./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/float-newlib/float_req_bl_0620b.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e1a00cf 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 ../../../trunk/examples/svcomp/float-newlib/float_req_bl_0620b.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 bb223ac5dd337697f7c4caeca580bc7e9e7345b8 ..................................................................................................................................................................................................................................................................................................................... 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 ../../../trunk/examples/svcomp/float-newlib/float_req_bl_0620b.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 bb223ac5dd337697f7c4caeca580bc7e9e7345b8 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-0e1a00c [2020-11-29 14:39:04,770 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 14:39:04,775 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 14:39:04,833 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 14:39:04,834 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 14:39:04,839 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 14:39:04,842 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 14:39:04,849 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 14:39:04,852 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 14:39:04,858 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 14:39:04,860 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 14:39:04,864 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 14:39:04,865 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 14:39:04,869 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 14:39:04,870 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 14:39:04,872 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 14:39:04,874 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 14:39:04,878 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 14:39:04,883 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 14:39:04,889 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 14:39:04,892 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 14:39:04,894 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 14:39:04,896 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 14:39:04,898 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 14:39:04,906 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 14:39:04,909 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 14:39:04,910 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 14:39:04,911 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 14:39:04,913 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 14:39:04,914 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 14:39:04,914 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 14:39:04,915 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 14:39:04,917 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 14:39:04,918 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 14:39:04,928 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 14:39:04,929 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 14:39:04,930 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 14:39:04,931 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 14:39:04,931 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 14:39:04,933 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 14:39:04,934 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 14:39:04,938 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-29 14:39:04,989 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 14:39:04,989 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 14:39:04,991 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 14:39:04,991 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 14:39:04,992 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 14:39:04,992 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 14:39:04,992 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 14:39:04,992 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 14:39:04,993 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 14:39:04,993 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 14:39:04,993 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-29 14:39:04,993 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-29 14:39:04,994 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-29 14:39:04,994 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 14:39:04,994 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 14:39:04,994 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 14:39:04,995 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-29 14:39:04,995 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 14:39:04,995 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 14:39:04,995 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-29 14:39:04,996 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-29 14:39:04,996 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 14:39:04,996 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 14:39:04,996 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-29 14:39:04,997 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-29 14:39:04,997 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 14:39:04,997 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-29 14:39:04,997 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-29 14:39:04,998 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 14:39:04,998 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bb223ac5dd337697f7c4caeca580bc7e9e7345b8 [2020-11-29 14:39:05,368 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 14:39:05,394 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 14:39:05,398 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 14:39:05,399 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 14:39:05,401 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 14:39:05,402 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_0620b.c [2020-11-29 14:39:05,478 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/67ba5d187/99758edddc1449caae2d7620849c7b20/FLAGaffe26ebb [2020-11-29 14:39:06,056 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 14:39:06,057 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_0620b.c [2020-11-29 14:39:06,065 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/67ba5d187/99758edddc1449caae2d7620849c7b20/FLAGaffe26ebb [2020-11-29 14:39:06,426 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/67ba5d187/99758edddc1449caae2d7620849c7b20 [2020-11-29 14:39:06,430 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 14:39:06,437 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 14:39:06,441 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 14:39:06,447 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 14:39:06,457 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 14:39:06,458 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 02:39:06" (1/1) ... [2020-11-29 14:39:06,466 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d8a271e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:39:06, skipping insertion in model container [2020-11-29 14:39:06,468 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 02:39:06" (1/1) ... [2020-11-29 14:39:06,489 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 14:39:06,511 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 14:39:06,716 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 14:39:06,729 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 14:39:06,789 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 14:39:06,829 INFO L208 MainTranslator]: Completed translation [2020-11-29 14:39:06,830 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:39:06 WrapperNode [2020-11-29 14:39:06,831 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 14:39:06,834 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 14:39:06,834 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 14:39:06,836 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 14:39:06,845 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:39:06" (1/1) ... [2020-11-29 14:39:06,882 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:39:06" (1/1) ... [2020-11-29 14:39:06,960 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 14:39:06,962 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 14:39:06,962 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 14:39:06,962 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 14:39:06,976 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:39:06" (1/1) ... [2020-11-29 14:39:06,977 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:39:06" (1/1) ... [2020-11-29 14:39:06,996 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:39:06" (1/1) ... [2020-11-29 14:39:07,001 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:39:06" (1/1) ... [2020-11-29 14:39:07,025 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:39:06" (1/1) ... [2020-11-29 14:39:07,040 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:39:06" (1/1) ... [2020-11-29 14:39:07,047 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:39:06" (1/1) ... [2020-11-29 14:39:07,054 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 14:39:07,057 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 