./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/float-newlib/double_req_bl_1300.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/float-newlib/double_req_bl_1300.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 6775086e1d92d324fce714cac739cb50ade22067 ...................................................................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/float-newlib/double_req_bl_1300.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 6775086e1d92d324fce714cac739cb50ade22067 ......................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-10-24 23:17:25,167 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-24 23:17:25,170 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-24 23:17:25,208 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-24 23:17:25,209 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-24 23:17:25,210 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-24 23:17:25,212 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-24 23:17:25,215 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-24 23:17:25,218 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-24 23:17:25,219 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-24 23:17:25,220 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-24 23:17:25,222 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-24 23:17:25,223 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-24 23:17:25,224 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-24 23:17:25,226 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-24 23:17:25,228 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-24 23:17:25,229 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-24 23:17:25,230 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-24 23:17:25,233 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-24 23:17:25,235 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-24 23:17:25,238 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-24 23:17:25,247 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-24 23:17:25,249 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-24 23:17:25,250 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-24 23:17:25,255 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-24 23:17:25,256 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-24 23:17:25,256 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-24 23:17:25,258 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-24 23:17:25,258 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-24 23:17:25,260 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-24 23:17:25,260 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-24 23:17:25,261 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-24 23:17:25,262 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-24 23:17:25,263 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-24 23:17:25,264 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-24 23:17:25,265 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-24 23:17:25,266 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-24 23:17:25,266 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-24 23:17:25,267 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-24 23:17:25,268 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-24 23:17:25,269 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-24 23:17:25,270 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-24 23:17:25,306 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-24 23:17:25,307 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-24 23:17:25,308 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-24 23:17:25,309 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-24 23:17:25,309 INFO L138 SettingsManager]: * Use SBE=true [2020-10-24 23:17:25,309 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-24 23:17:25,310 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-24 23:17:25,310 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-24 23:17:25,310 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-24 23:17:25,311 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-24 23:17:25,311 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-24 23:17:25,311 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-24 23:17:25,311 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-24 23:17:25,312 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-24 23:17:25,312 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-24 23:17:25,312 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-24 23:17:25,312 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-24 23:17:25,313 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-24 23:17:25,313 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-24 23:17:25,313 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-24 23:17:25,313 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-24 23:17:25,314 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-24 23:17:25,314 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-24 23:17:25,314 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-24 23:17:25,314 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-24 23:17:25,315 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-24 23:17:25,315 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-24 23:17:25,315 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-24 23:17:25,316 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-24 23:17:25,316 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6775086e1d92d324fce714cac739cb50ade22067 [2020-10-24 23:17:25,699 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-24 23:17:25,730 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-24 23:17:25,733 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-24 23:17:25,734 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-24 23:17:25,735 INFO L275 PluginConnector]: CDTParser initialized [2020-10-24 23:17:25,737 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/double_req_bl_1300.c [2020-10-24 23:17:25,834 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/369b8b88b/4b856b07563348699759bd4a1bdbf96f/FLAG5764c5a29 [2020-10-24 23:17:26,442 INFO L306 CDTParser]: Found 1 translation units. [2020-10-24 23:17:26,443 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_1300.c [2020-10-24 23:17:26,451 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/369b8b88b/4b856b07563348699759bd4a1bdbf96f/FLAG5764c5a29 [2020-10-24 23:17:26,816 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/369b8b88b/4b856b07563348699759bd4a1bdbf96f [2020-10-24 23:17:26,819 