e47-b072-33d2dac9b106/bin/uautomizer/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 [2019-12-07 13:25:27,163 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-12-07 13:25:27,163 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2019-12-07 13:25:27,163 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 13:25:27,163 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 13:25:27,163 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-12-07 13:25:27,163 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-12-07 13:25:27,342 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 13:25:27,342 INFO L287 CfgBuilder]: Removed 16 assume(true) statements. [2019-12-07 13:25:27,343 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 01:25:27 BoogieIcfgContainer [2019-12-07 13:25:27,343 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 13:25:27,344 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-07 13:25:27,344 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-07 13:25:27,346 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-07 13:25:27,346 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 01:25:26" (1/3) ... [2019-12-07 13:25:27,346 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e8c4607 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 01:25:27, skipping insertion in model container [2019-12-07 13:25:27,346 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:25:27" (2/3) ... [2019-12-07 13:25:27,347 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e8c4607 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 01:25:27, skipping insertion in model container [2019-12-07 13:25:27,347 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 01:25:27" (3/3) ... [2019-12-07 13:25:27,348 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1251b.c [2019-12-07 13:25:27,354 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-07 13:25:27,358 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-12-07 13:25:27,365 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-12-07 13:25:27,380 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-07 13:25:27,380 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-07 13:25:27,381 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-07 13:25:27,381 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 13:25:27,381 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 13:25:27,381 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-07 13:25:27,381 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 13:25:27,381 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-07 13:25:27,390 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states. [2019-12-07 13:25:27,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-12-07 13:25:27,394 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 13:25:27,395 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 13:25:27,395 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 13:25:27,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 13:25:27,399 INFO L82 PathProgramCache]: Analyzing trace with hash -124750094, now seen corresponding path program 1 times [2019-12-07 13:25:27,404 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 13:25:27,404 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [642675974] [2019-12-07 13:25:27,404 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 13:25:27,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:25:27,483 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 13:25:27,483 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [642675974] [2019-12-07 13:25:27,483 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 13:25:27,484 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-07 13:25:27,484 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212505417] [2019-12-07 13:25:27,487 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-12-07 13:25:27,487 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 13:25:27,495 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-12-07 13:25:27,496 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-12-07 13:25:27,497 INFO L87 Difference]: Start difference. First operand 30 states. Second operand 2 states. [2019-12-07 13:25:27,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 13:25:27,509 INFO L93 Difference]: Finished difference Result 56 states and 87 transitions. [2019-12-07 13:25:27,509 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-12-07 13:25:27,510 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2019-12-07 13:25:27,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 13:25:27,516 INFO L225 Difference]: With dead ends: 56 [2019-12-07 13:25:27,516 INFO L226 Difference]: Without dead ends: 26 [2019-12-07 13:25:27,518 INFO L630 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 [2019-12-07 13:25:27,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2019-12-07 13:25:27,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2019-12-07 13:25:27,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2019-12-07 13:25:27,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 36 transitions. [2019-12-07 13:25:27,540 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 36 transitions. Word has length 11 [2019-12-07 13:25:27,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 13:25:27,540 INFO L462 AbstractCegarLoop]: Abstraction has 26 states and 36 transitions. [2019-12-07 13:25:27,541 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-12-07 13:25:27,541 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 36 transitions. [2019-12-07 13:25:27,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-12-07 13:25:27,541 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 13:25:27,541 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 13:25:27,541 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 13:25:27,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 13:25:27,542 INFO L82 PathProgramCache]: Analyzing trace with hash -1352831344, now seen corresponding path program 1 times [2019-12-07 13:25:27,542 