./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/double_req_bl_1052c.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_78b0cf5a-38db-4b72-9fc2-4deaf0054828/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_78b0cf5a-38db-4b72-9fc2-4deaf0054828/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_78b0cf5a-38db-4b72-9fc2-4deaf0054828/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_78b0cf5a-38db-4b72-9fc2-4deaf0054828/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1052c.c -s /tmp/vcloud-vcloud-master/worker/run_dir_78b0cf5a-38db-4b72-9fc2-4deaf0054828/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_78b0cf5a-38db-4b72-9fc2-4deaf0054828/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 94bd51eb56827c6c266b6ed4f7ea5182fc2e875c ..................................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_78b0cf5a-38db-4b72-9fc2-4deaf0054828/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_78b0cf5a-38db-4b72-9fc2-4deaf0054828/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_78b0cf5a-38db-4b72-9fc2-4deaf0054828/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_78b0cf5a-38db-4b72-9fc2-4deaf0054828/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1052c.c -s /tmp/vcloud-vcloud-master/worker/run_dir_78b0cf5a-38db-4b72-9fc2-4deaf0054828/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_78b0cf5a-38db-4b72-9fc2-4deaf0054828/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 94bd51eb56827c6c266b6ed4f7ea5182fc2e875c ....................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-28 03:02:45,199 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 03:02:45,201 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 03:02:45,244 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 03:02:45,245 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 03:02:45,251 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 03:02:45,253 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 03:02:45,258 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 03:02:45,261 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 03:02:45,267 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 03:02:45,268 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 03:02:45,271 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 03:02:45,272 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 03:02:45,275 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 03:02:45,277 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 03:02:45,280 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 03:02:45,281 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 03:02:45,285 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 03:02:45,289 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 03:02:45,296 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 03:02:45,298 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 03:02:45,300 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 03:02:45,302 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 03:02:45,303 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 03:02:45,313 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 03:02:45,313 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 03:02:45,322 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 03:02:45,323 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 03:02:45,324 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 03:02:45,325 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 03:02:45,325 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 03:02:45,327 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 03:02:45,328 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 03:02:45,329 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 03:02:45,330 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 03:02:45,330 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 03:02:45,331 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 03:02:45,332 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 03:02:45,332 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 03:02:45,333 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 03:02:45,334 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 03:02:45,335 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_78b0cf5a-38db-4b72-9fc2-4deaf0054828/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-28 03:02:45,366 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 03:02:45,366 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 03:02:45,367 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-28 03:02:45,368 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-28 03:02:45,368 INFO L138 SettingsManager]: * Use SBE=true [2020-11-28 03:02:45,369 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 03:02:45,369 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 03:02:45,369 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 03:02:45,369 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 03:02:45,370 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 03:02:45,370 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 03:02:45,370 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 03:02:45,371 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 03:02:45,371 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 03:02:45,371 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 03:02:45,371 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 03:02:45,372 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 03:02:45,372 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 03:02:45,372 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-28 03:02:45,373 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 03:02:45,373 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 03:02:45,373 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 03:02:45,377 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 03:02:45,378 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 03:02:45,378 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 03:02:45,378 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-28 03:02:45,379 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 03:02:45,379 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 03:02:45,379 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 03:02:45,380 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_78b0cf5a-38db-4b72-9fc2-4deaf0054828/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_78b0cf5a-38db-4b72-9fc2-4deaf0054828/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 94bd51eb56827c6c266b6ed4f7ea5182fc2e875c [2020-11-28 03:02:45,608 