./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/double_req_bl_1210.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_28def472-6885-42ad-a4c5-0d466027658e/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_28def472-6885-42ad-a4c5-0d466027658e/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_28def472-6885-42ad-a4c5-0d466027658e/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_28def472-6885-42ad-a4c5-0d466027658e/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1210.c -s /tmp/vcloud-vcloud-master/worker/run_dir_28def472-6885-42ad-a4c5-0d466027658e/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_28def472-6885-42ad-a4c5-0d466027658e/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 85e5b86abce931d95696fba33e25199d528f9f0e ..................................................................................................................................................................................................................................................................................................................................................... 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_28def472-6885-42ad-a4c5-0d466027658e/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_28def472-6885-42ad-a4c5-0d466027658e/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_28def472-6885-42ad-a4c5-0d466027658e/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_28def472-6885-42ad-a4c5-0d466027658e/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1210.c -s /tmp/vcloud-vcloud-master/worker/run_dir_28def472-6885-42ad-a4c5-0d466027658e/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_28def472-6885-42ad-a4c5-0d466027658e/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 85e5b86abce931d95696fba33e25199d528f9f0e ........................................................................................................................................................................................................................................................................................................................................................................................................................... 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 [2020-11-30 00:14:48,149 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 00:14:48,169 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 00:14:48,234 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 00:14:48,235 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 00:14:48,241 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 00:14:48,245 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 00:14:48,249 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 00:14:48,252 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 00:14:48,261 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 00:14:48,262 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 00:14:48,265 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 00:14:48,265 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 00:14:48,270 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 00:14:48,271 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 00:14:48,274 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 00:14:48,275 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 00:14:48,281 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 00:14:48,285 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 00:14:48,292 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 00:14:48,294 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 00:14:48,297 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 00:14:48,299 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 00:14:48,300 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 00:14:48,304 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 00:14:48,305 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 00:14:48,305 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 00:14:48,308 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 00:14:48,308 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 00:14:48,309 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 00:14:48,310 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 00:14:48,311 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 00:14:48,313 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 00:14:48,315 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 00:14:48,316 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 00:14:48,317 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 00:14:48,318 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 00:14:48,318 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 00:14:48,318 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 00:14:48,320 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 00:14:48,321 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 00:14:48,324 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_28def472-6885-42ad-a4c5-0d466027658e/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-30 00:14:48,369 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 00:14:48,369 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 00:14:48,372 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-30 00:14:48,372 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-30 00:14:48,372 INFO L138 SettingsManager]: * Use SBE=true [2020-11-30 00:14:48,373 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 00:14:48,373 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-30 00:14:48,373 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-30 00:14:48,373 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-30 00:14:48,373 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 00:14:48,375 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-30 00:14:48,375 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-30 00:14:48,375 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-30 00:14:48,375 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-30 00:14:48,376 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-30 00:14:48,376 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 00:14:48,376 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-30 00:14:48,376 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 00:14:48,377 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-30 00:14:48,377 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-30 00:14:48,377 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-30 00:14:48,377 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 00:14:48,378 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 00:14:48,378 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-30 00:14:48,378 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-30 00:14:48,378 