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 13:25:27,542 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [234843966] [2019-12-07 13:25:27,542 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 13:25:27,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:25:27,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 13:25:27,591 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [234843966] [2019-12-07 13:25:27,591 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 13:25:27,591 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-12-07 13:25:27,591 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918074901] [2019-12-07 13:25:27,592 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-07 13:25:27,592 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 13:25:27,592 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 13:25:27,593 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-07 13:25:27,593 INFO L87 Difference]: Start difference. First operand 26 states and 36 transitions. Second operand 4 states. [2019-12-07 13:25:27,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 13:25:27,630 INFO L93 Difference]: Finished difference Result 40 states and 51 transitions. [2019-12-07 13:25:27,630 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 13:25:27,630 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2019-12-07 13:25:27,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 13:25:27,631 INFO L225 Difference]: With dead ends: 40 [2019-12-07 13:25:27,631 INFO L226 Difference]: Without dead ends: 36 [2019-12-07 13:25:27,632 INFO L630 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 [2019-12-07 13:25:27,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2019-12-07 13:25:27,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 28. [2019-12-07 13:25:27,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2019-12-07 13:25:27,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 38 transitions. [2019-12-07 13:25:27,636 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 38 transitions. Word has length 12 [2019-12-07 13:25:27,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 13:25:27,636 INFO L462 AbstractCegarLoop]: Abstraction has 28 states and 38 transitions. [2019-12-07 13:25:27,636 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-07 13:25:27,636 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 38 transitions. [2019-12-07 13:25:27,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-12-07 13:25:27,637 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 13:25:27,637 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 13:25:27,637 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 13:25:27,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 13:25:27,638 INFO L82 PathProgramCache]: Analyzing trace with hash 1045511114, now seen corresponding path program 1 times [2019-12-07 13:25:27,638 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 13:25:27,638 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416983203] [2019-12-07 13:25:27,638 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 13:25:27,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:25:27,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 13:25:27,674 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [416983203] [2019-12-07 13:25:27,674 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 13:25:27,675 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-12-07 13:25:27,675 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509245649] [2019-12-07 13:25:27,675 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-07 13:25:27,675 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 13:25:27,675 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 13:25:27,675 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-07 13:25:27,675 INFO L87 Difference]: Start difference. First operand 28 states and 38 transitions. Second operand 4 states. [2019-12-07 13:25:27,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 13:25:27,705 INFO L93 Difference]: Finished difference Result 42 states and 53 transitions. [2019-12-07 13:25:27,705 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 13:25:27,705 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2019-12-07 13:25:27,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 13:25:27,706 INFO L225 Difference]: With dead ends: 42 [2019-12-07 13:25:27,706 INFO L226 Difference]: Without dead ends: 38 [2019-12-07 13:25:27,706 INFO L630 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 [2019-12-07 13:25:27,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2019-12-07 13:25:27,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 28. [2019-12-07 13:25:27,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2019-12-07 13:25:27,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 38 transitions. [2019-12-07 13:25:27,711 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 38 transitions. Word has length 15 [2019-12-07 13:25:27,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 13:25:27,712 INFO L462 AbstractCegarLoop]: Abstraction has 28 states and 38 transitions. [2019-12-07 13:25:27,712 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-07 13:25:27,712 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 38 transitions. [2019-12-07 13:25:27,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-12-07 13:25:27,712 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 13:25:27,712 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 13:25:27,713 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 13:25:27,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 13:25:27,713 INFO L82 PathProgramCache]: Analyzing trace with hash 1102769416, now seen corresponding path program 1 times [2019-12-07 13:25:27,713 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 13:25:27,713 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [867975083] [2019-12-07 13:25:27,713 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 13:25:27,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 13:25:27,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 