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 03:02:45,650 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 03:02:45,652 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 03:02:45,654 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 03:02:45,656 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 03:02:45,657 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_78b0cf5a-38db-4b72-9fc2-4deaf0054828/bin/uautomizer/../../sv-benchmarks/c/float-newlib/double_req_bl_1052c.c [2020-11-28 03:02:45,736 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_78b0cf5a-38db-4b72-9fc2-4deaf0054828/bin/uautomizer/data/a3422c96e/c3f9445288bc4047bf8a177962663165/FLAGc442a731b [2020-11-28 03:02:46,247 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 03:02:46,248 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_78b0cf5a-38db-4b72-9fc2-4deaf0054828/sv-benchmarks/c/float-newlib/double_req_bl_1052c.c [2020-11-28 03:02:46,255 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_78b0cf5a-38db-4b72-9fc2-4deaf0054828/bin/uautomizer/data/a3422c96e/c3f9445288bc4047bf8a177962663165/FLAGc442a731b [2020-11-28 03:02:46,632 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_78b0cf5a-38db-4b72-9fc2-4deaf0054828/bin/uautomizer/data/a3422c96e/c3f9445288bc4047bf8a177962663165 [2020-11-28 03:02:46,634 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 03:02:46,636 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 03:02:46,637 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 03:02:46,637 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 03:02:46,644 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 03:02:46,645 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:02:46" (1/1) ... [2020-11-28 03:02:46,648 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@312b54a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:02:46, skipping insertion in model container [2020-11-28 03:02:46,648 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:02:46" (1/1) ... [2020-11-28 03:02:46,681 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 03:02:46,722 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 03:02:46,936 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:02:46,946 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 03:02:46,995 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:02:47,016 INFO L208 MainTranslator]: Completed translation [2020-11-28 03:02:47,017 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:02:47 WrapperNode [2020-11-28 03:02:47,017 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 03:02:47,019 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 03:02:47,019 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 03:02:47,019 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 03:02:47,029 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:02:47" (1/1) ... [2020-11-28 03:02:47,043 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:02:47" (1/1) ... [2020-11-28 03:02:47,069 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 03:02:47,070 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 03:02:47,071 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 03:02:47,071 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 03:02:47,080 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:02:47" (1/1) ... [2020-11-28 03:02:47,081 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:02:47" (1/1) ... [2020-11-28 03:02:47,085 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:02:47" (1/1) ... [2020-11-28 03:02:47,085 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:02:47" (1/1) ... [2020-11-28 03:02:47,095 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:02:47" (1/1) ... [2020-11-28 03:02:47,101 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:02:47" (1/1) ... [2020-11-28 03:02:47,103 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:02:47" (1/1) ... [2020-11-28 03:02:47,107 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 03:02:47,108 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 03:02:47,108 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 03:02:47,108 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 03:02:47,110 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:02:47" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_78b0cf5a-38db-4b72-9fc2-4deaf0054828/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 [2020-11-28 03:02:47,201 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-28 03:02:47,201 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 03:02:47,201 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-11-28 03:02:47,201 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-28 03:02:47,201 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-11-28 03:02:47,201 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 03:02:47,201 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 03:02:47,202 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-28 03:02:47,202 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-28 03:02:47,744 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 03:02:47,744 INFO L298 CfgBuilder]: Removed 16 assume(true) statements. [2020-11-28 03:02:47,746 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:02:47 BoogieIcfgContainer [2020-11-28 03:02:47,746 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 03:02:47,748 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 03:02:47,748 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 03:02:47,757 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 03:02:47,757 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 03:02:46" (1/3) ... [2020-11-28 03:02:47,759 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d69be8d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:02:47, skipping insertion in model container [2020-11-28 03:02:47,759 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:02:47" (2/3) ... [2020-11-28 03:02:47,761 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d69be8d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:02:47, skipping insertion in model container [2020-11-28 03:02:47,761 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:02:47" (3/3) ... [2020-11-28 03:02:47,762 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1052c.c [2020-11-28 03:02:47,773 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 03:02:47,778 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-28 03:02:47,790 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-28 03:02:47,815 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 03:02:47,816 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 03:02:47,816 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 