./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/double_req_bl_1052c.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_77c40580-1260-4ec1-a9aa-ed070d99ffdd/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_77c40580-1260-4ec1-a9aa-ed070d99ffdd/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_77c40580-1260-4ec1-a9aa-ed070d99ffdd/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_77c40580-1260-4ec1-a9aa-ed070d99ffdd/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1052c.c -s /tmp/vcloud-vcloud-master/worker/run_dir_77c40580-1260-4ec1-a9aa-ed070d99ffdd/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_77c40580-1260-4ec1-a9aa-ed070d99ffdd/bin/uautomizer --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 94bd51eb56827c6c266b6ed4f7ea5182fc2e875c ..................................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_77c40580-1260-4ec1-a9aa-ed070d99ffdd/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_77c40580-1260-4ec1-a9aa-ed070d99ffdd/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_77c40580-1260-4ec1-a9aa-ed070d99ffdd/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_77c40580-1260-4ec1-a9aa-ed070d99ffdd/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1052c.c -s /tmp/vcloud-vcloud-master/worker/run_dir_77c40580-1260-4ec1-a9aa-ed070d99ffdd/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_77c40580-1260-4ec1-a9aa-ed070d99ffdd/bin/uautomizer --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 94bd51eb56827c6c266b6ed4f7ea5182fc2e875c ....................................................................................................................................................................................................................................................................................................................................................................................................................... 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-a4ecdab [2020-11-29 19:39:08,991 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 19:39:08,994 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 19:39:09,085 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 19:39:09,086 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 19:39:09,088 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 19:39:09,094 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 19:39:09,098 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 19:39:09,101 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 19:39:09,103 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 19:39:09,104 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 19:39:09,106 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 19:39:09,107 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 19:39:09,109 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 19:39:09,110 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 19:39:09,112 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 19:39:09,113 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 19:39:09,115 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 19:39:09,118 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 19:39:09,121 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 19:39:09,124 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 19:39:09,126 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 19:39:09,128 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 19:39:09,129 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 19:39:09,134 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 19:39:09,134 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 19:39:09,135 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 19:39:09,136 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 19:39:09,137 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 19:39:09,138 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 19:39:09,139 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 19:39:09,140 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 19:39:09,142 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 19:39:09,143 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 19:39:09,144 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 19:39:09,145 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 19:39:09,145 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 19:39:09,146 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 19:39:09,146 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 19:39:09,147 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 19:39:09,148 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 19:39:09,149 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_77c40580-1260-4ec1-a9aa-ed070d99ffdd/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-29 19:39:09,178 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 19:39:09,178 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 19:39:09,179 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 19:39:09,180 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 19:39:09,180 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 19:39:09,180 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 19:39:09,181 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 19:39:09,181 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 19:39:09,181 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 19:39:09,181 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 19:39:09,182 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-29 19:39:09,182 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-29 19:39:09,182 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-29 19:39:09,183 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 19:39:09,183 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 19:39:09,183 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 19:39:09,183 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-29 19:39:09,184 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 19:39:09,184 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 19:39:09,184 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-29 19:39:09,184 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-29 19:39:09,185 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 19:39:09,185 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 19:39:09,185 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-29 19:39:09,185 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-29 19:39:09,186 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 19:39:09,186 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-29 19:39:09,186 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-29 19:39:09,187 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 19:39:09,187 