./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/float_req_bl_1381.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_72d48776-8424-422d-ade4-52cbc6efee28/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_72d48776-8424-422d-ade4-52cbc6efee28/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_72d48776-8424-422d-ade4-52cbc6efee28/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_72d48776-8424-422d-ade4-52cbc6efee28/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1381.c -s /tmp/vcloud-vcloud-master/worker/run_dir_72d48776-8424-422d-ade4-52cbc6efee28/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_72d48776-8424-422d-ade4-52cbc6efee28/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 fd0f4a3f6b8eda4abc4e025ff55c76ee8ad620a8 ............................................................................................................................................................................................................................................................................................. 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_72d48776-8424-422d-ade4-52cbc6efee28/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_72d48776-8424-422d-ade4-52cbc6efee28/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_72d48776-8424-422d-ade4-52cbc6efee28/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_72d48776-8424-422d-ade4-52cbc6efee28/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1381.c -s /tmp/vcloud-vcloud-master/worker/run_dir_72d48776-8424-422d-ade4-52cbc6efee28/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_72d48776-8424-422d-ade4-52cbc6efee28/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 fd0f4a3f6b8eda4abc4e025ff55c76ee8ad620a8 ................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-30 00:38:32,023 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 00:38:32,026 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 00:38:32,127 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 00:38:32,128 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 00:38:32,130 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 00:38:32,132 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 00:38:32,136 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 00:38:32,152 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 00:38:32,154 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 00:38:32,156 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 00:38:32,158 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 00:38:32,159 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 00:38:32,161 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 00:38:32,163 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 00:38:32,166 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 00:38:32,168 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 00:38:32,170 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 00:38:32,173 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 00:38:32,176 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 00:38:32,178 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 00:38:32,180 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 00:38:32,182 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 00:38:32,184 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 00:38:32,188 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 00:38:32,189 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 00:38:32,190 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 00:38:32,191 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 00:38:32,192 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 00:38:32,194 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 00:38:32,195 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 00:38:32,196 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 00:38:32,198 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 00:38:32,199 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 00:38:32,201 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 00:38:32,201 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 00:38:32,202 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 00:38:32,203 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 00:38:32,203 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 00:38:32,205 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 00:38:32,206 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 00:38:32,207 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_72d48776-8424-422d-ade4-52cbc6efee28/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-30 00:38:32,237 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 00:38:32,247 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 00:38:32,249 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-30 00:38:32,249 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-30 00:38:32,249 INFO L138 SettingsManager]: * Use SBE=true [2020-11-30 00:38:32,250 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 00:38:32,250 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-30 00:38:32,250 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-30 00:38:32,251 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-30 00:38:32,251 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 00:38:32,251 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-30 00:38:32,251 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-30 00:38:32,252 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-30 00:38:32,252 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-30 00:38:32,252 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-30 00:38:32,253 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 00:38:32,253 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-30 00:38:32,253 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 00:38:32,254 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-30 00:38:32,254 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-30 00:38:32,254 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-30 00:38:32,254 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 00:38:32,255 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 00:38:32,255 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-30 00:38:32,255 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-30 00:38:32,256 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-30 00:38:32,256 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-30 00:38:32,256 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-30 00:38:32,257 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 00:38:32,257 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_72d48776-8424-422d-ade4-52cbc6efee28/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_72d48776-8424-422d-ade4-52cbc6efee28/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fd0f4a3f6b8eda4abc4e025ff55c76ee8ad620a8 [2020-11-30 00:38:32,566 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 00:38:32,608 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 00:38:32,613 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 00:38:32,615 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 00:38:32,618 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 00:38:32,619 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_72d48776-8424-422d-ade4-52cbc6efee28/bin/uautomizer/../../sv-benchmarks/c/float-newlib/float_req_bl_1381.c [2020-11-30 