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-24 23:17:26,827 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-24 23:17:26,833 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-24 23:17:26,833 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-24 23:17:26,837 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-24 23:17:26,838 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 11:17:26" (1/1) ... [2020-10-24 23:17:26,842 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ddaf855 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:17:26, skipping insertion in model container [2020-10-24 23:17:26,842 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 11:17:26" (1/1) ... [2020-10-24 23:17:26,851 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-24 23:17:26,868 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-24 23:17:27,051 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-24 23:17:27,061 INFO L203 MainTranslator]: Completed pre-run [2020-10-24 23:17:27,087 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-24 23:17:27,105 INFO L208 MainTranslator]: Completed translation [2020-10-24 23:17:27,106 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:17:27 WrapperNode [2020-10-24 23:17:27,106 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-24 23:17:27,107 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-24 23:17:27,107 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-24 23:17:27,108 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-24 23:17:27,116 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:17:27" (1/1) ... [2020-10-24 23:17:27,126 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:17:27" (1/1) ... [2020-10-24 23:17:27,160 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-24 23:17:27,161 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-24 23:17:27,162 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-24 23:17:27,162 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-24 23:17:27,171 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:17:27" (1/1) ... [2020-10-24 23:17:27,171 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:17:27" (1/1) ... [2020-10-24 23:17:27,174 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:17:27" (1/1) ... [2020-10-24 23:17:27,174 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:17:27" (1/1) ... [2020-10-24 23:17:27,182 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:17:27" (1/1) ... [2020-10-24 23:17:27,186 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:17:27" (1/1) ... [2020-10-24 23:17:27,188 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:17:27" (1/1) ... [2020-10-24 23:17:27,191 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-24 23:17:27,192 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-24 23:17:27,192 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-24 23:17:27,192 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-24 23:17:27,193 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:17:27" (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 [2020-10-24 23:17:27,268 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-24 23:17:27,269 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-24 23:17:27,269 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-24 23:17:27,269 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-24 23:17:27,270 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-24 23:17:27,270 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-24 23:17:27,270 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-24 23:17:27,808 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-24 23:17:27,808 INFO L298 CfgBuilder]: Removed 16 assume(true) statements. [2020-10-24 23:17:27,811 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 11:17:27 BoogieIcfgContainer [2020-10-24 23:17:27,811 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-24 23:17:27,815 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-24 23:17:27,815 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-24 23:17:27,819 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-24 23:17:27,819 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 11:17:26" (1/3) ... [2020-10-24 23:17:27,820 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53d96a93 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 11:17:27, skipping insertion in model container [2020-10-24 23:17:27,820 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:17:27" (2/3) ... [2020-10-24 23:17:27,821 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53d96a93 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 11:17:27, skipping insertion in model container [2020-10-24 23:17:27,821 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 11:17:27" (3/3) ... [2020-10-24 23:17:27,823 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1300.c [2020-10-24 23:17:27,838 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-24 23:17:27,845 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-24 23:17:27,861 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-24 23:17:27,912 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-24 23:17:27,912 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-24 23:17:27,912 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-24 23:17:27,913 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-24 23:17:27,913 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-24 23:17:27,913 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-24 23:17:27,913 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-24 23:17:27,914 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-24 23:17:27,932 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states. [2020-10-24 23:17:27,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-24 23:17:27,939 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 23:17:27,940 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 23:17:27,941 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 23:17:27,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 23:17:27,949 INFO L82 PathProgramCache]: Analyzing trace with hash 1033094394, now seen corresponding path program 1 times [2020-10-24 23:17:27,961 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-24 23:17:27,962 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271192489] [2020-10-24 23:17:27,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 23:17:28,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 23:17:28,115 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 23:17:28,116 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1271192489] [2020-10-24 