./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/float-newlib/double_req_bl_0910a.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 096883e9 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/float-newlib/double_req_bl_0910a.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 4f5b8c80e48870e4ca371ca121ab1eea2fc8dc5d .......................................................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/float-newlib/double_req_bl_0910a.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 4f5b8c80e48870e4ca371ca121ab1eea2fc8dc5d ....................................................................................................................................................................................................................................................................................................................................... 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 0.2.0-096883e [2020-12-01 23:18:40,964 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-01 23:18:40,972 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-01 23:18:41,020 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-01 23:18:41,021 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-01 23:18:41,022 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-01 23:18:41,025 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-01 23:18:41,028 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-01 23:18:41,031 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-01 23:18:41,033 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-01 23:18:41,034 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-01 23:18:41,036 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-01 23:18:41,037 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-01 23:18:41,039 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-01 23:18:41,041 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-01 23:18:41,044 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-01 23:18:41,045 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-01 23:18:41,047 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-01 23:18:41,049 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-01 23:18:41,052 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-01 23:18:41,054 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-01 23:18:41,056 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-01 23:18:41,058 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-01 23:18:41,059 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-01 23:18:41,063 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-01 23:18:41,063 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-01 23:18:41,064 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-01 23:18:41,065 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-01 23:18:41,066 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-01 23:18:41,067 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-01 23:18:41,068 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-01 23:18:41,069 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-01 23:18:41,071 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-01 23:18:41,072 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-01 23:18:41,074 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-01 23:18:41,074 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-01 23:18:41,076 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-01 23:18:41,076 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-01 23:18:41,077 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-01 23:18:41,078 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-01 23:18:41,079 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-01 23:18:41,081 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-12-01 23:18:41,108 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-01 23:18:41,109 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-01 23:18:41,110 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-01 23:18:41,111 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-01 23:18:41,111 INFO L138 SettingsManager]: * Use SBE=true [2020-12-01 23:18:41,112 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-01 23:18:41,112 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-01 23:18:41,112 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-01 23:18:41,112 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-01 23:18:41,113 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-01 23:18:41,113 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-01 23:18:41,113 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-01 23:18:41,114 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-01 23:18:41,114 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-01 23:18:41,114 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-01 23:18:41,115 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-01 23:18:41,115 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-01 23:18:41,115 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-01 23:18:41,116 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-01 23:18:41,116 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-12-01 23:18:41,116 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-01 23:18:41,117 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-01 23:18:41,117 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-01 23:18:41,117 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-01 23:18:41,118 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-01 23:18:41,118 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-01 23:18:41,118 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-01 23:18:41,124 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-01 23:18:41,124 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-01 23:18:41,125 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:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4f5b8c80e48870e4ca371ca121ab1eea2fc8dc5d [2020-12-01 23:18:41,617 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-01 23:18:41,683 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-01 23:18:41,688 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-01 23:18:41,690 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-01 23:18:41,692 INFO L275 PluginConnector]: CDTParser initialized [2020-12-01 23:18:41,694 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/double_req_bl_0910a.c [2020-12-01 