00:38:32,732 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_72d48776-8424-422d-ade4-52cbc6efee28/bin/uautomizer/data/e43339676/2d005672ca764a76a0a90ed73c9899cd/FLAG268182849 [2020-11-30 00:38:33,503 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 00:38:33,505 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_72d48776-8424-422d-ade4-52cbc6efee28/sv-benchmarks/c/float-newlib/float_req_bl_1381.c [2020-11-30 00:38:33,521 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_72d48776-8424-422d-ade4-52cbc6efee28/bin/uautomizer/data/e43339676/2d005672ca764a76a0a90ed73c9899cd/FLAG268182849 [2020-11-30 00:38:33,844 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_72d48776-8424-422d-ade4-52cbc6efee28/bin/uautomizer/data/e43339676/2d005672ca764a76a0a90ed73c9899cd [2020-11-30 00:38:33,848 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 00:38:33,852 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-30 00:38:33,859 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 00:38:33,860 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 00:38:33,864 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 00:38:33,865 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 12:38:33" (1/1) ... [2020-11-30 00:38:33,868 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@31ba0bab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:38:33, skipping insertion in model container [2020-11-30 00:38:33,868 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 12:38:33" (1/1) ... [2020-11-30 00:38:33,879 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 00:38:33,900 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 00:38:34,177 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 00:38:34,198 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 00:38:34,249 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 00:38:34,272 INFO L208 MainTranslator]: Completed translation [2020-11-30 00:38:34,273 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:38:34 WrapperNode [2020-11-30 00:38:34,274 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 00:38:34,276 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-30 00:38:34,276 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-30 00:38:34,277 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-30 00:38:34,287 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:38:34" (1/1) ... [2020-11-30 00:38:34,303 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:38:34" (1/1) ... [2020-11-30 00:38:34,334 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-30 00:38:34,335 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 00:38:34,335 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 00:38:34,336 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 00:38:34,347 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:38:34" (1/1) ... [2020-11-30 00:38:34,347 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:38:34" (1/1) ... [2020-11-30 00:38:34,367 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:38:34" (1/1) ... [2020-11-30 00:38:34,367 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:38:34" (1/1) ... [2020-11-30 00:38:34,376 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:38:34" (1/1) ... [2020-11-30 00:38:34,382 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:38:34" (1/1) ... [2020-11-30 00:38:34,384 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:38:34" (1/1) ... [2020-11-30 00:38:34,387 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 00:38:34,389 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 00:38:34,389 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 00:38:34,389 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 00:38:34,390 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:38:34" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_72d48776-8424-422d-ade4-52cbc6efee28/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 [2020-11-30 00:38:34,486 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-30 00:38:34,486 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-30 00:38:34,487 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-11-30 00:38:34,487 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-30 00:38:34,487 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-11-30 00:38:34,487 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 00:38:34,487 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 00:38:34,487 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-30 00:38:34,487 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-30 00:38:35,076 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 00:38:35,076 INFO L298 CfgBuilder]: Removed 16 assume(true) statements. [2020-11-30 00:38:35,078 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:38:35 BoogieIcfgContainer [2020-11-30 00:38:35,079 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 00:38:35,081 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-30 00:38:35,081 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-30 00:38:35,089 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-30 00:38:35,089 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 12:38:33" (1/3) ... [2020-11-30 00:38:35,091 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@dba1aef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 12:38:35, skipping insertion in model container [2020-11-30 00:38:35,091 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:38:34" (2/3) ... [2020-11-30 00:38:35,092 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@dba1aef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 12:38:35, skipping insertion in model container [2020-11-30 00:38:35,092 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:38:35" (3/3) ... [2020-11-30 00:38:35,094 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1381.c [2020-11-30 00:38:35,109 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-30 00:38:35,115 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-30 00:38:35,130 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-30 00:38:35,182 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-30 00:38:35,183 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-30 00:38:35,183 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-30 00:38:35,183 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 00:38:35,183 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 00:38:35,183 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-30 00:38:35,183 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 00:38:35,184 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-30 00:38:35,203 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states. [2020-11-30 00:38:35,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-30 00:38:35,216 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:38:35,217 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:38:35,217 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:38:35,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:38:35,226 INFO L82 PathProgramCache]: Analyzing trace with hash 927449971, now seen corresponding path program 1 times [2020-11-30 00:38:35,238 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:38:35,240 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [205293288] [2020-11-30 00:38:35,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:38:35,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:38:35,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:38:35,432 