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:/tmp/vcloud-vcloud-master/worker/run_dir_77c40580-1260-4ec1-a9aa-ed070d99ffdd/bin/uautomizer/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_77c40580-1260-4ec1-a9aa-ed070d99ffdd/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 94bd51eb56827c6c266b6ed4f7ea5182fc2e875c [2020-11-29 19:39:09,464 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 19:39:09,511 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 19:39:09,514 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 19:39:09,516 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 19:39:09,519 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 19:39:09,520 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_77c40580-1260-4ec1-a9aa-ed070d99ffdd/bin/uautomizer/../../sv-benchmarks/c/float-newlib/double_req_bl_1052c.c [2020-11-29 19:39:09,604 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_77c40580-1260-4ec1-a9aa-ed070d99ffdd/bin/uautomizer/data/805c76f06/61691cb13d544e8692ce42874bd55c69/FLAG8eaded1ac [2020-11-29 19:39:10,195 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 19:39:10,196 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_77c40580-1260-4ec1-a9aa-ed070d99ffdd/sv-benchmarks/c/float-newlib/double_req_bl_1052c.c [2020-11-29 19:39:10,204 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_77c40580-1260-4ec1-a9aa-ed070d99ffdd/bin/uautomizer/data/805c76f06/61691cb13d544e8692ce42874bd55c69/FLAG8eaded1ac [2020-11-29 19:39:10,525 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_77c40580-1260-4ec1-a9aa-ed070d99ffdd/bin/uautomizer/data/805c76f06/61691cb13d544e8692ce42874bd55c69 [2020-11-29 19:39:10,529 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 19:39:10,530 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 19:39:10,533 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 19:39:10,533 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 19:39:10,537 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 19:39:10,538 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 07:39:10" (1/1) ... [2020-11-29 19:39:10,541 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@34e21408 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:39:10, skipping insertion in model container [2020-11-29 19:39:10,541 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 07:39:10" (1/1) ... [2020-11-29 19:39:10,550 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 19:39:10,572 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 19:39:10,856 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 19:39:10,872 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 19:39:10,935 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 19:39:10,957 INFO L208 MainTranslator]: Completed translation [2020-11-29 19:39:10,958 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:39:10 WrapperNode [2020-11-29 19:39:10,958 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 19:39:10,959 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 19:39:10,959 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 19:39:10,960 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 19:39:10,968 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:39:10" (1/1) ... [2020-11-29 19:39:10,978 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:39:10" (1/1) ... [2020-11-29 19:39:11,009 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 19:39:11,010 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 19:39:11,011 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 19:39:11,011 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 19:39:11,027 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:39:10" (1/1) ... [2020-11-29 19:39:11,028 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:39:10" (1/1) ... [2020-11-29 19:39:11,037 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:39:10" (1/1) ... [2020-11-29 19:39:11,046 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:39:10" (1/1) ... [2020-11-29 19:39:11,056 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:39:10" (1/1) ... [2020-11-29 19:39:11,062 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:39:10" (1/1) ... [2020-11-29 19:39:11,065 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:39:10" (1/1) ... [2020-11-29 19:39:11,069 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 19:39:11,070 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 19:39:11,070 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 19:39:11,071 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 19:39:11,072 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:39:10" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_77c40580-1260-4ec1-a9aa-ed070d99ffdd/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 [2020-11-29 19:39:11,160 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-29 19:39:11,160 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 19:39:11,161 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-11-29 19:39:11,161 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-29 19:39:11,161 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-11-29 19:39:11,161 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 19:39:11,162 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 19:39:11,162 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-29 19:39:11,162 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-29 19:39:11,785 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 19:39:11,786 INFO L298 CfgBuilder]: Removed 16 assume(true) statements. [2020-11-29 19:39:11,788 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:39:11 BoogieIcfgContainer [2020-11-29 19:39:11,789 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 19:39:11,791 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-29 19:39:11,791 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-29 19:39:11,796 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-29 19:39:11,796 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 07:39:10" (1/3) ... [2020-11-29 19:39:11,797 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a2ff3ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 07:39:11, skipping insertion in model container [2020-11-29 19:39:11,798 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:39:10" (2/3) ... [2020-11-29 19:39:11,798 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a2ff3ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 07:39:11, skipping insertion in model container [2020-11-29 19:39:11,799 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:39:11" (3/3) ... [2020-11-29 19:39:11,800 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1052c.c [2020-11-29 19:39:11,814 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-29 19:39:11,820 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-29 19:39:11,833 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-29 