23:18:41,794 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7faa92f0c/b814c70255384994a25a3102cf874d68/FLAGf87f29806 [2020-12-01 23:18:42,406 INFO L306 CDTParser]: Found 1 translation units. [2020-12-01 23:18:42,406 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_0910a.c [2020-12-01 23:18:42,422 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7faa92f0c/b814c70255384994a25a3102cf874d68/FLAGf87f29806 [2020-12-01 23:18:42,776 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7faa92f0c/b814c70255384994a25a3102cf874d68 [2020-12-01 23:18:42,779 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-01 23:18:42,781 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-01 23:18:42,782 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-01 23:18:42,783 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-01 23:18:42,787 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-01 23:18:42,788 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 11:18:42" (1/1) ... [2020-12-01 23:18:42,793 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@37543d33 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:18:42, skipping insertion in model container [2020-12-01 23:18:42,793 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 11:18:42" (1/1) ... [2020-12-01 23:18:42,803 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-01 23:18:42,846 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-01 23:18:43,166 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_0910a.c[3598,3611] [2020-12-01 23:18:43,170 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-01 23:18:43,192 INFO L203 MainTranslator]: Completed pre-run [2020-12-01 23:18:43,283 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_0910a.c[3598,3611] [2020-12-01 23:18:43,284 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-01 23:18:43,313 INFO L208 MainTranslator]: Completed translation [2020-12-01 23:18:43,314 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:18:43 WrapperNode [2020-12-01 23:18:43,314 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-01 23:18:43,318 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-01 23:18:43,318 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-01 23:18:43,318 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-01 23:18:43,329 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:18:43" (1/1) ... [2020-12-01 23:18:43,354 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:18:43" (1/1) ... [2020-12-01 23:18:43,422 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-01 23:18:43,423 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-01 23:18:43,423 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-01 23:18:43,424 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-01 23:18:43,436 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:18:43" (1/1) ... [2020-12-01 23:18:43,436 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:18:43" (1/1) ... [2020-12-01 23:18:43,453 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:18:43" (1/1) ... [2020-12-01 23:18:43,455 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:18:43" (1/1) ... [2020-12-01 23:18:43,478 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:18:43" (1/1) ... [2020-12-01 23:18:43,487 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:18:43" (1/1) ... [2020-12-01 23:18:43,493 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:18:43" (1/1) ... [2020-12-01 23:18:43,501 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-01 23:18:43,502 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-01 23:18:43,503 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-01 23:18:43,503 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-01 23:18:43,504 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:18:43" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2020-12-01 23:18:43,624 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-01 23:18:43,626 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-01 23:18:43,626 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-12-01 23:18:43,626 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-01 23:18:43,626 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-12-01 23:18:43,626 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-01 23:18:43,627 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-01 23:18:43,628 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-01 23:18:43,628 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-01 23:18:44,181 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-01 23:18:44,181 INFO L298 CfgBuilder]: Removed 16 assume(true) statements. [2020-12-01 23:18:44,183 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 11:18:44 BoogieIcfgContainer [2020-12-01 23:18:44,183 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-01 23:18:44,185 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-01 23:18:44,185 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-01 23:18:44,188 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-01 23:18:44,189 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.12 11:18:42" (1/3) ... [2020-12-01 23:18:44,190 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@527981e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 11:18:44, skipping insertion in model container [2020-12-01 23:18:44,190 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:18:43" (2/3) ... [2020-12-01 23:18:44,190 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@527981e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 11:18:44, skipping insertion in model container [2020-12-01 23:18:44,190 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 11:18:44" (3/3) ... [2020-12-01 23:18:44,192 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_0910a.c [2020-12-01 23:18:44,208 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-01 23:18:44,212 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-01 23:18:44,222 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-01 23:18:44,254 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-01 23:18:44,254 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-01 23:18:44,255 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-01 23:18:44,255 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-01 23:18:44,255 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-01 23:18:44,255 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-01 23:18:44,255 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-01 23:18:44,255 