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [205293288] [2020-11-30 00:38:35,433 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:38:35,433 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-30 00:38:35,435 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806145657] [2020-11-30 00:38:35,440 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-30 00:38:35,441 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:38:35,458 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-30 00:38:35,459 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-30 00:38:35,461 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 2 states. [2020-11-30 00:38:35,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:38:35,481 INFO L93 Difference]: Finished difference Result 33 states and 45 transitions. [2020-11-30 00:38:35,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-30 00:38:35,482 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-11-30 00:38:35,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:38:35,492 INFO L225 Difference]: With dead ends: 33 [2020-11-30 00:38:35,492 INFO L226 Difference]: Without dead ends: 14 [2020-11-30 00:38:35,505 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 [2020-11-30 00:38:35,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2020-11-30 00:38:35,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2020-11-30 00:38:35,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2020-11-30 00:38:35,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 13 transitions. [2020-11-30 00:38:35,549 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 13 transitions. Word has length 10 [2020-11-30 00:38:35,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:38:35,550 INFO L481 AbstractCegarLoop]: Abstraction has 14 states and 13 transitions. [2020-11-30 00:38:35,550 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-30 00:38:35,550 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 13 transitions. [2020-11-30 00:38:35,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-30 00:38:35,551 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:38:35,552 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:38:35,553 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-30 00:38:35,553 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:38:35,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:38:35,556 INFO L82 PathProgramCache]: Analyzing trace with hash 1499794425, now seen corresponding path program 1 times [2020-11-30 00:38:35,556 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:38:35,557 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1337386603] [2020-11-30 00:38:35,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:38:35,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:38:35,637 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:38:35,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:38:35,691 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:38:35,731 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:38:35,731 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-30 00:38:35,732 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-30 00:38:35,779 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.11 12:38:35 BoogieIcfgContainer [2020-11-30 00:38:35,780 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-30 00:38:35,780 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 00:38:35,781 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 00:38:35,781 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 00:38:35,782 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:38:35" (3/4) ... [2020-11-30 00:38:35,786 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-30 00:38:35,786 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 00:38:35,790 INFO L168 Benchmark]: Toolchain (without parser) took 1935.31 ms. Allocated memory is still 136.3 MB. Free memory was 105.9 MB in the beginning and 69.5 MB in the end (delta: 36.3 MB). Peak memory consumption was 34.6 MB. Max. memory is 16.1 GB. [2020-11-30 00:38:35,792 INFO L168 Benchmark]: CDTParser took 0.37 ms. Allocated memory is still 79.7 MB. Free memory was 37.4 MB in the beginning and 37.4 MB in the end (delta: 37.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:38:35,793 INFO L168 Benchmark]: CACSL2BoogieTranslator took 415.79 ms. Allocated memory is still 136.3 MB. Free memory was 105.9 MB in the beginning and 111.0 MB in the end (delta: -5.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-30 00:38:35,795 INFO L168 Benchmark]: Boogie Procedure Inliner took 58.49 ms. Allocated memory is still 136.3 MB. Free memory was 111.0 MB in the beginning and 109.4 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 00:38:35,795 INFO L168 Benchmark]: Boogie Preprocessor took 52.48 ms. Allocated memory is still 136.3 MB. Free memory was 109.4 MB in the beginning and 108.4 MB in the end (delta: 970.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:38:35,796 INFO L168 Benchmark]: RCFGBuilder took 690.19 ms. Allocated memory is still 136.3 MB. Free memory was 108.2 MB in the beginning and 92.6 MB in the end (delta: 15.6 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2020-11-30 00:38:35,798 INFO L168 Benchmark]: TraceAbstraction took 699.06 ms. Allocated memory is still 136.3 MB. Free memory was 92.1 MB in the beginning and 70.0 MB in the end (delta: 22.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. [2020-11-30 00:38:35,799 INFO L168 Benchmark]: Witness Printer took 5.61 ms. Allocated memory is still 136.3 MB. Free memory was 70.0 MB in the beginning and 69.5 MB in the end (delta: 472.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:38:35,811 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.37 ms. Allocated memory is still 79.7 MB. Free memory was 37.4 MB in the beginning and 37.4 MB in the end (delta: 37.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 415.79 ms. Allocated memory is still 136.3 MB. Free memory was 105.9 MB in the beginning and 111.0 MB in the end (delta: -5.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 58.49 ms. Allocated memory is still 136.3 MB. Free memory was 111.0 MB in the beginning and 109.4 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 52.48 ms. Allocated memory is still 136.3 MB. Free memory was 109.4 MB in the beginning and 108.4 MB in the end (delta: 970.7 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 690.19 ms. Allocated memory is still 136.3 MB. Free memory was 108.2 MB in the beginning and 92.6 MB in the end (delta: 15.6 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 699.06 ms. Allocated memory is still 136.3 MB. Free memory was 92.1 MB in the beginning and 70.0 MB in the end (delta: 22.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. * Witness Printer took 5.61 ms. Allocated memory is still 136.3 MB. Free memory was 70.0 MB in the beginning and 69.5 MB in the end (delta: 472.8 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 someBinaryFLOATComparisonOperation at line 35, overapproximation of bitwiseOr at line 28, overapproximation of someBinaryArithmeticFLOAToperation at line 45. Possible FailurePath: [L45] float x = 0.0f / 0.0f; [L46] float y = __VERIFIER_nondet_float(); [L15] __uint32_t ix, iy; [L17] ieee_float_shape_type gf_u; [L18] gf_u.value = (x) [L19] EXPR gf_u.word [L19] (ix) = gf_u.word [L22] ieee_float_shape_type gf_u; [L23] gf_u.value = (y) [L24] EXPR gf_u.word [L24] (iy) = gf_u.word [L27] ieee_float_shape_type sf_u; [L28] sf_u.word = ((ix & 0x7fffffff) | (iy & 0x80000000)) [L29] EXPR sf_u.value [L29] (x) = sf_u.value [L31] return x; [L47] float res = copysign_float(x, y); [L35] return x != x; [L50] COND TRUE !isnan_float(res) [L3] __assert_fail("0", "float_req_bl_1381.