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-30 00:14:48,378 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-30 00:14:48,379 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-30 00:14:48,379 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 00:14:48,379 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_28def472-6885-42ad-a4c5-0d466027658e/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_28def472-6885-42ad-a4c5-0d466027658e/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 85e5b86abce931d95696fba33e25199d528f9f0e [2020-11-30 00:14:48,672 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 00:14:48,705 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 00:14:48,710 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 00:14:48,711 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 00:14:48,712 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 00:14:48,713 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_28def472-6885-42ad-a4c5-0d466027658e/bin/uautomizer/../../sv-benchmarks/c/float-newlib/double_req_bl_1210.c [2020-11-30 00:14:48,802 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_28def472-6885-42ad-a4c5-0d466027658e/bin/uautomizer/data/608114e20/9491e1ad513e4985921a0e7f96d084ae/FLAG41001ea4a [2020-11-30 00:14:49,332 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 00:14:49,333 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_28def472-6885-42ad-a4c5-0d466027658e/sv-benchmarks/c/float-newlib/double_req_bl_1210.c [2020-11-30 00:14:49,347 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_28def472-6885-42ad-a4c5-0d466027658e/bin/uautomizer/data/608114e20/9491e1ad513e4985921a0e7f96d084ae/FLAG41001ea4a [2020-11-30 00:14:49,689 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_28def472-6885-42ad-a4c5-0d466027658e/bin/uautomizer/data/608114e20/9491e1ad513e4985921a0e7f96d084ae [2020-11-30 00:14:49,692 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 00:14:49,693 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-30 00:14:49,708 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 00:14:49,708 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 00:14:49,712 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 00:14:49,713 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 12:14:49" (1/1) ... [2020-11-30 00:14:49,715 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f6cf714 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:14:49, skipping insertion in model container [2020-11-30 00:14:49,715 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 12:14:49" (1/1) ... [2020-11-30 00:14:49,723 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 00:14:49,746 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 00:14:49,965 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 00:14:49,976 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 00:14:50,017 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 00:14:50,034 INFO L208 MainTranslator]: Completed translation [2020-11-30 00:14:50,035 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:14:50 WrapperNode [2020-11-30 00:14:50,035 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 00:14:50,036 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-30 00:14:50,037 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-30 00:14:50,037 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-30 00:14:50,051 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:14:50" (1/1) ... [2020-11-30 00:14:50,078 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:14:50" (1/1) ... [2020-11-30 00:14:50,121 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-30 00:14:50,125 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 00:14:50,126 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 00:14:50,126 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 00:14:50,135 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:14:50" (1/1) ... [2020-11-30 00:14:50,135 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:14:50" (1/1) ... [2020-11-30 00:14:50,149 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:14:50" (1/1) ... [2020-11-30 00:14:50,149 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:14:50" (1/1) ... [2020-11-30 00:14:50,168 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:14:50" (1/1) ... [2020-11-30 00:14:50,174 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:14:50" (1/1) ... [2020-11-30 00:14:50,177 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:14:50" (1/1) ... [2020-11-30 00:14:50,181 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 00:14:50,182 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 00:14:50,182 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 00:14:50,183 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 00:14:50,184 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:14:50" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_28def472-6885-42ad-a4c5-0d466027658e/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 00:14:50,250 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-30 00:14:50,251 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-30 00:14:50,251 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-11-30 00:14:50,251 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-30 00:14:50,251 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-11-30 00:14:50,251 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 00:14:50,251 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 00:14:50,252 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-30 00:14:50,252 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-30 00:14:50,941 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 00:14:50,944 INFO L298 CfgBuilder]: Removed 32 assume(true) statements. [2020-11-30 00:14:50,946 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:14:50 BoogieIcfgContainer [2020-11-30 00:14:50,947 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 00:14:50,949 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-30 00:14:50,950 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-30 00:14:50,954 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-30 00:14:50,955 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 12:14:49" (1/3) ... [2020-11-30 00:14:50,956 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38b49552 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 12:14:50, skipping insertion in model container [2020-11-30 00:14:50,956 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:14:50" (2/3) ... [2020-11-30 00:14:50,956 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38b49552 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 12:14:50, skipping insertion in model container [2020-11-30 00:14:50,957 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:14:50" (3/3) ... [2020-11-30 00:14:50,959 