./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/float-newlib/float_req_bl_1210.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 54858612 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/float-newlib/float_req_bl_1210.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 6a2ce6cad1ff26c462bd542dafb3ac3798055daa .................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/float-newlib/float_req_bl_1210.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 6a2ce6cad1ff26c462bd542dafb3ac3798055daa ...................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.0-5485861 [2020-10-25 22:01:00,045 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-25 22:01:00,048 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-25 22:01:00,096 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-25 22:01:00,096 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-25 22:01:00,098 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-25 22:01:00,100 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-25 22:01:00,102 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-25 22:01:00,104 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-25 22:01:00,105 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-25 22:01:00,107 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-25 22:01:00,108 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-25 22:01:00,109 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-25 22:01:00,110 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-25 22:01:00,111 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-25 22:01:00,113 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-25 22:01:00,114 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-25 22:01:00,116 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-25 22:01:00,118 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-25 22:01:00,124 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-25 22:01:00,127 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-25 22:01:00,129 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-25 22:01:00,131 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-25 22:01:00,133 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-25 22:01:00,145 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-25 22:01:00,145 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-25 22:01:00,146 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-25 22:01:00,150 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-25 22:01:00,151 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-25 22:01:00,154 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-25 22:01:00,154 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-25 22:01:00,155 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-25 22:01:00,156 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-25 22:01:00,158 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-25 22:01:00,162 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-25 22:01:00,163 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-25 22:01:00,164 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-25 22:01:00,165 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-25 22:01:00,165 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-25 22:01:00,167 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-25 22:01:00,168 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-25 22:01:00,169 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-25 22:01:00,232 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-25 22:01:00,234 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-25 22:01:00,237 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-25 22:01:00,237 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-25 22:01:00,237 INFO L138 SettingsManager]: * Use SBE=true [2020-10-25 22:01:00,238 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-25 22:01:00,238 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-25 22:01:00,238 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-25 22:01:00,239 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-25 22:01:00,239 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-25 22:01:00,240 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-25 22:01:00,241 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-25 22:01:00,241 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-25 22:01:00,241 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-25 22:01:00,242 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-25 22:01:00,242 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-25 22:01:00,242 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-25 22:01:00,243 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-25 22:01:00,243 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-25 22:01:00,243 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-25 22:01:00,243 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-25 22:01:00,244 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-25 22:01:00,244 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-25 22:01:00,245 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-25 22:01:00,245 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-25 22:01:00,245 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-25 22:01:00,246 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-25 22:01:00,246 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-25 22:01:00,246 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-25 22:01:00,246 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6a2ce6cad1ff26c462bd542dafb3ac3798055daa [2020-10-25 22:01:00,672 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-25 22:01:00,715 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-25 22:01:00,721 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-25 22:01:00,723 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-25 22:01:00,724 INFO L275 PluginConnector]: CDTParser initialized [2020-10-25 22:01:00,725 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/float_req_bl_1210.c [2020-10-25 22:01:00,806 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a4efba46e/d3a4ccb3fb5a46ea94ee0442e8986c71/FLAG8cd223da1 [2020-10-25 22:01:01,518 INFO L306 CDTParser]: Found 1 translation units. [2020-10-25 22:01:01,519 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/float_req_bl_1210.c [2020-10-25 22:01:01,530 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a4efba46e/d3a4ccb3fb5a46ea94ee0442e8986c71/FLAG8cd223da1 [2020-10-25 22:01:01,851 