03:02:47,816 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 03:02:47,816 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 03:02:47,816 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 03:02:47,817 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 03:02:47,817 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 03:02:47,831 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states. [2020-11-28 03:02:47,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-28 03:02:47,836 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:02:47,836 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:02:47,837 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:02:47,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:02:47,841 INFO L82 PathProgramCache]: Analyzing trace with hash -1930029915, now seen corresponding path program 1 times [2020-11-28 03:02:47,850 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:02:47,850 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [674479489] [2020-11-28 03:02:47,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:02:47,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:02:47,984 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:02:47,984 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [674479489] [2020-11-28 03:02:47,985 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:02:47,985 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 03:02:47,986 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157302858] [2020-11-28 03:02:47,991 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-28 03:02:47,991 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:02:48,006 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-28 03:02:48,007 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-28 03:02:48,009 INFO L87 Difference]: Start difference. First operand 39 states. Second operand 2 states. [2020-11-28 03:02:48,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:02:48,030 INFO L93 Difference]: Finished difference Result 75 states and 119 transitions. [2020-11-28 03:02:48,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-28 03:02:48,032 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2020-11-28 03:02:48,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:02:48,042 INFO L225 Difference]: With dead ends: 75 [2020-11-28 03:02:48,043 INFO L226 Difference]: Without dead ends: 35 [2020-11-28 03:02:48,046 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 [2020-11-28 03:02:48,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-11-28 03:02:48,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2020-11-28 03:02:48,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-11-28 03:02:48,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 50 transitions. [2020-11-28 03:02:48,084 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 50 transitions. Word has length 11 [2020-11-28 03:02:48,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:02:48,085 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 50 transitions. [2020-11-28 03:02:48,085 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-28 03:02:48,085 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 50 transitions. [2020-11-28 03:02:48,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-28 03:02:48,086 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:02:48,086 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:02:48,086 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-28 03:02:48,087 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:02:48,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:02:48,088 INFO L82 PathProgramCache]: Analyzing trace with hash -1310108990, now seen corresponding path program 1 times [2020-11-28 03:02:48,088 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:02:48,088 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1837461854] [2020-11-28 03:02:48,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:02:48,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:02:48,151 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:02:48,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:02:48,212 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:02:48,259 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:02:48,259 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-28 03:02:48,260 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-28 03:02:48,308 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 03:02:48 BoogieIcfgContainer [2020-11-28 03:02:48,308 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 03:02:48,309 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 03:02:48,310 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 03:02:48,310 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 03:02:48,311 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:02:47" (3/4) ... [2020-11-28 03:02:48,314 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-28 03:02:48,314 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 03:02:48,318 INFO L168 Benchmark]: Toolchain (without parser) took 1679.60 ms. Allocated memory is still 88.1 MB. Free memory was 64.1 MB in the beginning and 59.0 MB in the end (delta: 5.1 MB). Peak memory consumption was 3.4 MB. Max. memory is 16.1 GB. [2020-11-28 03:02:48,319 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 73.4 MB. Free memory was 46.6 MB in the beginning and 46.5 MB in the end (delta: 49.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:02:48,320 INFO L168 Benchmark]: CACSL2BoogieTranslator took 380.51 ms. Allocated memory is still 88.1 MB. Free memory was 63.9 MB in the beginning and 57.8 MB in the end (delta: 6.1 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2020-11-28 03:02:48,322 INFO L168 Benchmark]: Boogie Procedure Inliner took 50.96 ms. Allocated memory is still 88.1 MB. Free memory was 57.8 MB in the beginning and 56.0 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:02:48,322 INFO L168 Benchmark]: Boogie Preprocessor took 36.64 ms. Allocated memory is still 88.1 MB. Free memory was 56.0 MB in the beginning and 54.5 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:02:48,324 INFO L168 Benchmark]: RCFGBuilder took 638.46 ms. Allocated memory is still 88.1 MB. Free memory was 54.4 MB in the beginning and 54.1 MB in the end (delta: 204.9 kB). Peak memory consumption was 14.4 MB. Max. memory is 16.1 GB. [2020-11-28 03:02:48,325 INFO L168 Benchmark]: TraceAbstraction took 560.36 ms. Allocated memory is still 88.1 MB. Free memory was 53.6 MB in the beginning and 59.1 MB in the end (delta: -5.