19:39:11,859 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-29 19:39:11,859 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-29 19:39:11,860 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-29 19:39:11,860 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 19:39:11,860 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 19:39:11,860 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-29 19:39:11,861 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 19:39:11,861 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-29 19:39:11,878 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states. [2020-11-29 19:39:11,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-29 19:39:11,885 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:39:11,886 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:39:11,886 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:39:11,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:39:11,894 INFO L82 PathProgramCache]: Analyzing trace with hash -1930029915, now seen corresponding path program 1 times [2020-11-29 19:39:11,905 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:39:11,905 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1248779221] [2020-11-29 19:39:11,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:39:12,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:39:12,064 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:39:12,065 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1248779221] [2020-11-29 19:39:12,066 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:39:12,066 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-29 19:39:12,067 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780555726] [2020-11-29 19:39:12,073 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-29 19:39:12,073 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:39:12,089 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-29 19:39:12,090 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-29 19:39:12,092 INFO L87 Difference]: Start difference. First operand 39 states. Second operand 2 states. [2020-11-29 19:39:12,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:39:12,116 INFO L93 Difference]: Finished difference Result 75 states and 119 transitions. [2020-11-29 19:39:12,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-29 19:39:12,117 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2020-11-29 19:39:12,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:39:12,129 INFO L225 Difference]: With dead ends: 75 [2020-11-29 19:39:12,129 INFO L226 Difference]: Without dead ends: 35 [2020-11-29 19:39:12,132 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-29 19:39:12,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-11-29 19:39:12,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2020-11-29 19:39:12,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-11-29 19:39:12,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 50 transitions. [2020-11-29 19:39:12,247 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 50 transitions. Word has length 11 [2020-11-29 19:39:12,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:39:12,248 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 50 transitions. [2020-11-29 19:39:12,248 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-29 19:39:12,251 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 50 transitions. [2020-11-29 19:39:12,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-29 19:39:12,252 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:39:12,252 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:39:12,253 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-29 19:39:12,253 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:39:12,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:39:12,255 INFO L82 PathProgramCache]: Analyzing trace with hash -1310108990, now seen corresponding path program 1 times [2020-11-29 19:39:12,255 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:39:12,256 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [23107408] [2020-11-29 19:39:12,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:39:12,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:39:12,315 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:39:12,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:39:12,355 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:39:12,384 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 19:39:12,384 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-29 19:39:12,385 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-29 19:39:12,422 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 07:39:12 BoogieIcfgContainer [2020-11-29 19:39:12,422 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-29 19:39:12,423 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 19:39:12,423 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 19:39:12,424 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 19:39:12,424 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:39:11" (3/4) ... [2020-11-29 19:39:12,428 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-29 19:39:12,428 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 19:39:12,431 INFO L168 Benchmark]: Toolchain (without parser) took 1899.03 ms. Allocated memory is still 132.1 MB. Free memory was 107.1 MB in the beginning and 101.0 MB in the end (delta: 6.1 MB). Peak memory consumption was 5.0 MB. Max. memory is 16.1 GB. [2020-11-29 19:39:12,432 INFO L168 Benchmark]: CDTParser took 0.33 ms. Allocated memory is still 88.1 MB. Free memory is still 48.4 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 19:39:12,433 INFO L168 Benchmark]: CACSL2BoogieTranslator took 425.78 ms. Allocated memory is still 132.1 MB. Free memory was 106.9 MB in the beginning and 108.3 MB in the end (delta: -1.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-29 19:39:12,434 INFO L168 Benchmark]: Boogie Procedure Inliner took 50.37 ms. Allocated memory is still 132.1 MB. Free memory was 108.3 MB in the beginning and 106.5 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 19:39:12,434 INFO L168 Benchmark]: Boogie Preprocessor took 58.72 ms. Allocated memory is still 132.1 MB. Free memory was 106.5 MB in the beginning and 104.7 MB in the end (delta: 1.8 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 19:39:12,435 INFO L168 Benchmark]: RCFGBuilder took 718.97 ms. Allocated memory is still 132.1 MB. Free memory was 104.7 MB in the beginning and 83.2 MB in the end (delta: 21.6 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. [2020-11-29 19:39:12,436 INFO L168 Benchmark]: TraceAbstraction took 631.36 ms. Allocated memory is still 132.1 MB. Free memory was 82.7 MB in the beginning and 101.6 MB in the end (delta: -18.9 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 19:39:12,437 INFO L168 Benchmark]: Witness Printer took 5.27 ms. Allocated memory is still 132.1 MB. Free memory was 101.6 MB in the beginning and 101.0 MB in the end (delta: 544.