./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/double_req_bl_1031.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_24ded9a8-f0e9-40f5-afc0-8724b71c972e/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_24ded9a8-f0e9-40f5-afc0-8724b71c972e/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_24ded9a8-f0e9-40f5-afc0-8724b71c972e/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_24ded9a8-f0e9-40f5-afc0-8724b71c972e/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1031.c -s /tmp/vcloud-vcloud-master/worker/run_dir_24ded9a8-f0e9-40f5-afc0-8724b71c972e/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_24ded9a8-f0e9-40f5-afc0-8724b71c972e/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 2c4d19baf0429684b688f90d909ef640d9fb6537 ............................................................................................................................................................................................................................................................................................ 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_24ded9a8-f0e9-40f5-afc0-8724b71c972e/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_24ded9a8-f0e9-40f5-afc0-8724b71c972e/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_24ded9a8-f0e9-40f5-afc0-8724b71c972e/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_24ded9a8-f0e9-40f5-afc0-8724b71c972e/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1031.c -s /tmp/vcloud-vcloud-master/worker/run_dir_24ded9a8-f0e9-40f5-afc0-8724b71c972e/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_24ded9a8-f0e9-40f5-afc0-8724b71c972e/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 2c4d19baf0429684b688f90d909ef640d9fb6537 ....................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-29 23:15:32,151 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 23:15:32,154 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 23:15:32,222 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 23:15:32,223 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 23:15:32,228 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 23:15:32,230 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 23:15:32,234 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 23:15:32,237 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 23:15:32,244 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 23:15:32,245 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 23:15:32,255 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 23:15:32,255 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 23:15:32,259 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 23:15:32,261 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 23:15:32,263 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 23:15:32,267 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 23:15:32,270 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 23:15:32,274 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 23:15:32,282 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 23:15:32,284 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 23:15:32,286 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 23:15:32,288 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 23:15:32,289 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 23:15:32,298 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 23:15:32,299 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 23:15:32,299 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 23:15:32,302 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 23:15:32,303 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 23:15:32,304 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 23:15:32,304 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 23:15:32,306 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 23:15:32,308 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 23:15:32,309 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 23:15:32,310 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 23:15:32,310 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 23:15:32,311 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 23:15:32,311 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 23:15:32,312 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 23:15:32,314 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 23:15:32,315 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 23:15:32,317 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_24ded9a8-f0e9-40f5-afc0-8724b71c972e/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-29 23:15:32,355 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 23:15:32,355 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 23:15:32,357 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 23:15:32,358 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 23:15:32,358 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 23:15:32,358 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 23:15:32,358 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 23:15:32,359 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 23:15:32,359 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 23:15:32,359 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 23:15:32,360 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-29 23:15:32,360 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-29 23:15:32,361 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-29 23:15:32,361 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 23:15:32,361 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 23:15:32,361 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 23:15:32,362 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-29 23:15:32,362 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 23:15:32,362 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 23:15:32,362 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-29 23:15:32,362 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-29 23:15:32,363 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 23:15:32,363 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 23:15:32,363 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-29 23:15:32,363 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-29 23:15:32,364 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 23:15:32,364 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-29 23:15:32,364 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-29 23:15:32,364 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 23:15:32,365 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_24ded9a8-f0e9-40f5-afc0-8724b71c972e/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_24ded9a8-f0e9-40f5-afc0-8724b71c972e/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2c4d19baf0429684b688f90d909ef640d9fb6537 [2020-11-29 23:15:32,665 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 23:15:32,702 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 23:15:32,706 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 23:15:32,708 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 23:15:32,709 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 23:15:32,711 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_24ded9a8-f0e9-40f5-afc0-8724b71c972e/bin/uautomizer/../../sv-benchmarks/c/float-newlib/double_req_bl_1031.c [2020-11-29 23:15:32,805 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_24ded9a8-f0e9-40f5-afc0-8724b71c972e/bin/uautomizer/data/605eb2ada/7af1922a8432472d8c44a2d68226f3ba/FLAG0d06f9946 [2020-11-29 23:15:33,259 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 23:15:33,260 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_24ded9a8-f0e9-40f5-afc0-8724b71c972e/sv-benchmarks/c/float-newlib/double_req_bl_1031.c [2020-11-29 23:15:33,267 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_24ded9a8-f0e9-40f5-afc0-8724b71c972e/bin/uautomizer/data/605eb2ada/7af1922a8432472d8c44a2d68226f3ba/FLAG0d06f9946 [2020-11-29 23:15:33,660 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_24ded9a8-f0e9-40f5-afc0-8724b71c972e/bin/uautomizer/data/605eb2ada/7af1922a8432472d8c44a2d68226f3ba [2020-11-29 23:15:33,663 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 23:15:33,666 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 23:15:33,668 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 23:15:33,669 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 23:15:33,673 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 23:15:33,674 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 11:15:33" (1/1) ... [2020-11-29 23:15:33,676 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f80749 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:15:33, skipping insertion in model container [2020-11-29 23:15:33,677 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 11:15:33" (1/1) ... [2020-11-29 23:15:33,684 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 23:15:33,707 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 23:15:33,931 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 23:15:33,940 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 23:15:33,983 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 23:15:34,007 INFO L208 MainTranslator]: Completed translation [2020-11-29 23:15:34,009 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:15:34 WrapperNode [2020-11-29 23:15:34,009 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 23:15:34,011 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 23:15:34,011 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 23:15:34,012 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 23:15:34,019 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:15:34" (1/1) ... [2020-11-29 23:15:34,044 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:15:34" (1/1) ... [2020-11-29 23:15:34,080 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 23:15:34,082 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 23:15:34,083 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 23:15:34,084 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 23:15:34,092 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:15:34" (1/1) ... [2020-11-29 23:15:34,092 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:15:34" (1/1) ... [2020-11-29 23:15:34,098 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:15:34" (1/1) ... [2020-11-29 23:15:34,098 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:15:34" (1/1) ... [2020-11-29 23:15:34,115 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:15:34" (1/1) ... [2020-11-29 23:15:34,121 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:15:34" (1/1) ... [2020-11-29 23:15:34,131 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:15:34" (1/1) ... [2020-11-29 23:15:34,134 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 23:15:34,135 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 23:15:34,135 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 23:15:34,135 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 23:15:34,136 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:15:34" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_24ded9a8-f0e9-40f5-afc0-8724b71c972e/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 23:15:34,215 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-29 23:15:34,216 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 23:15:34,216 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-11-29 23:15:34,217 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-29 23:15:34,217 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-11-29 23:15:34,217 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 23:15:34,218 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 23:15:34,218 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-29 23:15:34,218 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-29 23:15:34,722 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 23:15:34,725 INFO L298 CfgBuilder]: Removed 14 assume(true) statements. [2020-11-29 23:15:34,727 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 11:15:34 BoogieIcfgContainer [2020-11-29 23:15:34,727 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 23:15:34,729 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-29 23:15:34,730 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-29 23:15:34,733 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-29 23:15:34,734 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 11:15:33" (1/3) ... [2020-11-29 23:15:34,735 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44105202 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 11:15:34, skipping insertion in model container [2020-11-29 23:15:34,735 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:15:34" (2/3) ... [2020-11-29 23:15:34,736 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44105202 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 11:15:34, skipping insertion in model container [2020-11-29 23:15:34,737 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 11:15:34" (3/3) ... [2020-11-29 23:15:34,739 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1031.c [2020-11-29 23:15:34,751 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-29 23:15:34,756 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-29 23:15:34,773 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-29 23:15:34,809 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-29 23:15:34,810 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-29 23:15:34,810 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-29 23:15:34,810 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 23:15:34,810 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 