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-01 23:18:44,269 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2020-12-01 23:18:44,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-01 23:18:44,274 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 23:18:44,275 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 23:18:44,275 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 23:18:44,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 23:18:44,282 INFO L82 PathProgramCache]: Analyzing trace with hash -2110731690, now seen corresponding path program 1 times [2020-12-01 23:18:44,292 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 23:18:44,292 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754464443] [2020-12-01 23:18:44,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 23:18:44,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 23:18:44,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 23:18:44,459 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [754464443] [2020-12-01 23:18:44,460 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 23:18:44,460 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-01 23:18:44,461 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223515017] [2020-12-01 23:18:44,466 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-01 23:18:44,466 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 23:18:44,481 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-01 23:18:44,482 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-01 23:18:44,484 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 2 states. [2020-12-01 23:18:44,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 23:18:44,505 INFO L93 Difference]: Finished difference Result 62 states and 100 transitions. [2020-12-01 23:18:44,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-01 23:18:44,507 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 12 [2020-12-01 23:18:44,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 23:18:44,517 INFO L225 Difference]: With dead ends: 62 [2020-12-01 23:18:44,517 INFO L226 Difference]: Without dead ends: 29 [2020-12-01 23:18:44,520 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 [2020-12-01 23:18:44,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-12-01 23:18:44,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-12-01 23:18:44,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-12-01 23:18:44,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 39 transitions. [2020-12-01 23:18:44,563 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 39 transitions. Word has length 12 [2020-12-01 23:18:44,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 23:18:44,564 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 39 transitions. [2020-12-01 23:18:44,564 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-01 23:18:44,564 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 39 transitions. [2020-12-01 23:18:44,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-01 23:18:44,565 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 23:18:44,565 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 23:18:44,566 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-01 23:18:44,566 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 23:18:44,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 23:18:44,567 INFO L82 PathProgramCache]: Analyzing trace with hash 1825265086, now seen corresponding path program 1 times [2020-12-01 23:18:44,567 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 23:18:44,568 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1383062001] [2020-12-01 23:18:44,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 23:18:44,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 23:18:44,697 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 23:18:44,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 23:18:44,857 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 23:18:44,924 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-12-01 23:18:44,924 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-01 23:18:44,926 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-01 23:18:45,008 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.12 11:18:45 BoogieIcfgContainer [2020-12-01 23:18:45,009 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-01 23:18:45,011 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-01 23:18:45,011 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-01 23:18:45,011 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-01 23:18:45,012 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 11:18:44" (3/4) ... [2020-12-01 23:18:45,016 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-12-01 23:18:45,016 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-01 23:18:45,021 INFO L168 Benchmark]: Toolchain (without parser) took 2236.66 ms. Allocated memory was 48.2 MB in the beginning and 58.7 MB in the end (delta: 10.5 MB). Free memory was 33.5 MB in the beginning and 27.6 MB in the end (delta: 5.9 MB). Peak memory consumption was 16.0 MB. Max. memory is 16.1 GB. [2020-12-01 23:18:45,022 INFO L168 Benchmark]: CDTParser took 0.37 ms. Allocated memory is still 35.7 MB. Free memory was 22.4 MB in the beginning and 22.4 MB in the end (delta: 32.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-01 23:18:45,023 INFO L168 Benchmark]: CACSL2BoogieTranslator took 534.08 ms. Allocated memory is still 48.2 MB. Free memory was 33.3 MB in the beginning and 21.0 MB in the end (delta: 12.3 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-12-01 23:18:45,024 INFO L168 Benchmark]: Boogie Procedure Inliner took 103.81 ms. Allocated memory is still 48.2 MB. Free memory was 21.0 MB in the beginning and 32.9 MB in the end (delta: -11.9 MB). Peak memory consumption was 2.9 MB. Max. memory is 16.1 GB. [2020-12-01 23:18:45,025 INFO L168 Benchmark]: Boogie Preprocessor took 79.08 ms. Allocated memory is still 48.2 MB. Free memory was 32.9 MB in the beginning and 31.0 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-01 23:18:45,027 INFO L168 Benchmark]: RCFGBuilder took 680.65 ms. Allocated memory is still 48.2 MB. Free memory was 31.0 MB in the beginning and 20.9 MB in the end (delta: 10.2 MB). Peak memory consumption was 14.3 MB. Max. memory is 16.1 GB. [2020-12-01 23:18:45,029 INFO L168 Benchmark]: TraceAbstraction took 824.17 ms. Allocated memory was 48.2 MB in the beginning and 58.7 MB in the end (delta: 10.5 MB). Free memory was 20.4 MB in the beginning and 27.9 MB in the end (delta: -7.6 MB). Peak memory consumption was 3.1 MB. Max. memory is 16.1 GB. [2020-12-01 23:18:45,031 INFO L168 Benchmark]: Witness Printer took 5.18 ms. Allocated memory is still 58.7 MB. Free memory was 27.9 MB in the beginning and 27.6 MB in the end (delta: 344.