13:25:27,768 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 13:25:27,768 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-12-07 13:25:27,786 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 01:25:27 BoogieIcfgContainer [2019-12-07 13:25:27,786 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-07 13:25:27,787 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 13:25:27,787 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 13:25:27,787 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 13:25:27,787 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 01:25:27" (3/4) ... [2019-12-07 13:25:27,789 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-12-07 13:25:27,789 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 13:25:27,791 INFO L168 Benchmark]: Toolchain (without parser) took 916.03 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 93.8 MB). Free memory was 945.2 MB in the beginning and 1.0 GB in the end (delta: -65.7 MB). Peak memory consumption was 28.1 MB. Max. memory is 11.5 GB. [2019-12-07 13:25:27,791 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 1.0 GB. Free memory is still 961.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 13:25:27,792 INFO L168 Benchmark]: CACSL2BoogieTranslator took 201.40 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 93.8 MB). Free memory was 945.2 MB in the beginning and 1.1 GB in the end (delta: -143.5 MB). Peak memory consumption was 23.2 MB. Max. memory is 11.5 GB. [2019-12-07 13:25:27,792 INFO L168 Benchmark]: Boogie Procedure Inliner took 28.76 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 11.5 GB. [2019-12-07 13:25:27,793 INFO L168 Benchmark]: Boogie Preprocessor took 19.16 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-12-07 13:25:27,793 INFO L168 Benchmark]: RCFGBuilder took 218.04 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 21.9 MB). Peak memory consumption was 21.9 MB. Max. memory is 11.5 GB. [2019-12-07 13:25:27,793 INFO L168 Benchmark]: TraceAbstraction took 442.52 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 49.4 MB). Peak memory consumption was 49.4 MB. Max. memory is 11.5 GB. [2019-12-07 13:25:27,794 INFO L168 Benchmark]: Witness Printer took 2.93 ms. Allocated memory is still 1.1 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 13:25:27,796 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 1.0 GB. Free memory is still 961.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 201.40 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 93.8 MB). Free memory was 945.2 MB in the beginning and 1.1 GB in the end (delta: -143.5 MB). Peak memory consumption was 23.2 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 28.76 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 19.16 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 218.04 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 21.9 MB). Peak memory consumption was 21.9 MB. Max. memory is 11.5 GB. * TraceAbstraction took 442.52 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 49.4 MB). Peak memory consumption was 49.4 MB. Max. memory is 11.5 GB. * Witness Printer took 2.93 ms. Allocated memory is still 1.1 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 78]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 77, overapproximation of someBinaryArithmeticDOUBLEoperation at line 65. Possible FailurePath: [L64] double x = __VERIFIER_nondet_double(); [L65] double y = 0.0 / 0.0; [L16] return x != x; [L72] COND TRUE !isnan_double(x) [L27] __uint32_t msw, lsw; [L30] ieee_double_shape_type ew_u; [L31] ew_u.value = (x) [L32] EXPR ew_u.parts.msw [L32] (msw) = ew_u.parts.msw [L33] EXPR ew_u.parts.lsw [L33] (lsw) = ew_u.parts.lsw [L36-L37] COND FALSE !((msw == 0x00000000 && lsw == 0x00000000) || (msw == 0x80000000 && lsw == 0x00000000)) [L39-L40] COND FALSE !((msw >= 0x00100000 && msw <= 0x7fefffff) || (msw >= 0x80100000 && msw <= 0xffefffff)) [L42-L43] COND FALSE !(( msw <= 0x000fffff) || (msw >= 0x80000000 && msw <= 0x800fffff)) [L46-L47] COND FALSE !((msw == 0x7ff00000 && lsw == 0x00000000) || (msw == 0xfff00000 && lsw == 0x00000000)) [L50] return 0; [L55] COND TRUE __fpclassify_double(x) == 0 [L56] return y; [L74] double res = fmax_double(x, y); [L77] COND TRUE res != x [L78] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 30 locations, 1 error locations. Result: UNSAFE, OverallTime: 0.3s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 113 SDtfs, 20 SDslu, 112 SDs, 0 SdLazy, 30 SolverSat, 12 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=30occurred 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, 3 MinimizatonAttempts, 18 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 53 NumberOfCodeBlocks, 53 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 35 ConstructedInterpolants, 0 QuantifiedInterpolants, 517 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.25-f470102 [2019-12-07 13:25:29,258 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 13:25:29,259 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 13:25:29,267 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 13:25:29,267 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 13:25:29,268 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 13:25:29,269 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 13:25:29,270 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 13:25:29,272 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 13:25:29,272 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 13:25:29,273 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 13:25:29,274 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 13:25:29,274 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 13:25:29,275 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 13:25:29,275 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 13:25:29,276 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 13:25:29,277 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 13:25:29,277 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 