23:15:34,811 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-29 23:15:34,811 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 23:15:34,811 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-29 23:15:34,825 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states. [2020-11-29 23:15:34,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-29 23:15:34,832 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:15:34,833 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:15:34,833 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 23:15:34,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:15:34,839 INFO L82 PathProgramCache]: Analyzing trace with hash 2068161395, now seen corresponding path program 1 times [2020-11-29 23:15:34,848 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:15:34,848 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327712894] [2020-11-29 23:15:34,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:15:34,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:15:34,972 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:15:34,973 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [327712894] [2020-11-29 23:15:34,973 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 23:15:34,974 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-29 23:15:34,974 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388071110] [2020-11-29 23:15:34,978 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-29 23:15:34,979 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:15:34,991 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-29 23:15:34,992 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-29 23:15:34,993 INFO L87 Difference]: Start difference. First operand 27 states. Second operand 2 states. [2020-11-29 23:15:35,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:15:35,010 INFO L93 Difference]: Finished difference Result 51 states and 75 transitions. [2020-11-29 23:15:35,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-29 23:15:35,011 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2020-11-29 23:15:35,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:15:35,020 INFO L225 Difference]: With dead ends: 51 [2020-11-29 23:15:35,020 INFO L226 Difference]: Without dead ends: 23 [2020-11-29 23:15:35,023 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-29 23:15:35,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-11-29 23:15:35,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2020-11-29 23:15:35,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-11-29 23:15:35,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 30 transitions. [2020-11-29 23:15:35,055 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 30 transitions. Word has length 11 [2020-11-29 23:15:35,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:15:35,056 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 30 transitions. [2020-11-29 23:15:35,056 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-29 23:15:35,056 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 30 transitions. [2020-11-29 23:15:35,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-29 23:15:35,057 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:15:35,057 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:15:35,057 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-29 23:15:35,057 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 23:15:35,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:15:35,058 INFO L82 PathProgramCache]: Analyzing trace with hash -1606884976, now seen corresponding path program 1 times [2020-11-29 23:15:35,058 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:15:35,059 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1152314128] [2020-11-29 23:15:35,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:15:35,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:15:35,106 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:15:35,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:15:35,148 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:15:35,194 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 23:15:35,194 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-29 23:15:35,195 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-29 23:15:35,246 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 11:15:35 BoogieIcfgContainer [2020-11-29 23:15:35,246 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-29 23:15:35,247 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 23:15:35,248 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 23:15:35,248 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 23:15:35,248 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 11:15:34" (3/4) ... [2020-11-29 23:15:35,252 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-29 23:15:35,252 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 23:15:35,256 INFO L168 Benchmark]: Toolchain (without parser) took 1587.57 ms. Allocated memory is still 102.8 MB. Free memory was 71.0 MB in the beginning and 77.4 MB in the end (delta: -6.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 23:15:35,257 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 73.4 MB. Free memory was 34.3 MB in the beginning and 34.2 MB in the end (delta: 37.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 23:15:35,259 INFO L168 Benchmark]: CACSL2BoogieTranslator took 341.61 ms. Allocated memory is still 102.8 MB. Free memory was 70.8 MB in the beginning and 78.7 MB in the end (delta: -7.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-29 23:15:35,260 INFO L168 Benchmark]: Boogie Procedure Inliner took 70.31 ms. Allocated memory is still 102.8 MB. Free memory was 78.7 MB in the beginning and 76.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 23:15:35,260 INFO L168 Benchmark]: Boogie Preprocessor took 52.03 ms. Allocated memory is still 102.8 MB. Free memory was 76.6 MB in the beginning and 75.6 MB in the end (delta: 1.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 23:15:35,261 INFO L168 Benchmark]: RCFGBuilder took 592.85 ms. Allocated memory is still 102.8 MB. Free memory was 75.1 MB in the beginning and 57.2 MB in the end (delta: 17.9 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. [2020-11-29 23:15:35,262 INFO L168 Benchmark]: TraceAbstraction took 517.16 ms. Allocated memory is still 102.8 MB. Free memory was 56.7 MB in the beginning and 78.0 MB in the end (delta: -21.3 MB). Peak memory consumption was 25.8 MB. Max. memory is 16.1 GB. [2020-11-29 23:15:35,263 INFO L168 Benchmark]: Witness Printer took 5.50 ms. Allocated memory is still 102.8 MB. Free memory was 78.0 MB in the beginning and 77.4 MB in the end (delta: 578.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 23:15:35,272 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 73.4 MB. Free memory was 34.3 MB in the beginning and 34.2 MB in the end (delta: 37.