23:17:28,117 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-24 23:17:28,117 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-24 23:17:28,118 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744802724] [2020-10-24 23:17:28,122 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-24 23:17:28,123 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-24 23:17:28,136 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-24 23:17:28,137 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-24 23:17:28,139 INFO L87 Difference]: Start difference. First operand 21 states. Second operand 2 states. [2020-10-24 23:17:28,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 23:17:28,163 INFO L93 Difference]: Finished difference Result 39 states and 51 transitions. [2020-10-24 23:17:28,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-24 23:17:28,164 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 12 [2020-10-24 23:17:28,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 23:17:28,177 INFO L225 Difference]: With dead ends: 39 [2020-10-24 23:17:28,177 INFO L226 Difference]: Without dead ends: 16 [2020-10-24 23:17:28,180 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 [2020-10-24 23:17:28,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2020-10-24 23:17:28,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2020-10-24 23:17:28,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-10-24 23:17:28,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2020-10-24 23:17:28,215 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 12 [2020-10-24 23:17:28,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 23:17:28,215 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2020-10-24 23:17:28,215 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-24 23:17:28,215 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2020-10-24 23:17:28,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-24 23:17:28,216 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 23:17:28,216 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 23:17:28,217 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-24 23:17:28,217 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 23:17:28,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 23:17:28,218 INFO L82 PathProgramCache]: Analyzing trace with hash 499625812, now seen corresponding path program 1 times [2020-10-24 23:17:28,218 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-24 23:17:28,218 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2002463752] [2020-10-24 23:17:28,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 23:17:28,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 23:17:28,386 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 23:17:28,386 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2002463752] [2020-10-24 23:17:28,387 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-24 23:17:28,390 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-24 23:17:28,391 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688416024] [2020-10-24 23:17:28,394 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-24 23:17:28,394 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-24 23:17:28,395 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-24 23:17:28,395 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-24 23:17:28,395 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand 3 states. [2020-10-24 23:17:28,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 23:17:28,416 INFO L93 Difference]: Finished difference Result 24 states and 23 transitions. [2020-10-24 23:17:28,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-24 23:17:28,417 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2020-10-24 23:17:28,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 23:17:28,417 INFO L225 Difference]: With dead ends: 24 [2020-10-24 23:17:28,418 INFO L226 Difference]: Without dead ends: 16 [2020-10-24 23:17:28,419 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 [2020-10-24 23:17:28,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2020-10-24 23:17:28,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2020-10-24 23:17:28,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-10-24 23:17:28,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 15 transitions. [2020-10-24 23:17:28,423 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 15 transitions. Word has length 14 [2020-10-24 23:17:28,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 23:17:28,424 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 15 transitions. [2020-10-24 23:17:28,424 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-24 23:17:28,424 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 15 transitions. [2020-10-24 23:17:28,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-24 23:17:28,425 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 23:17:28,425 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 23:17:28,426 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-24 23:17:28,426 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 23:17:28,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 23:17:28,427 INFO L82 PathProgramCache]: Analyzing trace with hash 2210040, now seen corresponding path program 1 times [2020-10-24 23:17:28,427 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-24 23:17:28,428 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76359529] [2020-10-24 23:17:28,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 23:17:28,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-24 23:17:28,540 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-24 23:17:28,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-24 23:17:28,672 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-24 23:17:28,704 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-24 23:17:28,705 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-24 23:17:28,705 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-24 23:17:28,750 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 11:17:28 BoogieIcfgContainer [2020-10-24 23:17:28,753 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-24 23:17:28,754 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-24 23:17:28,754 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-24 23:17:28,754 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-24 23:17:28,755 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 11:17:27" (3/4) ... [2020-10-24 23:17:28,759 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-24 23:17:28,759 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-24 23:17:28,764 INFO L168 Benchmark]: Toolchain (without parser) took 1939.41 ms. Allocated memory was 60.8 MB in the beginning and 75.5 MB in the end (delta: 14.7 MB). Free memory was 37.4 MB in the beginning and 52.3 MB in the end (delta: -14.8 MB). Peak memory consumption was 2.6 MB. Max. memory is 16.1 GB. [2020-10-24 23:17:28,767 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 44.0 MB. Free memory was 23.8 MB in the beginning and 23.7 MB in the end (delta: 70.