14:39:07,058 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 14:39:07,058 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 14:39:07,065 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:39:06" (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 [2020-11-29 14:39:07,150 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-29 14:39:07,151 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 14:39:07,151 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-11-29 14:39:07,151 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-29 14:39:07,152 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-11-29 14:39:07,152 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 14:39:07,152 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 14:39:07,152 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-29 14:39:07,153 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-11-29 14:39:07,153 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-29 14:39:07,738 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 14:39:07,739 INFO L298 CfgBuilder]: Removed 20 assume(true) statements. [2020-11-29 14:39:07,741 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 02:39:07 BoogieIcfgContainer [2020-11-29 14:39:07,741 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 14:39:07,744 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-29 14:39:07,744 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-29 14:39:07,748 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-29 14:39:07,748 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 02:39:06" (1/3) ... [2020-11-29 14:39:07,750 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5023ec08 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 02:39:07, skipping insertion in model container [2020-11-29 14:39:07,750 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:39:06" (2/3) ... [2020-11-29 14:39:07,750 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5023ec08 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 02:39:07, skipping insertion in model container [2020-11-29 14:39:07,751 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 02:39:07" (3/3) ... [2020-11-29 14:39:07,753 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_0620b.c [2020-11-29 14:39:07,769 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-29 14:39:07,774 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-29 14:39:07,788 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-29 14:39:07,819 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-29 14:39:07,820 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-29 14:39:07,820 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-29 14:39:07,820 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 14:39:07,820 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 14:39:07,821 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-29 14:39:07,821 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 14:39:07,821 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-29 14:39:07,838 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states. [2020-11-29 14:39:07,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-29 14:39:07,845 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 14:39:07,846 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 14:39:07,847 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 14:39:07,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 14:39:07,855 INFO L82 PathProgramCache]: Analyzing trace with hash 1030429181, now seen corresponding path program 1 times [2020-11-29 14:39:07,867 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 14:39:07,868 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1800111192] [2020-11-29 14:39:07,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 14:39:08,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 14:39:08,071 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 14:39:08,072 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1800111192] [2020-11-29 14:39:08,073 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 14:39:08,073 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-29 14:39:08,074 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377855786] [2020-11-29 14:39:08,079 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-29 14:39:08,079 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 14:39:08,094 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-29 14:39:08,095 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-29 14:39:08,097 INFO L87 Difference]: Start difference. First operand 38 states. Second operand 2 states. [2020-11-29 14:39:08,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 14:39:08,119 INFO L93 Difference]: Finished difference Result 73 states and 113 transitions. [2020-11-29 14:39:08,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-29 14:39:08,121 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-11-29 14:39:08,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 14:39:08,132 INFO L225 Difference]: With dead ends: 73 [2020-11-29 14:39:08,132 INFO L226 Difference]: Without dead ends: 34 [2020-11-29 14:39:08,136 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-29 14:39:08,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-11-29 14:39:08,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2020-11-29 14:39:08,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-11-29 14:39:08,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 45 transitions. [2020-11-29 14:39:08,173 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 45 transitions. Word has length 10 [2020-11-29 14:39:08,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 14:39:08,173 INFO L481 AbstractCegarLoop]: Abstraction has 34 states and 45 transitions. [2020-11-29 14:39:08,174 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-29 14:39:08,174 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 45 transitions. [2020-11-29 14:39:08,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-29 14:39:08,175 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 14:39:08,175 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 14:39:08,175 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-29 14:39:08,176 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 14:39:08,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 14:39:08,177 INFO L82 PathProgramCache]: Analyzing trace with hash -1304878016, now seen corresponding path program 1 times [2020-11-29 14:39:08,177 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 14:39:08,177 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464860588] [2020-11-29 14:39:08,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 14:39:08,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 14:39:08,247 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 14:39:08,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 14:39:08,291 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 14:39:08,341 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 14:39:08,341 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-29 14:39:08,342 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-29 14:39:08,386 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 02:39:08 BoogieIcfgContainer [2020-11-29 14:39:08,386 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-29 14:39:08,387 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 14:39:08,387 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 14:39:08,388 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 14:39:08,388 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 02:39:07" (3/4) ... [2020-11-29 14:39:08,393 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-29 14:39:08,393 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 14:39:08,396 INFO L168 Benchmark]: Toolchain (without parser) took 1961.84 ms. Allocated memory was 46.1 MB in the beginning and 73.4 MB in the end (delta: 27.3 MB). Free memory was 22.7 MB in the beginning and 52.1 MB in the end (delta: -29.4 MB). Peak memory consumption was 999.4 kB. Max. memory is 16.1 GB. [2020-11-29 14:39:08,397 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 46.1 MB. Free memory is still 29.2 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 14:39:08,398 INFO L168 Benchmark]: CACSL2BoogieTranslator took 390.71 ms. Allocated memory was 46.1 MB in the beginning and 56.6 MB in the end (delta: 10.5 MB). Free memory was 22.0 MB in the beginning and 29.7 MB in the end (delta: -7.7 MB). Peak memory consumption was 3.3 MB. Max. memory is 16.1 GB. [2020-11-29 14:39:08,399 INFO L168 Benchmark]: Boogie Procedure Inliner took 127.05 ms. Allocated memory is still 56.6 MB. Free memory was 29.5 MB in the beginning and 27.3 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 14:39:08,400 INFO L168 Benchmark]: Boogie Preprocessor took 92.91 ms. Allocated memory is still 56.6 MB. Free memory was 27.3 MB in the beginning and 25.3 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 14:39:08,401 INFO L168 Benchmark]: RCFGBuilder took 683.95 ms. Allocated memory is still 56.6 MB. Free memory was 25.3 MB in the beginning and 32.5 MB in the end (delta: -7.1 MB). Peak memory consumption was 6.7 MB. Max. memory is 16.1 GB. [2020-11-29 14:39:08,402 INFO L168 Benchmark]: TraceAbstraction took 642.76 ms. Allocated memory was 56.6 MB in the beginning and 73.4 MB in the end (delta: 16.8 MB). Free memory was 32.2 MB in the beginning and 52.5 MB in the end (delta: -20.3 MB). Peak memory consumption was 13.5 MB. Max. memory is 16.1 GB. [2020-11-29 14:39:08,403 INFO L168 Benchmark]: Witness Printer took 6.07 ms. Allocated memory is still 73.4 MB. Free memory was 52.5 MB in the beginning and 52.1 MB in the end (delta: 425.4 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 14:39:08,408 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 46.1 MB. Free memory is still 29.2 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 390.71 ms. Allocated memory was 46.1 MB in the beginning and 56.6 MB in the end (delta: 10.5 MB). Free memory was 22.0 MB in the beginning and 29.7 MB in the end (delta: -7.7 MB). Peak memory consumption was 3.3 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 127.05 ms. Allocated memory is still 56.6 MB. Free memory was 29.5 MB in the beginning and 27.3 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 92.91 ms. Allocated memory is still 56.6 MB. Free memory was 27.3 MB in the beginning and 25.3 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 683.95 ms. Allocated memory is still 56.6 MB. Free memory was 25.3 MB in the beginning and 32.5 MB in the end (delta: -7.1 MB). Peak memory consumption was 6.