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 18 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: 16 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=18occurred 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, 9 ConstructedInterpolants, 0 QuantifiedInterpolants, 81 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 [2020-11-30 00:38:38,673 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 00:38:38,676 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 00:38:38,718 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 00:38:38,719 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 00:38:38,721 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 00:38:38,723 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 00:38:38,727 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 00:38:38,730 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 00:38:38,731 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 00:38:38,733 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 00:38:38,735 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 00:38:38,736 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 00:38:38,738 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 00:38:38,740 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 00:38:38,742 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 00:38:38,743 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 00:38:38,745 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 00:38:38,748 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 00:38:38,751 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 00:38:38,753 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 00:38:38,755 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 00:38:38,757 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 00:38:38,759 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 00:38:38,764 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 00:38:38,764 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 00:38:38,765 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 00:38:38,767 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 00:38:38,768 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 00:38:38,769 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 00:38:38,770 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 00:38:38,771 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 00:38:38,772 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 00:38:38,774 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 00:38:38,776 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 00:38:38,776 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 00:38:38,778 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 00:38:38,778 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 00:38:38,779 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 00:38:38,781 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 00:38:38,782 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 00:38:38,783 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_72d48776-8424-422d-ade4-52cbc6efee28/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-11-30 00:38:38,821 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 00:38:38,824 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 00:38:38,827 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-30 00:38:38,829 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-30 00:38:38,830 INFO L138 SettingsManager]: * Use SBE=true [2020-11-30 00:38:38,830 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 00:38:38,831 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-30 00:38:38,831 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-30 00:38:38,831 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 00:38:38,832 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-30 00:38:38,833 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-30 00:38:38,834 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-30 00:38:38,834 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-11-30 00:38:38,834 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-11-30 00:38:38,835 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-30 00:38:38,835 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-30 00:38:38,835 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 00:38:38,836 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-30 00:38:38,836 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 00:38:38,837 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-30 00:38:38,837 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-30 00:38:38,837 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-30 00:38:38,838 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 00:38:38,838 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 00:38:38,838 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-30 00:38:38,839 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-30 00:38:38,839 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-11-30 00:38:38,839 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-11-30 00:38:38,840 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-30 00:38:38,840 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 00:38:38,840 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-30 00:38:38,841 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_72d48776-8424-422d-ade4-52cbc6efee28/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_72d48776-8424-422d-ade4-52cbc6efee28/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fd0f4a3f6b8eda4abc4e025ff55c76ee8ad620a8 [2020-11-30 00:38:39,368 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 00:38:39,414 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 00:38:39,418 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 00:38:39,420 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 00:38:39,421 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 00:38:39,423 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_72d48776-8424-422d-ade4-52cbc6efee28/bin/uautomizer/../../sv-benchmarks/c/float-newlib/float_req_bl_1381.c [2020-11-30 00:38:39,522 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_72d48776-8424-422d-ade4-52cbc6efee28/bin/uautomizer/data/604e82486/bd4642016dff41b28541d945fa73d23d/FLAGaf9d28925 [2020-11-30 00:38:40,238 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 00:38:40,239 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_72d48776-8424-422d-ade4-52cbc6efee28/sv-benchmarks/c/float-newlib/float_req_bl_1381.c [2020-11-30 00:38:40,248 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_72d48776-8424-422d-ade4-52cbc6efee28/bin/uautomizer/data/604e82486/bd4642016dff41b28541d945fa73d23d/FLAGaf9d28925 [2020-11-30 00:38:40,600 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_72d48776-8424-422d-ade4-52cbc6efee28/bin/uautomizer/data/604e82486/bd4642016dff41b28541d945fa73d23d [2020-11-30 00:38:40,604 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 00:38:40,606 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-30 00:38:40,608 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 