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1210.c [2020-11-30 00:14:50,972 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-30 00:14:50,977 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-30 00:14:50,994 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-30 00:14:51,019 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-30 00:14:51,020 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-30 00:14:51,020 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-30 00:14:51,020 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 00:14:51,020 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 00:14:51,020 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-30 00:14:51,020 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 00:14:51,021 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-30 00:14:51,037 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states. [2020-11-30 00:14:51,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-30 00:14:51,062 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:14:51,063 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:14:51,063 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:14:51,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:14:51,074 INFO L82 PathProgramCache]: Analyzing trace with hash -1560975081, now seen corresponding path program 1 times [2020-11-30 00:14:51,085 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:14:51,086 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670518772] [2020-11-30 00:14:51,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:14:51,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:14:51,304 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:14:51,305 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [670518772] [2020-11-30 00:14:51,306 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:14:51,306 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-30 00:14:51,307 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179668184] [2020-11-30 00:14:51,312 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-30 00:14:51,312 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:14:51,329 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-30 00:14:51,330 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-30 00:14:51,332 INFO L87 Difference]: Start difference. First operand 45 states. Second operand 2 states. [2020-11-30 00:14:51,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:14:51,366 INFO L93 Difference]: Finished difference Result 87 states and 139 transitions. [2020-11-30 00:14:51,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-30 00:14:51,368 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 13 [2020-11-30 00:14:51,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:14:51,385 INFO L225 Difference]: With dead ends: 87 [2020-11-30 00:14:51,386 INFO L226 Difference]: Without dead ends: 41 [2020-11-30 00:14:51,394 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-30 00:14:51,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-11-30 00:14:51,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2020-11-30 00:14:51,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-11-30 00:14:51,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 46 transitions. [2020-11-30 00:14:51,454 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 46 transitions. Word has length 13 [2020-11-30 00:14:51,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:14:51,456 INFO L481 AbstractCegarLoop]: Abstraction has 41 states and 46 transitions. [2020-11-30 00:14:51,456 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-30 00:14:51,456 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 46 transitions. [2020-11-30 00:14:51,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-30 00:14:51,458 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:14:51,459 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:14:51,459 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-30 00:14:51,460 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:14:51,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:14:51,463 INFO L82 PathProgramCache]: Analyzing trace with hash -11965906, now seen corresponding path program 1 times [2020-11-30 00:14:51,463 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:14:51,464 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [529563727] [2020-11-30 00:14:51,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:14:51,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:14:51,569 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:14:51,570 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [529563727] [2020-11-30 00:14:51,570 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:14:51,570 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-30 00:14:51,570 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342813276] [2020-11-30 00:14:51,572 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 00:14:51,572 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:14:51,573 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 00:14:51,573 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 00:14:51,573 INFO L87 Difference]: Start difference. First operand 41 states and 46 transitions. Second operand 3 states. [2020-11-30 00:14:51,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:14:51,615 INFO L93 Difference]: Finished difference Result 44 states and 48 transitions. [2020-11-30 00:14:51,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 00:14:51,618 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 15 [2020-11-30 00:14:51,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:14:51,619 INFO L225 Difference]: With dead ends: 44 [2020-11-30 00:14:51,619 INFO L226 Difference]: Without dead ends: 41 [2020-11-30 00:14:51,620 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 00:14:51,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-11-30 00:14:51,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2020-11-30 00:14:51,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-11-30 00:14:51,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 45 transitions. [2020-11-30 00:14:51,632 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 45 transitions. Word has length 15 [2020-11-30 00:14:51,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:14:51,634 INFO L481 AbstractCegarLoop]: Abstraction has 41 states and 45 transitions. [2020-11-30 00:14:51,635 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 00:14:51,635 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 45 transitions. [2020-11-30 00:14:51,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-30 00:14:51,638 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:14:51,639 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:14:51,639 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-30 