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 642.76 ms. Allocated memory was 56.6 MB in the beginning and 73.4 MB in the end (delta: 16.8 MB). Free memory was 32.2 MB in the beginning and 52.5 MB in the end (delta: -20.3 MB). Peak memory consumption was 13.5 MB. Max. memory is 16.1 GB. * Witness Printer took 6.07 ms. Allocated memory is still 73.4 MB. Free memory was 52.5 MB in the beginning and 52.1 MB in the end (delta: 425.4 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 someBinaryFLOATComparisonOperation at line 143, overapproximation of someUnaryDOUBLEoperation at line 46, overapproximation of bitwiseAnd at line 64, overapproximation of someUnaryFLOAToperation at line 139, overapproximation of someBinaryArithmeticFLOAToperation at line 67. Possible FailurePath: [L14] static const float huge_floor = 1.0e30; [L31-L36] static const float atanhi_atan[] = { 4.6364760399e-01, 7.8539812565e-01, 9.8279368877e-01, 1.5707962513e+00, }; [L38-L43] static const float atanlo_atan[] = { 5.0121582440e-09, 3.7748947079e-08, 3.4473217170e-08, 7.5497894159e-08, }; [L45-L49] static const float aT_atan[] = { 3.3333334327e-01, -2.0000000298e-01, 1.4285714924e-01, -1.1111110449e-01, 9.0908870101e-02, -7.6918758452e-02, 6.6610731184e-02, -5.8335702866e-02, 4.9768779427e-02, -3.6531571299e-02, 1.6285819933e-02, }; [L51-L53] static const float one_atan = 1.0, huge_atan = 1.0e30, pi_o_4 = 7.8539818525e-01, pi_o_2 = 1.5707963705e+00, pi = 3.1415927410e+00; VAL [aT_atan={7:0}, atanhi_atan={11:0}, atanlo_atan={10:0}, huge_atan=1000000000000000000000000000000, huge_floor=1000000000000000000000000000000, one_atan=1, pi=3141592741/1000000000, pi_o_2=3141592741/2000000000, pi_o_4=3141592741/4000000000] [L139] float x = -0.0f; [L56] float w, s1, s2, z; [L57] __int32_t ix, hx, id; VAL [aT_atan={7:0}, atanhi_atan={11:0}, atanlo_atan={10:0}, huge_atan=1000000000000000000000000000000, huge_floor=1000000000000000000000000000000, one_atan=1, pi=3141592741/1000000000, pi_o_2=3141592741/2000000000, pi_o_4=3141592741/4000000000] [L60] ieee_float_shape_type gf_u; [L61] gf_u.value = (x) [L62] EXPR gf_u.word [L62] (hx) = gf_u.word [L64] ix = hx & 0x7fffffff VAL [aT_atan={7:0}, atanhi_atan={11:0}, atanlo_atan={10:0}, huge_atan=1000000000000000000000000000000, huge_floor=1000000000000000000000000000000, one_atan=1, pi=3141592741/1000000000, pi_o_2=3141592741/2000000000, pi_o_4=3141592741/4000000000] [L65] COND TRUE ix >= 0x50800000 VAL [aT_atan={7:0}, atanhi_atan={11:0}, atanlo_atan={10:0}, huge_atan=1000000000000000000000000000000, huge_floor=1000000000000000000000000000000, one_atan=1, pi=3141592741/1000000000, pi_o_2=3141592741/2000000000, pi_o_4=3141592741/4000000000] [L66] COND TRUE ((ix) > 0x7f800000L) [L67] return x + x; VAL [aT_atan={7:0}, atanhi_atan={11:0}, atanlo_atan={10:0}, huge_atan=1000000000000000000000000000000, huge_floor=1000000000000000000000000000000, one_atan=1, pi=3141592741/1000000000, pi_o_2=3141592741/2000000000, pi_o_4=3141592741/4000000000] [L140] float res = atan_float(x); [L143] EXPR res == -0.0f && __signbit_float(res) == 1 VAL [aT_atan={7:0}, atanhi_atan={11:0}, atanlo_atan={10:0}, huge_atan=1000000000000000000000000000000, huge_floor=1000000000000000000000000000000, one_atan=1, pi=3141592741/1000000000, pi_o_2=3141592741/2000000000, pi_o_4=3141592741/4000000000] [L143] COND TRUE !(res == -0.0f && __signbit_float(res) == 1) [L3] __assert_fail("0", "float_req_bl_0620b.c", 3, "reach_error") VAL [aT_atan={7:0}, atanhi_atan={11:0}, atanlo_atan={10:0}, huge_atan=1000000000000000000000000000000, huge_floor=1000000000000000000000000000000, one_atan=1, pi=3141592741/1000000000, pi_o_2=3141592741/2000000000, pi_o_4=3141592741/4000000000] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 38 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.5s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 48 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=38occurred 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, 21 NumberOfCodeBlocks, 21 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 9 ConstructedInterpolants, 0 QuantifiedInterpolants, 81 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.0-0e1a00c [2020-11-29 14:39:11,031 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 14:39:11,035 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 14:39:11,090 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 14:39:11,090 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 14:39:11,096 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 14:39:11,098 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 14:39:11,105 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 14:39:11,109 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 14:39:11,118 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 14:39:11,120 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 14:39:11,122 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 14:39:11,126 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 14:39:11,129 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 14:39:11,131 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 14:39:11,133 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 14:39:11,134 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 14:39:11,136 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 14:39:11,142 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 14:39:11,145 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 14:39:11,151 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 14:39:11,153 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 14:39:11,154 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 14:39:11,156 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 14:39:11,161 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 14:39:11,166 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 14:39:11,167 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 14:39:11,168 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 14:39:11,170 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 14:39:11,171 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 14:39:11,171 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 14:39:11,172 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 14:39:11,174 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 14:39:11,175 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 14:39:11,177 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 14:39:11,179 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 14:39:11,180 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 14:39:11,180 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 14:39:11,181 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 14:39:11,183 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 14:39:11,184 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 14:39:11,185 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-11-29 14:39:11,233 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 14:39:11,234 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 14:39:11,236 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 14:39:11,236 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 14:39:11,236 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 14:39:11,237 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 14:39:11,237 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 14:39:11,237 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 14:39:11,238 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 14:39:11,238 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-29 14:39:11,238 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-29 14:39:11,238 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-29 14:39:11,239 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-11-29 14:39:11,239 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-11-29 14:39:11,239 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 14:39:11,239 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 14:39:11,240 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 14:39:11,240 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-29 14:39:11,240 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 14:39:11,241 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 