00:38:40,608 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 00:38:40,613 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 00:38:40,614 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 12:38:40" (1/1) ... [2020-11-30 00:38:40,617 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@14d650af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:38:40, skipping insertion in model container [2020-11-30 00:38:40,617 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 12:38:40" (1/1) ... [2020-11-30 00:38:40,627 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 00:38:40,647 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 00:38:40,827 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 00:38:40,841 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 00:38:40,869 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 00:38:40,901 INFO L208 MainTranslator]: Completed translation [2020-11-30 00:38:40,902 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:38:40 WrapperNode [2020-11-30 00:38:40,902 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 00:38:40,904 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-30 00:38:40,904 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-30 00:38:40,904 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-30 00:38:40,945 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:38:40" (1/1) ... [2020-11-30 00:38:40,959 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:38:40" (1/1) ... [2020-11-30 00:38:40,985 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-30 00:38:40,986 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 00:38:40,986 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 00:38:40,986 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 00:38:40,997 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:38:40" (1/1) ... [2020-11-30 00:38:40,997 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:38:40" (1/1) ... [2020-11-30 00:38:41,002 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:38:40" (1/1) ... [2020-11-30 00:38:41,003 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:38:40" (1/1) ... [2020-11-30 00:38:41,014 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:38:40" (1/1) ... [2020-11-30 00:38:41,019 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:38:40" (1/1) ... [2020-11-30 00:38:41,022 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:38:40" (1/1) ... [2020-11-30 00:38:41,026 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 00:38:41,027 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 00:38:41,028 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 00:38:41,028 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 00:38:41,029 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:38:40" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_72d48776-8424-422d-ade4-52cbc6efee28/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 [2020-11-30 00:38:41,140 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-11-30 00:38:41,140 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-30 00:38:41,140 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2020-11-30 00:38:41,141 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-11-30 00:38:41,141 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 00:38:41,141 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 00:38:41,141 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2020-11-30 00:38:41,141 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2020-11-30 00:38:41,142 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-30 00:38:41,725 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 00:38:41,725 INFO L298 CfgBuilder]: Removed 16 assume(true) statements. [2020-11-30 00:38:41,747 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:38:41 BoogieIcfgContainer [2020-11-30 00:38:41,747 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 00:38:41,753 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-30 00:38:41,753 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-30 00:38:41,757 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-30 00:38:41,757 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 12:38:40" (1/3) ... [2020-11-30 00:38:41,759 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4be7acb3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 12:38:41, skipping insertion in model container [2020-11-30 00:38:41,759 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:38:40" (2/3) ... [2020-11-30 00:38:41,760 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4be7acb3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 12:38:41, skipping insertion in model container [2020-11-30 00:38:41,762 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:38:41" (3/3) ... [2020-11-30 00:38:41,764 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1381.c [2020-11-30 00:38:41,779 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-30 00:38:41,784 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-30 00:38:41,803 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-30 00:38:41,855 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-30 00:38:41,855 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-30 00:38:41,856 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-30 00:38:41,856 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 00:38:41,856 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 00:38:41,856 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-30 00:38:41,856 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 00:38:41,857 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-30 00:38:41,876 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states. [2020-11-30 00:38:41,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-30 00:38:41,886 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:38:41,887 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:38:41,888 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:38:41,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:38:41,896 INFO L82 PathProgramCache]: Analyzing trace with hash 927449971, now seen corresponding path program 1 times [2020-11-30 00:38:41,912 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-30 00:38:41,913 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1282950721] [2020-11-30 00:38:41,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_72d48776-8424-422d-ade4-52cbc6efee28/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 [2020-11-30 00:38:42,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:38:42,068 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 1 conjunts are in the unsatisfiable core [2020-11-30 00:38:42,074 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:38:42,093 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:38:42,094 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 00:38:42,099 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:38:42,100 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1282950721] [2020-11-30 00:38:42,101 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:38:42,101 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-11-30 00:38:42,102 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521749669] [2020-11-30 00:38:42,108 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-30 00:38:42,108 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-30 00:38:42,124 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-30 