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-24 23:17:28,769 INFO L168 Benchmark]: CACSL2BoogieTranslator took 273.74 ms. Allocated memory is still 60.8 MB. Free memory was 36.8 MB in the beginning and 42.2 MB in the end (delta: -5.4 MB). Peak memory consumption was 9.7 MB. Max. memory is 16.1 GB. [2020-10-24 23:17:28,771 INFO L168 Benchmark]: Boogie Procedure Inliner took 53.55 ms. Allocated memory is still 60.8 MB. Free memory was 42.0 MB in the beginning and 40.3 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-24 23:17:28,772 INFO L168 Benchmark]: Boogie Preprocessor took 29.51 ms. Allocated memory is still 60.8 MB. Free memory was 40.3 MB in the beginning and 39.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-24 23:17:28,780 INFO L168 Benchmark]: RCFGBuilder took 619.72 ms. Allocated memory is still 60.8 MB. Free memory was 39.0 MB in the beginning and 38.1 MB in the end (delta: 944.2 kB). Peak memory consumption was 11.9 MB. Max. memory is 16.1 GB. [2020-10-24 23:17:28,784 INFO L168 Benchmark]: TraceAbstraction took 937.96 ms. Allocated memory was 60.8 MB in the beginning and 75.5 MB in the end (delta: 14.7 MB). Free memory was 37.6 MB in the beginning and 52.7 MB in the end (delta: -15.2 MB). Peak memory consumption was 16.6 MB. Max. memory is 16.1 GB. [2020-10-24 23:17:28,788 INFO L168 Benchmark]: Witness Printer took 5.93 ms. Allocated memory is still 75.5 MB. Free memory was 52.7 MB in the beginning and 52.3 MB in the end (delta: 439.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-24 23:17:28,797 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 44.0 MB. Free memory was 23.8 MB in the beginning and 23.7 MB in the end (delta: 70.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 273.74 ms. Allocated memory is still 60.8 MB. Free memory was 36.8 MB in the beginning and 42.2 MB in the end (delta: -5.4 MB). Peak memory consumption was 9.7 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 53.55 ms. Allocated memory is still 60.8 MB. Free memory was 42.0 MB in the beginning and 40.3 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 29.51 ms. Allocated memory is still 60.8 MB. Free memory was 40.3 MB in the beginning and 39.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 619.72 ms. Allocated memory is still 60.8 MB. Free memory was 39.0 MB in the beginning and 38.1 MB in the end (delta: 944.2 kB). Peak memory consumption was 11.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 937.96 ms. Allocated memory was 60.8 MB in the beginning and 75.5 MB in the end (delta: 14.7 MB). Free memory was 37.6 MB in the beginning and 52.7 MB in the end (delta: -15.2 MB). Peak memory consumption was 16.6 MB. Max. memory is 16.1 GB. * Witness Printer took 5.93 ms. Allocated memory is still 75.5 MB. Free memory was 52.7 MB in the beginning and 52.3 MB in the end (delta: 439.7 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 bitwiseOr at line 27, overapproximation of bitwiseAnd at line 42, overapproximation of someBinaryDOUBLEComparisonOperation at line 60, overapproximation of to_real at line 57. Possible FailurePath: [L52] double x = __VERIFIER_nondet_double(); [L19] __int32_t hx, lx; [L21] ieee_double_shape_type ew_u; [L22] ew_u.value = (x) [L23] EXPR ew_u.parts.msw [L23] (hx) = ew_u.parts.msw [L24] EXPR ew_u.parts.lsw [L24] (lx) = ew_u.parts.lsw [L26] hx &= 0x7fffffff [L27] hx |= (__uint32_t)(lx | (-lx)) >> 31 [L28] hx = 0x7ff00000 - hx [L29] return 1 - (int)((__uint32_t)(hx | (-hx)) >> 31); [L55] !isinf_double(x) && !isnan_double(x) [L33] return x != x; [L55] !isinf_double(x) && !isnan_double(x) [L55] COND TRUE !isinf_double(x) && !isnan_double(x) [L36] __int32_t hx; [L38] ieee_double_shape_type gh_u; [L39] gh_u.value = (x) [L40] EXPR gh_u.parts.msw [L40] (hx) = gh_u.parts.msw [L42] return (int)((__uint32_t)((hx & 0x7fffffff) - 0x7ff00000) >> 31); [L57] double res = isfinite_double(x); [L60] COND TRUE res == 0.0 [L3] __assert_fail("0", "double_req_bl_1300.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 21 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.7s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 37 SDtfs, 0 SDslu, 10 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=21occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 41 NumberOfCodeBlocks, 41 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 24 ConstructedInterpolants, 0 QuantifiedInterpolants, 303 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.0-a4ecdab [2020-10-24 23:17:31,587 INFO L177 SettingsManager]: Resetting all preferences to default values... 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[2020-10-24 23:17:31,690 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-24 23:17:31,691 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-24 23:17:31,692 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-24 23:17:31,693 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-24 23:17:31,694 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-24 23:17:31,695 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-24 23:17:31,696 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-24 23:17:31,696 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-24 23:17:31,696 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-24 23:17:31,698 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-24 23:17:31,699 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-24 23:17:31,700 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-10-24 23:17:31,753 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-24 23:17:31,753 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-24 23:17:31,759 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-24 23:17:31,761 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-24 23:17:31,761 INFO L138 SettingsManager]: * Use SBE=true [2020-10-24 23:17:31,762 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-24 23:17:31,762 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-24 23:17:31,762 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-24 23:17:31,762 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-24 23:17:31,763 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-24 