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a4efba46e/d3a4ccb3fb5a46ea94ee0442e8986c71 [2020-10-25 22:01:01,854 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-25 22:01:01,863 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-25 22:01:01,868 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-25 22:01:01,868 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-25 22:01:01,875 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-25 22:01:01,877 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 10:01:01" (1/1) ... [2020-10-25 22:01:01,881 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f4ab551 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:01:01, skipping insertion in model container [2020-10-25 22:01:01,881 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 10:01:01" (1/1) ... [2020-10-25 22:01:01,892 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-25 22:01:01,929 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-25 22:01:02,265 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-25 22:01:02,280 INFO L203 MainTranslator]: Completed pre-run [2020-10-25 22:01:02,348 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-25 22:01:02,370 INFO L208 MainTranslator]: Completed translation [2020-10-25 22:01:02,372 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:01:02 WrapperNode [2020-10-25 22:01:02,372 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-25 22:01:02,374 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-25 22:01:02,374 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-25 22:01:02,375 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-25 22:01:02,384 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:01:02" (1/1) ... [2020-10-25 22:01:02,394 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:01:02" (1/1) ... [2020-10-25 22:01:02,424 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-25 22:01:02,425 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-25 22:01:02,425 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-25 22:01:02,425 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-25 22:01:02,439 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:01:02" (1/1) ... [2020-10-25 22:01:02,440 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:01:02" (1/1) ... [2020-10-25 22:01:02,444 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:01:02" (1/1) ... [2020-10-25 22:01:02,445 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:01:02" (1/1) ... [2020-10-25 22:01:02,456 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:01:02" (1/1) ... [2020-10-25 22:01:02,462 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:01:02" (1/1) ... [2020-10-25 22:01:02,465 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:01:02" (1/1) ... [2020-10-25 22:01:02,469 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-25 22:01:02,470 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-25 22:01:02,470 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-25 22:01:02,471 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-25 22:01:02,472 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:01:02" (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 [2020-10-25 22:01:02,565 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-25 22:01:02,565 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-25 22:01:02,565 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-25 22:01:02,566 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-25 22:01:02,566 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-25 22:01:02,566 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-25 22:01:02,566 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-25 22:01:02,566 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-25 22:01:02,567 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-25 22:01:03,229 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-25 22:01:03,229 INFO L298 CfgBuilder]: Removed 26 assume(true) statements. [2020-10-25 22:01:03,231 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 10:01:03 BoogieIcfgContainer [2020-10-25 22:01:03,232 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-25 22:01:03,234 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-25 22:01:03,234 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-25 22:01:03,239 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-25 22:01:03,240 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.10 10:01:01" (1/3) ... [2020-10-25 22:01:03,241 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74e649f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 10:01:03, skipping insertion in model container [2020-10-25 22:01:03,241 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:01:02" (2/3) ... [2020-10-25 22:01:03,242 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74e649f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 10:01:03, skipping insertion in model container [2020-10-25 22:01:03,242 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 10:01:03" (3/3) ... [2020-10-25 22:01:03,244 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1210.c [2020-10-25 22:01:03,260 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-25 22:01:03,266 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-25 22:01:03,285 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-25 22:01:03,322 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-25 22:01:03,323 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-25 22:01:03,323 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-25 22:01:03,323 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-25 22:01:03,324 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-25 22:01:03,324 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-25 22:01:03,324 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-25 22:01:03,325 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-25 22:01:03,344 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states. [2020-10-25 22:01:03,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-25 22:01:03,351 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 22:01:03,352 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 22:01:03,353 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 22:01:03,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 22:01:03,360 INFO L82 PathProgramCache]: Analyzing trace with hash -556426464, now seen corresponding path program 1 times [2020-10-25 22:01:03,371 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 22:01:03,372 