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:02:48,326 INFO L168 Benchmark]: Witness Printer took 5.36 ms. Allocated memory is still 88.1 MB. Free memory was 59.1 MB in the beginning and 59.0 MB in the end (delta: 56.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:02:48,337 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 73.4 MB. Free memory was 46.6 MB in the beginning and 46.5 MB in the end (delta: 49.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 380.51 ms. Allocated memory is still 88.1 MB. Free memory was 63.9 MB in the beginning and 57.8 MB in the end (delta: 6.1 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 50.96 ms. Allocated memory is still 88.1 MB. Free memory was 57.8 MB in the beginning and 56.0 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 36.64 ms. Allocated memory is still 88.1 MB. Free memory was 56.0 MB in the beginning and 54.5 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 638.46 ms. Allocated memory is still 88.1 MB. Free memory was 54.4 MB in the beginning and 54.1 MB in the end (delta: 204.9 kB). Peak memory consumption was 14.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 560.36 ms. Allocated memory is still 88.1 MB. Free memory was 53.6 MB in the beginning and 59.1 MB in the end (delta: -5.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 5.36 ms. Allocated memory is still 88.1 MB. Free memory was 59.1 MB in the beginning and 59.0 MB in the end (delta: 56.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 3]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of shiftRight at line 39, overapproximation of bitwiseOr at line 40, overapproximation of someUnaryDOUBLEoperation at line 100, overapproximation of bitwiseAnd at line 27, overapproximation of someBinaryDOUBLEComparisonOperation at line 104. Possible FailurePath: [L16] static const double huge_floor = 1.0e300; VAL [huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L100] double x = -0.0; [L19] __int32_t i0, i1, j0; [L20] __uint32_t i, j; VAL [huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L22] ieee_double_shape_type ew_u; [L23] ew_u.value = (x) [L24] EXPR ew_u.parts.msw [L24] (i0) = ew_u.parts.msw [L25] EXPR ew_u.parts.lsw [L25] (i1) = ew_u.parts.lsw [L27] j0 = ((i0 >> 20) & 0x7ff) - 0x3ff VAL [huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L28] COND TRUE j0 < 20 VAL [huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L29] COND FALSE !(j0 < 0) [L39] i = (0x000fffff) >> j0 VAL [huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L40] COND TRUE ((i0 & i) | i1) == 0 [L41] return x; VAL [huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L101] double res = floor_double(x); [L104] EXPR res == -0.0 && __signbit_double(res) == 1 VAL [huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L104] COND TRUE !(res == -0.0 && __signbit_double(res) == 1) [L3] __assert_fail("0", "double_req_bl_1052c.c", 3, "reach_error") VAL [huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 39 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.4s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 53 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=39occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 23 NumberOfCodeBlocks, 23 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 10 ConstructedInterpolants, 0 QuantifiedInterpolants, 100 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.0-a4ecdab [2020-11-28 03:02:51,126 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 03:02:51,130 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 03:02:51,184 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 03:02:51,185 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 03:02:51,190 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 03:02:51,193 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 03:02:51,197 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 03:02:51,201 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 03:02:51,207 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 03:02:51,209 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 03:02:51,216 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 03:02:51,226 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 03:02:51,227 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 03:02:51,228 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 03:02:51,230 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 03:02:51,231 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 03:02:51,232 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 03:02:51,234 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 03:02:51,236 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 03:02:51,238 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 03:02:51,240 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 03:02:51,241 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 03:02:51,243 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 03:02:51,246 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 03:02:51,246 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 03:02:51,247 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 03:02:51,248 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 03:02:51,249 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 03:02:51,250 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 03:02:51,251 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 03:02:51,252 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 03:02:51,253 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 03:02:51,254 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 03:02:51,256 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 03:02:51,256 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 03:02:51,257 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 03:02:51,258 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 03:02:51,258 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 03:02:51,260 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 03:02:51,260 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 03:02:51,262 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_78b0cf5a-38db-4b72-9fc2-4deaf0054828/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-11-28 03:02:51,286 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 03:02:51,286 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 03:02:51,288 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-28 03:02:51,288 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-28 03:02:51,288 INFO L138 SettingsManager]: * Use SBE=true [2020-11-28 03:02:51,289 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 03:02:51,289 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 03:02:51,289 