14:39:11,241 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-29 14:39:11,241 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-29 14:39:11,241 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 14:39:11,242 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 14:39:11,242 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-29 14:39:11,242 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-29 14:39:11,242 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-11-29 14:39:11,243 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-11-29 14:39:11,243 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-29 14:39:11,243 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 14:39:11,243 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-29 14:39:11,244 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bb223ac5dd337697f7c4caeca580bc7e9e7345b8 [2020-11-29 14:39:11,642 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 14:39:11,695 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 14:39:11,699 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 14:39:11,701 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 14:39:11,702 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 14:39:11,703 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_0620b.c [2020-11-29 14:39:11,803 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6fa0f8311/f867418d83fd4d418d37e3e2fbbb6a91/FLAGd478339e4 [2020-11-29 14:39:12,520 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 14:39:12,521 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_0620b.c [2020-11-29 14:39:12,529 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6fa0f8311/f867418d83fd4d418d37e3e2fbbb6a91/FLAGd478339e4 [2020-11-29 14:39:12,878 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6fa0f8311/f867418d83fd4d418d37e3e2fbbb6a91 [2020-11-29 14:39:12,881 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 14:39:12,889 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 14:39:12,891 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 14:39:12,891 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 14:39:12,896 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 14:39:12,898 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 02:39:12" (1/1) ... [2020-11-29 14:39:12,902 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e3fa1b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:39:12, skipping insertion in model container [2020-11-29 14:39:12,903 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 02:39:12" (1/1) ... [2020-11-29 14:39:12,911 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 14:39:12,955 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 14:39:13,185 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 14:39:13,204 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 14:39:13,259 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 14:39:13,290 INFO L208 MainTranslator]: Completed translation [2020-11-29 14:39:13,291 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:39:13 WrapperNode [2020-11-29 14:39:13,291 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 14:39:13,292 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 14:39:13,293 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 14:39:13,293 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 14:39:13,302 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:39:13" (1/1) ... [2020-11-29 14:39:13,318 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:39:13" (1/1) ... [2020-11-29 14:39:13,352 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 14:39:13,353 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 14:39:13,354 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 14:39:13,354 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 14:39:13,364 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:39:13" (1/1) ... [2020-11-29 14:39:13,364 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:39:13" (1/1) ... [2020-11-29 14:39:13,384 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:39:13" (1/1) ... [2020-11-29 14:39:13,385 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:39:13" (1/1) ... [2020-11-29 14:39:13,400 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:39:13" (1/1) ... [2020-11-29 14:39:13,406 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:39:13" (1/1) ... [2020-11-29 14:39:13,411 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:39:13" (1/1) ... [2020-11-29 14:39:13,417 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 14:39:13,418 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 14:39:13,419 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 14:39:13,419 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 14:39:13,420 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:39:13" (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 [2020-11-29 14:39:13,516 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4 [2020-11-29 14:39:13,517 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-11-29 14:39:13,517 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 14:39:13,517 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2020-11-29 14:39:13,518 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-11-29 14:39:13,518 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 14:39:13,518 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 14:39:13,518 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2020-11-29 14:39:13,519 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2020-11-29 14:39:13,519 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-29 14:39:26,954 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 14:39:26,955 INFO L298 CfgBuilder]: Removed 20 assume(true) statements. [2020-11-29 14:39:26,957 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 02:39:26 BoogieIcfgContainer [2020-11-29 14:39:26,957 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 14:39:26,959 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-29 14:39:26,959 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-29 14:39:26,963 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-29 14:39:26,964 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 02:39:12" (1/3) ... [2020-11-29 14:39:26,964 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@670b065a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 02:39:26, skipping insertion in model container [2020-11-29 14:39:26,965 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:39:13" (2/3) ... [2020-11-29 14:39:26,965 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@670b065a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 02:39:26, skipping insertion in model container [2020-11-29 14:39:26,965 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 02:39:26" (3/3) ... [2020-11-29 14:39:26,967 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_0620b.c [2020-11-29 14:39:26,983 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-29 14:39:26,987 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-29 14:39:27,000 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-29 14:39:27,029 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-29 14:39:27,030 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-29 14:39:27,030 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-29 14:39:27,030 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 14:39:27,030 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 14:39:27,031 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-29 14:39:27,031 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 14:39:27,031 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-29 14:39:27,046 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states. [2020-11-29 14:39:27,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-29 14:39:27,053 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 14:39:27,054 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 14:39:27,054 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 14:39:27,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 14:39:27,061 INFO L82 PathProgramCache]: Analyzing trace with hash 1030429181, now seen corresponding path program 1 times [2020-11-29 14:39:27,076 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 14:39:27,076 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2027145809] [2020-11-29 14:39:27,077 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 [2020-11-29 14:39:28,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 14:39:28,099 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 1 conjunts are in the unsatisfiable core [2020-11-29 14:39:28,105 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 14:39:28,130 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 14:39:28,130 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-29 14:39:28,141 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 14:39:28,143 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2027145809] [2020-11-29 14:39:28,144 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-29 14:39:28,144 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-11-29 14:39:28,145 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349421948] [2020-11-29 14:39:28,150 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-29 14:39:28,150 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-29 14:39:28,165 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-29 14:39:28,166 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-29 