00:14:51,640 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:14:51,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:14:51,641 INFO L82 PathProgramCache]: Analyzing trace with hash -371067880, now seen corresponding path program 1 times [2020-11-30 00:14:51,641 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:14:51,641 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977027011] [2020-11-30 00:14:51,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:14:51,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:14:51,738 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:14:51,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:14:51,801 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:14:51,832 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:14:51,833 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-30 00:14:51,833 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-30 00:14:51,884 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.11 12:14:51 BoogieIcfgContainer [2020-11-30 00:14:51,884 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-30 00:14:51,885 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 00:14:51,885 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 00:14:51,886 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 00:14:51,886 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:14:50" (3/4) ... [2020-11-30 00:14:51,890 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-30 00:14:51,890 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 00:14:51,895 INFO L168 Benchmark]: Toolchain (without parser) took 2197.59 ms. Allocated memory is still 98.6 MB. Free memory was 67.0 MB in the beginning and 46.6 MB in the end (delta: 20.4 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. [2020-11-30 00:14:51,896 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 81.8 MB. Free memory was 52.8 MB in the beginning and 52.8 MB in the end (delta: 26.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:14:51,899 INFO L168 Benchmark]: CACSL2BoogieTranslator took 327.42 ms. Allocated memory is still 98.6 MB. Free memory was 67.0 MB in the beginning and 73.8 MB in the end (delta: -6.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-30 00:14:51,899 INFO L168 Benchmark]: Boogie Procedure Inliner took 88.08 ms. Allocated memory is still 98.6 MB. Free memory was 73.8 MB in the beginning and 71.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 00:14:51,902 INFO L168 Benchmark]: Boogie Preprocessor took 55.85 ms. Allocated memory is still 98.6 MB. Free memory was 71.7 MB in the beginning and 69.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 00:14:51,903 INFO L168 Benchmark]: RCFGBuilder took 764.76 ms. Allocated memory is still 98.6 MB. Free memory was 69.6 MB in the beginning and 39.6 MB in the end (delta: 30.0 MB). Peak memory consumption was 29.4 MB. Max. memory is 16.1 GB. [2020-11-30 00:14:51,904 INFO L168 Benchmark]: TraceAbstraction took 935.32 ms. Allocated memory is still 98.6 MB. Free memory was 39.4 MB in the beginning and 47.3 MB in the end (delta: -7.9 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:14:51,906 INFO L168 Benchmark]: Witness Printer took 4.82 ms. Allocated memory is still 98.6 MB. Free memory was 47.3 MB in the beginning and 46.6 MB in the end (delta: 679.8 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 00:14:51,910 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 81.8 MB. Free memory was 52.8 MB in the beginning and 52.8 MB in the end (delta: 26.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 327.42 ms. Allocated memory is still 98.6 MB. Free memory was 67.0 MB in the beginning and 73.8 MB in the end (delta: -6.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 88.08 ms. Allocated memory is still 98.6 MB. Free memory was 73.8 MB in the beginning and 71.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 55.85 ms. Allocated memory is still 98.6 MB. Free memory was 71.7 MB in the beginning and 69.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 764.76 ms. Allocated memory is still 98.6 MB. Free memory was 69.6 MB in the beginning and 39.6 MB in the end (delta: 30.0 MB). Peak memory consumption was 29.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 935.32 ms. Allocated memory is still 98.6 MB. Free memory was 39.4 MB in the beginning and 47.3 MB in the end (delta: -7.9 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 4.82 ms. Allocated memory is still 98.6 MB. Free memory was 47.3 MB in the beginning and 46.6 MB in the end (delta: 679.8 kB). Peak memory consumption was 2.1 MB. 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 someBinaryDOUBLEComparisonOperation at line 17, overapproximation of someBinaryArithmeticDOUBLEoperation at line 118, overapproximation of bitwiseAnd at line 35. Possible FailurePath: [L19] static const double one_modf = 1.0; VAL [one_modf=1] [L118] double x = 0.0 / 0.0; [L119] double iptr; [L22] __int32_t i0, i1, j0; [L23] __uint32_t i; VAL [one_modf=1] [L25] ieee_double_shape_type ew_u; [L26] ew_u.value = (x) [L27] EXPR ew_u.parts.msw [L27] (i0) = ew_u.parts.msw [L28] EXPR ew_u.parts.lsw [L28] (i1) = ew_u.parts.lsw [L30] j0 = ((i0 >> 20) & 0x7ff) - 0x3ff VAL [one_modf=1] [L31] COND TRUE j0 < 20 VAL [one_modf=1] [L32] COND TRUE j0 < 0 VAL [one_modf=1] [L34] ieee_double_shape_type iw_u; [L35] iw_u.parts.msw = (i0 & 0x80000000) [L36] iw_u.parts.lsw = (0) [L37] EXPR iw_u.value [L37] (*iptr) = iw_u.value [L39] return x; VAL [one_modf=1] [L120] double res = modf_double(x, &iptr); [L123] EXPR \read(iptr) [L17] return x != x; VAL [one_modf=1] [L123] isnan_double(iptr) && !isnan_double(res) [L17] return x != x; VAL [one_modf=1] [L123] isnan_double(iptr) && !isnan_double(res) VAL [one_modf=1] [L123] COND TRUE isnan_double(iptr) && !isnan_double(res) [L3] __assert_fail("0", "double_req_bl_1210.c", 3, "reach_error") VAL [one_modf=1] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 45 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.8s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 95 SDtfs, 0 SDslu, 40 SDs, 0 SdLazy, 5 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=45occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 44 NumberOfCodeBlocks, 44 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 26 ConstructedInterpolants, 0 QuantifiedInterpolants, 354 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.0-a4ecdab [2020-11-30 00:14:54,675 INFO L177 SettingsManager]: Resetting all preferences to default values... 