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 03:02:51,290 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 03:02:51,290 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 03:02:51,290 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 03:02:51,291 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 03:02:51,291 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-11-28 03:02:51,291 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-11-28 03:02:51,291 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 03:02:51,292 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 03:02:51,292 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 03:02:51,292 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 03:02:51,293 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 03:02:51,293 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-28 03:02:51,293 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 03:02:51,294 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 03:02:51,294 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 03:02:51,294 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 03:02:51,295 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 03:02:51,295 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 03:02:51,295 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-11-28 03:02:51,295 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-11-28 03:02:51,296 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 03:02:51,296 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 03:02:51,296 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-28 03:02:51,297 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_78b0cf5a-38db-4b72-9fc2-4deaf0054828/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_78b0cf5a-38db-4b72-9fc2-4deaf0054828/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 94bd51eb56827c6c266b6ed4f7ea5182fc2e875c [2020-11-28 03:02:51,733 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 03:02:51,777 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 03:02:51,782 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 03:02:51,784 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 03:02:51,785 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 03:02:51,786 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_78b0cf5a-38db-4b72-9fc2-4deaf0054828/bin/uautomizer/../../sv-benchmarks/c/float-newlib/double_req_bl_1052c.c [2020-11-28 03:02:51,868 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_78b0cf5a-38db-4b72-9fc2-4deaf0054828/bin/uautomizer/data/aeef1f967/f00af54c1f2b4b1a8fff8b5b6780c7e0/FLAG3687f0803 [2020-11-28 03:02:52,413 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 03:02:52,413 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_78b0cf5a-38db-4b72-9fc2-4deaf0054828/sv-benchmarks/c/float-newlib/double_req_bl_1052c.c [2020-11-28 03:02:52,423 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_78b0cf5a-38db-4b72-9fc2-4deaf0054828/bin/uautomizer/data/aeef1f967/f00af54c1f2b4b1a8fff8b5b6780c7e0/FLAG3687f0803 [2020-11-28 03:02:52,766 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_78b0cf5a-38db-4b72-9fc2-4deaf0054828/bin/uautomizer/data/aeef1f967/f00af54c1f2b4b1a8fff8b5b6780c7e0 [2020-11-28 03:02:52,768 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 03:02:52,771 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 03:02:52,775 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 03:02:52,775 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 03:02:52,779 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 03:02:52,781 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:02:52" (1/1) ... [2020-11-28 03:02:52,783 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5f2e8b84 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:02:52, skipping insertion in model container [2020-11-28 03:02:52,786 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:02:52" (1/1) ... [2020-11-28 03:02:52,793 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 03:02:52,816 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 03:02:53,020 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:02:53,032 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 03:02:53,063 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:02:53,124 INFO L208 MainTranslator]: Completed translation [2020-11-28 03:02:53,125 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:02:53 WrapperNode [2020-11-28 03:02:53,125 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 03:02:53,126 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 03:02:53,127 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 03:02:53,127 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 03:02:53,134 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:02:53" (1/1) ... [2020-11-28 03:02:53,145 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:02:53" (1/1) ... [2020-11-28 03:02:53,168 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 03:02:53,169 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 03:02:53,169 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 03:02:53,169 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 03:02:53,176 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:02:53" (1/1) ... [2020-11-28 03:02:53,176 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:02:53" (1/1) ... [2020-11-28 03:02:53,181 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:02:53" (1/1) ... [2020-11-28 03:02:53,181 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:02:53" (1/1) ... [2020-11-28 03:02:53,194 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:02:53" (1/1) ... [2020-11-28 03:02:53,198 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:02:53" (1/1) ... [2020-11-28 03:02:53,201 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:02:53" (1/1) ... [2020-11-28 03:02:53,205 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 03:02:53,206 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 03:02:53,207 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 03:02:53,207 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 03:02:53,207 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:02:53" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_78b0cf5a-38db-4b72-9fc2-4deaf0054828/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 [2020-11-28 03:02:53,271 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2020-11-28 03:02:53,272 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2020-11-28 03:02:53,272 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-11-28 03:02:53,272 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 03:02:53,272 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-11-28 