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 19:39:12,441 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 88.1 MB. Free memory is still 48.4 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 425.78 ms. Allocated memory is still 132.1 MB. Free memory was 106.9 MB in the beginning and 108.3 MB in the end (delta: -1.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 50.37 ms. Allocated memory is still 132.1 MB. Free memory was 108.3 MB in the beginning and 106.5 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 58.72 ms. Allocated memory is still 132.1 MB. Free memory was 106.5 MB in the beginning and 104.7 MB in the end (delta: 1.8 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 718.97 ms. Allocated memory is still 132.1 MB. Free memory was 104.7 MB in the beginning and 83.2 MB in the end (delta: 21.6 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. * TraceAbstraction took 631.36 ms. Allocated memory is still 132.1 MB. Free memory was 82.7 MB in the beginning and 101.6 MB in the end (delta: -18.9 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 5.27 ms. Allocated memory is still 132.1 MB. Free memory was 101.6 MB in the beginning and 101.0 MB in the end (delta: 544.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 3]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of shiftRight at line 39, overapproximation of bitwiseOr at line 40, overapproximation of someUnaryDOUBLEoperation at line 100, overapproximation of bitwiseAnd at line 27, overapproximation of someBinaryDOUBLEComparisonOperation at line 104. Possible FailurePath: [L16] static const double huge_floor = 1.0e300; VAL [huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L100] double x = -0.0; [L19] __int32_t i0, i1, j0; [L20] __uint32_t i, j; VAL [huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L22] ieee_double_shape_type ew_u; [L23] ew_u.value = (x) [L24] EXPR ew_u.parts.msw [L24] (i0) = ew_u.parts.msw [L25] EXPR ew_u.parts.lsw [L25] (i1) = ew_u.parts.lsw [L27] j0 = ((i0 >> 20) & 0x7ff) - 0x3ff VAL [huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L28] COND TRUE j0 < 20 VAL [huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L29] COND FALSE !(j0 < 0) [L39] i = (0x000fffff) >> j0 VAL [huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L40] COND TRUE ((i0 & i) | i1) == 0 [L41] return x; VAL [huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L101] double res = floor_double(x); [L104] EXPR res == -0.0 && __signbit_double(res) == 1 VAL [huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L104] COND TRUE !(res == -0.0 && __signbit_double(res) == 1) [L3] __assert_fail("0", "double_req_bl_1052c.c", 3, "reach_error") VAL [huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 39 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.5s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 53 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=39occurred 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, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 23 NumberOfCodeBlocks, 23 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 10 ConstructedInterpolants, 0 QuantifiedInterpolants, 100 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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-a4ecdab [2020-11-29 19:39:15,378 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 19:39:15,383 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 19:39:15,438 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 19:39:15,439 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 19:39:15,445 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 19:39:15,449 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 19:39:15,454 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 19:39:15,459 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 19:39:15,466 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 19:39:15,468 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 19:39:15,477 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 19:39:15,486 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 19:39:15,487 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 19:39:15,489 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 19:39:15,491 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 19:39:15,493 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 19:39:15,497 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 19:39:15,502 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 19:39:15,512 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 19:39:15,522 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 19:39:15,524 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 19:39:15,526 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 19:39:15,528 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 19:39:15,533 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 19:39:15,537 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 19:39:15,538 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 19:39:15,539 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 19:39:15,541 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 19:39:15,543 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 19:39:15,543 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 19:39:15,545 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 19:39:15,547 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 19:39:15,548 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 19:39:15,550 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 19:39:15,550 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 19:39:15,551 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 19:39:15,551 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 19:39:15,552 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 19:39:15,554 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 19:39:15,555 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 19:39:15,556 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_77c40580-1260-4ec1-a9aa-ed070d99ffdd/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-11-29 19:39:15,610 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 19:39:15,611 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 19:39:15,615 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 19:39:15,616 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 19:39:15,616 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 19:39:15,617 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 19:39:15,617 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 19:39:15,617 