23:17:31,763 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-24 23:17:31,764 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-24 23:17:31,765 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-10-24 23:17:31,765 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-10-24 23:17:31,765 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-24 23:17:31,765 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-24 23:17:31,765 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-24 23:17:31,766 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-24 23:17:31,766 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-24 23:17:31,766 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-24 23:17:31,766 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-24 23:17:31,767 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-24 23:17:31,767 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-24 23:17:31,768 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-24 23:17:31,768 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-24 23:17:31,768 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-24 23:17:31,768 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-10-24 23:17:31,768 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-10-24 23:17:31,768 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-24 23:17:31,769 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-24 23:17:31,769 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-24 23:17:31,769 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6775086e1d92d324fce714cac739cb50ade22067 [2020-10-24 23:17:32,210 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-24 23:17:32,262 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-24 23:17:32,267 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-24 23:17:32,268 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-24 23:17:32,269 INFO L275 PluginConnector]: CDTParser initialized [2020-10-24 23:17:32,270 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/double_req_bl_1300.c [2020-10-24 23:17:32,366 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/248c72d65/fd52c1984d8c4a58bf4d49a3eb03dd8f/FLAG4557d76a6 [2020-10-24 23:17:33,026 INFO L306 CDTParser]: Found 1 translation units. [2020-10-24 23:17:33,027 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_1300.c [2020-10-24 23:17:33,035 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/248c72d65/fd52c1984d8c4a58bf4d49a3eb03dd8f/FLAG4557d76a6 [2020-10-24 23:17:33,375 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/248c72d65/fd52c1984d8c4a58bf4d49a3eb03dd8f [2020-10-24 23:17:33,382 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-24 23:17:33,391 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-24 23:17:33,393 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-24 23:17:33,394 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-24 23:17:33,398 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-24 23:17:33,400 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 11:17:33" (1/1) ... [2020-10-24 23:17:33,405 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a7d703 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:17:33, skipping insertion in model container [2020-10-24 23:17:33,406 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 11:17:33" (1/1) ... [2020-10-24 23:17:33,415 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-24 23:17:33,435 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-24 23:17:33,681 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-24 23:17:33,707 INFO L203 MainTranslator]: Completed pre-run [2020-10-24 23:17:33,760 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-24 23:17:33,790 INFO L208 MainTranslator]: Completed translation [2020-10-24 23:17:33,790 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:17:33 WrapperNode [2020-10-24 23:17:33,790 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-24 23:17:33,792 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-24 23:17:33,792 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-24 23:17:33,792 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-24 23:17:33,801 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:17:33" (1/1) ... [2020-10-24 23:17:33,813 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:17:33" (1/1) ... [2020-10-24 23:17:33,839 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-24 23:17:33,840 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-24 23:17:33,840 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-24 23:17:33,846 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-24 23:17:33,857 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:17:33" (1/1) ... [2020-10-24 23:17:33,857 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:17:33" (1/1) ... [2020-10-24 23:17:33,861 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:17:33" (1/1) ... [2020-10-24 23:17:33,861 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:17:33" (1/1) ... [2020-10-24 23:17:33,871 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:17:33" (1/1) ... [2020-10-24 23:17:33,876 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:17:33" (1/1) ... [2020-10-24 23:17:33,880 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:17:33" (1/1) ... [2020-10-24 23:17:33,889 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-24 23:17:33,893 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-24 23:17:33,893 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-24 23:17:33,893 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-24 23:17:33,895 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:17:33" (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 [2020-10-24 23:17:33,998 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2020-10-24 23:17:33,999 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-10-24 23:17:33,999 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-24 23:17:33,999 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-10-24 23:17:33,999 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-24 23:17:34,000 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-24 23:17:34,000 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-24 23:17:34,516 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-24 23:17:34,516 INFO L298 CfgBuilder]: Removed 16 assume(true) statements. [2020-10-24 23:17:34,518 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 11:17:34 BoogieIcfgContainer [2020-10-24 23:17:34,518 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-24 23:17:34,519 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-24 23:17:34,519 