03:02:53,272 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 03:02:53,272 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 03:02:53,272 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2020-11-28 03:02:53,272 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-28 03:02:54,886 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 03:02:54,887 INFO L298 CfgBuilder]: Removed 16 assume(true) statements. [2020-11-28 03:02:54,888 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:02:54 BoogieIcfgContainer [2020-11-28 03:02:54,888 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 03:02:54,890 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 03:02:54,891 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 03:02:54,894 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 03:02:54,894 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 03:02:52" (1/3) ... [2020-11-28 03:02:54,895 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@557cd9f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:02:54, skipping insertion in model container [2020-11-28 03:02:54,895 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:02:53" (2/3) ... [2020-11-28 03:02:54,896 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@557cd9f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:02:54, skipping insertion in model container [2020-11-28 03:02:54,896 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:02:54" (3/3) ... [2020-11-28 03:02:54,897 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1052c.c [2020-11-28 03:02:54,908 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 03:02:54,913 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-28 03:02:54,926 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-28 03:02:54,950 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 03:02:54,950 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 03:02:54,951 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 03:02:54,951 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 03:02:54,951 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 03:02:54,951 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 03:02:54,951 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 03:02:54,952 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 03:02:54,962 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states. [2020-11-28 03:02:54,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-28 03:02:54,966 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:02:54,966 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:02:54,966 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:02:54,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:02:54,971 INFO L82 PathProgramCache]: Analyzing trace with hash -1930029915, now seen corresponding path program 1 times [2020-11-28 03:02:54,979 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-28 03:02:54,979 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1171204929] [2020-11-28 03:02:54,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_78b0cf5a-38db-4b72-9fc2-4deaf0054828/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 [2020-11-28 03:02:55,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:02:55,082 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 1 conjunts are in the unsatisfiable core [2020-11-28 03:02:55,087 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:02:55,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:02:55,107 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 03:02:55,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:02:55,114 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1171204929] [2020-11-28 03:02:55,115 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:02:55,115 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-11-28 03:02:55,116 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241143483] [2020-11-28 03:02:55,121 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-28 03:02:55,121 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-28 03:02:55,139 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-28 03:02:55,140 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-28 03:02:55,142 INFO L87 Difference]: Start difference. First operand 39 states. Second operand 2 states. [2020-11-28 03:02:55,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:02:55,168 INFO L93 Difference]: Finished difference Result 75 states and 119 transitions. [2020-11-28 03:02:55,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-28 03:02:55,169 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2020-11-28 03:02:55,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:02:55,180 INFO L225 Difference]: With dead ends: 75 [2020-11-28 03:02:55,180 INFO L226 Difference]: Without dead ends: 35 [2020-11-28 03:02:55,183 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 [2020-11-28 03:02:55,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-11-28 03:02:55,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2020-11-28 03:02:55,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-11-28 03:02:55,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 50 transitions. [2020-11-28 03:02:55,218 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 50 transitions. Word has length 11 [2020-11-28 03:02:55,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:02:55,219 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 50 transitions. [2020-11-28 03:02:55,219 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-28 03:02:55,219 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 50 transitions. [2020-11-28 03:02:55,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-28 03:02:55,220 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:02:55,220 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:02:55,441 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-11-28 03:02:55,443 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:02:55,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:02:55,444 INFO L82 PathProgramCache]: Analyzing trace with hash -1310108990, now seen corresponding path program 1 times [2020-11-28 03:02:55,444 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-28 03:02:55,445 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [300680090] [2020-11-28 03:02:55,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_78b0cf5a-38db-4b72-9fc2-4deaf0054828/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 [2020-11-28 03:02:55,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:02:55,554 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-28 03:02:55,556 