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-01 23:18:45,048 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.37 ms. Allocated memory is still 35.7 MB. Free memory was 22.4 MB in the beginning and 22.4 MB in the end (delta: 32.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 534.08 ms. Allocated memory is still 48.2 MB. Free memory was 33.3 MB in the beginning and 21.0 MB in the end (delta: 12.3 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 103.81 ms. Allocated memory is still 48.2 MB. Free memory was 21.0 MB in the beginning and 32.9 MB in the end (delta: -11.9 MB). Peak memory consumption was 2.9 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 79.08 ms. Allocated memory is still 48.2 MB. Free memory was 32.9 MB in the beginning and 31.0 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 680.65 ms. Allocated memory is still 48.2 MB. Free memory was 31.0 MB in the beginning and 20.9 MB in the end (delta: 10.2 MB). Peak memory consumption was 14.3 MB. Max. memory is 16.1 GB. * TraceAbstraction took 824.17 ms. Allocated memory was 48.2 MB in the beginning and 58.7 MB in the end (delta: 10.5 MB). Free memory was 20.4 MB in the beginning and 27.9 MB in the end (delta: -7.6 MB). Peak memory consumption was 3.1 MB. Max. memory is 16.1 GB. * Witness Printer took 5.18 ms. Allocated memory is still 58.7 MB. Free memory was 27.9 MB in the beginning and 27.6 MB in the end (delta: 344.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 139]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of bitwiseOr at line 29, overapproximation of someBinaryArithmeticDOUBLEoperation at line 62, overapproximation of bitwiseAnd at line 28. Possible FailurePath: [L34-L43] static const double ln2_hi_log = 6.93147180369123816490e-01, ln2_lo_log = 1.90821492927058770002e-10, two54_log = 1.80143985094819840000e+16, Lg1_log = 6.666666666666735130e-01, Lg2_log = 3.999999999940941908e-01, Lg3_log = 2.857142874366239149e-01, Lg4_log = 2.222219843214978396e-01, Lg5_log = 1.818357216161805012e-01, Lg6_log = 1.531383769920937332e-01, Lg7_log = 1.479819860511658591e-01; [L45] static const double zero = 0.0; VAL [Lg1_log=666666666666673513/1000000000000000000, Lg2_log=999999999985235477/2500000000000000000, Lg3_log=2857142874366239149/10000000000000000000, Lg4_log=555554960803744599/2500000000000000000, Lg5_log=454589304040451253/2500000000000000000, Lg6_log=382845942480234333/2500000000000000000, Lg7_log=1479819860511658591/10000000000000000000, ln2_hi_log=69314718036912381649/100000000000000000000, ln2_lo_log=95410746463529385001/500000000000000000000000000000, two54_log=18014398509481984, zero=0] [L134] double x = 0.0; [L48] double hfsq, f, s, z, R, w, t1, t2, dk; [L49] __int32_t k, hx, i, j; [L50] __uint32_t lx; VAL [Lg1_log=666666666666673513/1000000000000000000, Lg2_log=999999999985235477/2500000000000000000, Lg3_log=2857142874366239149/10000000000000000000, Lg4_log=555554960803744599/2500000000000000000, Lg5_log=454589304040451253/2500000000000000000, Lg6_log=382845942480234333/2500000000000000000, Lg7_log=1479819860511658591/10000000000000000000, ln2_hi_log=69314718036912381649/100000000000000000000, ln2_lo_log=95410746463529385001/500000000000000000000000000000, two54_log=18014398509481984, zero=0] [L53] ieee_double_shape_type ew_u; [L54] ew_u.value = (x) [L55] EXPR ew_u.parts.msw [L55] (hx) = ew_u.parts.msw [L56] EXPR ew_u.parts.lsw [L56] (lx) = ew_u.parts.lsw [L59] k = 0 VAL [Lg1_log=666666666666673513/1000000000000000000, Lg2_log=999999999985235477/2500000000000000000, Lg3_log=2857142874366239149/10000000000000000000, Lg4_log=555554960803744599/2500000000000000000, Lg5_log=454589304040451253/2500000000000000000, Lg6_log=382845942480234333/2500000000000000000, Lg7_log=1479819860511658591/10000000000000000000, ln2_hi_log=69314718036912381649/100000000000000000000, ln2_lo_log=95410746463529385001/500000000000000000000000000000, two54_log=18014398509481984, zero=0] [L60] COND TRUE hx < 0x00100000 VAL [Lg1_log=666666666666673513/1000000000000000000, Lg2_log=999999999985235477/2500000000000000000, Lg3_log=2857142874366239149/10000000000000000000, Lg4_log=555554960803744599/2500000000000000000, Lg5_log=454589304040451253/2500000000000000000, Lg6_log=382845942480234333/2500000000000000000, Lg7_log=1479819860511658591/10000000000000000000, ln2_hi_log=69314718036912381649/100000000000000000000, ln2_lo_log=95410746463529385001/500000000000000000000000000000, two54_log=18014398509481984, zero=0] [L61] COND TRUE ((hx & 0x7fffffff) | lx) == 0 [L62] return -two54_log / zero; VAL [Lg1_log=666666666666673513/1000000000000000000, Lg2_log=999999999985235477/2500000000000000000, Lg3_log=2857142874366239149/10000000000000000000, Lg4_log=555554960803744599/2500000000000000000, Lg5_log=454589304040451253/2500000000000000000, Lg6_log=382845942480234333/2500000000000000000, Lg7_log=1479819860511658591/10000000000000000000, ln2_hi_log=69314718036912381649/100000000000000000000, ln2_lo_log=95410746463529385001/500000000000000000000000000000, two54_log=18014398509481984, zero=0] [L135] double res = __ieee754_log(x); [L21] __int32_t hx, lx; VAL [Lg1_log=666666666666673513/1000000000000000000, Lg2_log=999999999985235477/2500000000000000000, Lg3_log=2857142874366239149/10000000000000000000, Lg4_log=555554960803744599/2500000000000000000, Lg5_log=454589304040451253/2500000000000000000, Lg6_log=382845942480234333/2500000000000000000, Lg7_log=1479819860511658591/10000000000000000000, ln2_hi_log=69314718036912381649/100000000000000000000, ln2_lo_log=95410746463529385001/500000000000000000000000000000, two54_log=18014398509481984, zero=0] [L23] ieee_double_shape_type ew_u; [L24] ew_u.value = (x) [L25] EXPR ew_u.parts.msw [L25] (hx) = ew_u.parts.msw [L26] EXPR ew_u.parts.lsw [L26] (lx) = ew_u.parts.lsw [L28] hx &= 0x7fffffff [L29] hx |= (__uint32_t)(lx | (-lx)) >> 31 [L30] hx = 0x7ff00000 - hx [L31] return 1 - (int)((__uint32_t)(hx | (-hx)) >> 31); VAL [Lg1_log=666666666666673513/1000000000000000000, Lg2_log=999999999985235477/2500000000000000000, Lg3_log=2857142874366239149/10000000000000000000, Lg4_log=555554960803744599/2500000000000000000, Lg5_log=454589304040451253/2500000000000000000, Lg6_log=382845942480234333/2500000000000000000, Lg7_log=1479819860511658591/10000000000000000000, ln2_hi_log=69314718036912381649/100000000000000000000, ln2_lo_log=95410746463529385001/500000000000000000000000000000, two54_log=18014398509481984, zero=0] [L138] COND