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1771674577] [2020-10-25 22:01:03,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 22:01:03,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 22:01:03,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 22:01:03,545 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1771674577] [2020-10-25 22:01:03,546 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-25 22:01:03,546 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-25 22:01:03,547 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026029842] [2020-10-25 22:01:03,552 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-25 22:01:03,553 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 22:01:03,567 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-25 22:01:03,568 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-25 22:01:03,571 INFO L87 Difference]: Start difference. First operand 35 states. Second operand 2 states. [2020-10-25 22:01:03,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 22:01:03,595 INFO L93 Difference]: Finished difference Result 67 states and 103 transitions. [2020-10-25 22:01:03,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-25 22:01:03,596 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 13 [2020-10-25 22:01:03,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 22:01:03,607 INFO L225 Difference]: With dead ends: 67 [2020-10-25 22:01:03,608 INFO L226 Difference]: Without dead ends: 31 [2020-10-25 22:01:03,611 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 [2020-10-25 22:01:03,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-10-25 22:01:03,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2020-10-25 22:01:03,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-10-25 22:01:03,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 34 transitions. [2020-10-25 22:01:03,671 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 34 transitions. Word has length 13 [2020-10-25 22:01:03,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 22:01:03,672 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 34 transitions. [2020-10-25 22:01:03,672 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-25 22:01:03,673 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 34 transitions. [2020-10-25 22:01:03,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-25 22:01:03,674 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 22:01:03,674 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 22:01:03,675 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-25 22:01:03,675 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 22:01:03,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 22:01:03,676 INFO L82 PathProgramCache]: Analyzing trace with hash -56818241, now seen corresponding path program 1 times [2020-10-25 22:01:03,676 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 22:01:03,677 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353854933] [2020-10-25 22:01:03,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 22:01:03,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 22:01:03,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 22:01:03,778 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1353854933] [2020-10-25 22:01:03,779 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-25 22:01:03,779 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-25 22:01:03,779 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945834190] [2020-10-25 22:01:03,781 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-25 22:01:03,781 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 22:01:03,782 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-25 22:01:03,783 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-25 22:01:03,783 INFO L87 Difference]: Start difference. First operand 31 states and 34 transitions. Second operand 3 states. [2020-10-25 22:01:03,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 22:01:03,806 INFO L93 Difference]: Finished difference Result 34 states and 36 transitions. [2020-10-25 22:01:03,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-25 22:01:03,807 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 15 [2020-10-25 22:01:03,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 22:01:03,808 INFO L225 Difference]: With dead ends: 34 [2020-10-25 22:01:03,809 INFO L226 Difference]: Without dead ends: 31 [2020-10-25 22:01:03,810 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-25 22:01:03,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-10-25 22:01:03,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2020-10-25 22:01:03,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-10-25 22:01:03,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 33 transitions. [2020-10-25 22:01:03,817 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 33 transitions. Word has length 15 [2020-10-25 22:01:03,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 22:01:03,818 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 33 transitions. [2020-10-25 22:01:03,819 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-25 22:01:03,819 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 33 transitions. [2020-10-25 22:01:03,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-25 22:01:03,820 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 22:01:03,820 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 22:01:03,821 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-25 22:01:03,821 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 22:01:03,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 22:01:03,822 INFO L82 PathProgramCache]: Analyzing trace with hash -1761490312, now seen corresponding path program 1 times [2020-10-25 22:01:03,822 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 22:01:03,823 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438975216] [2020-10-25 22:01:03,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 22:01:03,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-25 22:01:03,883 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-25 22:01:03,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-25 22:01:03,934 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-25 22:01:03,990 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-25 22:01:03,992 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-25 22:01:03,996 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-25 22:01:04,069 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.10 10:01:04 