14:39:28,168 INFO L87 Difference]: Start difference. First operand 38 states. Second operand 2 states. [2020-11-29 14:39:28,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 14:39:28,191 INFO L93 Difference]: Finished difference Result 73 states and 113 transitions. [2020-11-29 14:39:28,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-29 14:39:28,193 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-11-29 14:39:28,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 14:39:28,204 INFO L225 Difference]: With dead ends: 73 [2020-11-29 14:39:28,205 INFO L226 Difference]: Without dead ends: 34 [2020-11-29 14:39:28,208 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-29 14:39:28,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-11-29 14:39:28,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2020-11-29 14:39:28,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-11-29 14:39:28,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 45 transitions. [2020-11-29 14:39:28,249 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 45 transitions. Word has length 10 [2020-11-29 14:39:28,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 14:39:28,249 INFO L481 AbstractCegarLoop]: Abstraction has 34 states and 45 transitions. [2020-11-29 14:39:28,249 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-29 14:39:28,249 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 45 transitions. [2020-11-29 14:39:28,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-29 14:39:28,250 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 14:39:28,251 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 14:39:28,467 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-11-29 14:39:28,467 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 14:39:28,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 14:39:28,470 INFO L82 PathProgramCache]: Analyzing trace with hash -1304878016, now seen corresponding path program 1 times [2020-11-29 14:39:28,471 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 14:39:28,471 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1807353343] [2020-11-29 14:39:28,471 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 [2020-11-29 14:39:29,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 14:39:29,307 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-29 14:39:29,309 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 14:39:29,581 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 14:39:29,581 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-29 14:39:29,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 14:39:29,950 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1807353343] [2020-11-29 14:39:29,950 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-29 14:39:29,950 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2020-11-29 14:39:29,951 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440745635] [2020-11-29 14:39:29,952 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-29 14:39:29,953 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-29 14:39:29,954 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-29 14:39:29,954 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-11-29 14:39:29,954 INFO L87 Difference]: Start difference. First operand 34 states and 45 transitions. Second operand 8 states. [2020-11-29 14:39:37,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 14:39:37,276 INFO L93 Difference]: Finished difference Result 57 states and 70 transitions. [2020-11-29 14:39:37,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-29 14:39:37,277 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 11 [2020-11-29 14:39:37,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 14:39:37,278 INFO L225 Difference]: With dead ends: 57 [2020-11-29 14:39:37,278 INFO L226 Difference]: Without dead ends: 32 [2020-11-29 14:39:37,284 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-11-29 14:39:37,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-11-29 14:39:37,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 23. [2020-11-29 14:39:37,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-11-29 14:39:37,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2020-11-29 14:39:37,290 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 11 [2020-11-29 14:39:37,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 14:39:37,291 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2020-11-29 14:39:37,291 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-29 14:39:37,291 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2020-11-29 14:39:37,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-29 14:39:37,292 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 14:39:37,292 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 14:39:37,493 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-11-29 14:39:37,494 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 14:39:37,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 14:39:37,495 INFO L82 PathProgramCache]: Analyzing trace with hash -413875709, now seen corresponding path program 1 times [2020-11-29 14:39:37,496 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 14:39:37,497 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [363283649] [2020-11-29 14:39:37,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2020-11-29 14:39:38,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 14:39:38,315 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-29 14:39:38,317 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 14:39:38,586 WARN L197 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 9 DAG size of output: 1 [2020-11-29 14:39:38,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 14:39:38,598 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-29 14:39:38,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 14:39:38,829 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [363283649] [2020-11-29 14:39:38,829 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-29 14:39:38,829 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 7 [2020-11-29 14:39:38,829 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977783397] [2020-11-29 14:39:38,830 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-29 14:39:38,830 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-29 14:39:38,831 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-29 14:39:38,831 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-11-29 14:39:38,831 INFO L87 Difference]: Start difference. First operand 23 states and 26 transitions. Second operand 7 states. [2020-11-29 14:39:50,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 14:39:50,202 INFO L93 Difference]: Finished difference Result 35 states and 37 transitions. [2020-11-29 14:39:50,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-29 14:39:50,205 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 13 [2020-11-29 14:39:50,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 14:39:50,205 INFO L225 Difference]: With dead ends: 35 [2020-11-29 14:39:50,206 INFO L226 Difference]: Without dead ends: 32 [2020-11-29 14:39:50,207 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-11-29 14:39:50,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-11-29 14:39:50,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 25. [2020-11-29 14:39:50,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-11-29 14:39:50,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 28 transitions. [2020-11-29 14:39:50,217 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 28 transitions. Word has length 13 [2020-11-29 14:39:50,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 14:39:50,218 INFO L481 AbstractCegarLoop]: Abstraction has 25 states and 28 transitions. [2020-11-29 14:39:50,218 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-29 14:39:50,218 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 28 transitions. [2020-11-29 14:39:50,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-29 14:39:50,219 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 14:39:50,219 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 14:39:50,431 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-11-29 14:39:50,432 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 14:39:50,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 14:39:50,433 INFO L82 PathProgramCache]: Analyzing trace with hash 1848532469, now seen corresponding path program 1 times [2020-11-29 14:39:50,435 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 14:39:50,435 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1176580309] [2020-11-29 14:39:50,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2020-11-29 14:39:52,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 14:39:52,248 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-29 14:39:52,250 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 14:39:52,524 WARN L197 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2020-11-29 14:39:52,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 14:39:52,545 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-29 14:39:53,236 WARN L197 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 6 [2020-11-29 14:39:53,505 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 14:39:53,506 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1176580309] [2020-11-29 14:39:53,506 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-29 14:39:53,506 