13:25:29,279 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 13:25:29,280 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 13:25:29,281 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 13:25:29,282 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 13:25:29,283 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 13:25:29,283 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 13:25:29,285 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 13:25:29,286 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 13:25:29,286 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 13:25:29,286 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 13:25:29,287 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 13:25:29,287 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 13:25:29,287 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 13:25:29,288 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 13:25:29,288 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 13:25:29,289 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 13:25:29,290 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 13:25:29,290 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 13:25:29,290 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 13:25:29,290 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 13:25:29,291 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 13:25:29,291 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 13:25:29,292 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 13:25:29,292 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_5ac7a3c1-0cba-4e47-b072-33d2dac9b106/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2019-12-07 13:25:29,302 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 13:25:29,302 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 13:25:29,303 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-07 13:25:29,303 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-07 13:25:29,303 INFO L138 SettingsManager]: * Use SBE=true [2019-12-07 13:25:29,304 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 13:25:29,304 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 13:25:29,304 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 13:25:29,304 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 13:25:29,304 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-07 13:25:29,304 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 13:25:29,304 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-07 13:25:29,305 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-12-07 13:25:29,305 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-12-07 13:25:29,305 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 13:25:29,305 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 13:25:29,305 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 13:25:29,305 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-07 13:25:29,305 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 13:25:29,305 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-07 13:25:29,306 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 13:25:29,306 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 13:25:29,306 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 13:25:29,306 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 13:25:29,306 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 13:25:29,306 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-07 13:25:29,306 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2019-12-07 13:25:29,306 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-12-07 13:25:29,307 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-07 13:25:29,307 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 13:25:29,307 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-12-07 13:25:29,307 INFO L138 SettingsManager]: * Logic for external solver=AUFBV Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_5ac7a3c1-0cba-4e47-b072-33d2dac9b106/bin/uautomizer 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(__VERIFIER_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 -> 26bba4d307ba1cab1a3fe043c826d85928a7cf56 [2019-12-07 13:25:29,481 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 13:25:29,489 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 13:25:29,491 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 13:25:29,492 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 13:25:29,493 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 13:25:29,493 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_5ac7a3c1-0cba-4e47-b072-33d2dac9b106/bin/uautomizer/../../sv-benchmarks/c/float-newlib/double_req_bl_1251b.c [2019-12-07 13:25:29,530 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_5ac7a3c1-0cba-4e47-b072-33d2dac9b106/bin/uautomizer/data/cd53ae382/520335a46d9e4d5aa5ef9cc1e7b56e59/FLAG05bad8d83 [2019-12-07 13:25:29,897 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 13:25:29,898 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_5ac7a3c1-0cba-4e47-b072-33d2dac9b106/sv-benchmarks/c/float-newlib/double_req_bl_1251b.c [2019-12-07 13:25:29,902 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_5ac7a3c1-0cba-4e47-b072-33d2dac9b106/bin/uautomizer/data/cd53ae382/520335a46d9e4d5aa5ef9cc1e7b56e59/FLAG05bad8d83 [2019-12-07 13:25:30,307 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_5ac7a3c1-0cba-4e47-b072-33d2dac9b106/bin/uautomizer/data/cd53ae382/520335a46d9e4d5aa5ef9cc1e7b56e59 [2019-12-07 13:25:30,309 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 13:25:30,310 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 13:25:30,311 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 13:25:30,311 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 13:25:30,313 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 13:25:30,314 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 01:25:30" (1/1) ... [2019-12-07 13:25:30,316 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7673eb84 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:25:30, skipping