BoogieIcfgContainer [2020-10-25 22:01:04,070 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-25 22:01:04,071 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-25 22:01:04,071 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-25 22:01:04,072 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-25 22:01:04,073 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 10:01:03" (3/4) ... [2020-10-25 22:01:04,078 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-25 22:01:04,079 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-25 22:01:04,085 INFO L168 Benchmark]: Toolchain (without parser) took 2225.32 ms. Allocated memory was 48.2 MB in the beginning and 60.8 MB in the end (delta: 12.6 MB). Free memory was 25.0 MB in the beginning and 25.6 MB in the end (delta: -629.8 kB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2020-10-25 22:01:04,086 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 48.2 MB. Free memory was 34.5 MB in the beginning and 34.4 MB in the end (delta: 33.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-25 22:01:04,087 INFO L168 Benchmark]: CACSL2BoogieTranslator took 504.63 ms. Allocated memory is still 48.2 MB. Free memory was 24.3 MB in the beginning and 26.8 MB in the end (delta: -2.5 MB). Peak memory consumption was 5.5 MB. Max. memory is 16.1 GB. [2020-10-25 22:01:04,096 INFO L168 Benchmark]: Boogie Procedure Inliner took 50.06 ms. Allocated memory is still 48.2 MB. Free memory was 26.8 MB in the beginning and 24.9 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-25 22:01:04,098 INFO L168 Benchmark]: Boogie Preprocessor took 44.46 ms. Allocated memory is still 48.2 MB. Free memory was 24.9 MB in the beginning and 23.3 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-25 22:01:04,099 INFO L168 Benchmark]: RCFGBuilder took 761.58 ms. Allocated memory was 48.2 MB in the beginning and 60.8 MB in the end (delta: 12.6 MB). Free memory was 23.2 MB in the beginning and 40.5 MB in the end (delta: -17.3 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-10-25 22:01:04,102 INFO L168 Benchmark]: TraceAbstraction took 836.17 ms. Allocated memory is still 60.8 MB. Free memory was 40.0 MB in the beginning and 25.9 MB in the end (delta: 14.0 MB). Peak memory consumption was 15.5 MB. Max. memory is 16.1 GB. [2020-10-25 22:01:04,107 INFO L168 Benchmark]: Witness Printer took 9.37 ms. Allocated memory is still 60.8 MB. Free memory was 25.9 MB in the beginning and 25.6 MB in the end (delta: 324.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-25 22:01:04,118 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 48.2 MB. Free memory was 34.5 MB in the beginning and 34.4 MB in the end (delta: 33.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 504.63 ms. Allocated memory is still 48.2 MB. Free memory was 24.3 MB in the beginning and 26.8 MB in the end (delta: -2.5 MB). Peak memory consumption was 5.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 50.06 ms. Allocated memory is still 48.2 MB. Free memory was 26.8 MB in the beginning and 24.9 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 44.46 ms. Allocated memory is still 48.2 MB. Free memory was 24.9 MB in the beginning and 23.3 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 761.58 ms. Allocated memory was 48.2 MB in the beginning and 60.8 MB in the end (delta: 12.6 MB). Free memory was 23.2 MB in the beginning and 40.5 MB in the end (delta: -17.3 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 836.17 ms. Allocated memory is still 60.8 MB. Free memory was 40.0 MB in the beginning and 25.9 MB in the end (delta: 14.0 MB). Peak memory consumption was 15.5 MB. Max. memory is 16.1 GB. * Witness Printer took 9.37 ms. Allocated memory is still 60.8 MB. Free memory was 25.9 MB in the beginning and 25.6 MB in the end (delta: 324.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 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 75, overapproximation of someBinaryArithmeticFLOAToperation at line 82, overapproximation of bitwiseAnd at line 28. Possible FailurePath: [L13] static const float one_modf = 1.0; VAL [one_modf=1] [L82] float x = 0.0f / 0.0f; [L83] float iptr; [L16] __int32_t i0, j0; [L17] __uint32_t i; VAL [one_modf=1] [L19] ieee_float_shape_type gf_u; [L20] gf_u.value = (x) [L21] EXPR gf_u.word [L21] (i0) = gf_u.word [L23] j0 = ((i0 >> 23) & 0xff) - 0x7f VAL [one_modf=1] [L24] COND TRUE j0 < 23 VAL [one_modf=1] [L25] COND TRUE j0 < 0 VAL [one_modf=1] [L27] ieee_float_shape_type sf_u; [L28] sf_u.word = (i0 & 0x80000000) [L29] EXPR sf_u.value [L29] (*iptr) = sf_u.value [L31] return x; VAL [one_modf=1] [L84] float res = modf_float(x, &iptr); [L87] EXPR \read(iptr) [L75] return x != x; VAL [one_modf=1] [L87] isnan_float(iptr) && !isnan_float(res) [L75] return x != x; VAL [one_modf=1] [L87] isnan_float(iptr) && !isnan_float(res) VAL [one_modf=1] [L87] COND TRUE isnan_float(iptr) && !isnan_float(res) [L3] __assert_fail("0", "float_req_bl_1210.c", 3, "reach_error") VAL [one_modf=1] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 35 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.6s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 71 SDtfs, 0 SDslu, 28 SDs, 0 SdLazy, 5 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=35occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 44 NumberOfCodeBlocks, 44 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 26 ConstructedInterpolants, 0 QuantifiedInterpolants, 354 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.0-5485861 [2020-10-25 22:01:06,736 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-25 22:01:06,739 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-25 22:01:06,776 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-10-25 22:01:06,819 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-25 22:01:06,820 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-25 22:01:06,821 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-25 22:01:06,823 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-25 22:01:06,824 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-25 22:01:06,825 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-25 22:01:06,826 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-25 22:01:06,826 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-25 22:01:06,827 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-25 22:01:06,828 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-25 22:01:06,829 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-25 22:01:06,830 