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[2020-11-30 00:14:54,831 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 00:14:54,833 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 00:14:54,835 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 00:14:54,836 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 00:14:54,837 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 00:14:54,838 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 00:14:54,839 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 00:14:54,839 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 00:14:54,839 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 00:14:54,842 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 00:14:54,843 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 00:14:54,844 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_28def472-6885-42ad-a4c5-0d466027658e/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-11-30 00:14:54,892 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 00:14:54,892 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 00:14:54,896 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-30 00:14:54,897 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-30 00:14:54,897 INFO L138 SettingsManager]: * Use SBE=true [2020-11-30 00:14:54,897 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 00:14:54,898 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-30 00:14:54,898 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-30 00:14:54,898 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 00:14:54,898 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-30 00:14:54,900 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-30 00:14:54,900 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-30 00:14:54,901 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-11-30 00:14:54,901 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-11-30 00:14:54,901 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-30 00:14:54,901 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-30 00:14:54,902 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 00:14:54,902 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-30 00:14:54,902 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 00:14:54,902 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-30 00:14:54,903 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-30 00:14:54,903 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-30 00:14:54,923 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 00:14:54,923 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 00:14:54,923 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-30 00:14:54,924 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-30 00:14:54,924 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-11-30 00:14:54,924 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-11-30 00:14:54,924 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-30 00:14:54,925 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 00:14:54,925 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-30 00:14:54,925 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_28def472-6885-42ad-a4c5-0d466027658e/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_28def472-6885-42ad-a4c5-0d466027658e/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 85e5b86abce931d95696fba33e25199d528f9f0e [2020-11-30 00:14:55,347 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 00:14:55,381 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 00:14:55,386 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 00:14:55,389 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 00:14:55,390 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 00:14:55,391 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_28def472-6885-42ad-a4c5-0d466027658e/bin/uautomizer/../../sv-benchmarks/c/float-newlib/double_req_bl_1210.c [2020-11-30 00:14:55,463 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_28def472-6885-42ad-a4c5-0d466027658e/bin/uautomizer/data/2ddfeeffa/3af8d9064081470c81b53325b3b72a1e/FLAG8a2ed1094 [2020-11-30 00:14:56,185 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 00:14:56,185 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_28def472-6885-42ad-a4c5-0d466027658e/sv-benchmarks/c/float-newlib/double_req_bl_1210.c [2020-11-30 00:14:56,197 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_28def472-6885-42ad-a4c5-0d466027658e/bin/uautomizer/data/2ddfeeffa/3af8d9064081470c81b53325b3b72a1e/FLAG8a2ed1094 [2020-11-30 00:14:56,546 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_28def472-6885-42ad-a4c5-0d466027658e/bin/uautomizer/data/2ddfeeffa/3af8d9064081470c81b53325b3b72a1e [2020-11-30 00:14:56,549 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 00:14:56,552 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-30 00:14:56,555 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 00:14:56,556 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 00:14:56,561 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 00:14:56,562 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 12:14:56" (1/1) ... [2020-11-30 00:14:56,564 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@66a3a9c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:14:56, skipping insertion in model container [2020-11-30 00:14:56,564 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 12:14:56" (1/1) ... [2020-11-30 00:14:56,574 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 00:14:56,613 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 00:14:56,798 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 00:14:56,833 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 00:14:56,885 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 00:14:56,926 INFO L208 MainTranslator]: Completed translation [2020-11-30 00:14:56,927 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:14:56 WrapperNode [2020-11-30 00:14:56,928 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 00:14:56,931 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-30 00:14:56,931 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-30 00:14:56,933 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-30 00:14:56,942 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:14:56" (1/1) ... [2020-11-30 00:14:56,974 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:14:56" (1/1) ... [2020-11-30 00:14:57,020 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-30 00:14:57,021 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 00:14:57,022 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 00:14:57,022 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 00:14:57,032 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:14:56" (1/1) ... [2020-11-30 00:14:57,032 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:14:56" (1/1) ... [2020-11-30 00:14:57,038 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:14:56" (1/1) ... [2020-11-30 00:14:57,039 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:14:56" (1/1) ... [2020-11-30 00:14:57,054 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:14:56" (1/1) ... [2020-11-30 00:14:57,071 