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2020-11-29 14:39:53,506 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542237954] [2020-11-29 14:39:53,507 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-29 14:39:53,509 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-29 14:39:53,510 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-29 14:39:53,510 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-11-29 14:39:53,511 INFO L87 Difference]: Start difference. First operand 25 states and 28 transitions. Second operand 6 states. [2020-11-29 14:39:53,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 14:39:53,780 INFO L93 Difference]: Finished difference Result 32 states and 34 transitions. [2020-11-29 14:39:53,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 14:39:53,785 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2020-11-29 14:39:53,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 14:39:53,786 INFO L225 Difference]: With dead ends: 32 [2020-11-29 14:39:53,786 INFO L226 Difference]: Without dead ends: 18 [2020-11-29 14:39:53,787 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-11-29 14:39:53,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2020-11-29 14:39:53,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2020-11-29 14:39:53,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-11-29 14:39:53,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 17 transitions. [2020-11-29 14:39:53,791 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 17 transitions. Word has length 16 [2020-11-29 14:39:53,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 14:39:53,792 INFO L481 AbstractCegarLoop]: Abstraction has 18 states and 17 transitions. [2020-11-29 14:39:53,792 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-29 14:39:53,792 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 17 transitions. [2020-11-29 14:39:53,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-29 14:39:53,793 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 14:39:53,793 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 14:39:53,994 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-11-29 14:39:53,994 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 14:39:53,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 14:39:53,996 INFO L82 PathProgramCache]: Analyzing trace with hash 712330328, now seen corresponding path program 1 times [2020-11-29 14:39:53,997 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 14:39:53,997 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1873621827] [2020-11-29 14:39:53,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 6 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2020-11-29 14:39:54,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 14:39:54,865 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 14 conjunts are in the unsatisfiable core [2020-11-29 14:39:54,867 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 14:39:55,300 INFO L626 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 14:39:55,630 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 14:39:55,630 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-29 14:39:56,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 14:39:56,947 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1873621827] [2020-11-29 14:39:56,947 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-29 14:39:56,948 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [] total 14 [2020-11-29 14:39:56,948 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084920698] [2020-11-29 14:39:56,949 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-11-29 14:39:56,949 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-29 14:39:56,949 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-11-29 14:39:56,950 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2020-11-29 14:39:56,950 INFO L87 Difference]: Start difference. First operand 18 states and 17 transitions. Second operand 14 states. [2020-11-29 14:39:57,928 WARN L197 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2020-11-29 14:39:58,106 WARN L197 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 23 [2020-11-29 14:39:58,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 14:39:58,135 INFO L93 Difference]: Finished difference Result 18 states and 17 transitions. [2020-11-29 14:39:58,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-29 14:39:58,137 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 17 [2020-11-29 14:39:58,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 14:39:58,138 INFO L225 Difference]: With dead ends: 18 [2020-11-29 14:39:58,138 INFO L226 Difference]: Without dead ends: 0 [2020-11-29 14:39:58,139 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=93, Invalid=249, Unknown=0, NotChecked=0, Total=342 [2020-11-29 14:39:58,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-29 14:39:58,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-29 14:39:58,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-29 14:39:58,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-29 14:39:58,140 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-11-29 14:39:58,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 14:39:58,141 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-29 14:39:58,141 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-11-29 14:39:58,141 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-29 14:39:58,141 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-29 14:39:58,350 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2020-11-29 14:39:58,354 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-29 14:39:58,664 WARN L197 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 36 [2020-11-29 14:39:58,775 WARN L197 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-11-29 14:39:58,955 WARN L197 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 25 [2020-11-29 14:39:59,050 INFO L262 CegarLoopResult]: For program point L143(line 143) no Hoare annotation was computed. [2020-11-29 14:39:59,050 INFO L262 CegarLoopResult]: For program point L143-2(lines 143 146) no Hoare annotation was computed. [2020-11-29 14:39:59,050 INFO L262 CegarLoopResult]: For program point L3(line 3) no Hoare annotation was computed. [2020-11-29 14:39:59,051 INFO L262 CegarLoopResult]: For program point L3-1(line 3) no Hoare annotation was computed. [2020-11-29 14:39:59,051 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-29 14:39:59,051 INFO L262 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-11-29 14:39:59,051 INFO L258 CegarLoopResult]: At program point L28(lines 16 29) the Hoare annotation is: false [2020-11-29 14:39:59,051 INFO L262 CegarLoopResult]: For program point L111(lines 111 116) no Hoare annotation was computed. [2020-11-29 14:39:59,051 INFO L258 CegarLoopResult]: At program point L128(lines 119 129) the Hoare annotation is: (let ((.cse0 (fp.neg (_ +zero 8 24)))) (and (= ULTIMATE.start_atan_float_~x .cse0) (= |ULTIMATE.start_atan_float_#res| .cse0) (= (bvadd |ULTIMATE.start___signbit_float_#res| (_ bv4294967295 32)) (_ bv0 32)) (= currentRoundingMode roundNearestTiesToEven) (= ((_ to_fp 8 24) currentRoundingMode ((_ to_fp 11 53) currentRoundingMode 1.0)) ~one_atan~0) (= ~huge_atan~0 ((_ to_fp 8 24) currentRoundingMode ((_ to_fp 11 53) currentRoundingMode 1000000000000000000000000000000.0))) (= .cse0 ULTIMATE.start___signbit_float_~x) (= .cse0 ULTIMATE.start_main_~res~0) (= .cse0 (fp ((_ extract 31 31) ULTIMATE.start___signbit_float_~w~1) ((_ extract 30 23) ULTIMATE.start___signbit_float_~w~1) ((_ extract 22 0) ULTIMATE.start___signbit_float_~w~1))) |ULTIMATE.start_main_#t~short36|)) [2020-11-29 14:39:59,052 INFO L262 CegarLoopResult]: For program point L122-1(lines 122 126) no Hoare annotation was computed. [2020-11-29 14:39:59,052 INFO L258 CegarLoopResult]: At program point L122-2(lines 122 126) the Hoare annotation is: (let ((.cse0 (fp.neg (_ +zero 8 24)))) (and (= ULTIMATE.start_atan_float_~x .cse0) (= |ULTIMATE.start_atan_float_#res| .cse0) (= currentRoundingMode roundNearestTiesToEven) (= ((_ to_fp 8 24) currentRoundingMode ((_ to_fp 11 53) currentRoundingMode 1.0)) ~one_atan~0) (= ~huge_atan~0 ((_ to_fp 8 24) currentRoundingMode ((_ to_fp 11 53) currentRoundingMode 1000000000000000000000000000000.0))) (= .cse0 ULTIMATE.start___signbit_float_~x) (= .cse0 ULTIMATE.start_main_~res~0) |ULTIMATE.start_main_#t~short36|)) [2020-11-29 14:39:59,052 INFO L262 CegarLoopResult]: For program point L23(lines 23 27) no Hoare annotation was computed. [2020-11-29 14:39:59,052 INFO L262 CegarLoopResult]: For program point L122-3(lines 122 126) no Hoare annotation was computed. [2020-11-29 14:39:59,053 INFO L262 CegarLoopResult]: For program point L23-1(lines 16 29) no Hoare annotation was computed. [2020-11-29 14:39:59,053 INFO L262 CegarLoopResult]: For program point L23-2(lines 23 27) no Hoare annotation was computed. [2020-11-29 14:39:59,053 INFO L262 CegarLoopResult]: For program point L81(lines 81 97) no Hoare annotation was computed. [2020-11-29 14:39:59,053 INFO L262 CegarLoopResult]: For program point L73(lines 73 98) no Hoare annotation was computed. [2020-11-29 14:39:59,053 INFO L262 CegarLoopResult]: For program point L65(lines 65 72) no Hoare annotation was computed. [2020-11-29 14:39:59,054 INFO L262 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-11-29 14:39:59,054 INFO L262 CegarLoopResult]: For program point L90(lines 90 96) no Hoare annotation was computed. [2020-11-29 