TRUE !isinf_double(res) [L139] reach_error() VAL [Lg1_log=666666666666673513/1000000000000000000, Lg2_log=999999999985235477/2500000000000000000, Lg3_log=2857142874366239149/10000000000000000000, Lg4_log=555554960803744599/2500000000000000000, Lg5_log=454589304040451253/2500000000000000000, Lg6_log=382845942480234333/2500000000000000000, Lg7_log=1479819860511658591/10000000000000000000, ln2_hi_log=69314718036912381649/100000000000000000000, ln2_lo_log=95410746463529385001/500000000000000000000000000000, two54_log=18014398509481984, zero=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 32 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.6s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 42 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=32occurred 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, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 26 NumberOfCodeBlocks, 26 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 11 ConstructedInterpolants, 0 QuantifiedInterpolants, 121 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 0.2.0-096883e [2020-12-01 23:18:47,629 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-01 23:18:47,632 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-01 23:18:47,677 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-12-01 23:18:47,706 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-01 23:18:47,709 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-01 23:18:47,712 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-01 23:18:47,717 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-01 23:18:47,718 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-01 23:18:47,719 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-01 23:18:47,721 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-01 23:18:47,726 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-01 23:18:47,730 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-01 23:18:47,732 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-01 23:18:47,734 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-01 23:18:47,736 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-01 23:18:47,742 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-01 23:18:47,749 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-01 23:18:47,750 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-01 23:18:47,751 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-01 23:18:47,753 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-01 23:18:47,754 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-01 23:18:47,754 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-01 23:18:47,755 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-01 23:18:47,755 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-01 23:18:47,755 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-01 23:18:47,757 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-01 23:18:47,758 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-01 23:18:47,759 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-12-01 23:18:47,812 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-01 23:18:47,812 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-01 23:18:47,814 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-01 23:18:47,815 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-01 23:18:47,815 INFO L138 SettingsManager]: * Use SBE=true [2020-12-01 23:18:47,815 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-01 23:18:47,815 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-01 23:18:47,815 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-01 23:18:47,816 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-01 23:18:47,816 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-01 23:18:47,816 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-01 23:18:47,816 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-01 23:18:47,816 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-12-01 23:18:47,817 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-12-01 23:18:47,817 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-01 23:18:47,817 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-01 23:18:47,817 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-01 23:18:47,817 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-01 23:18:47,817 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-01 23:18:47,818 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-01 23:18:47,818 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-12-01 23:18:47,818 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-01 23:18:47,818 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-01 23:18:47,818 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-01 23:18:47,819 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-01 23:18:47,819 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-01 23:18:47,819 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-12-01 23:18:47,819 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-12-01 23:18:47,819 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-01 23:18:47,820 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-01 23:18:47,820 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-01 23:18:47,820 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:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4f5b8c80e48870e4ca371ca121ab1eea2fc8dc5d [2020-12-01 23:18:48,180 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-01 23:18:48,210 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-01 23:18:48,217 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-01 23:18:48,219 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-01 23:18:48,220 INFO L275 PluginConnector]: CDTParser initialized [2020-12-01 23:18:48,221 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/double_req_bl_0910a.c [2020-12-01 23:18:48,313 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/561666fc7/f560a6f4f6b546fd9ccc499245161e7d/FLAG26383ede2 [2020-12-01 23:18:48,944 INFO L306 CDTParser]: Found 1 translation units. [2020-12-01 23:18:48,945 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_0910a.c [2020-12-01 23:18:48,955 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/561666fc7/f560a6f4f6b546fd9ccc499245161e7d/FLAG26383ede2 [2020-12-01 23:18:49,264 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/561666fc7/f560a6f4f6b546fd9ccc499245161e7d [2020-12-01 23:18:49,269 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-01 23:18:49,273 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-01 23:18:49,275 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-01 23:18:49,275 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-01 23:18:49,281 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-01 23:18:49,282 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 11:18:49" (1/1) ... [2020-12-01 23:18:49,288 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ab472ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:18:49, skipping insertion in model container [2020-12-01 23:18:49,288 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 11:18:49" (1/1) ... [2020-12-01 23:18:49,297 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-01 23:18:49,336 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-01 23:18:49,576 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_0910a.c[3598,3611] [2020-12-01 23:18:49,579 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-01 23:18:49,598 INFO L203 MainTranslator]: Completed pre-run [2020-12-01 23:18:49,643 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_0910a.c[3598,3611] [2020-12-01 23:18:49,644 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-01 23:18:49,668 INFO L208 MainTranslator]: Completed translation [2020-12-01 23:18:49,668 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:18:49 WrapperNode [2020-12-01 23:18:49,669 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-01 23:18:49,670 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-01 23:18:49,670 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-01 23:18:49,670 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-01 23:18:49,680 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:18:49" (1/1) ... [2020-12-01 23:18:49,696 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:18:49" (1/1) ... [2020-12-01 23:18:49,731 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-01 23:18:49,732 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-01 23:18:49,733 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-01 23:18:49,733 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-01 23:18:49,747 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:18:49" (1/1) ... [2020-12-01 23:18:49,747 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:18:49" (1/1) ... [2020-12-01 23:18:49,756 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:18:49" (1/1) ... [2020-12-01 23:18:49,757 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:18:49" (1/1) ... [2020-12-01 23:18:49,790 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:18:49" (1/1) ... [2020-12-01 23:18:49,803 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:18:49" (1/1) ... [2020-12-01 23:18:49,818 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:18:49" (1/1) ... [2020-12-01 23:18:49,830 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-01 23:18:49,831 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-01 23:18:49,831 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-01 23:18:49,831 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-01 23:18:49,832 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:18:49" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2020-12-01 23:18:49,981 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2020-12-01 23:18:49,982 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2020-12-01 23:18:49,982 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-12-01 23:18:49,982 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-01 23:18:49,983 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-12-01 23:18:49,984 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-01 23:18:49,984 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-01 23:18:49,984 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2020-12-01 23:18:49,985 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-01 23:19:17,177 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-01 23:19:17,177 INFO L298 CfgBuilder]: Removed 16 assume(true) statements. [2020-12-01 23:19:17,178 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 11:19:17 BoogieIcfgContainer [2020-12-01 23:19:17,179 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-01 23:19:17,181 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-01 23:19:17,181 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-01 23:19:17,185 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-01 23:19:17,185 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.12 11:18:49" (1/3) ... [2020-12-01 23:19:17,186 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@460c9c76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 11:19:17, skipping insertion in model container [2020-12-01 23:19:17,186 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:18:49" (2/3) ... [2020-12-01 23:19:17,187 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@460c9c76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 11:19:17, skipping insertion in model container [2020-12-01 23:19:17,187 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 11:19:17" (3/3) ... [2020-12-01 23:19:17,189 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_0910a.c [2020-12-01 23:19:17,208 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-01 23:19:17,213 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-01 23:19:17,226 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-01 23:19:17,253 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-01 23:19:17,254 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-01 23:19:17,254 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-01 23:19:17,254 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-01 23:19:17,254 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-01 23:19:17,255 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-01 23:19:17,255 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-01 23:19:17,255 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-01 23:19:17,270 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2020-12-01 23:19:17,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-01 23:19:17,276 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 23:19:17,277 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 23:19:17,278 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 