insertion in model container [2019-12-07 13:25:30,316 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 01:25:30" (1/1) ... [2019-12-07 13:25:30,321 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 13:25:30,333 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 13:25:30,439 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 13:25:30,443 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 13:25:30,459 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 13:25:30,477 INFO L208 MainTranslator]: Completed translation [2019-12-07 13:25:30,477 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:25:30 WrapperNode [2019-12-07 13:25:30,477 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 13:25:30,478 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 13:25:30,478 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 13:25:30,478 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 13:25:30,483 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:25:30" (1/1) ... [2019-12-07 13:25:30,490 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:25:30" (1/1) ... [2019-12-07 13:25:30,535 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 13:25:30,536 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 13:25:30,536 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 13:25:30,536 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 13:25:30,542 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:25:30" (1/1) ... [2019-12-07 13:25:30,542 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:25:30" (1/1) ... [2019-12-07 13:25:30,545 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:25:30" (1/1) ... [2019-12-07 13:25:30,545 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:25:30" (1/1) ... [2019-12-07 13:25:30,551 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:25:30" (1/1) ... [2019-12-07 13:25:30,555 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:25:30" (1/1) ... [2019-12-07 13:25:30,556 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:25:30" (1/1) ... [2019-12-07 13:25:30,559 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 13:25:30,559 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 13:25:30,559 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 13:25:30,559 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 13:25:30,560 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:25:30" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5ac7a3c1-0cba-4e47-b072-33d2dac9b106/bin/uautomizer/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 [2019-12-07 13:25:30,600 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2019-12-07 13:25:30,600 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-12-07 13:25:30,600 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2019-12-07 13:25:30,600 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 13:25:30,600 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 13:25:30,600 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-12-07 13:25:30,837 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 13:25:30,837 INFO L287 CfgBuilder]: Removed 16 assume(true) statements. [2019-12-07 13:25:30,838 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 01:25:30 BoogieIcfgContainer [2019-12-07 13:25:30,838 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 13:25:30,839 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-07 13:25:30,839 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-07 13:25:30,841 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-07 13:25:30,841 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 01:25:30" (1/3) ... [2019-12-07 13:25:30,841 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9cf270e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 01:25:30, skipping insertion in model container [2019-12-07 13:25:30,841 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:25:30" (2/3) ... [2019-12-07 13:25:30,842 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9cf270e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 01:25:30, skipping insertion in model container [2019-12-07 13:25:30,842 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 01:25:30" (3/3) ... [2019-12-07 13:25:30,843 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1251b.c [2019-12-07 13:25:30,849 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-07 13:25:30,853 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-12-07 13:25:30,860 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-12-07 13:25:30,874 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-07 13:25:30,874 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-07 13:25:30,875 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-07 13:25:30,875 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 13:25:30,875 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 13:25:30,875 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-07 13:25:30,875 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 13:25:30,875 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-07 13:25:30,884 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states. [2019-12-07 13:25:30,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-12-07 13:25:30,887 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 13:25:30,888 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 13:25:30,888 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 13:25:30,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 13:25:30,892 INFO L82 PathProgramCache]: Analyzing trace with hash -124750094, now seen corresponding path program 1 times [2019-12-07 13:25:30,899 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-12-07 13:25:30,899 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1783774820] [2019-12-07 13:25:30,900 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5ac7a3c1-0cba-4e47-b072-33d2dac9b106/bin/uautomizer/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 [2019-12-07 13:25:30,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:25:30,974 INFO L264 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 