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 19:39:15,618 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 19:39:15,618 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-29 19:39:15,619 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-29 19:39:15,620 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-29 19:39:15,620 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-11-29 19:39:15,620 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-11-29 19:39:15,620 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 19:39:15,621 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 19:39:15,621 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 19:39:15,621 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-29 19:39:15,622 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 19:39:15,622 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 19:39:15,622 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-29 19:39:15,622 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-29 19:39:15,623 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 19:39:15,623 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 19:39:15,623 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-29 19:39:15,624 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-29 19:39:15,624 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-11-29 19:39:15,624 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-11-29 19:39:15,624 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-29 19:39:15,625 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 19:39:15,625 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-29 19:39:15,625 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:/tmp/vcloud-vcloud-master/worker/run_dir_77c40580-1260-4ec1-a9aa-ed070d99ffdd/bin/uautomizer/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_77c40580-1260-4ec1-a9aa-ed070d99ffdd/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 94bd51eb56827c6c266b6ed4f7ea5182fc2e875c [2020-11-29 19:39:16,052 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 19:39:16,082 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 19:39:16,085 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 19:39:16,087 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 19:39:16,088 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 19:39:16,089 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_77c40580-1260-4ec1-a9aa-ed070d99ffdd/bin/uautomizer/../../sv-benchmarks/c/float-newlib/double_req_bl_1052c.c [2020-11-29 19:39:16,188 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_77c40580-1260-4ec1-a9aa-ed070d99ffdd/bin/uautomizer/data/f3971af82/9521600fd4294c4cafd6d62b610ffa60/FLAG96ae9b8ad [2020-11-29 19:39:16,943 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 19:39:16,944 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_77c40580-1260-4ec1-a9aa-ed070d99ffdd/sv-benchmarks/c/float-newlib/double_req_bl_1052c.c [2020-11-29 19:39:16,954 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_77c40580-1260-4ec1-a9aa-ed070d99ffdd/bin/uautomizer/data/f3971af82/9521600fd4294c4cafd6d62b610ffa60/FLAG96ae9b8ad [2020-11-29 19:39:17,262 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_77c40580-1260-4ec1-a9aa-ed070d99ffdd/bin/uautomizer/data/f3971af82/9521600fd4294c4cafd6d62b610ffa60 [2020-11-29 19:39:17,265 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 19:39:17,267 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 19:39:17,272 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 19:39:17,272 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 19:39:17,277 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 19:39:17,279 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 07:39:17" (1/1) ... [2020-11-29 19:39:17,281 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f7c3195 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:39:17, skipping insertion in model container [2020-11-29 19:39:17,281 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 07:39:17" (1/1) ... [2020-11-29 19:39:17,291 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 19:39:17,317 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 19:39:17,541 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 19:39:17,560 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 19:39:17,608 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 19:39:17,645 INFO L208 MainTranslator]: Completed translation [2020-11-29 19:39:17,646 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:39:17 WrapperNode [2020-11-29 19:39:17,646 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 19:39:17,648 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 19:39:17,648 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 19:39:17,648 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 19:39:17,667 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:39:17" (1/1) ... [2020-11-29 19:39:17,693 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:39:17" (1/1) ... [2020-11-29 19:39:17,754 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 19:39:17,757 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 19:39:17,757 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 19:39:17,757 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 19:39:17,770 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:39:17" (1/1) ... [2020-11-29 19:39:17,770 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:39:17" (1/1) ... [2020-11-29 19:39:17,784 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:39:17" (1/1) ... [2020-11-29 19:39:17,784 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:39:17" (1/1) ... [2020-11-29 19:39:17,821 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:39:17" (1/1) ... [2020-11-29 19:39:17,831 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:39:17" (1/1) ... [2020-11-29 19:39:17,835 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:39:17" (1/1) ... [2020-11-29 19:39:17,840 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 19:39:17,842 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 19:39:17,842 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 19:39:17,842 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 19:39:17,843 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:39:17" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_77c40580-1260-4ec1-a9aa-ed070d99ffdd/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 [2020-11-29 19:39:17,926 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2020-11-29 19:39:17,927 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2020-11-29 19:39:17,927 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-11-29 19:39:17,928 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 19:39:17,928 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-11-29 19:39:17,928 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 