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-24 23:17:34,523 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-24 23:17:34,523 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 11:17:33" (1/3) ... [2020-10-24 23:17:34,524 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32e9a756 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 11:17:34, skipping insertion in model container [2020-10-24 23:17:34,524 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:17:33" (2/3) ... [2020-10-24 23:17:34,525 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32e9a756 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 11:17:34, skipping insertion in model container [2020-10-24 23:17:34,525 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 11:17:34" (3/3) ... [2020-10-24 23:17:34,527 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1300.c [2020-10-24 23:17:34,540 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-24 23:17:34,546 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-24 23:17:34,560 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-24 23:17:34,588 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-24 23:17:34,588 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-24 23:17:34,588 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-24 23:17:34,588 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-24 23:17:34,588 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-24 23:17:34,589 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-24 23:17:34,589 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-24 23:17:34,589 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-24 23:17:34,603 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states. [2020-10-24 23:17:34,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-24 23:17:34,609 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 23:17:34,610 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 23:17:34,610 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 23:17:34,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 23:17:34,617 INFO L82 PathProgramCache]: Analyzing trace with hash 1033094394, now seen corresponding path program 1 times [2020-10-24 23:17:34,636 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-24 23:17:34,637 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [365436417] [2020-10-24 23:17:34,637 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 [2020-10-24 23:17:34,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 23:17:34,782 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 1 conjunts are in the unsatisfiable core [2020-10-24 23:17:34,787 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-24 23:17:34,802 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 23:17:34,802 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-24 23:17:34,807 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 23:17:34,807 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [365436417] [2020-10-24 23:17:34,808 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-24 23:17:34,808 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-10-24 23:17:34,809 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511366663] [2020-10-24 23:17:34,814 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-24 23:17:34,814 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-24 23:17:34,828 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-24 23:17:34,829 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-24 23:17:34,831 INFO L87 Difference]: Start difference. First operand 21 states. Second operand 2 states. [2020-10-24 23:17:34,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 23:17:34,848 INFO L93 Difference]: Finished difference Result 39 states and 51 transitions. [2020-10-24 23:17:34,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-24 23:17:34,850 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 12 [2020-10-24 23:17:34,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 23:17:34,858 INFO L225 Difference]: With dead ends: 39 [2020-10-24 23:17:34,858 INFO L226 Difference]: Without dead ends: 16 [2020-10-24 23:17:34,861 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-24 23:17:34,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2020-10-24 23:17:34,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2020-10-24 23:17:34,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-10-24 23:17:34,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2020-10-24 23:17:34,891 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 12 [2020-10-24 23:17:34,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 23:17:34,891 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2020-10-24 23:17:34,891 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-24 23:17:34,892 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2020-10-24 23:17:34,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-24 23:17:34,892 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 23:17:34,892 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 23:17:35,105 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-10-24 23:17:35,108 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 23:17:35,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 23:17:35,110 INFO L82 PathProgramCache]: Analyzing trace with hash 499625812, now seen corresponding path program 1 times [2020-10-24 23:17:35,112 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-24 23:17:35,112 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1068687401] [2020-10-24 23:17:35,114 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 [2020-10-24 23:17:35,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 23:17:35,248 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-24 23:17:35,250 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-24 23:17:35,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 23:17:35,266 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-24 23:17:35,270 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 23:17:35,270 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1068687401] [2020-10-24 23:17:35,270 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-24 23:17:35,271 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2020-10-24 23:17:35,271 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142076721] [2020-10-24 23:17:35,273 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-24 23:17:35,273 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-24 23:17:35,274 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-24 23:17:35,274 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-24 