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-10-25 22:01:06,859 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-25 22:01:06,860 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-25 22:01:06,861 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-25 22:01:06,862 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-25 22:01:06,862 INFO L138 SettingsManager]: * Use SBE=true [2020-10-25 22:01:06,863 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-25 22:01:06,863 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-25 22:01:06,863 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-25 22:01:06,864 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-25 22:01:06,864 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-25 22:01:06,864 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-25 22:01:06,864 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-25 22:01:06,865 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-10-25 22:01:06,865 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-10-25 22:01:06,865 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-25 22:01:06,866 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-25 22:01:06,866 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-25 22:01:06,866 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-25 22:01:06,867 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-25 22:01:06,867 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-25 22:01:06,867 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-25 22:01:06,868 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-25 22:01:06,868 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-25 22:01:06,868 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-25 22:01:06,869 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-25 22:01:06,869 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-25 22:01:06,869 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-10-25 22:01:06,869 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-10-25 22:01:06,870 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-25 22:01:06,870 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-25 22:01:06,870 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-25 22:01:06,870 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6a2ce6cad1ff26c462bd542dafb3ac3798055daa [2020-10-25 22:01:07,271 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-25 22:01:07,309 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-25 22:01:07,316 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-25 22:01:07,318 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-25 22:01:07,320 INFO L275 PluginConnector]: CDTParser initialized [2020-10-25 22:01:07,320 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/float_req_bl_1210.c [2020-10-25 22:01:07,399 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1b1dd7ce4/ee2fd97ca14747029eee436e62ceae01/FLAGb54de2465 [2020-10-25 22:01:08,179 INFO L306 CDTParser]: Found 1 translation units. [2020-10-25 22:01:08,180 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/float_req_bl_1210.c [2020-10-25 22:01:08,189 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1b1dd7ce4/ee2fd97ca14747029eee436e62ceae01/FLAGb54de2465 [2020-10-25 22:01:08,544 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1b1dd7ce4/ee2fd97ca14747029eee436e62ceae01 [2020-10-25 22:01:08,548 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-25 22:01:08,556 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-25 22:01:08,560 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-25 22:01:08,561 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-25 22:01:08,565 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-25 22:01:08,566 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 10:01:08" (1/1) ... [2020-10-25 22:01:08,572 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d2bc700 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:01:08, skipping insertion in model container [2020-10-25 22:01:08,572 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 10:01:08" (1/1) ... [2020-10-25 22:01:08,581 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-25 22:01:08,611 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-25 22:01:08,960 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-25 22:01:08,987 INFO L203 MainTranslator]: Completed pre-run [2020-10-25 22:01:09,054 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-25 22:01:09,084 INFO L208 MainTranslator]: Completed translation [2020-10-25 22:01:09,084 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:01:09 WrapperNode [2020-10-25 22:01:09,084 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-25 22:01:09,088 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-25 22:01:09,088 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-25 22:01:09,090 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-25 22:01:09,099 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:01:09" (1/1) ... [2020-10-25 22:01:09,134 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:01:09" (1/1) ... [2020-10-25 22:01:09,182 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-25 22:01:09,185 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-25 22:01:09,185 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-25 22:01:09,185 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-25 22:01:09,196 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:01:09" (1/1) ... [2020-10-25 22:01:09,196 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:01:09" (1/1) ... [2020-10-25 22:01:09,218 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:01:09" (1/1) ... [2020-10-25 22:01:09,218 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:01:09" (1/1) ... [2020-10-25 22:01:09,244 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:01:09" (1/1) ... [2020-10-25 22:01:09,254 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:01:09" (1/1) ... [2020-10-25 22:01:09,263 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:01:09" (1/1) ... [2020-10-25 22:01:09,269 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-25 22:01:09,270 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-25 22:01:09,271 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-25 22:01:09,271 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-25 22:01:09,272 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:01:09" (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 [2020-10-25 22:01:09,347 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-10-25 22:01:09,348 