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 341.61 ms. Allocated memory is still 102.8 MB. Free memory was 70.8 MB in the beginning and 78.7 MB in the end (delta: -7.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 70.31 ms. Allocated memory is still 102.8 MB. Free memory was 78.7 MB in the beginning and 76.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 52.03 ms. Allocated memory is still 102.8 MB. Free memory was 76.6 MB in the beginning and 75.6 MB in the end (delta: 1.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 592.85 ms. Allocated memory is still 102.8 MB. Free memory was 75.1 MB in the beginning and 57.2 MB in the end (delta: 17.9 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 517.16 ms. Allocated memory is still 102.8 MB. Free memory was 56.7 MB in the beginning and 78.0 MB in the end (delta: -21.3 MB). Peak memory consumption was 25.8 MB. Max. memory is 16.1 GB. * Witness Printer took 5.50 ms. Allocated memory is still 102.8 MB. Free memory was 78.0 MB in the beginning and 77.4 MB in the end (delta: 578.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 3]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of shiftRight at line 36, overapproximation of someBinaryArithmeticDOUBLEoperation at line 76, overapproximation of bitwiseAnd at line 37, overapproximation of someBinaryDOUBLEComparisonOperation at line 17. Possible FailurePath: [L76] double x = 0.0 / 0.0; [L20] __int32_t msw, exponent_less_1023; [L21] __uint32_t lsw; [L23] ieee_double_shape_type ew_u; [L24] ew_u.value = (x) [L25] EXPR ew_u.parts.msw [L25] (msw) = ew_u.parts.msw [L26] EXPR ew_u.parts.lsw [L26] (lsw) = ew_u.parts.lsw [L28] exponent_less_1023 = ((msw & 0x7ff00000) >> 20) - 1023 [L29] COND TRUE exponent_less_1023 < 20 [L30] COND FALSE !(exponent_less_1023 < 0) [L36] __uint32_t exponent_mask = 0x000fffff >> exponent_less_1023; [L37] COND TRUE (msw & exponent_mask) == 0 && lsw == 0 [L38] return x; [L77] double res = round_double(x); [L17] return x != x; [L80] COND TRUE !isnan_double(res) [L3] __assert_fail("0", "double_req_bl_1031.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 27 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.3s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 33 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=27occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 23 NumberOfCodeBlocks, 23 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 10 ConstructedInterpolants, 0 QuantifiedInterpolants, 100 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.0-a4ecdab [2020-11-29 23:15:37,801 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 23:15:37,804 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 23:15:37,861 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 23:15:37,864 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 23:15:37,870 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 23:15:37,874 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 23:15:37,880 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 23:15:37,884 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 23:15:37,892 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 23:15:37,894 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 23:15:37,898 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 23:15:37,903 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 23:15:37,906 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 23:15:37,908 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 23:15:37,910 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 23:15:37,911 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 23:15:37,913 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 23:15:37,915 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 23:15:37,924 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 23:15:37,929 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 23:15:37,931 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 23:15:37,933 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 23:15:37,935 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 23:15:37,940 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 23:15:37,944 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 23:15:37,944 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 23:15:37,945 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 23:15:37,947 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 23:15:37,948 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 23:15:37,949 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 23:15:37,950 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 23:15:37,952 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 23:15:37,953 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 23:15:37,954 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 23:15:37,954 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 23:15:37,955 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 23:15:37,956 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 23:15:37,956 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 23:15:37,958 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 23:15:37,959 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 23:15:37,960 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_24ded9a8-f0e9-40f5-afc0-8724b71c972e/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-11-29 23:15:38,010 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 23:15:38,010 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 23:15:38,014 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 23:15:38,014 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 23:15:38,014 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 23:15:38,015 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 23:15:38,015 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 23:15:38,015 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 23:15:38,015 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 23:15:38,015 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-29 23:15:38,016 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-29 23:15:38,017 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-29 23:15:38,017 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-11-29 23:15:38,017 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-11-29 23:15:38,017 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 23:15:38,018 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 23:15:38,018 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 23:15:38,018 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-29 23:15:38,018 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 23:15:38,019 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 23:15:38,019 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-29 23:15:38,019 