19:39:17,928 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 19:39:17,929 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2020-11-29 19:39:17,929 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-29 19:39:19,874 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 19:39:19,875 INFO L298 CfgBuilder]: Removed 16 assume(true) statements. [2020-11-29 19:39:19,877 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:39:19 BoogieIcfgContainer [2020-11-29 19:39:19,877 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 19:39:19,879 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-29 19:39:19,880 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-29 19:39:19,883 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-29 19:39:19,884 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 07:39:17" (1/3) ... [2020-11-29 19:39:19,885 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75d08e71 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 07:39:19, skipping insertion in model container [2020-11-29 19:39:19,885 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:39:17" (2/3) ... [2020-11-29 19:39:19,886 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75d08e71 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 07:39:19, skipping insertion in model container [2020-11-29 19:39:19,886 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:39:19" (3/3) ... [2020-11-29 19:39:19,888 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1052c.c [2020-11-29 19:39:19,902 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-29 19:39:19,907 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-29 19:39:19,922 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-29 19:39:19,949 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-29 19:39:19,949 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-29 19:39:19,949 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-29 19:39:19,950 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 19:39:19,950 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 19:39:19,950 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-29 19:39:19,950 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 19:39:19,950 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-29 19:39:19,967 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states. [2020-11-29 19:39:19,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-29 19:39:19,974 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:39:19,975 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:39:19,975 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:39:19,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:39:19,981 INFO L82 PathProgramCache]: Analyzing trace with hash -1930029915, now seen corresponding path program 1 times [2020-11-29 19:39:19,992 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 19:39:19,992 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [124987098] [2020-11-29 19:39:19,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_77c40580-1260-4ec1-a9aa-ed070d99ffdd/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 [2020-11-29 19:39:20,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:39:20,140 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 1 conjunts are in the unsatisfiable core [2020-11-29 19:39:20,146 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:39:20,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:39:20,166 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-29 19:39:20,172 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:39:20,173 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [124987098] [2020-11-29 19:39:20,174 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:39:20,174 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-11-29 19:39:20,175 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109538160] [2020-11-29 19:39:20,180 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-29 19:39:20,181 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-29 19:39:20,197 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-29 19:39:20,198 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-29 19:39:20,201 INFO L87 Difference]: Start difference. First operand 39 states. Second operand 2 states. [2020-11-29 19:39:20,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:39:20,225 INFO L93 Difference]: Finished difference Result 75 states and 119 transitions. [2020-11-29 19:39:20,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-29 19:39:20,226 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2020-11-29 19:39:20,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:39:20,238 INFO L225 Difference]: With dead ends: 75 [2020-11-29 19:39:20,238 INFO L226 Difference]: Without dead ends: 35 [2020-11-29 19:39:20,242 INFO L677 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 [2020-11-29 19:39:20,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-11-29 19:39:20,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2020-11-29 19:39:20,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-11-29 19:39:20,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 50 transitions. [2020-11-29 19:39:20,284 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 50 transitions. Word has length 11 [2020-11-29 19:39:20,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:39:20,285 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 50 transitions. [2020-11-29 19:39:20,285 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-29 19:39:20,286 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 50 transitions. [2020-11-29 19:39:20,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-29 19:39:20,287 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:39:20,287 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:39:20,500 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-11-29 19:39:20,505 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:39:20,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:39:20,508 INFO L82 PathProgramCache]: Analyzing trace with hash -1310108990, now seen corresponding path program 1 times [2020-11-29 19:39:20,513 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 19:39:20,513 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [101281547] [2020-11-29 19:39:20,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_77c40580-1260-4ec1-a9aa-ed070d99ffdd/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 [2020-11-29 19:39:20,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:39:20,634 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-29 19:39:20,637 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:39:20,945 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:39:20,946 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-29 19:39:21,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:39:21,111 