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-25 22:01:09,348 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2020-10-25 22:01:09,349 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-10-25 22:01:09,349 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-25 22:01:09,349 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-25 22:01:09,349 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2020-10-25 22:01:09,349 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2020-10-25 22:01:09,350 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-25 22:01:10,192 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-25 22:01:10,193 INFO L298 CfgBuilder]: Removed 26 assume(true) statements. [2020-10-25 22:01:10,194 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 10:01:10 BoogieIcfgContainer [2020-10-25 22:01:10,195 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-25 22:01:10,197 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-25 22:01:10,197 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-25 22:01:10,200 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-25 22:01:10,201 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.10 10:01:08" (1/3) ... [2020-10-25 22:01:10,202 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2171749f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 10:01:10, skipping insertion in model container [2020-10-25 22:01:10,202 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:01:09" (2/3) ... [2020-10-25 22:01:10,203 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2171749f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 10:01:10, skipping insertion in model container [2020-10-25 22:01:10,203 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 10:01:10" (3/3) ... [2020-10-25 22:01:10,205 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1210.c [2020-10-25 22:01:10,217 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-25 22:01:10,223 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-25 22:01:10,240 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-25 22:01:10,267 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-25 22:01:10,268 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-25 22:01:10,268 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-25 22:01:10,268 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-25 22:01:10,269 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-25 22:01:10,269 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-25 22:01:10,269 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-25 22:01:10,269 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-25 22:01:10,284 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states. [2020-10-25 22:01:10,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-25 22:01:10,290 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 22:01:10,291 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 22:01:10,291 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 22:01:10,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 22:01:10,298 INFO L82 PathProgramCache]: Analyzing trace with hash -556426464, now seen corresponding path program 1 times [2020-10-25 22:01:10,312 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-25 22:01:10,313 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1677166890] [2020-10-25 22:01:10,313 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 [2020-10-25 22:01:10,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 22:01:10,513 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 1 conjunts are in the unsatisfiable core [2020-10-25 22:01:10,519 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-25 22:01:10,551 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 22:01:10,551 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-25 22:01:10,557 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 22:01:10,558 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1677166890] [2020-10-25 22:01:10,558 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-25 22:01:10,559 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-10-25 22:01:10,560 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752431572] [2020-10-25 22:01:10,564 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-25 22:01:10,565 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-25 22:01:10,579 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-25 22:01:10,580 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-25 22:01:10,582 INFO L87 Difference]: Start difference. First operand 35 states. Second operand 2 states. [2020-10-25 22:01:10,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 22:01:10,604 INFO L93 Difference]: Finished difference Result 67 states and 103 transitions. [2020-10-25 22:01:10,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-25 22:01:10,606 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 13 [2020-10-25 22:01:10,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 22:01:10,616 INFO L225 Difference]: With dead ends: 67 [2020-10-25 22:01:10,616 INFO L226 Difference]: Without dead ends: 31 [2020-10-25 22:01:10,619 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-25 22:01:10,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-10-25 22:01:10,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2020-10-25 22:01:10,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-10-25 22:01:10,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 34 transitions. [2020-10-25 22:01:10,659 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 34 transitions. Word has length 13 [2020-10-25 22:01:10,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 22:01:10,659 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 34 transitions. [2020-10-25 22:01:10,660 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-25 22:01:10,660 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 34 transitions. [2020-10-25 22:01:10,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-25 22:01:10,661 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 22:01:10,661 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 22:01:10,875 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-10-25 22:01:10,875 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 22:01:10,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 22:01:10,877 INFO L82 PathProgramCache]: Analyzing trace with hash -56818241, now seen corresponding path program 1 times [2020-10-25 22:01:10,879 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-25 22:01:10,879 