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-29 23:15:38,019 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 23:15:38,020 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 23:15:38,020 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-29 23:15:38,020 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-29 23:15:38,020 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-11-29 23:15:38,020 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-11-29 23:15:38,021 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-29 23:15:38,021 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 23:15:38,021 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-29 23:15:38,021 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_24ded9a8-f0e9-40f5-afc0-8724b71c972e/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_24ded9a8-f0e9-40f5-afc0-8724b71c972e/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2c4d19baf0429684b688f90d909ef640d9fb6537 [2020-11-29 23:15:38,393 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 23:15:38,426 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 23:15:38,429 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 23:15:38,431 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 23:15:38,431 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 23:15:38,432 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_24ded9a8-f0e9-40f5-afc0-8724b71c972e/bin/uautomizer/../../sv-benchmarks/c/float-newlib/double_req_bl_1031.c [2020-11-29 23:15:38,510 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_24ded9a8-f0e9-40f5-afc0-8724b71c972e/bin/uautomizer/data/c713128a5/56068adf043e4fe085d42513fdf7389b/FLAG4679ce962 [2020-11-29 23:15:39,112 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 23:15:39,116 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_24ded9a8-f0e9-40f5-afc0-8724b71c972e/sv-benchmarks/c/float-newlib/double_req_bl_1031.c [2020-11-29 23:15:39,125 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_24ded9a8-f0e9-40f5-afc0-8724b71c972e/bin/uautomizer/data/c713128a5/56068adf043e4fe085d42513fdf7389b/FLAG4679ce962 [2020-11-29 23:15:39,467 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_24ded9a8-f0e9-40f5-afc0-8724b71c972e/bin/uautomizer/data/c713128a5/56068adf043e4fe085d42513fdf7389b [2020-11-29 23:15:39,470 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 23:15:39,471 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 23:15:39,473 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 23:15:39,473 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 23:15:39,477 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 23:15:39,477 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 11:15:39" (1/1) ... [2020-11-29 23:15:39,479 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@72051ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:15:39, skipping insertion in model container [2020-11-29 23:15:39,480 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 11:15:39" (1/1) ... [2020-11-29 23:15:39,491 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 23:15:39,511 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 23:15:39,756 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 23:15:39,770 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 23:15:39,821 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 23:15:39,871 INFO L208 MainTranslator]: Completed translation [2020-11-29 23:15:39,872 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:15:39 WrapperNode [2020-11-29 23:15:39,873 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 23:15:39,874 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 23:15:39,875 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 23:15:39,876 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 23:15:39,889 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:15:39" (1/1) ... [2020-11-29 23:15:39,917 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:15:39" (1/1) ... [2020-11-29 23:15:39,950 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 23:15:39,952 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 23:15:39,952 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 23:15:39,952 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 23:15:39,961 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:15:39" (1/1) ... [2020-11-29 23:15:39,961 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:15:39" (1/1) ... [2020-11-29 23:15:39,973 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:15:39" (1/1) ... [2020-11-29 23:15:39,973 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:15:39" (1/1) ... [2020-11-29 23:15:39,982 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:15:39" (1/1) ... [2020-11-29 23:15:39,994 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:15:39" (1/1) ... [2020-11-29 23:15:39,996 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:15:39" (1/1) ... [2020-11-29 23:15:40,000 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 23:15:40,001 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 23:15:40,001 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 23:15:40,001 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 23:15:40,002 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:15:39" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_24ded9a8-f0e9-40f5-afc0-8724b71c972e/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 23:15:40,072 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2020-11-29 23:15:40,072 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2020-11-29 23:15:40,072 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-11-29 23:15:40,072 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 23:15:40,073 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-11-29 23:15:40,073 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 23:15:40,073 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 23:15:40,073 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2020-11-29 23:15:40,073 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-29 23:15:40,604 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 23:15:40,604 INFO L298 CfgBuilder]: Removed 14 assume(true) statements. [2020-11-29 23:15:40,606 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 11:15:40 BoogieIcfgContainer [2020-11-29 23:15:40,606 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 23:15:40,608 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-29 23:15:40,608 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-29 23:15:40,611 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-29 23:15:40,612 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 11:15:39" (1/3) ... [2020-11-29 23:15:40,612 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fc6389e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 11:15:40, skipping insertion in model container [2020-11-29 23:15:40,613 