00:38:42,125 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-30 00:38:42,128 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 2 states. [2020-11-30 00:38:42,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:38:42,149 INFO L93 Difference]: Finished difference Result 33 states and 45 transitions. [2020-11-30 00:38:42,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-30 00:38:42,151 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-11-30 00:38:42,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:38:42,161 INFO L225 Difference]: With dead ends: 33 [2020-11-30 00:38:42,162 INFO L226 Difference]: Without dead ends: 14 [2020-11-30 00:38:42,165 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-30 00:38:42,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2020-11-30 00:38:42,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2020-11-30 00:38:42,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2020-11-30 00:38:42,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 13 transitions. [2020-11-30 00:38:42,216 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 13 transitions. Word has length 10 [2020-11-30 00:38:42,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:38:42,217 INFO L481 AbstractCegarLoop]: Abstraction has 14 states and 13 transitions. [2020-11-30 00:38:42,217 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-30 00:38:42,217 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 13 transitions. [2020-11-30 00:38:42,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-30 00:38:42,218 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:38:42,218 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:38:42,432 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-11-30 00:38:42,432 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:38:42,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:38:42,434 INFO L82 PathProgramCache]: Analyzing trace with hash 1499794425, now seen corresponding path program 1 times [2020-11-30 00:38:42,435 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-30 00:38:42,436 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1217385343] [2020-11-30 00:38:42,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_72d48776-8424-422d-ade4-52cbc6efee28/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 [2020-11-30 00:38:42,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:38:42,613 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 14 conjunts are in the unsatisfiable core [2020-11-30 00:38:42,617 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:38:42,882 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:38:42,883 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 00:38:43,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:38:43,179 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1217385343] [2020-11-30 00:38:43,179 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:38:43,179 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 12 [2020-11-30 00:38:43,180 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213650149] [2020-11-30 00:38:43,181 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-11-30 00:38:43,182 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-30 00:38:43,187 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-11-30 00:38:43,188 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2020-11-30 00:38:43,189 INFO L87 Difference]: Start difference. First operand 14 states and 13 transitions. Second operand 12 states. [2020-11-30 00:38:43,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:38:43,904 INFO L93 Difference]: Finished difference Result 14 states and 13 transitions. [2020-11-30 00:38:43,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-30 00:38:43,904 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 13 [2020-11-30 00:38:43,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:38:43,905 INFO L225 Difference]: With dead ends: 14 [2020-11-30 00:38:43,905 INFO L226 Difference]: Without dead ends: 0 [2020-11-30 00:38:43,907 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 12 SyntacticMatches, 3 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 3 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2020-11-30 00:38:43,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-30 00:38:43,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-30 00:38:43,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-30 00:38:43,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-30 00:38:43,908 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2020-11-30 00:38:43,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:38:43,909 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-30 00:38:43,909 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-11-30 00:38:43,909 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-30 00:38:43,909 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-30 00:38:44,121 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-11-30 00:38:44,123 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-30 00:38:44,244 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-30 00:38:44,245 INFO L270 CegarLoopResult]: At program point L31(lines 14 32) the Hoare annotation is: (and (not (fp.eq ULTIMATE.start_copysign_float_~x ULTIMATE.start_copysign_float_~x)) (forall ((ULTIMATE.start_copysign_float_~iy~0 (_ BitVec 32))) (not (let ((.cse0 (let ((.cse1 (bvor (bvand (_ bv2147483647 32) ULTIMATE.start_copysign_float_~ix~0) (bvand (_ bv2147483648 32) ULTIMATE.start_copysign_float_~iy~0)))) (fp ((_ extract 31 31) .cse1) ((_ extract 30 23) .cse1) ((_ extract 22 0) .cse1))))) (fp.eq .cse0 .cse0)))) (not (fp.eq |ULTIMATE.start_copysign_float_#res| |ULTIMATE.start_copysign_float_#res|))) [2020-11-30 00:38:44,245 INFO L274 CegarLoopResult]: For program point L21(lines 21 25) no Hoare annotation was computed. [2020-11-30 00:38:44,245 INFO L274 CegarLoopResult]: For program point L21-1(lines 14 32) no Hoare annotation was computed. [2020-11-30 00:38:44,245 INFO L274 CegarLoopResult]: For program point L50(lines 50 53) no Hoare annotation was computed. [2020-11-30 00:38:44,246 INFO L274 CegarLoopResult]: For program point L3(line 3) no Hoare annotation was computed. [2020-11-30 00:38:44,246 INFO L274 CegarLoopResult]: For program point L3-1(line 3) no Hoare annotation was computed. [2020-11-30 00:38:44,246 INFO L274 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-11-30 00:38:44,246 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-30 00:38:44,246 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-11-30 00:38:44,246 INFO L274 CegarLoopResult]: For program point L26(lines 26 30) no Hoare annotation was computed. [2020-11-30 00:38:44,246 INFO L274 CegarLoopResult]: For program point L26-1(lines 14 32) no Hoare annotation was computed. [2020-11-30 00:38:44,247 INFO L274 CegarLoopResult]: For program point L26-2(lines 26 30) no Hoare annotation was computed. [2020-11-30 00:38:44,247 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-11-30 00:38:44,247 INFO L277 CegarLoopResult]: At program point L55(lines 37 56) the Hoare annotation is: true [2020-11-30 00:38:44,247 INFO L274 CegarLoopResult]: For program point L16-1(lines 16 20) no Hoare annotation was computed. [2020-11-30 00:38:44,247 INFO L270 CegarLoopResult]: At program point L16-2(lines 16 20) the Hoare annotation is: (not (fp.eq ULTIMATE.start_copysign_float_~x ULTIMATE.start_copysign_float_~x)) [2020-11-30 