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [101281547] [2020-11-29 19:39:21,111 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:39:21,111 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2020-11-29 19:39:21,111 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992843651] [2020-11-29 19:39:21,113 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-29 19:39:21,113 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-29 19:39:21,115 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-29 19:39:21,115 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-11-29 19:39:21,115 INFO L87 Difference]: Start difference. First operand 35 states and 50 transitions. Second operand 8 states. [2020-11-29 19:39:21,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:39:21,787 INFO L93 Difference]: Finished difference Result 59 states and 74 transitions. [2020-11-29 19:39:21,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-29 19:39:21,788 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 12 [2020-11-29 19:39:21,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:39:21,790 INFO L225 Difference]: With dead ends: 59 [2020-11-29 19:39:21,790 INFO L226 Difference]: Without dead ends: 34 [2020-11-29 19:39:21,792 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2020-11-29 19:39:21,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-11-29 19:39:21,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 22. [2020-11-29 19:39:21,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-11-29 19:39:21,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 24 transitions. [2020-11-29 19:39:21,800 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 24 transitions. Word has length 12 [2020-11-29 19:39:21,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:39:21,801 INFO L481 AbstractCegarLoop]: Abstraction has 22 states and 24 transitions. [2020-11-29 19:39:21,801 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-29 19:39:21,801 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 24 transitions. [2020-11-29 19:39:21,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-29 19:39:21,802 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:39:21,803 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:39:22,010 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-11-29 19:39:22,011 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:39:22,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:39:22,012 INFO L82 PathProgramCache]: Analyzing trace with hash -649381144, now seen corresponding path program 1 times [2020-11-29 19:39:22,012 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 19:39:22,013 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [692380024] [2020-11-29 19:39:22,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_77c40580-1260-4ec1-a9aa-ed070d99ffdd/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 [2020-11-29 19:39:22,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:39:22,270 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 6 conjunts are in the unsatisfiable core [2020-11-29 19:39:22,272 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:39:22,370 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:39:22,371 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-29 19:39:23,379 WARN L193 SmtUtils]: Spent 395.00 ms on a formula simplification that was a NOOP. DAG size: 6 [2020-11-29 19:39:23,730 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:39:23,731 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [692380024] [2020-11-29 19:39:23,731 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:39:23,731 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2020-11-29 19:39:23,732 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639318097] [2020-11-29 19:39:23,732 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-29 19:39:23,733 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-29 19:39:23,734 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-29 19:39:23,734 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-11-29 19:39:23,734 INFO L87 Difference]: Start difference. First operand 22 states and 24 transitions. Second operand 6 states. [2020-11-29 19:39:24,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:39:24,173 INFO L93 Difference]: Finished difference Result 34 states and 36 transitions. [2020-11-29 19:39:24,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 19:39:24,185 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-11-29 19:39:24,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:39:24,186 INFO L225 Difference]: With dead ends: 34 [2020-11-29 19:39:24,186 INFO L226 Difference]: Without dead ends: 22 [2020-11-29 19:39:24,187 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-11-29 19:39:24,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2020-11-29 19:39:24,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2020-11-29 19:39:24,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-11-29 19:39:24,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 23 transitions. [2020-11-29 19:39:24,195 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 23 transitions. Word has length 15 [2020-11-29 19:39:24,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:39:24,195 INFO L481 AbstractCegarLoop]: Abstraction has 22 states and 23 transitions. [2020-11-29 19:39:24,195 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-29 19:39:24,195 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 23 transitions. [2020-11-29 19:39:24,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-29 19:39:24,196 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:39:24,197 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:39:24,410 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-11-29 19:39:24,411 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:39:24,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:39:24,411 INFO L82 PathProgramCache]: Analyzing trace with hash 461150674, now seen corresponding path program 1 times [2020-11-29 19:39:24,412 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 19:39:24,412 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1381762885] [2020-11-29 19:39:24,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_77c40580-1260-4ec1-a9aa-ed070d99ffdd/bin/uautomizer/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2020-11-29 19:39:24,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:39:24,697 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:39:24,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:39:24,983 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:39:25,045 INFO L173 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2020-11-29 19:39:25,046 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-29 19:39:25,247 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-11-29 19:39:25,290 