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:15:39" (2/3) ... [2020-11-29 23:15:40,613 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fc6389e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 11:15:40, skipping insertion in model container [2020-11-29 23:15:40,613 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 11:15:40" (3/3) ... [2020-11-29 23:15:40,615 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1031.c [2020-11-29 23:15:40,626 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-29 23:15:40,629 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-29 23:15:40,642 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-29 23:15:40,668 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-29 23:15:40,669 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-29 23:15:40,669 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-29 23:15:40,669 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 23:15:40,669 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 23:15:40,670 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-29 23:15:40,670 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 23:15:40,670 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-29 23:15:40,683 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states. [2020-11-29 23:15:40,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-29 23:15:40,689 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:15:40,690 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:15:40,690 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 23:15:40,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:15:40,697 INFO L82 PathProgramCache]: Analyzing trace with hash 2068161395, now seen corresponding path program 1 times [2020-11-29 23:15:40,709 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 23:15:40,709 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1220262275] [2020-11-29 23:15:40,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_24ded9a8-f0e9-40f5-afc0-8724b71c972e/bin/uautomizer/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2020-11-29 23:15:40,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:15:40,832 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 1 conjunts are in the unsatisfiable core [2020-11-29 23:15:40,837 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 23:15:40,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:15:40,860 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-29 23:15:40,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:15:40,866 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1220262275] [2020-11-29 23:15:40,867 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-29 23:15:40,867 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-11-29 23:15:40,868 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712328418] [2020-11-29 23:15:40,872 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-29 23:15:40,873 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-29 23:15:40,886 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-29 23:15:40,887 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-29 23:15:40,889 INFO L87 Difference]: Start difference. First operand 27 states. Second operand 2 states. [2020-11-29 23:15:40,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:15:40,906 INFO L93 Difference]: Finished difference Result 51 states and 75 transitions. [2020-11-29 23:15:40,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-29 23:15:40,907 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2020-11-29 23:15:40,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:15:40,916 INFO L225 Difference]: With dead ends: 51 [2020-11-29 23:15:40,917 INFO L226 Difference]: Without dead ends: 23 [2020-11-29 23:15:40,919 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-29 23:15:40,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-11-29 23:15:40,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2020-11-29 23:15:40,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-11-29 23:15:40,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 30 transitions. [2020-11-29 23:15:40,953 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 30 transitions. Word has length 11 [2020-11-29 23:15:40,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:15:40,954 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 30 transitions. [2020-11-29 23:15:40,954 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-29 23:15:40,954 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 30 transitions. [2020-11-29 23:15:40,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-29 23:15:40,955 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:15:40,955 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:15:41,173 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-11-29 23:15:41,173 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 23:15:41,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:15:41,174 INFO L82 PathProgramCache]: Analyzing trace with hash -1606884976, now seen corresponding path program 1 times [2020-11-29 23:15:41,175 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 23:15:41,175 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1307742168] [2020-11-29 23:15:41,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_24ded9a8-f0e9-40f5-afc0-8724b71c972e/bin/uautomizer/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2020-11-29 23:15:41,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:15:41,327 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 10 conjunts are in the unsatisfiable core [2020-11-29 23:15:41,329 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 23:15:41,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:15:41,476 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-29 23:15:41,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:15:41,598 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1307742168] [2020-11-29 23:15:41,598 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-29 23:15:41,599 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2020-11-29 23:15:41,599 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225100183] [2020-11-29 23:15:41,600 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-29 23:15:41,600 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-29 23:15:41,601 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-29 23:15:41,602 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-11-29 23:15:41,602 INFO L87 Difference]: Start difference. First operand 23 states and 30 transitions. Second operand 10 states. [2020-11-29 23:15:42,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:15:42,274 INFO L93 Difference]: Finished difference Result 28 states and 34 transitions. [2020-11-29 23:15:42,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-29 23:15:42,275 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 12 [2020-11-29 