14:39:59,054 INFO L262 CegarLoopResult]: For program point L90-2(lines 73 98) no Hoare annotation was computed. [2020-11-29 14:39:59,054 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-11-29 14:39:59,054 INFO L265 CegarLoopResult]: At program point L148(lines 131 149) the Hoare annotation is: true [2020-11-29 14:39:59,054 INFO L262 CegarLoopResult]: For program point L115(line 115) no Hoare annotation was computed. [2020-11-29 14:39:59,055 INFO L262 CegarLoopResult]: For program point L82(lines 82 88) no Hoare annotation was computed. [2020-11-29 14:39:59,055 INFO L262 CegarLoopResult]: For program point L115-2(line 115) no Hoare annotation was computed. [2020-11-29 14:39:59,055 INFO L258 CegarLoopResult]: At program point L115-3(lines 55 117) the Hoare annotation is: (let ((.cse0 (fp.neg (_ +zero 8 24)))) (and (= ULTIMATE.start_atan_float_~x .cse0) (= |ULTIMATE.start_atan_float_#res| .cse0) (= currentRoundingMode roundNearestTiesToEven) (= ((_ to_fp 8 24) currentRoundingMode ((_ to_fp 11 53) currentRoundingMode 1.0)) ~one_atan~0) (= ~huge_atan~0 ((_ to_fp 8 24) currentRoundingMode ((_ to_fp 11 53) currentRoundingMode 1000000000000000000000000000000.0))))) [2020-11-29 14:39:59,055 INFO L262 CegarLoopResult]: For program point L74(lines 74 77) no Hoare annotation was computed. [2020-11-29 14:39:59,055 INFO L262 CegarLoopResult]: For program point L74-2(lines 74 77) no Hoare annotation was computed. [2020-11-29 14:39:59,056 INFO L262 CegarLoopResult]: For program point L66(lines 66 67) no Hoare annotation was computed. [2020-11-29 14:39:59,056 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-29 14:39:59,056 INFO L262 CegarLoopResult]: For program point L75(lines 75 76) no Hoare annotation was computed. [2020-11-29 14:39:59,056 INFO L262 CegarLoopResult]: For program point L59-1(lines 59 63) no Hoare annotation was computed. [2020-11-29 14:39:59,057 INFO L258 CegarLoopResult]: At program point L59-2(lines 59 63) the Hoare annotation is: (and (= ULTIMATE.start_atan_float_~x (fp.neg (_ +zero 8 24))) (= currentRoundingMode roundNearestTiesToEven) (= ((_ to_fp 8 24) currentRoundingMode ((_ to_fp 11 53) currentRoundingMode 1.0)) ~one_atan~0) (= ~huge_atan~0 ((_ to_fp 8 24) currentRoundingMode ((_ to_fp 11 53) currentRoundingMode 1000000000000000000000000000000.0)))) [2020-11-29 14:39:59,057 INFO L262 CegarLoopResult]: For program point L59-3(lines 59 63) no Hoare annotation was computed. [2020-11-29 14:39:59,057 INFO L262 CegarLoopResult]: For program point L18-1(lines 18 22) no Hoare annotation was computed. [2020-11-29 14:39:59,057 INFO L258 CegarLoopResult]: At program point L18-2(lines 18 22) the Hoare annotation is: false [2020-11-29 14:39:59,057 INFO L262 CegarLoopResult]: For program point L68(lines 68 71) no Hoare annotation was computed. [2020-11-29 14:39:59,068 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-29 14:39:59,071 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-29 14:39:59,072 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-29 14:39:59,072 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-29 14:39:59,072 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-29 14:39:59,073 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-29 14:39:59,076 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-29 14:39:59,076 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-29 14:39:59,076 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-29 14:39:59,077 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-29 14:39:59,077 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-29 14:39:59,077 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-29 14:39:59,079 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-29 14:39:59,079 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-29 14:39:59,083 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-29 14:39:59,084 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-29 14:39:59,084 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-29 14:39:59,084 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-29 14:39:59,085 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-29 14:39:59,086 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-29 14:39:59,087 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-29 14:39:59,087 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-29 14:39:59,087 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-29 14:39:59,087 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-29 14:39:59,088 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-29 14:39:59,089 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-29 14:39:59,089 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-29 14:39:59,089 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-29 14:39:59,090 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-29 14:39:59,090 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-29 14:39:59,090 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-29 14:39:59,091 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-29 14:39:59,091 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-29 14:39:59,091 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-29 14:39:59,092 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-29 14:39:59,092 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-29 14:39:59,093 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-29 14:39:59,093 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-29 14:39:59,093 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-29 14:39:59,094 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-29 14:39:59,094 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-29 14:39:59,094 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-29 14:39:59,094 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-29 14:39:59,095 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-29 14:39:59,095 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-29 14:39:59,095 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-29 14:39:59,096 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-29 14:39:59,096 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-29 14:39:59,098 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 02:39:59 BoogieIcfgContainer [2020-11-29 14:39:59,098 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-29 14:39:59,099 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 14:39:59,099 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 14:39:59,100 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 14:39:59,100 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 02:39:26" (3/4) ... [2020-11-29 14:39:59,104 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-29 14:39:59,119 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2020-11-29 14:39:59,120 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2020-11-29 14:39:59,120 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-29 14:39:59,121 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-29 14:39:59,152 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((x == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) && \result == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven) && ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 1.0)) == one_atan) && huge_atan == ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 1.0E30)) [2020-11-29 14:39:59,153 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((x == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) && \result == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven) && ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 1.0)) == one_atan) && huge_atan == ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 1.0E30))) && ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == x) && ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == res) && aux-res == -0.0f && __signbit_float(res) == 1-aux [2020-11-29 14:39:59,154 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((((x == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) && \result == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && ~bvadd64(\result, 4294967295bv32) == 0bv32) && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven) && ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 1.0)) == one_atan) && huge_atan == ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 1.0E30))) && ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == x) && ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == res) && ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) && aux-res == -0.0f && __signbit_float(res) == 1-aux [2020-11-29 14:39:59,202 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-11-29 14:39:59,202 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 14:39:59,204 INFO L168 Benchmark]: Toolchain (without parser) took 46320.13 ms. Allocated memory was 52.4 MB in the beginning and 62.9 MB in the end (delta: 10.5 MB). Free memory was 29.4 MB in the beginning and 36.3 MB in the end (delta: -6.9 MB). Peak memory consumption was 5.3 MB. Max. memory is 16.1 GB. [2020-11-29 14:39:59,205 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 39.8 MB. Free memory was 18.1 MB in the beginning and 18.0 MB in the end (delta: 70.