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 07:39:25 BoogieIcfgContainer [2020-11-29 19:39:25,291 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-29 19:39:25,291 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 19:39:25,292 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 19:39:25,292 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 19:39:25,292 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:39:19" (3/4) ... [2020-11-29 19:39:25,295 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-29 19:39:25,411 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_77c40580-1260-4ec1-a9aa-ed070d99ffdd/bin/uautomizer/witness.graphml [2020-11-29 19:39:25,412 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 19:39:25,414 INFO L168 Benchmark]: Toolchain (without parser) took 8145.76 ms. Allocated memory was 50.3 MB in the beginning and 92.3 MB in the end (delta: 41.9 MB). Free memory was 26.8 MB in the beginning and 71.1 MB in the end (delta: -44.3 MB). Peak memory consumption was 27.0 MB. Max. memory is 16.1 GB. [2020-11-29 19:39:25,415 INFO L168 Benchmark]: CDTParser took 0.34 ms. Allocated memory is still 50.3 MB. Free memory was 32.2 MB in the beginning and 32.1 MB in the end (delta: 25.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 19:39:25,416 INFO L168 Benchmark]: CACSL2BoogieTranslator took 374.94 ms. Allocated memory is still 50.3 MB. Free memory was 26.6 MB in the beginning and 28.7 MB in the end (delta: -2.1 MB). Peak memory consumption was 7.2 MB. Max. memory is 16.1 GB. [2020-11-29 19:39:25,423 INFO L168 Benchmark]: Boogie Procedure Inliner took 108.12 ms. Allocated memory was 50.3 MB in the beginning and 71.3 MB in the end (delta: 21.0 MB). Free memory was 28.7 MB in the beginning and 53.3 MB in the end (delta: -24.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 19:39:25,424 INFO L168 Benchmark]: Boogie Preprocessor took 83.77 ms. Allocated memory is still 71.3 MB. Free memory was 53.3 MB in the beginning and 51.6 MB in the end (delta: 1.7 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 19:39:25,425 INFO L168 Benchmark]: RCFGBuilder took 2035.81 ms. Allocated memory is still 71.3 MB. Free memory was 51.6 MB in the beginning and 46.3 MB in the end (delta: 5.3 MB). Peak memory consumption was 20.5 MB. Max. memory is 16.1 GB. [2020-11-29 19:39:25,425 INFO L168 Benchmark]: TraceAbstraction took 5411.29 ms. Allocated memory was 71.3 MB in the beginning and 92.3 MB in the end (delta: 21.0 MB). Free memory was 45.8 MB in the beginning and 42.5 MB in the end (delta: 3.3 MB). Peak memory consumption was 24.1 MB. Max. memory is 16.1 GB. [2020-11-29 19:39:25,426 INFO L168 Benchmark]: Witness Printer took 120.72 ms. Allocated memory is still 92.3 MB. Free memory was 42.5 MB in the beginning and 71.1 MB in the end (delta: -28.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 19:39:25,430 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34 ms. Allocated memory is still 50.3 MB. Free memory was 32.2 MB in the beginning and 32.1 MB in the end (delta: 25.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 374.94 ms. Allocated memory is still 50.3 MB. Free memory was 26.6 MB in the beginning and 28.7 MB in the end (delta: -2.1 MB). Peak memory consumption was 7.2 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 108.12 ms. Allocated memory was 50.3 MB in the beginning and 71.3 MB in the end (delta: 21.0 MB). Free memory was 28.7 MB in the beginning and 53.3 MB in the end (delta: -24.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 83.77 ms. Allocated memory is still 71.3 MB. Free memory was 53.3 MB in the beginning and 51.6 MB in the end (delta: 1.7 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 2035.81 ms. Allocated memory is still 71.3 MB. Free memory was 51.6 MB in the beginning and 46.3 MB in the end (delta: 5.3 MB). Peak memory consumption was 20.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 5411.29 ms. Allocated memory was 71.3 MB in the beginning and 92.3 MB in the end (delta: 21.0 MB). Free memory was 45.8 MB in the beginning and 42.5 MB in the end (delta: 3.3 MB). Peak memory consumption was 24.1 MB. Max. memory is 16.1 GB. * Witness Printer took 120.72 ms. Allocated memory is still 92.3 MB. Free memory was 42.5 MB in the beginning and 71.1 MB in the end (delta: -28.6 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: 3]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L16] static const double huge_floor = 1.0e300; VAL [huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L100] double x = -0.0; [L19] __int32_t i0, i1, j0; [L20] __uint32_t i, j; VAL [huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L22] ieee_double_shape_type ew_u; [L23] ew_u.value = (x) [L24] EXPR ew_u.parts.msw [L24] (i0) = ew_u.parts.msw [L25] EXPR ew_u.parts.lsw [L25] (i1) = ew_u.parts.lsw [L27] j0 = ((i0 >> 20) & 0x7ff) - 0x3ff VAL [huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L28] COND TRUE j0 < 20 VAL [huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L29] COND TRUE j0 < 0 VAL [huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L30] COND TRUE huge_floor + x > 0.0 VAL [huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L31] COND FALSE !(i0 >= 0) VAL [huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L33] COND TRUE ((i0 & 0x7fffffff) | i1) != 0 [L34] i0 = 0xbff00000 [L35] i1 = 0 VAL [huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L73] ieee_double_shape_type iw_u; [L74] iw_u.parts.msw = (i0) [L75] iw_u.parts.lsw = (i1) [L76] EXPR iw_u.value [L76] (x) = iw_u.value [L78] return x; VAL [huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L101] double res = floor_double(x); [L104] EXPR res == -0.0 && __signbit_double(res) == 1 VAL [huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L104] COND TRUE !(res == -0.0 && __signbit_double(res) == 1) [L3] __assert_fail("0", "double_req_bl_1052c.c", 3, "reach_error") VAL [huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 39 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 5.3s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 1.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 87 SDtfs, 105 SDslu, 59 SDs, 0 SdLazy, 30 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 74 GetRequests, 59 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 1.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=39occurred 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, 12 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 1.9s InterpolantComputationTime, 55 NumberOfCodeBlocks, 55 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 70 ConstructedInterpolants, 5 QuantifiedInterpolants, 3734 SizeOfPredicates, 11 NumberOfNonLiveVariables, 147 ConjunctsInSsa, 15 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 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...