1 conjunts are in the unsatisfiable core [2019-12-07 13:25:30,978 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 13:25:30,987 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 13:25:30,987 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 13:25:30,990 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 13:25:30,991 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1783774820] [2019-12-07 13:25:30,991 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-07 13:25:30,992 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-12-07 13:25:30,992 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349132058] [2019-12-07 13:25:30,995 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-12-07 13:25:30,996 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-12-07 13:25:31,004 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-12-07 13:25:31,004 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-12-07 13:25:31,005 INFO L87 Difference]: Start difference. First operand 30 states. Second operand 2 states. [2019-12-07 13:25:31,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 13:25:31,019 INFO L93 Difference]: Finished difference Result 56 states and 87 transitions. [2019-12-07 13:25:31,019 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-12-07 13:25:31,020 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2019-12-07 13:25:31,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 13:25:31,028 INFO L225 Difference]: With dead ends: 56 [2019-12-07 13:25:31,028 INFO L226 Difference]: Without dead ends: 26 [2019-12-07 13:25:31,030 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-12-07 13:25:31,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2019-12-07 13:25:31,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2019-12-07 13:25:31,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2019-12-07 13:25:31,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 36 transitions. [2019-12-07 13:25:31,055 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 36 transitions. Word has length 11 [2019-12-07 13:25:31,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 13:25:31,055 INFO L462 AbstractCegarLoop]: Abstraction has 26 states and 36 transitions. [2019-12-07 13:25:31,055 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-12-07 13:25:31,055 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 36 transitions. [2019-12-07 13:25:31,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-12-07 13:25:31,056 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 13:25:31,056 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 13:25:31,256 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2019-12-07 13:25:31,256 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 13:25:31,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 13:25:31,257 INFO L82 PathProgramCache]: Analyzing trace with hash -1352831344, now seen corresponding path program 1 times [2019-12-07 13:25:31,257 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-12-07 13:25:31,257 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [790746728] [2019-12-07 13:25:31,258 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5ac7a3c1-0cba-4e47-b072-33d2dac9b106/bin/uautomizer/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 [2019-12-07 13:25:31,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:25:31,334 INFO L264 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 3 conjunts are in the unsatisfiable core [2019-12-07 13:25:31,335 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 13:25:31,354 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 13:25:31,354 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 13:25:31,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 13:25:31,368 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [790746728] [2019-12-07 13:25:31,368 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-07 13:25:31,368 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2019-12-07 13:25:31,368 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233924736] [2019-12-07 13:25:31,370 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-12-07 13:25:31,370 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-12-07 13:25:31,370 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-12-07 13:25:31,370 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-12-07 13:25:31,371 INFO L87 Difference]: Start difference. First operand 26 states and 36 transitions. Second operand 6 states. [2019-12-07 13:25:31,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 13:25:31,451 INFO L93 Difference]: Finished difference Result 50 states and 63 transitions. [2019-12-07 13:25:31,452 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-12-07 13:25:31,452 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2019-12-07 13:25:31,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 13:25:31,453 INFO L225 Difference]: With dead ends: 50 [2019-12-07 13:25:31,453 INFO L226 Difference]: Without dead ends: 46 [2019-12-07 13:25:31,454 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2019-12-07 13:25:31,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2019-12-07 13:25:31,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 28. [2019-12-07 13:25:31,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2019-12-07 13:25:31,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 38 transitions. [2019-12-07 13:25:31,459 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 38 transitions. Word has length 12 [2019-12-07 13:25:31,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 13:25:31,459 INFO L462 AbstractCegarLoop]: Abstraction has 28 states and 38 transitions. [2019-12-07 13:25:31,460 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-12-07 13:25:31,460 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 38 transitions. [2019-12-07 13:25:31,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-12-07 13:25:31,460 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 13:25:31,461 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 