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 14:39:59,205 INFO L168 Benchmark]: CACSL2BoogieTranslator took 400.27 ms. Allocated memory is still 52.4 MB. Free memory was 28.8 MB in the beginning and 26.3 MB in the end (delta: 2.5 MB). Peak memory consumption was 3.5 MB. Max. memory is 16.1 GB. [2020-11-29 14:39:59,206 INFO L168 Benchmark]: Boogie Procedure Inliner took 60.05 ms. Allocated memory is still 52.4 MB. Free memory was 26.1 MB in the beginning and 23.8 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 14:39:59,206 INFO L168 Benchmark]: Boogie Preprocessor took 64.07 ms. Allocated memory is still 52.4 MB. Free memory was 23.8 MB in the beginning and 34.7 MB in the end (delta: -11.0 MB). Peak memory consumption was 5.5 MB. Max. memory is 16.1 GB. [2020-11-29 14:39:59,207 INFO L168 Benchmark]: RCFGBuilder took 13538.97 ms. Allocated memory was 52.4 MB in the beginning and 62.9 MB in the end (delta: 10.5 MB). Free memory was 34.7 MB in the beginning and 43.2 MB in the end (delta: -8.5 MB). Peak memory consumption was 16.5 MB. Max. memory is 16.1 GB. [2020-11-29 14:39:59,208 INFO L168 Benchmark]: TraceAbstraction took 32139.51 ms. Allocated memory is still 62.9 MB. Free memory was 42.9 MB in the beginning and 42.0 MB in the end (delta: 952.9 kB). Peak memory consumption was 24.1 MB. Max. memory is 16.1 GB. [2020-11-29 14:39:59,208 INFO L168 Benchmark]: Witness Printer took 103.38 ms. Allocated memory is still 62.9 MB. Free memory was 41.5 MB in the beginning and 36.3 MB in the end (delta: 5.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-29 14:39:59,211 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 39.8 MB. Free memory was 18.1 MB in the beginning and 18.0 MB in the end (delta: 70.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 400.27 ms. Allocated memory is still 52.4 MB. Free memory was 28.8 MB in the beginning and 26.3 MB in the end (delta: 2.5 MB). Peak memory consumption was 3.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 60.05 ms. Allocated memory is still 52.4 MB. Free memory was 26.1 MB in the beginning and 23.8 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 64.07 ms. Allocated memory is still 52.4 MB. Free memory was 23.8 MB in the beginning and 34.7 MB in the end (delta: -11.0 MB). Peak memory consumption was 5.5 MB. Max. memory is 16.1 GB. * RCFGBuilder took 13538.97 ms. Allocated memory was 52.4 MB in the beginning and 62.9 MB in the end (delta: 10.5 MB). Free memory was 34.7 MB in the beginning and 43.2 MB in the end (delta: -8.5 MB). Peak memory consumption was 16.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 32139.51 ms. Allocated memory is still 62.9 MB. Free memory was 42.9 MB in the beginning and 42.0 MB in the end (delta: 952.9 kB). Peak memory consumption was 24.1 MB. Max. memory is 16.1 GB. * Witness Printer took 103.38 ms. Allocated memory is still 62.9 MB. Free memory was 41.5 MB in the beginning and 36.3 MB in the end (delta: 5.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 3]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 55]: Loop Invariant [2020-11-29 14:39:59,227 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-29 14:39:59,228 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-29 14:39:59,228 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-29 14:39:59,228 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-29 14:39:59,229 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-29 14:39:59,229 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-29 14:39:59,229 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-29 14:39:59,230 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-29 14:39:59,230 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-29 14:39:59,230 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-29 14:39:59,230 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-29 14:39:59,230 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode Derived loop invariant: (((x == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) && \result == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven) && ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 1.0)) == one_atan) && huge_atan == ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 1.0E30)) - InvariantResult [Line: 119]: Loop Invariant [2020-11-29 14:39:59,231 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-29 14:39:59,232 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-29 14:39:59,232 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-29 14:39:59,232 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-29 14:39:59,232 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-29 14:39:59,233 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-29 14:39:59,233 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-29 14:39:59,234 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-29 14:39:59,234 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-29 14:39:59,234 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-29 14:39:59,234 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-29 14:39:59,234 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode Derived loop invariant: ((((((((x == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) && \result == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && ~bvadd64(\result, 4294967295bv32) == 0bv32) && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven) && ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 1.0)) == one_atan) && huge_atan == ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 1.0E30))) && ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == x) && ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == res) && ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) && aux-res == -0.0f && __signbit_float(res) == 1-aux - InvariantResult [Line: 18]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 16]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 122]: Loop Invariant [2020-11-29 14:39:59,236 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-29 14:39:59,236 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-29 14:39:59,236 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-29 14:39:59,237 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-29 14:39:59,237 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-29 14:39:59,237 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-29 14:39:59,238 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-29 14:39:59,238 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-29 14:39:59,238 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-29 14:39:59,238 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-29 14:39:59,239 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-29 14:39:59,239 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode Derived loop invariant: ((((((x == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) && \result == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven) && ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 1.0)) == one_atan) && huge_atan == ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 1.0E30))) && ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == x) && ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == res) && aux-res == -0.0f && __signbit_float(res) == 1-aux - InvariantResult [Line: 59]: Loop Invariant [2020-11-29 14:39:59,239 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-29 14:39:59,240 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-29 14:39:59,240 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-29 14:39:59,240 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-29 14:39:59,240 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-29 14:39:59,241 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-29 14:39:59,241 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-29 14:39:59,241 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-29 14:39:59,242 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-29 14:39:59,242 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-29 14:39:59,242 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-29 14:39:59,242 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode Derived loop invariant: ((x == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven) && ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 1.0)) == one_atan) && huge_atan == ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 1.0E30)) - InvariantResult [Line: 131]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 38 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 31.3s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 20.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.6s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 111 SDtfs, 183 SDslu, 183 SDs, 0 SdLazy, 76 SolverSat, 13 SolverUnsat, 6 SolverUnknown, 0 SolverNotchecked, 18.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 133 GetRequests, 95 SyntacticMatches, 2 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 5.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=38occurred 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, 5 MinimizatonAttempts, 16 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 7 PreInvPairs, 12 NumberOfFragments, 136 HoareAnnotationTreeSize, 7 FomulaSimplifications, 24 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.6s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 4.7s SatisfiabilityAnalysisTime, 4.8s InterpolantComputationTime, 67 NumberOfCodeBlocks, 67 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 124 ConstructedInterpolants, 12 QuantifiedInterpolants, 9709 SizeOfPredicates, 28 NumberOfNonLiveVariables, 523 ConjunctsInSsa, 37 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...