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:14:56" (1/1) ... [2020-11-30 00:14:57,075 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:14:56" (1/1) ... [2020-11-30 00:14:57,085 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 00:14:57,086 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 00:14:57,086 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 00:14:57,087 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 00:14:57,087 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:14:56" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_28def472-6885-42ad-a4c5-0d466027658e/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 00:14:57,145 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2020-11-30 00:14:57,145 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2020-11-30 00:14:57,145 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-11-30 00:14:57,146 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-30 00:14:57,146 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-11-30 00:14:57,146 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 00:14:57,146 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 00:14:57,147 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2020-11-30 00:14:57,147 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-30 00:14:58,826 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 00:14:58,827 INFO L298 CfgBuilder]: Removed 32 assume(true) statements. [2020-11-30 00:14:58,831 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:14:58 BoogieIcfgContainer [2020-11-30 00:14:58,831 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 00:14:58,833 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-30 00:14:58,833 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-30 00:14:58,838 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-30 00:14:58,838 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 12:14:56" (1/3) ... [2020-11-30 00:14:58,839 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27b0a9e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 12:14:58, skipping insertion in model container [2020-11-30 00:14:58,840 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:14:56" (2/3) ... [2020-11-30 00:14:58,840 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27b0a9e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 12:14:58, skipping insertion in model container [2020-11-30 00:14:58,841 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:14:58" (3/3) ... [2020-11-30 00:14:58,845 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1210.c [2020-11-30 00:14:58,857 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-30 00:14:58,862 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-30 00:14:58,875 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-30 00:14:58,899 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-30 00:14:58,899 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-30 00:14:58,900 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-30 00:14:58,900 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 00:14:58,900 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 00:14:58,900 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-30 00:14:58,900 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 00:14:58,900 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-30 00:14:58,915 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states. [2020-11-30 00:14:58,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-30 00:14:58,924 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:14:58,925 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:14:58,925 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:14:58,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:14:58,931 INFO L82 PathProgramCache]: Analyzing trace with hash -1560975081, now seen corresponding path program 1 times [2020-11-30 00:14:58,943 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-30 00:14:58,944 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1805470943] [2020-11-30 00:14:58,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_28def472-6885-42ad-a4c5-0d466027658e/bin/uautomizer/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2020-11-30 00:14:59,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:14:59,105 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 1 conjunts are in the unsatisfiable core [2020-11-30 00:14:59,110 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:14:59,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:14:59,130 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 00:14:59,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:14:59,138 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1805470943] [2020-11-30 00:14:59,139 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:14:59,140 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-11-30 00:14:59,141 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796081642] [2020-11-30 00:14:59,147 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-30 00:14:59,147 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-30 00:14:59,167 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-30 00:14:59,169 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-30 00:14:59,171 INFO L87 Difference]: Start difference. First operand 45 states. Second operand 2 states. [2020-11-30 00:14:59,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:14:59,214 INFO L93 Difference]: Finished difference Result 87 states and 139 transitions. [2020-11-30 00:14:59,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-30 00:14:59,215 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 13 [2020-11-30 00:14:59,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:14:59,226 INFO L225 Difference]: With dead ends: 87 [2020-11-30 00:14:59,226 INFO L226 Difference]: Without dead ends: 41 [2020-11-30 00:14:59,233 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-30 00:14:59,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-11-30 00:14:59,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2020-11-30 00:14:59,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-11-30 00:14:59,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 46 transitions. [2020-11-30 00:14:59,284 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 46 transitions. Word has length 13 [2020-11-30 00:14:59,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:14:59,286 INFO L481 AbstractCegarLoop]: Abstraction has 41 states and 46 transitions. [2020-11-30 00:14:59,286 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-30 00:14:59,286 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 46 transitions. [2020-11-30 00:14:59,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-30 00:14:59,289 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:14:59,289 