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1107611127] [2020-10-25 22:01:10,879 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 [2020-10-25 22:01:10,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 22:01:10,975 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-25 22:01:10,978 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-25 22:01:11,128 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 22:01:11,128 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-25 22:01:11,289 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 22:01:11,290 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1107611127] [2020-10-25 22:01:11,290 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-25 22:01:11,290 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2020-10-25 22:01:11,290 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767300605] [2020-10-25 22:01:11,292 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-25 22:01:11,292 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-25 22:01:11,293 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-25 22:01:11,294 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-25 22:01:11,294 INFO L87 Difference]: Start difference. First operand 31 states and 34 transitions. Second operand 8 states. [2020-10-25 22:01:11,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 22:01:11,698 INFO L93 Difference]: Finished difference Result 38 states and 41 transitions. [2020-10-25 22:01:11,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-25 22:01:11,699 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 15 [2020-10-25 22:01:11,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 22:01:11,700 INFO L225 Difference]: With dead ends: 38 [2020-10-25 22:01:11,700 INFO L226 Difference]: Without dead ends: 18 [2020-10-25 22:01:11,702 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-25 22:01:11,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2020-10-25 22:01:11,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2020-10-25 22:01:11,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-10-25 22:01:11,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2020-10-25 22:01:11,708 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 15 [2020-10-25 22:01:11,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 22:01:11,708 INFO L481 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2020-10-25 22:01:11,708 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-25 22:01:11,708 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2020-10-25 22:01:11,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-25 22:01:11,709 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 22:01:11,709 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 22:01:11,922 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-10-25 22:01:11,923 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 22:01:11,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 22:01:11,924 INFO L82 PathProgramCache]: Analyzing trace with hash 1951048762, now seen corresponding path program 1 times [2020-10-25 22:01:11,926 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-25 22:01:11,926 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [480698025] [2020-10-25 22:01:11,927 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 [2020-10-25 22:01:12,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 22:01:12,089 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-25 22:01:12,091 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-25 22:01:12,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 22:01:12,102 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-25 22:01:12,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 22:01:12,108 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [480698025] [2020-10-25 22:01:12,108 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-25 22:01:12,109 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2020-10-25 22:01:12,110 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713881756] [2020-10-25 22:01:12,110 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-25 22:01:12,111 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-25 22:01:12,113 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-25 22:01:12,114 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-25 22:01:12,114 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand 3 states. [2020-10-25 22:01:12,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 22:01:12,142 INFO L93 Difference]: Finished difference Result 21 states and 20 transitions. [2020-10-25 22:01:12,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-25 22:01:12,145 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2020-10-25 22:01:12,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 22:01:12,146 INFO L225 Difference]: With dead ends: 21 [2020-10-25 22:01:12,147 INFO L226 Difference]: Without dead ends: 18 [2020-10-25 22:01:12,147 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-25 22:01:12,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2020-10-25 22:01:12,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2020-10-25 22:01:12,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-10-25 22:01:12,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 17 transitions. [2020-10-25 22:01:12,154 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 17 transitions. Word has length 16 [2020-10-25 22:01:12,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 22:01:12,155 INFO L481 AbstractCegarLoop]: Abstraction has 18 states and 17 transitions. [2020-10-25 22:01:12,155 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-25 22:01:12,155 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 17 transitions. [2020-10-25 22:01:12,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-25 22:01:12,156 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 22:01:12,156 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 22:01:12,363 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-10-25 22:01:12,364 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 22:01:12,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 22:01:12,365 INFO L82 PathProgramCache]: Analyzing trace with hash 352844637, now seen corresponding path program 1 times [2020-10-25 22:01:12,366 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-25 22:01:12,366 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2026676244] [2020-10-25 22:01:12,367 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 [2020-10-25 