13:25:31,661 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2019-12-07 13:25:31,662 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 13:25:31,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 13:25:31,663 INFO L82 PathProgramCache]: Analyzing trace with hash 1102769416, now seen corresponding path program 1 times [2019-12-07 13:25:31,665 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-12-07 13:25:31,666 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2145555153] [2019-12-07 13:25:31,666 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5ac7a3c1-0cba-4e47-b072-33d2dac9b106/bin/uautomizer/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 [2019-12-07 13:25:31,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 13:25:31,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 13:25:31,909 INFO L174 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2019-12-07 13:25:31,909 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-12-07 13:25:32,110 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2019-12-07 13:25:32,133 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 01:25:32 BoogieIcfgContainer [2019-12-07 13:25:32,133 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-07 13:25:32,133 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 13:25:32,133 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 13:25:32,134 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 13:25:32,134 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 01:25:30" (3/4) ... [2019-12-07 13:25:32,135 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-12-07 13:25:32,168 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_5ac7a3c1-0cba-4e47-b072-33d2dac9b106/bin/uautomizer/witness.graphml [2019-12-07 13:25:32,168 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 13:25:32,170 INFO L168 Benchmark]: Toolchain (without parser) took 1859.05 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 123.7 MB). Free memory was 952.4 MB in the beginning and 1.0 GB in the end (delta: -53.5 MB). Peak memory consumption was 70.2 MB. Max. memory is 11.5 GB. [2019-12-07 13:25:32,170 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 981.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 13:25:32,170 INFO L168 Benchmark]: CACSL2BoogieTranslator took 166.45 ms. Allocated memory is still 1.0 GB. Free memory was 952.4 MB in the beginning and 936.3 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 11.5 GB. [2019-12-07 13:25:32,171 INFO L168 Benchmark]: Boogie Procedure Inliner took 57.90 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 123.7 MB). Free memory was 936.3 MB in the beginning and 1.1 GB in the end (delta: -170.3 MB). Peak memory consumption was 10.2 MB. Max. memory is 11.5 GB. [2019-12-07 13:25:32,171 INFO L168 Benchmark]: Boogie Preprocessor took 23.09 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 13:25:32,171 INFO L168 Benchmark]: RCFGBuilder took 279.05 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 24.5 MB). Peak memory consumption was 24.5 MB. Max. memory is 11.5 GB. [2019-12-07 13:25:32,172 INFO L168 Benchmark]: TraceAbstraction took 1294.39 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 76.2 MB). Peak memory consumption was 76.2 MB. Max. memory is 11.5 GB. [2019-12-07 13:25:32,172 INFO L168 Benchmark]: Witness Printer took 34.96 ms. Allocated memory is still 1.2 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 13:25:32,174 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 981.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 166.45 ms. Allocated memory is still 1.0 GB. Free memory was 952.4 MB in the beginning and 936.3 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 57.90 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 123.7 MB). Free memory was 936.3 MB in the beginning and 1.1 GB in the end (delta: -170.3 MB). Peak memory consumption was 10.2 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 23.09 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 279.05 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 24.5 MB). Peak memory consumption was 24.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1294.39 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 76.2 MB). Peak memory consumption was 76.2 MB. Max. memory is 11.5 GB. * Witness Printer took 34.96 ms. Allocated memory is still 1.2 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 78]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L64] double x = __VERIFIER_nondet_double(); [L65] double y = 0.0 / 0.0; [L16] return x != x; [L72] COND TRUE !isnan_double(x) [L27] __uint32_t msw, lsw; [L30] ieee_double_shape_type ew_u; [L31] ew_u.value = (x) [L32] EXPR ew_u.parts.msw [L32] (msw) = ew_u.parts.msw [L33] EXPR ew_u.parts.lsw [L33] (lsw) = ew_u.parts.lsw [L36-L37] COND FALSE !((msw == 0x00000000 && lsw == 0x00000000) || (msw == 0x80000000 && lsw == 0x00000000)) [L39-L40] COND FALSE !((msw >= 0x00100000 && msw <= 0x7fefffff) || (msw >= 0x80100000 && msw <= 0xffefffff)) [L42-L43] COND FALSE !(( msw <= 0x000fffff) || (msw >= 0x80000000 && msw <= 0x800fffff)) [L46-L47] COND FALSE !((msw == 0x7ff00000 && lsw == 0x00000000) || (msw == 0xfff00000 && lsw == 0x00000000)) [L50] return 0; [L55] COND TRUE __fpclassify_double(x) == 0 [L56] return y; [L74] double res = fmax_double(x, y); [L77] COND TRUE res != x [L78] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 30 locations, 1 error locations. Result: UNSAFE, OverallTime: 1.2s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 77 SDtfs, 30 SDslu, 64 SDs, 0 SdLazy, 23 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 44 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=30occurred 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, 2 MinimizatonAttempts, 18 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 38 NumberOfCodeBlocks, 38 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 42 ConstructedInterpolants, 0 QuantifiedInterpolants, 552 SizeOfPredicates, 1 NumberOfNonLiveVariables, 71 ConjunctsInSsa, 4 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...