23:15:42,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:15:42,276 INFO L225 Difference]: With dead ends: 28 [2020-11-29 23:15:42,276 INFO L226 Difference]: Without dead ends: 22 [2020-11-29 23:15:42,277 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2020-11-29 23:15:42,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2020-11-29 23:15:42,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2020-11-29 23:15:42,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-11-29 23:15:42,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 25 transitions. [2020-11-29 23:15:42,293 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 25 transitions. Word has length 12 [2020-11-29 23:15:42,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:15:42,293 INFO L481 AbstractCegarLoop]: Abstraction has 22 states and 25 transitions. [2020-11-29 23:15:42,294 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-29 23:15:42,294 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 25 transitions. [2020-11-29 23:15:42,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-29 23:15:42,298 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:15:42,298 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:15:42,505 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-11-29 23:15:42,505 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 23:15:42,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:15:42,506 INFO L82 PathProgramCache]: Analyzing trace with hash -1251020519, now seen corresponding path program 1 times [2020-11-29 23:15:42,506 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 23:15:42,507 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1846159777] [2020-11-29 23:15:42,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_24ded9a8-f0e9-40f5-afc0-8724b71c972e/bin/uautomizer/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2020-11-29 23:15:42,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:15:42,633 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-29 23:15:42,635 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 23:15:42,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:15:42,792 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-29 23:15:42,977 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:15:42,977 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1846159777] [2020-11-29 23:15:42,977 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-29 23:15:42,978 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2020-11-29 23:15:42,978 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042695531] [2020-11-29 23:15:42,978 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-29 23:15:42,978 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-29 23:15:42,979 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-29 23:15:42,980 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-11-29 23:15:42,980 INFO L87 Difference]: Start difference. First operand 22 states and 25 transitions. Second operand 8 states. [2020-11-29 23:15:43,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:15:43,262 INFO L93 Difference]: Finished difference Result 22 states and 25 transitions. [2020-11-29 23:15:43,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-29 23:15:43,264 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 15 [2020-11-29 23:15:43,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:15:43,264 INFO L225 Difference]: With dead ends: 22 [2020-11-29 23:15:43,264 INFO L226 Difference]: Without dead ends: 0 [2020-11-29 23:15:43,265 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-11-29 23:15:43,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-29 23:15:43,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-29 23:15:43,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-29 23:15:43,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-29 23:15:43,266 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2020-11-29 23:15:43,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:15:43,266 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-29 23:15:43,266 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-29 23:15:43,266 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-29 23:15:43,266 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-29 23:15:43,474 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-11-29 23:15:43,475 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-29 23:15:43,589 INFO L277 CegarLoopResult]: At program point L85(lines 68 86) the Hoare annotation is: true [2020-11-29 23:15:43,589 INFO L274 CegarLoopResult]: For program point L44(lines 44 47) no Hoare annotation was computed. [2020-11-29 23:15:43,589 INFO L274 CegarLoopResult]: For program point L3(line 3) no Hoare annotation was computed. [2020-11-29 23:15:43,589 INFO L274 CegarLoopResult]: For program point L3-1(line 3) no Hoare annotation was computed. [2020-11-29 23:15:43,590 INFO L270 CegarLoopResult]: At program point L65(lines 19 66) the Hoare annotation is: (and (not (fp.eq ULTIMATE.start_round_double_~x ULTIMATE.start_round_double_~x)) (not (fp.eq |ULTIMATE.start_round_double_#res| |ULTIMATE.start_round_double_#res|))) [2020-11-29 23:15:43,590 INFO L274 CegarLoopResult]: For program point L32(lines 32 33) no Hoare annotation was computed. [2020-11-29 23:15:43,590 INFO L274 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-11-29 23:15:43,590 INFO L274 CegarLoopResult]: For program point L32-2(lines 32 33) no Hoare annotation was computed. [2020-11-29 23:15:43,590 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-29 23:15:43,590 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-11-29 23:15:43,590 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-11-29 23:15:43,590 INFO L274 CegarLoopResult]: For program point L37(lines 37 38) no Hoare annotation was computed. [2020-11-29 23:15:43,590 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-29 23:15:43,590 INFO L274 CegarLoopResult]: For program point L29(lines 29 58) no Hoare annotation was computed. [2020-11-29 23:15:43,590 INFO L274 CegarLoopResult]: For program point L54(lines 54 55) no Hoare annotation was computed. [2020-11-29 23:15:43,591 INFO L274 CegarLoopResult]: For program point L54-2(lines 54 55) no Hoare annotation was computed. [2020-11-29 23:15:43,591 INFO L270 CegarLoopResult]: At program point L17(line 17) the Hoare annotation is: (and (not (fp.eq ULTIMATE.start_round_double_~x ULTIMATE.start_round_double_~x)) (not (fp.eq |ULTIMATE.start_round_double_#res| |ULTIMATE.start_round_double_#res|)) (= (_ bv1 32) |ULTIMATE.start_isnan_double_#res|)) [2020-11-29 23:15:43,591 INFO L274 CegarLoopResult]: For program point L30(lines 30 42) no Hoare annotation was computed. [2020-11-29 23:15:43,591 INFO L274 CegarLoopResult]: For program point L59(lines 59 64) no Hoare annotation was computed. [2020-11-29 23:15:43,591 INFO L274 CegarLoopResult]: For program point