23:19:17,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 23:19:17,284 INFO L82 PathProgramCache]: Analyzing trace with hash -2110731690, now seen corresponding path program 1 times [2020-12-01 23:19:17,298 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-12-01 23:19:17,298 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [587725317] [2020-12-01 23:19:17,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2020-12-01 23:19:18,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 23:19:18,372 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 1 conjunts are in the unsatisfiable core [2020-12-01 23:19:18,377 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 23:19:18,408 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 23:19:18,409 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-01 23:19:18,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 23:19:18,426 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [587725317] [2020-12-01 23:19:18,427 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-01 23:19:18,427 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-12-01 23:19:18,428 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776445872] [2020-12-01 23:19:18,433 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-01 23:19:18,434 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-12-01 23:19:18,448 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-01 23:19:18,449 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-01 23:19:18,451 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 2 states. [2020-12-01 23:19:18,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 23:19:18,472 INFO L93 Difference]: Finished difference Result 62 states and 100 transitions. [2020-12-01 23:19:18,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-01 23:19:18,474 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 12 [2020-12-01 23:19:18,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 23:19:18,485 INFO L225 Difference]: With dead ends: 62 [2020-12-01 23:19:18,485 INFO L226 Difference]: Without dead ends: 29 [2020-12-01 23:19:18,488 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-01 23:19:18,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-12-01 23:19:18,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-12-01 23:19:18,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-12-01 23:19:18,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 39 transitions. [2020-12-01 23:19:18,528 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 39 transitions. Word has length 12 [2020-12-01 23:19:18,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 23:19:18,528 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 39 transitions. [2020-12-01 23:19:18,529 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-01 23:19:18,529 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 39 transitions. [2020-12-01 23:19:18,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-01 23:19:18,530 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 23:19:18,530 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 23:19:18,742 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-12-01 23:19:18,742 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 23:19:18,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 23:19:18,744 INFO L82 PathProgramCache]: Analyzing trace with hash 1825265086, now seen corresponding path program 1 times [2020-12-01 23:19:18,747 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-12-01 23:19:18,747 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [602566051] [2020-12-01 23:19:18,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2020-12-01 23:19:19,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 23:19:19,831 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 23:19:20,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 23:19:20,884 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 23:19:21,024 INFO L173 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2020-12-01 23:19:21,024 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-01 23:19:21,226 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-12-01 23:19:21,308 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.12 11:19:21 BoogieIcfgContainer [2020-12-01 23:19:21,308 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-01 23:19:21,309 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-01 23:19:21,309 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-01 23:19:21,309 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-01 23:19:21,310 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 11:19:17" (3/4) ... [2020-12-01 23:19:21,312 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-12-01 23:19:21,395 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-12-01 23:19:21,395 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-01 23:19:21,399 INFO L168 Benchmark]: Toolchain (without parser) took 32125.46 ms. Allocated memory was 46.1 MB in the beginning and 56.6 MB in the end (delta: 10.5 MB). Free memory was 23.3 MB in the beginning and 36.8 MB in the end (delta: -13.5 MB). Peak memory consumption was 16.0 MB. Max. memory is 16.1 GB. [2020-12-01 23:19:21,399 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 46.1 MB. Free memory was 29.4 MB in the beginning and 29.3 MB in the end (delta: 63.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-01 23:19:21,404 INFO L168 Benchmark]: CACSL2BoogieTranslator took 394.31 ms. Allocated memory is still 46.1 MB. Free memory was 23.1 MB in the beginning and 23.2 MB in the end (delta: -137.5 kB). Peak memory consumption was 7.7 MB. Max. memory is 16.1 GB. [2020-12-01 23:19:21,405 INFO L168 Benchmark]: Boogie Procedure Inliner took 61.80 ms. Allocated memory is still 46.1 MB. Free memory was 23.2 MB in the beginning and 21.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-12-01 23:19:21,409 INFO L168 Benchmark]: Boogie Preprocessor took 98.00 ms. Allocated memory is still 46.1 MB. Free memory was 21.1 MB in the beginning and 30.0 MB in the end (delta: -8.9 MB). Peak memory consumption was 5.8 MB. Max. memory is 16.1 GB. [2020-12-01 23:19:21,409 INFO L168 Benchmark]: RCFGBuilder took 27347.81 ms. Allocated memory was 46.1 MB in the beginning and 56.6 MB in the end (delta: 10.5 MB). Free memory was 30.0 MB in the beginning and 25.8 MB in the end (delta: 4.2 MB). Peak memory consumption was 13.8 MB. Max. memory is 16.1 GB. [2020-12-01 23:19:21,410 INFO L168 Benchmark]: TraceAbstraction took 4127.42 ms. Allocated memory is still 56.6 MB. Free memory was 25.3 MB in the beginning and 23.1 MB in the end (delta: 2.2 MB). Peak memory consumption was 3.4 MB. Max. memory is 16.1 GB. [2020-12-01 23:19:21,411 INFO L168 Benchmark]: Witness Printer took 86.26 ms. Allocated memory is still 56.6 MB. Free memory was 23.1 MB in the beginning and 36.8 MB in the end (delta: -13.