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:14:59,502 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-11-30 00:14:59,502 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:14:59,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:14:59,503 INFO L82 PathProgramCache]: Analyzing trace with hash -11965906, now seen corresponding path program 1 times [2020-11-30 00:14:59,504 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-30 00:14:59,505 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1064945881] [2020-11-30 00:14:59,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_28def472-6885-42ad-a4c5-0d466027658e/bin/uautomizer/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2020-11-30 00:14:59,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:14:59,708 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-30 00:14:59,710 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:14:59,933 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:14:59,933 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 00:15:00,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:15:00,123 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1064945881] [2020-11-30 00:15:00,123 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:15:00,124 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2020-11-30 00:15:00,124 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572177724] [2020-11-30 00:15:00,125 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-30 00:15:00,126 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-30 00:15:00,126 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-30 00:15:00,127 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-11-30 00:15:00,127 INFO L87 Difference]: Start difference. First operand 41 states and 46 transitions. Second operand 8 states. [2020-11-30 00:15:01,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:15:01,066 INFO L93 Difference]: Finished difference Result 48 states and 53 transitions. [2020-11-30 00:15:01,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-30 00:15:01,072 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 15 [2020-11-30 00:15:01,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:15:01,073 INFO L225 Difference]: With dead ends: 48 [2020-11-30 00:15:01,073 INFO L226 Difference]: Without dead ends: 19 [2020-11-30 00:15:01,074 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-11-30 00:15:01,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2020-11-30 00:15:01,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2020-11-30 00:15:01,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-11-30 00:15:01,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2020-11-30 00:15:01,087 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 15 [2020-11-30 00:15:01,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:15:01,087 INFO L481 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2020-11-30 00:15:01,088 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-30 00:15:01,088 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2020-11-30 00:15:01,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-30 00:15:01,091 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:15:01,092 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:15:01,307 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-11-30 00:15:01,308 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:15:01,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:15:01,308 INFO L82 PathProgramCache]: Analyzing trace with hash 1834889353, now seen corresponding path program 1 times [2020-11-30 00:15:01,309 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-30 00:15:01,309 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1143002320] [2020-11-30 00:15:01,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_28def472-6885-42ad-a4c5-0d466027658e/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 [2020-11-30 00:15:01,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:15:01,738 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-30 00:15:01,740 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:15:01,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:15:01,750 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 00:15:01,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:15:01,753 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1143002320] [2020-11-30 00:15:01,753 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:15:01,753 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2020-11-30 00:15:01,754 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408019314] [2020-11-30 00:15:01,754 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 00:15:01,754 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-30 00:15:01,755 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 00:15:01,756 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 00:15:01,756 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand 3 states. [2020-11-30 00:15:01,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:15:01,788 INFO L93 Difference]: Finished difference Result 22 states and 21 transitions. [2020-11-30 00:15:01,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 00:15:01,789 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-11-30 00:15:01,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:15:01,790 INFO L225 Difference]: With dead ends: 22 [2020-11-30 00:15:01,790 INFO L226 Difference]: Without dead ends: 19 [2020-11-30 00:15:01,791 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 00:15:01,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2020-11-30 00:15:01,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2020-11-30 00:15:01,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-11-30 00:15:01,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 18 transitions. [2020-11-30 00:15:01,801 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 18 transitions. Word has length 17 [2020-11-30 00:15:01,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:15:01,802 INFO L481 AbstractCegarLoop]: Abstraction has 19 states and 18 transitions. [2020-11-30 00:15:01,802 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 00:15:01,802 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 18 transitions. [2020-11-30 00:15:01,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-30 00:15:01,803 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:15:01,803 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:15:02,014 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-11-30 00:15:02,015 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:15:02,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:15:02,015 INFO L82 PathProgramCache]: Analyzing trace with hash 1046870301, now seen corresponding path program 1 times [2020-11-30 00:15:02,016 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-30 