22:01:12,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-25 22:01:12,631 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-25 22:01:12,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-25 22:01:12,833 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-25 22:01:12,895 INFO L173 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2020-10-25 22:01:12,895 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-25 22:01:13,096 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-10-25 22:01:13,142 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.10 10:01:13 BoogieIcfgContainer [2020-10-25 22:01:13,143 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-25 22:01:13,143 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-25 22:01:13,144 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-25 22:01:13,144 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-25 22:01:13,145 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 10:01:10" (3/4) ... [2020-10-25 22:01:13,147 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-10-25 22:01:13,219 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-25 22:01:13,220 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-25 22:01:13,222 INFO L168 Benchmark]: Toolchain (without parser) took 4671.17 ms. Allocated memory was 50.3 MB in the beginning and 75.5 MB in the end (delta: 25.2 MB). Free memory was 27.2 MB in the beginning and 56.5 MB in the end (delta: -29.3 MB). Peak memory consumption was 26.0 MB. Max. memory is 16.1 GB. [2020-10-25 22:01:13,223 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 50.3 MB. Free memory was 33.8 MB in the beginning and 33.7 MB in the end (delta: 73.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-25 22:01:13,224 INFO L168 Benchmark]: CACSL2BoogieTranslator took 525.81 ms. Allocated memory is still 50.3 MB. Free memory was 26.5 MB in the beginning and 28.3 MB in the end (delta: -1.8 MB). Peak memory consumption was 7.8 MB. Max. memory is 16.1 GB. [2020-10-25 22:01:13,225 INFO L168 Benchmark]: Boogie Procedure Inliner took 94.94 ms. Allocated memory is still 50.3 MB. Free memory was 28.2 MB in the beginning and 26.3 MB in the end (delta: 1.8 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-25 22:01:13,225 INFO L168 Benchmark]: Boogie Preprocessor took 84.77 ms. Allocated memory is still 50.3 MB. Free memory was 26.3 MB in the beginning and 24.4 MB in the end (delta: 1.9 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-10-25 22:01:13,226 INFO L168 Benchmark]: RCFGBuilder took 924.57 ms. Allocated memory was 50.3 MB in the beginning and 62.9 MB in the end (delta: 12.6 MB). Free memory was 24.4 MB in the beginning and 42.9 MB in the end (delta: -18.5 MB). Peak memory consumption was 12.5 MB. Max. memory is 16.1 GB. [2020-10-25 22:01:13,227 INFO L168 Benchmark]: TraceAbstraction took 2946.29 ms. Allocated memory was 62.9 MB in the beginning and 75.5 MB in the end (delta: 12.6 MB). Free memory was 42.3 MB in the beginning and 31.4 MB in the end (delta: 10.8 MB). Peak memory consumption was 24.2 MB. Max. memory is 16.1 GB. [2020-10-25 22:01:13,228 INFO L168 Benchmark]: Witness Printer took 76.46 ms. Allocated memory is still 75.5 MB. Free memory was 31.4 MB in the beginning and 56.5 MB in the end (delta: -25.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-25 22:01:13,232 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 50.3 MB. Free memory was 33.8 MB in the beginning and 33.7 MB in the end (delta: 73.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 525.81 ms. Allocated memory is still 50.3 MB. Free memory was 26.5 MB in the beginning and 28.3 MB in the end (delta: -1.8 MB). Peak memory consumption was 7.8 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 94.94 ms. Allocated memory is still 50.3 MB. Free memory was 28.2 MB in the beginning and 26.3 MB in the end (delta: 1.8 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 84.77 ms. Allocated memory is still 50.3 MB. Free memory was 26.3 MB in the beginning and 24.4 MB in the end (delta: 1.9 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 924.57 ms. Allocated memory was 50.3 MB in the beginning and 62.9 MB in the end (delta: 12.6 MB). Free memory was 24.4 MB in the beginning and 42.9 MB in the end (delta: -18.5 MB). Peak memory consumption was 12.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 2946.29 ms. Allocated memory was 62.9 MB in the beginning and 75.5 MB in the end (delta: 12.6 MB). Free memory was 42.3 MB in the beginning and 31.4 MB in the end (delta: 10.8 MB). Peak memory consumption was 24.2 MB. Max. memory is 16.1 GB. * Witness Printer took 76.46 ms. Allocated memory is still 75.5 MB. Free memory was 31.4 MB in the beginning and 56.5 MB in the end (delta: -25.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 3]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L13] static const float one_modf = 1.0; VAL [one_modf=1.0] [L82] float x = 0.0f / 0.0f; [L83] float iptr; [L16] __int32_t i0, j0; [L17] __uint32_t i; VAL [one_modf=1.0] [L19] ieee_float_shape_type gf_u; [L20] gf_u.value = (x) [L21] EXPR gf_u.word [L21] (i0) = gf_u.word [L23] j0 = ((i0 >> 23) & 0xff) - 0x7f VAL [one_modf=1.0] [L24] COND FALSE !(j0 < 23) [L58] __uint32_t ix; [L59] *iptr = x * one_modf VAL [one_modf=1.0] [L61] ieee_float_shape_type gf_u; [L62] gf_u.value = (x) [L63] EXPR gf_u.word [L63] (ix) = gf_u.word [L66] ieee_float_shape_type sf_u; [L67] sf_u.word = (ix & 0x80000000) [L68] EXPR sf_u.value [L68] (x) = sf_u.value [L70] return x; VAL [one_modf=1.0] [L84] float res = modf_float(x, &iptr); [L87] EXPR \read(iptr) [L75] return x != x; VAL [one_modf=1.0] [L87] isnan_float(iptr) && !isnan_float(res) [L75] return x != x; VAL [one_modf=1.0] [L87] isnan_float(iptr) && !isnan_float(res) VAL [one_modf=1.0] [L87] COND TRUE isnan_float(iptr) && !isnan_float(res) [L3] __assert_fail("0", "float_req_bl_1210.c", 3, "reach_error") VAL [one_modf=1.0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 35 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 2.8s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 69 SDtfs, 46 SDslu, 34 SDs, 0 SdLazy, 17 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 85 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=35occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 61 NumberOfCodeBlocks, 61 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 82 ConstructedInterpolants, 5 QuantifiedInterpolants, 2476 SizeOfPredicates, 8 NumberOfNonLiveVariables, 204 ConjunctsInSsa, 11 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...