L59-1(lines 19 66) no Hoare annotation was computed. [2020-11-29 23:15:43,591 INFO L274 CegarLoopResult]: For program point L59-2(lines 59 64) no Hoare annotation was computed. [2020-11-29 23:15:43,591 INFO L274 CegarLoopResult]: For program point L22-1(lines 22 27) no Hoare annotation was computed. [2020-11-29 23:15:43,591 INFO L270 CegarLoopResult]: At program point L22-2(lines 22 27) the Hoare annotation is: (not (fp.eq ULTIMATE.start_round_double_~x ULTIMATE.start_round_double_~x)) [2020-11-29 23:15:43,591 INFO L274 CegarLoopResult]: For program point L22-3(lines 22 27) no Hoare annotation was computed. [2020-11-29 23:15:43,591 INFO L274 CegarLoopResult]: For program point L51(lines 51 52) no Hoare annotation was computed. [2020-11-29 23:15:43,591 INFO L274 CegarLoopResult]: For program point L80(lines 80 83) no Hoare annotation was computed. [2020-11-29 23:15:43,591 INFO L274 CegarLoopResult]: For program point L43(lines 43 58) no Hoare annotation was computed. [2020-11-29 23:15:43,610 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 11:15:43 BoogieIcfgContainer [2020-11-29 23:15:43,610 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-29 23:15:43,610 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 23:15:43,611 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 23:15:43,611 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 23:15:43,611 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 11:15:40" (3/4) ... [2020-11-29 23:15:43,614 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-29 23:15:43,628 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2020-11-29 23:15:43,628 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2020-11-29 23:15:43,629 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-11-29 23:15:43,631 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-29 23:15:43,659 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: !~fp.eq~DOUBLE(x, x) && !~fp.eq~DOUBLE(\result, \result) [2020-11-29 23:15:43,661 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (!~fp.eq~DOUBLE(x, x) && !~fp.eq~DOUBLE(\result, \result)) && 1bv32 == \result [2020-11-29 23:15:43,708 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_24ded9a8-f0e9-40f5-afc0-8724b71c972e/bin/uautomizer/witness.graphml [2020-11-29 23:15:43,709 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 23:15:43,711 INFO L168 Benchmark]: Toolchain (without parser) took 4238.24 ms. Allocated memory was 65.0 MB in the beginning and 81.8 MB in the end (delta: 16.8 MB). Free memory was 46.6 MB in the beginning and 29.0 MB in the end (delta: 17.5 MB). Peak memory consumption was 32.8 MB. Max. memory is 16.1 GB. [2020-11-29 23:15:43,711 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 65.0 MB. Free memory is still 48.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 23:15:43,712 INFO L168 Benchmark]: CACSL2BoogieTranslator took 400.31 ms. Allocated memory is still 65.0 MB. Free memory was 46.5 MB in the beginning and 49.1 MB in the end (delta: -2.6 MB). Peak memory consumption was 13.9 MB. Max. memory is 16.1 GB. [2020-11-29 23:15:43,713 INFO L168 Benchmark]: Boogie Procedure Inliner took 76.19 ms. Allocated memory is still 65.0 MB. Free memory was 49.1 MB in the beginning and 47.5 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 23:15:43,713 INFO L168 Benchmark]: Boogie Preprocessor took 48.33 ms. Allocated memory is still 65.0 MB. Free memory was 47.5 MB in the beginning and 45.9 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 23:15:43,714 INFO L168 Benchmark]: RCFGBuilder took 605.33 ms. Allocated memory was 65.0 MB in the beginning and 81.8 MB in the end (delta: 16.8 MB). Free memory was 45.8 MB in the beginning and 64.1 MB in the end (delta: -18.3 MB). Peak memory consumption was 22.2 MB. Max. memory is 16.1 GB. [2020-11-29 23:15:43,715 INFO L168 Benchmark]: TraceAbstraction took 3002.09 ms. Allocated memory is still 81.8 MB. Free memory was 63.5 MB in the beginning and 32.5 MB in the end (delta: 31.0 MB). Peak memory consumption was 32.4 MB. Max. memory is 16.1 GB. [2020-11-29 23:15:43,715 INFO L168 Benchmark]: Witness Printer took 98.27 ms. Allocated memory is still 81.8 MB. Free memory was 32.5 MB in the beginning and 29.0 MB in the end (delta: 3.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 23:15:43,722 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 65.0 MB. Free memory is still 48.1 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 400.31 ms. Allocated memory is still 65.0 MB. Free memory was 46.5 MB in the beginning and 49.1 MB in the end (delta: -2.6 MB). Peak memory consumption was 13.9 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 76.19 ms. Allocated memory is still 65.0 MB. Free memory was 49.1 MB in the beginning and 47.5 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 48.33 ms. Allocated memory is still 65.0 MB. Free memory was 47.5 MB in the beginning and 45.9 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 605.33 ms. Allocated memory was 65.0 MB in the beginning and 81.8 MB in the end (delta: 16.8 MB). Free memory was 45.8 MB in the beginning and 64.1 MB in the end (delta: -18.3 MB). Peak memory consumption was 22.2 MB. Max. memory is 16.1 GB. * TraceAbstraction took 3002.09 ms. Allocated memory is still 81.8 MB. Free memory was 63.5 MB in the beginning and 32.5 MB in the end (delta: 31.0 MB). Peak memory consumption was 32.4 MB. Max. memory is 16.1 GB. * Witness Printer took 98.27 ms. Allocated memory is still 81.8 MB. Free memory was 32.5 MB in the beginning and 29.0 MB in the end (delta: 3.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * 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: 68]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: !~fp.eq~DOUBLE(x, x) && !~fp.eq~DOUBLE(\result, \result) - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: (!~fp.eq~DOUBLE(x, x) && !~fp.eq~DOUBLE(\result, \result)) && 1bv32 == \result - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: !~fp.eq~DOUBLE(x, x) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 27 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.8s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 1.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 59 SDtfs, 28 SDslu, 124 SDs, 0 SdLazy, 54 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 76 GetRequests, 56 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=27occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 8 NumberOfFragments, 26 HoareAnnotationTreeSize, 4 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 4 FomulaSimplificationsInter, 8 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 38 NumberOfCodeBlocks, 38 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 70 ConstructedInterpolants, 12 QuantifiedInterpolants, 3121 SizeOfPredicates, 18 NumberOfNonLiveVariables, 155 ConjunctsInSsa, 19 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...