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-01 23:19:21,420 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 46.1 MB. Free memory was 29.4 MB in the beginning and 29.3 MB in the end (delta: 63.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 394.31 ms. Allocated memory is still 46.1 MB. Free memory was 23.1 MB in the beginning and 23.2 MB in the end (delta: -137.5 kB). Peak memory consumption was 7.7 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 61.80 ms. Allocated memory is still 46.1 MB. Free memory was 23.2 MB in the beginning and 21.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 98.00 ms. Allocated memory is still 46.1 MB. Free memory was 21.1 MB in the beginning and 30.0 MB in the end (delta: -8.9 MB). Peak memory consumption was 5.8 MB. Max. memory is 16.1 GB. * RCFGBuilder took 27347.81 ms. Allocated memory was 46.1 MB in the beginning and 56.6 MB in the end (delta: 10.5 MB). Free memory was 30.0 MB in the beginning and 25.8 MB in the end (delta: 4.2 MB). Peak memory consumption was 13.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 4127.42 ms. Allocated memory is still 56.6 MB. Free memory was 25.3 MB in the beginning and 23.1 MB in the end (delta: 2.2 MB). Peak memory consumption was 3.4 MB. Max. memory is 16.1 GB. * Witness Printer took 86.26 ms. Allocated memory is still 56.6 MB. Free memory was 23.1 MB in the beginning and 36.8 MB in the end (delta: -13.7 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: 139]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L34-L43] static const double ln2_hi_log = 6.93147180369123816490e-01, ln2_lo_log = 1.90821492927058770002e-10, two54_log = 1.80143985094819840000e+16, Lg1_log = 6.666666666666735130e-01, Lg2_log = 3.999999999940941908e-01, Lg3_log = 2.857142874366239149e-01, Lg4_log = 2.222219843214978396e-01, Lg5_log = 1.818357216161805012e-01, Lg6_log = 1.531383769920937332e-01, Lg7_log = 1.479819860511658591e-01; [L45] static const double zero = 0.0; VAL [Lg1_log=0.6666666666666735, Lg2_log=0.3999999999940942, Lg3_log=0.2857142874366239, Lg4_log=0.22222198432149784, Lg5_log=0.1818357216161805, Lg6_log=0.15313837699209373, Lg7_log=0.14798198605116586, ln2_hi_log=0.6931471803691238, ln2_lo_log=0.00000000019082149292705877, two54_log=18014398509481984, zero=0.0] [L134] double x = 0.0; [L48] double hfsq, f, s, z, R, w, t1, t2, dk; [L49] __int32_t k, hx, i, j; [L50] __uint32_t lx; VAL [Lg1_log=0.6666666666666735, Lg2_log=0.3999999999940942, Lg3_log=0.2857142874366239, Lg4_log=0.22222198432149784, Lg5_log=0.1818357216161805, Lg6_log=0.15313837699209373, Lg7_log=0.14798198605116586, ln2_hi_log=0.6931471803691238, ln2_lo_log=0.00000000019082149292705877, two54_log=18014398509481984, zero=0.0] [L53] ieee_double_shape_type ew_u; [L54] ew_u.value = (x) [L55] EXPR ew_u.parts.msw [L55] (hx) = ew_u.parts.msw [L56] EXPR ew_u.parts.lsw [L56] (lx) = ew_u.parts.lsw [L59] k = 0 VAL [Lg1_log=0.6666666666666735, Lg2_log=0.3999999999940942, Lg3_log=0.2857142874366239, Lg4_log=0.22222198432149784, Lg5_log=0.1818357216161805, Lg6_log=0.15313837699209373, Lg7_log=0.14798198605116586, ln2_hi_log=0.6931471803691238, ln2_lo_log=0.00000000019082149292705877, two54_log=18014398509481984, zero=0.0] [L60] COND TRUE hx < 0x00100000 VAL [Lg1_log=0.6666666666666735, Lg2_log=0.3999999999940942, Lg3_log=0.2857142874366239, Lg4_log=0.22222198432149784, Lg5_log=0.1818357216161805, Lg6_log=0.15313837699209373, Lg7_log=0.14798198605116586, ln2_hi_log=0.6931471803691238, ln2_lo_log=0.00000000019082149292705877, two54_log=18014398509481984, zero=0.0] [L61] COND TRUE ((hx & 0x7fffffff) | lx) == 0 [L62] return -two54_log / zero; VAL [Lg1_log=0.6666666666666735, Lg2_log=0.3999999999940942, Lg3_log=0.2857142874366239, Lg4_log=0.22222198432149784, Lg5_log=0.1818357216161805, Lg6_log=0.15313837699209373, Lg7_log=0.14798198605116586, ln2_hi_log=0.6931471803691238, ln2_lo_log=0.00000000019082149292705877, two54_log=18014398509481984, zero=0.0] [L135] double res = __ieee754_log(x); [L21] __int32_t hx, lx; VAL [Lg1_log=0.6666666666666735, Lg2_log=0.3999999999940942, Lg3_log=0.2857142874366239, Lg4_log=0.22222198432149784, Lg5_log=0.1818357216161805, Lg6_log=0.15313837699209373, Lg7_log=0.14798198605116586, ln2_hi_log=0.6931471803691238, ln2_lo_log=0.00000000019082149292705877, two54_log=18014398509481984, zero=0.0] [L23] ieee_double_shape_type ew_u; [L24] ew_u.value = (x) [L25] EXPR ew_u.parts.msw [L25] (hx) = ew_u.parts.msw [L26] EXPR ew_u.parts.lsw [L26] (lx) = ew_u.parts.lsw [L28] hx &= 0x7fffffff [L29] hx |= (__uint32_t)(lx | (-lx)) >> 31 [L30] hx = 0x7ff00000 - hx [L31] return 1 - (int)((__uint32_t)(hx | (-hx)) >> 31); VAL [Lg1_log=0.6666666666666735, Lg2_log=0.3999999999940942, Lg3_log=0.2857142874366239, Lg4_log=0.22222198432149784, Lg5_log=0.1818357216161805, Lg6_log=0.15313837699209373, Lg7_log=0.14798198605116586, ln2_hi_log=0.6931471803691238, ln2_lo_log=0.00000000019082149292705877, two54_log=18014398509481984, zero=0.0] [L138] COND TRUE !isinf_double(res) [L139] reach_error() VAL [Lg1_log=0.6666666666666735, Lg2_log=0.3999999999940942, Lg3_log=0.2857142874366239, Lg4_log=0.22222198432149784, Lg5_log=0.1818357216161805, Lg6_log=0.15313837699209373, Lg7_log=0.14798198605116586, ln2_hi_log=0.6931471803691238, ln2_lo_log=0.00000000019082149292705877, two54_log=18014398509481984, zero=0.0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 32 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 3.9s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 42 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 22 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=32occurred 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, 1.9s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 26 NumberOfCodeBlocks, 26 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 22 ConstructedInterpolants, 0 QuantifiedInterpolants, 242 SizeOfPredicates, 0 NumberOfNonLiveVariables, 50 ConjunctsInSsa, 1 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 proved your program to be incorrect! [MP z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forcibly destroying the process Received shutdown request...