00:38:44,248 INFO L270 CegarLoopResult]: At program point L35(line 35) the Hoare annotation is: (and (not (fp.eq ULTIMATE.start_copysign_float_~x ULTIMATE.start_copysign_float_~x)) (= (_ bv1 32) |ULTIMATE.start_isnan_float_#res|) (forall ((ULTIMATE.start_copysign_float_~iy~0 (_ BitVec 32))) (not (let ((.cse0 (let ((.cse1 (bvor (bvand (_ bv2147483647 32) ULTIMATE.start_copysign_float_~ix~0) (bvand (_ bv2147483648 32) ULTIMATE.start_copysign_float_~iy~0)))) (fp ((_ extract 31 31) .cse1) ((_ extract 30 23) .cse1) ((_ extract 22 0) .cse1))))) (fp.eq .cse0 .cse0)))) (not (fp.eq |ULTIMATE.start_copysign_float_#res| |ULTIMATE.start_copysign_float_#res|))) [2020-11-30 00:38:44,261 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_copysign_float_~iy~0,QUANTIFIED] [2020-11-30 00:38:44,262 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_copysign_float_~iy~0,QUANTIFIED] [2020-11-30 00:38:44,263 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_copysign_float_~iy~0,QUANTIFIED] [2020-11-30 00:38:44,263 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_copysign_float_~iy~0,QUANTIFIED] [2020-11-30 00:38:44,264 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_copysign_float_~iy~0,QUANTIFIED] [2020-11-30 00:38:44,264 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_copysign_float_~iy~0,QUANTIFIED] [2020-11-30 00:38:44,276 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_copysign_float_~iy~0,QUANTIFIED] [2020-11-30 00:38:44,277 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_copysign_float_~iy~0,QUANTIFIED] [2020-11-30 00:38:44,277 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_copysign_float_~iy~0,QUANTIFIED] [2020-11-30 00:38:44,279 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_copysign_float_~iy~0,QUANTIFIED] [2020-11-30 00:38:44,280 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_copysign_float_~iy~0,QUANTIFIED] [2020-11-30 00:38:44,280 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_copysign_float_~iy~0,QUANTIFIED] [2020-11-30 00:38:44,290 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_copysign_float_~iy~0,QUANTIFIED] [2020-11-30 00:38:44,290 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_copysign_float_~iy~0,QUANTIFIED] [2020-11-30 00:38:44,291 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_copysign_float_~iy~0,QUANTIFIED] [2020-11-30 00:38:44,291 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_copysign_float_~iy~0,QUANTIFIED] [2020-11-30 00:38:44,291 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_copysign_float_~iy~0,QUANTIFIED] [2020-11-30 00:38:44,292 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_copysign_float_~iy~0,QUANTIFIED] [2020-11-30 00:38:44,294 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_copysign_float_~iy~0,QUANTIFIED] [2020-11-30 00:38:44,294 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_copysign_float_~iy~0,QUANTIFIED] [2020-11-30 00:38:44,294 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_copysign_float_~iy~0,QUANTIFIED] [2020-11-30 00:38:44,295 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_copysign_float_~iy~0,QUANTIFIED] [2020-11-30 00:38:44,295 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_copysign_float_~iy~0,QUANTIFIED] [2020-11-30 00:38:44,299 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_copysign_float_~iy~0,QUANTIFIED] [2020-11-30 00:38:44,313 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.11 12:38:44 BoogieIcfgContainer [2020-11-30 00:38:44,317 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-30 00:38:44,318 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 00:38:44,318 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 00:38:44,318 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 00:38:44,319 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:38:41" (3/4) ... [2020-11-30 00:38:44,324 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-30 00:38:44,340 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2020-11-30 00:38:44,341 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2020-11-30 00:38:44,342 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-11-30 00:38:44,343 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-30 00:38:44,388 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_72d48776-8424-422d-ade4-52cbc6efee28/bin/uautomizer/witness.graphml [2020-11-30 00:38:44,388 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 00:38:44,391 INFO L168 Benchmark]: Toolchain (without parser) took 3783.14 ms. Allocated memory was 62.9 MB in the beginning and 79.7 MB in the end (delta: 16.8 MB). Free memory was 43.6 MB in the beginning and 58.2 MB in the end (delta: -14.7 MB). Peak memory consumption was 715.5 kB. Max. memory is 16.1 GB. [2020-11-30 00:38:44,392 INFO L168 Benchmark]: CDTParser took 0.41 ms. Allocated memory is still 62.9 MB. Free memory is still 44.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:38:44,392 INFO L168 Benchmark]: CACSL2BoogieTranslator took 294.79 ms. Allocated memory is still 62.9 MB. Free memory was 43.4 MB in the beginning and 46.2 MB in the end (delta: -2.8 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2020-11-30 00:38:44,393 INFO L168 Benchmark]: Boogie Procedure Inliner took 81.52 ms. Allocated memory is still 62.9 MB. Free memory was 46.2 MB in the beginning and 44.7 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 00:38:44,394 INFO L168 Benchmark]: Boogie Preprocessor took 40.57 ms. Allocated memory is still 62.9 MB. Free memory was 44.6 MB in the beginning and 43.2 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:38:44,395 INFO L168 Benchmark]: RCFGBuilder took 719.89 ms. Allocated memory is still 62.9 MB. Free memory was 43.2 MB in the beginning and 45.5 MB in the end (delta: -2.3 MB). Peak memory consumption was 19.8 MB. Max. memory is 16.1 GB. [2020-11-30 00:38:44,396 INFO L168 Benchmark]: TraceAbstraction took 2564.83 ms. Allocated memory was 62.9 MB in the beginning and 79.7 MB in the end (delta: 16.8 MB). Free memory was 44.9 MB in the beginning and 60.3 MB in the end (delta: -15.4 MB). Peak memory consumption was 30.0 MB. Max. memory is 16.1 GB. [2020-11-30 00:38:44,397 INFO L168 Benchmark]: Witness Printer took 70.27 ms. Allocated memory is still 79.7 MB. Free memory was 60.3 MB in the beginning and 58.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 00:38:44,401 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.41 ms. Allocated memory is still 62.9 MB. Free memory is still 44.9 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 294.79 ms. Allocated memory is still 62.9 MB. Free memory was 43.4 MB in the beginning and 46.2 MB in the end (delta: -2.8 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 81.52 ms. Allocated memory is still 62.9 MB. Free memory was 46.2 MB in the beginning and 44.7 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 40.57 ms. Allocated memory is still 62.9 MB. Free memory was 44.6 MB in the beginning and 43.2 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 719.89 ms. Allocated memory is still 62.9 MB. Free memory was 43.2 MB in the beginning and 45.5 MB in the end (delta: -2.3 MB). Peak memory consumption was 19.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 2564.83 ms. Allocated memory was 62.9 MB in the beginning and 79.7 MB in the end (delta: 16.8 MB). Free memory was 44.9 MB in the beginning and 60.3 MB in the end (delta: -15.4 MB). Peak memory consumption was 30.0 MB. Max. memory is 16.1 GB. * Witness Printer took 70.27 ms. Allocated memory is still 79.7 MB. Free memory was 60.3 MB in the beginning and 58.