00:15:02,016 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [948256652] [2020-11-30 00:15:02,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_28def472-6885-42ad-a4c5-0d466027658e/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 [2020-11-30 00:15:02,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:15:02,706 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:15:03,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:15:03,321 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:15:03,416 INFO L173 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2020-11-30 00:15:03,416 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-30 00:15:03,616 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-11-30 00:15:03,663 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.11 12:15:03 BoogieIcfgContainer [2020-11-30 00:15:03,664 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-30 00:15:03,664 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 00:15:03,665 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 00:15:03,665 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 00:15:03,665 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:14:58" (3/4) ... [2020-11-30 00:15:03,668 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-30 00:15:03,727 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_28def472-6885-42ad-a4c5-0d466027658e/bin/uautomizer/witness.graphml [2020-11-30 00:15:03,727 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 00:15:03,729 INFO L168 Benchmark]: Toolchain (without parser) took 7175.99 ms. Allocated memory was 65.0 MB in the beginning and 81.8 MB in the end (delta: 16.8 MB). Free memory was 45.3 MB in the beginning and 31.1 MB in the end (delta: 14.2 MB). Peak memory consumption was 32.0 MB. Max. memory is 16.1 GB. [2020-11-30 00:15:03,730 INFO L168 Benchmark]: CDTParser took 0.33 ms. Allocated memory is still 65.0 MB. Free memory is still 46.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:15:03,731 INFO L168 Benchmark]: CACSL2BoogieTranslator took 373.15 ms. Allocated memory is still 65.0 MB. Free memory was 45.2 MB in the beginning and 32.7 MB in the end (delta: 12.5 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-11-30 00:15:03,731 INFO L168 Benchmark]: Boogie Procedure Inliner took 89.94 ms. Allocated memory is still 65.0 MB. Free memory was 32.7 MB in the beginning and 47.8 MB in the end (delta: -15.1 MB). Peak memory consumption was 5.5 MB. Max. memory is 16.1 GB. [2020-11-30 00:15:03,732 INFO L168 Benchmark]: Boogie Preprocessor took 64.32 ms. Allocated memory is still 65.0 MB. Free memory was 47.8 MB in the beginning and 45.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 00:15:03,732 INFO L168 Benchmark]: RCFGBuilder took 1744.91 ms. Allocated memory is still 65.0 MB. Free memory was 45.7 MB in the beginning and 36.1 MB in the end (delta: 9.6 MB). Peak memory consumption was 22.9 MB. Max. memory is 16.1 GB. [2020-11-30 00:15:03,733 INFO L168 Benchmark]: TraceAbstraction took 4830.63 ms. Allocated memory was 65.0 MB in the beginning and 81.8 MB in the end (delta: 16.8 MB). Free memory was 35.9 MB in the beginning and 34.3 MB in the end (delta: 1.5 MB). Peak memory consumption was 18.3 MB. Max. memory is 16.1 GB. [2020-11-30 00:15:03,734 INFO L168 Benchmark]: Witness Printer took 62.91 ms. Allocated memory is still 81.8 MB. Free memory was 33.8 MB in the beginning and 31.1 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 00:15:03,737 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33 ms. Allocated memory is still 65.0 MB. Free memory is still 46.8 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 373.15 ms. Allocated memory is still 65.0 MB. Free memory was 45.2 MB in the beginning and 32.7 MB in the end (delta: 12.5 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 89.94 ms. Allocated memory is still 65.0 MB. Free memory was 32.7 MB in the beginning and 47.8 MB in the end (delta: -15.1 MB). Peak memory consumption was 5.5 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 64.32 ms. Allocated memory is still 65.0 MB. Free memory was 47.8 MB in the beginning and 45.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1744.91 ms. Allocated memory is still 65.0 MB. Free memory was 45.7 MB in the beginning and 36.1 MB in the end (delta: 9.6 MB). Peak memory consumption was 22.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 4830.63 ms. Allocated memory was 65.0 MB in the beginning and 81.8 MB in the end (delta: 16.8 MB). Free memory was 35.9 MB in the beginning and 34.3 MB in the end (delta: 1.5 MB). Peak memory consumption was 18.3 MB. Max. memory is 16.1 GB. * Witness Printer took 62.91 ms. Allocated memory is still 81.8 MB. Free memory was 33.8 MB in the beginning and 31.1 MB in the end (delta: 2.7 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: [L19] static const double one_modf = 1.0; VAL [one_modf=1.0] [L118] double x = 0.0 / 0.0; [L119] double iptr; [L22] __int32_t i0, i1, j0; [L23] __uint32_t i; VAL [one_modf=1.0] [L25] ieee_double_shape_type ew_u; [L26] ew_u.value = (x) [L27] EXPR ew_u.parts.msw [L27] (i0) = ew_u.parts.msw [L28] EXPR ew_u.parts.lsw [L28] (i1) = ew_u.parts.lsw [L30] j0 = ((i0 >> 20) & 0x7ff) - 0x3ff VAL [one_modf=1.0] [L31] COND FALSE !(j0 < 20) VAL [one_modf=1.0] [L67] COND TRUE j0 > 51 [L68] __uint32_t high; [L69] *iptr = x * one_modf VAL [one_modf=1.0] [L71] ieee_double_shape_type gh_u; [L72] gh_u.value = (x) [L73] EXPR gh_u.parts.msw [L73] (high) = gh_u.parts.msw [L76] ieee_double_shape_type iw_u; [L77] iw_u.parts.msw = (high & 0x80000000) [L78] iw_u.parts.lsw = (0) [L79] EXPR iw_u.value [L79] (x) = iw_u.value [L81] return x; VAL [one_modf=1.0] [L120] double res = modf_double(x, &iptr); [L123] EXPR \read(iptr) [L17] return x != x; VAL [one_modf=1.0] [L123] isnan_double(iptr) && !isnan_double(res) [L17] return x != x; VAL [one_modf=1.0] [L123] isnan_double(iptr) && !isnan_double(res) VAL [one_modf=1.0] [L123] COND TRUE isnan_double(iptr) && !isnan_double(res) [L3] __assert_fail("0", "double_req_bl_1210.c", 3, "reach_error") VAL [one_modf=1.0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 45 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 4.7s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 1.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 82 SDtfs, 50 SDslu, 35 SDs, 0 SdLazy, 18 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 87 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=45occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 1.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 63 NumberOfCodeBlocks, 63 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 84 ConstructedInterpolants, 5 QuantifiedInterpolants, 2708 SizeOfPredicates, 8 NumberOfNonLiveVariables, 209 ConjunctsInSsa, 11 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...