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:02:55,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:02:55,770 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 03:02:55,889 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:02:55,890 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [300680090] [2020-11-28 03:02:55,890 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:02:55,890 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2020-11-28 03:02:55,890 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347600826] [2020-11-28 03:02:55,892 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-28 03:02:55,892 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-28 03:02:55,893 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-28 03:02:55,893 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-11-28 03:02:55,894 INFO L87 Difference]: Start difference. First operand 35 states and 50 transitions. Second operand 8 states. [2020-11-28 03:02:56,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:02:56,464 INFO L93 Difference]: Finished difference Result 59 states and 74 transitions. [2020-11-28 03:02:56,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-28 03:02:56,465 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 12 [2020-11-28 03:02:56,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:02:56,466 INFO L225 Difference]: With dead ends: 59 [2020-11-28 03:02:56,466 INFO L226 Difference]: Without dead ends: 34 [2020-11-28 03:02:56,467 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2020-11-28 03:02:56,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-11-28 03:02:56,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 22. [2020-11-28 03:02:56,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-11-28 03:02:56,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 24 transitions. [2020-11-28 03:02:56,474 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 24 transitions. Word has length 12 [2020-11-28 03:02:56,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:02:56,474 INFO L481 AbstractCegarLoop]: Abstraction has 22 states and 24 transitions. [2020-11-28 03:02:56,474 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-28 03:02:56,475 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 24 transitions. [2020-11-28 03:02:56,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-28 03:02:56,475 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:02:56,475 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:02:56,694 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-11-28 03:02:56,695 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:02:56,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:02:56,697 INFO L82 PathProgramCache]: Analyzing trace with hash -649381144, now seen corresponding path program 1 times [2020-11-28 03:02:56,698 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-28 03:02:56,699 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [617149753] [2020-11-28 03:02:56,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_78b0cf5a-38db-4b72-9fc2-4deaf0054828/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 [2020-11-28 03:02:56,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:02:56,876 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 6 conjunts are in the unsatisfiable core [2020-11-28 03:02:56,878 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:02:56,960 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:02:56,961 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 03:02:57,811 WARN L193 SmtUtils]: Spent 332.00 ms on a formula simplification that was a NOOP. DAG size: 6 [2020-11-28 03:02:58,134 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:02:58,135 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [617149753] [2020-11-28 03:02:58,135 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:02:58,135 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2020-11-28 03:02:58,136 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286440193] [2020-11-28 03:02:58,136 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-28 03:02:58,136 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-28 03:02:58,137 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-28 03:02:58,137 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-11-28 03:02:58,137 INFO L87 Difference]: Start difference. First operand 22 states and 24 transitions. Second operand 6 states. [2020-11-28 03:02:58,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:02:58,499 INFO L93 Difference]: Finished difference Result 34 states and 36 transitions. [2020-11-28 03:02:58,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 03:02:58,509 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-11-28 03:02:58,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:02:58,509 INFO L225 Difference]: With dead ends: 34 [2020-11-28 03:02:58,510 INFO L226 Difference]: Without dead ends: 22 [2020-11-28 03:02:58,510 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-11-28 03:02:58,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2020-11-28 03:02:58,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2020-11-28 03:02:58,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-11-28 03:02:58,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 23 transitions. [2020-11-28 03:02:58,516 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 23 transitions. Word has length 15 [2020-11-28 03:02:58,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:02:58,517 INFO L481 AbstractCegarLoop]: Abstraction has 22 states and 23 transitions. [2020-11-28 03:02:58,517 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-28 03:02:58,517 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 23 transitions. [2020-11-28 03:02:58,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-28 03:02:58,518 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:02:58,518 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:02:58,726 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-11-28 03:02:58,726 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:02:58,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:02:58,727 INFO L82 PathProgramCache]: Analyzing trace with hash 461150674, now seen corresponding path program 1 times [2020-11-28 03:02:58,727 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-28 03:02:58,727 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1172986227] [2020-11-28 03:02:58,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_78b0cf5a-38db-4b72-9fc2-4deaf0054828/bin/uautomizer/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2020-11-28 03:02:58,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:02:58,956 