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_copysign_float_~iy~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_copysign_float_~iy~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_copysign_float_~iy~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_copysign_float_~iy~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_copysign_float_~iy~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_copysign_float_~iy~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_copysign_float_~iy~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_copysign_float_~iy~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_copysign_float_~iy~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_copysign_float_~iy~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_copysign_float_~iy~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_copysign_float_~iy~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_copysign_float_~iy~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_copysign_float_~iy~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_copysign_float_~iy~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_copysign_float_~iy~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_copysign_float_~iy~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_copysign_float_~iy~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_copysign_float_~iy~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_copysign_float_~iy~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_copysign_float_~iy~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_copysign_float_~iy~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_copysign_float_~iy~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_copysign_float_~iy~0,QUANTIFIED] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 3]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 14]: Loop Invariant [2020-11-30 00:38:44,415 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_copysign_float_~iy~0,QUANTIFIED] [2020-11-30 00:38:44,416 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_copysign_float_~iy~0,QUANTIFIED] [2020-11-30 00:38:44,416 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_copysign_float_~iy~0,QUANTIFIED] [2020-11-30 00:38:44,416 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_copysign_float_~iy~0,QUANTIFIED] [2020-11-30 00:38:44,417 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_copysign_float_~iy~0,QUANTIFIED] [2020-11-30 00:38:44,417 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_copysign_float_~iy~0,QUANTIFIED] [2020-11-30 00:38:44,418 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_copysign_float_~iy~0,QUANTIFIED] [2020-11-30 00:38:44,418 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_copysign_float_~iy~0,QUANTIFIED] [2020-11-30 00:38:44,418 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_copysign_float_~iy~0,QUANTIFIED] [2020-11-30 00:38:44,419 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_copysign_float_~iy~0,QUANTIFIED] [2020-11-30 00:38:44,419 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_copysign_float_~iy~0,QUANTIFIED] [2020-11-30 00:38:44,419 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_copysign_float_~iy~0,QUANTIFIED] Derived loop invariant: (!~fp.eq~FLOAT(x, x) && (forall ULTIMATE.start_copysign_float_~iy~0 : bv32 :: !~fp.eq~FLOAT(~fp~LONGDOUBLE(~bvor32(~bvand32(2147483647bv32, ix), ~bvand32(2147483648bv32, ULTIMATE.start_copysign_float_~iy~0))[31:31], ~bvor32(~bvand32(2147483647bv32, ix), ~bvand32(2147483648bv32, ULTIMATE.start_copysign_float_~iy~0))[30:23], ~bvor32(~bvand32(2147483647bv32, ix), ~bvand32(2147483648bv32, ULTIMATE.start_copysign_float_~iy~0))[22:0]), ~fp~LONGDOUBLE(~bvor32(~bvand32(2147483647bv32, ix), ~bvand32(2147483648bv32, ULTIMATE.start_copysign_float_~iy~0))[31:31], ~bvor32(~bvand32(2147483647bv32, ix), ~bvand32(2147483648bv32, ULTIMATE.start_copysign_float_~iy~0))[30:23], ~bvor32(~bvand32(2147483647bv32, ix), ~bvand32(2147483648bv32, ULTIMATE.start_copysign_float_~iy~0))[22:0])))) && !~fp.eq~FLOAT(\result, \result) - InvariantResult [Line: 37]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 35]: Loop Invariant [2020-11-30 00:38:44,421 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_copysign_float_~iy~0,QUANTIFIED] [2020-11-30 00:38:44,421 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_copysign_float_~iy~0,QUANTIFIED] [2020-11-30 00:38:44,421 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_copysign_float_~iy~0,QUANTIFIED] [2020-11-30 00:38:44,422 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_copysign_float_~iy~0,QUANTIFIED] [2020-11-30 00:38:44,422 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_copysign_float_~iy~0,QUANTIFIED] [2020-11-30 00:38:44,422 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_copysign_float_~iy~0,QUANTIFIED] [2020-11-30 00:38:44,423 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_copysign_float_~iy~0,QUANTIFIED] [2020-11-30 00:38:44,423 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_copysign_float_~iy~0,QUANTIFIED] [2020-11-30 00:38:44,423 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_copysign_float_~iy~0,QUANTIFIED] [2020-11-30 00:38:44,424 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_copysign_float_~iy~0,QUANTIFIED] [2020-11-30 00:38:44,424 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_copysign_float_~iy~0,QUANTIFIED] [2020-11-30 00:38:44,424 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_copysign_float_~iy~0,QUANTIFIED] Derived loop invariant: ((!~fp.eq~FLOAT(x, x) && 1bv32 == \result) && (forall ULTIMATE.start_copysign_float_~iy~0 : bv32 :: !~fp.eq~FLOAT(~fp~LONGDOUBLE(~bvor32(~bvand32(2147483647bv32, ix), ~bvand32(2147483648bv32, ULTIMATE.start_copysign_float_~iy~0))[31:31], ~bvor32(~bvand32(2147483647bv32, ix), ~bvand32(2147483648bv32, ULTIMATE.start_copysign_float_~iy~0))[30:23], ~bvor32(~bvand32(2147483647bv32, ix), ~bvand32(2147483648bv32, ULTIMATE.start_copysign_float_~iy~0))[22:0]), ~fp~LONGDOUBLE(~bvor32(~bvand32(2147483647bv32, ix), ~bvand32(2147483648bv32, ULTIMATE.start_copysign_float_~iy~0))[31:31], ~bvor32(~bvand32(2147483647bv32, ix), ~bvand32(2147483648bv32, ULTIMATE.start_copysign_float_~iy~0))[30:23], ~bvor32(~bvand32(2147483647bv32, ix), ~bvand32(2147483648bv32, ULTIMATE.start_copysign_float_~iy~0))[22:0])))) && !~fp.eq~FLOAT(\result, \result) - InvariantResult [Line: 16]: Loop Invariant Derived loop invariant: !~fp.eq~FLOAT(x, x) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 18 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.2s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 22 SDtfs, 14 SDslu, 24 SDs, 0 SdLazy, 20 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 47 GetRequests, 30 SyntacticMatches, 3 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 3 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=18occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 8 NumberOfFragments, 132 HoareAnnotationTreeSize, 4 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 4 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 23 NumberOfCodeBlocks, 23 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 42 ConstructedInterpolants, 12 QuantifiedInterpolants, 4074 SizeOfPredicates, 15 NumberOfNonLiveVariables, 105 ConjunctsInSsa, 15 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...