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:02:59,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:02:59,144 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:02:59,193 INFO L173 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2020-11-28 03:02:59,193 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-28 03:02:59,394 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-11-28 03:02:59,435 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 03:02:59 BoogieIcfgContainer [2020-11-28 03:02:59,436 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 03:02:59,437 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 03:02:59,437 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 03:02:59,438 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 03:02:59,438 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:02:54" (3/4) ... [2020-11-28 03:02:59,441 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-28 03:02:59,513 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_78b0cf5a-38db-4b72-9fc2-4deaf0054828/bin/uautomizer/witness.graphml [2020-11-28 03:02:59,513 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 03:02:59,515 INFO L168 Benchmark]: Toolchain (without parser) took 6743.03 ms. Allocated memory was 58.7 MB in the beginning and 71.3 MB in the end (delta: 12.6 MB). Free memory was 36.7 MB in the beginning and 25.2 MB in the end (delta: 11.4 MB). Peak memory consumption was 23.0 MB. Max. memory is 16.1 GB. [2020-11-28 03:02:59,515 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 58.7 MB. Free memory is still 40.2 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:02:59,519 INFO L168 Benchmark]: CACSL2BoogieTranslator took 350.66 ms. Allocated memory is still 58.7 MB. Free memory was 36.5 MB in the beginning and 41.1 MB in the end (delta: -4.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2020-11-28 03:02:59,520 INFO L168 Benchmark]: Boogie Procedure Inliner took 42.08 ms. Allocated memory is still 58.7 MB. Free memory was 40.9 MB in the beginning and 39.3 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:02:59,520 INFO L168 Benchmark]: Boogie Preprocessor took 36.57 ms. Allocated memory is still 58.7 MB. Free memory was 39.3 MB in the beginning and 37.4 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:02:59,521 INFO L168 Benchmark]: RCFGBuilder took 1682.25 ms. Allocated memory was 58.7 MB in the beginning and 71.3 MB in the end (delta: 12.6 MB). Free memory was 37.4 MB in the beginning and 45.3 MB in the end (delta: -7.9 MB). Peak memory consumption was 18.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:02:59,521 INFO L168 Benchmark]: TraceAbstraction took 4545.73 ms. Allocated memory is still 71.3 MB. Free memory was 44.7 MB in the beginning and 28.3 MB in the end (delta: 16.4 MB). Peak memory consumption was 16.0 MB. Max. memory is 16.1 GB. [2020-11-28 03:02:59,522 INFO L168 Benchmark]: Witness Printer took 76.75 ms. Allocated memory is still 71.3 MB. Free memory was 28.3 MB in the beginning and 25.2 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:02:59,525 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 58.7 MB. Free memory is still 40.2 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 350.66 ms. Allocated memory is still 58.7 MB. Free memory was 36.5 MB in the beginning and 41.1 MB in the end (delta: -4.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 42.08 ms. Allocated memory is still 58.7 MB. Free memory was 40.9 MB in the beginning and 39.3 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 36.57 ms. Allocated memory is still 58.7 MB. Free memory was 39.3 MB in the beginning and 37.4 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1682.25 ms. Allocated memory was 58.7 MB in the beginning and 71.3 MB in the end (delta: 12.6 MB). Free memory was 37.4 MB in the beginning and 45.3 MB in the end (delta: -7.9 MB). Peak memory consumption was 18.1 MB. Max. memory is 16.1 GB. * TraceAbstraction took 4545.73 ms. Allocated memory is still 71.3 MB. Free memory was 44.7 MB in the beginning and 28.3 MB in the end (delta: 16.4 MB). Peak memory consumption was 16.0 MB. Max. memory is 16.1 GB. * Witness Printer took 76.75 ms. Allocated memory is still 71.3 MB. Free memory was 28.3 MB in the beginning and 25.2 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 3]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L16] static const double huge_floor = 1.0e300; VAL [huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L100] double x = -0.0; [L19] __int32_t i0, i1, j0; [L20] __uint32_t i, j; VAL [huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L22] ieee_double_shape_type ew_u; [L23] ew_u.value = (x) [L24] EXPR ew_u.parts.msw [L24] (i0) = ew_u.parts.msw [L25] EXPR ew_u.parts.lsw [L25] (i1) = ew_u.parts.lsw [L27] j0 = ((i0 >> 20) & 0x7ff) - 0x3ff VAL [huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L28] COND TRUE j0 < 20 VAL [huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L29] COND TRUE j0 < 0 VAL [huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L30] COND TRUE huge_floor + x > 0.0 VAL [huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L31] COND FALSE !(i0 >= 0) VAL [huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L33] COND TRUE ((i0 & 0x7fffffff) | i1) != 0 [L34] i0 = 0xbff00000 [L35] i1 = 0 VAL [huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L73] ieee_double_shape_type iw_u; [L74] iw_u.parts.msw = (i0) [L75] iw_u.parts.lsw = (i1) [L76] EXPR iw_u.value [L76] (x) = iw_u.value [L78] return x; VAL [huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L101] double res = floor_double(x); [L104] EXPR res == -0.0 && __signbit_double(res) == 1 VAL [huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L104] COND TRUE !(res == -0.0 && __signbit_double(res) == 1) [L3] __assert_fail("0", "double_req_bl_1052c.c", 3, "reach_error") VAL [huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 39 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 4.4s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 1.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 87 SDtfs, 105 SDslu, 59 SDs, 0 SdLazy, 30 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 74 GetRequests, 59 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 1.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=39occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 12 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 1.6s InterpolantComputationTime, 55 NumberOfCodeBlocks, 55 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 70 ConstructedInterpolants, 5 QuantifiedInterpolants, 3734 SizeOfPredicates, 11 NumberOfNonLiveVariables, 147 ConjunctsInSsa, 15 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...