23:17:35,275 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand 3 states. [2020-10-24 23:17:35,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 23:17:35,295 INFO L93 Difference]: Finished difference Result 24 states and 23 transitions. [2020-10-24 23:17:35,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-24 23:17:35,296 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2020-10-24 23:17:35,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 23:17:35,296 INFO L225 Difference]: With dead ends: 24 [2020-10-24 23:17:35,297 INFO L226 Difference]: Without dead ends: 16 [2020-10-24 23:17:35,298 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-24 23:17:35,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2020-10-24 23:17:35,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2020-10-24 23:17:35,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-10-24 23:17:35,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 15 transitions. [2020-10-24 23:17:35,302 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 15 transitions. Word has length 14 [2020-10-24 23:17:35,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 23:17:35,302 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 15 transitions. [2020-10-24 23:17:35,302 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-24 23:17:35,303 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 15 transitions. [2020-10-24 23:17:35,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-24 23:17:35,303 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 23:17:35,304 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 23:17:35,504 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-10-24 23:17:35,505 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 23:17:35,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 23:17:35,507 INFO L82 PathProgramCache]: Analyzing trace with hash 2210040, now seen corresponding path program 1 times [2020-10-24 23:17:35,509 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-24 23:17:35,509 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1492044476] [2020-10-24 23:17:35,509 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 [2020-10-24 23:17:35,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-24 23:17:35,721 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-24 23:17:35,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-24 23:17:35,834 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-24 23:17:35,909 INFO L173 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2020-10-24 23:17:35,909 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-24 23:17:36,115 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-10-24 23:17:36,162 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 11:17:36 BoogieIcfgContainer [2020-10-24 23:17:36,162 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-24 23:17:36,163 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-24 23:17:36,170 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-24 23:17:36,170 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-24 23:17:36,171 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 11:17:34" (3/4) ... [2020-10-24 23:17:36,174 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-10-24 23:17:36,253 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-24 23:17:36,253 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-24 23:17:36,255 INFO L168 Benchmark]: Toolchain (without parser) took 2869.66 ms. Allocated memory was 52.4 MB in the beginning and 62.9 MB in the end (delta: 10.5 MB). Free memory was 37.2 MB in the beginning and 41.8 MB in the end (delta: -4.6 MB). Peak memory consumption was 7.3 MB. Max. memory is 16.1 GB. [2020-10-24 23:17:36,256 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 37.7 MB. Free memory was 18.3 MB in the beginning and 18.3 MB in the end (delta: 56.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-24 23:17:36,257 INFO L168 Benchmark]: CACSL2BoogieTranslator took 397.37 ms. Allocated memory is still 52.4 MB. Free memory was 36.6 MB in the beginning and 26.0 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-10-24 23:17:36,257 INFO L168 Benchmark]: Boogie Procedure Inliner took 47.42 ms. Allocated memory is still 52.4 MB. Free memory was 26.0 MB in the beginning and 24.4 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-24 23:17:36,258 INFO L168 Benchmark]: Boogie Preprocessor took 49.28 ms. Allocated memory is still 52.4 MB. Free memory was 24.4 MB in the beginning and 36.5 MB in the end (delta: -12.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 16.1 GB. [2020-10-24 23:17:36,259 INFO L168 Benchmark]: RCFGBuilder took 624.84 ms. Allocated memory is still 52.4 MB. Free memory was 36.5 MB in the beginning and 33.9 MB in the end (delta: 2.6 MB). Peak memory consumption was 15.7 MB. Max. memory is 16.1 GB. [2020-10-24 23:17:36,260 INFO L168 Benchmark]: TraceAbstraction took 1643.18 ms. Allocated memory was 52.4 MB in the beginning and 62.9 MB in the end (delta: 10.5 MB). Free memory was 33.5 MB in the beginning and 43.9 MB in the end (delta: -10.4 MB). Peak memory consumption was 17.9 MB. Max. memory is 16.1 GB. [2020-10-24 23:17:36,260 INFO L168 Benchmark]: Witness Printer took 89.64 ms. Allocated memory is still 62.9 MB. Free memory was 43.9 MB in the beginning and 41.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-24 23:17:36,265 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 37.7 MB. Free memory was 18.3 MB in the beginning and 18.3 MB in the end (delta: 56.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 397.37 ms. Allocated memory is still 52.4 MB. Free memory was 36.6 MB in the beginning and 26.0 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 47.42 ms. Allocated memory is still 52.4 MB. Free memory was 26.0 MB in the beginning and 24.4 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 49.28 ms. Allocated memory is still 52.4 MB. Free memory was 24.4 MB in the beginning and 36.5 MB in the end (delta: -12.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 624.84 ms. Allocated memory is still 52.4 MB. Free memory was 36.5 MB in the beginning and 33.9 MB in the end (delta: 2.6 MB). Peak memory consumption was 15.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1643.18 ms. Allocated memory was 52.4 MB in the beginning and 62.9 MB in the end (delta: 10.5 MB). Free memory was 33.5 MB in the beginning and 43.9 MB in the end (delta: -10.4 MB). Peak memory consumption was 17.9 MB. Max. memory is 16.1 GB. * Witness Printer took 89.64 ms. Allocated memory is still 62.9 MB. Free memory was 43.9 MB in the beginning and 41.8 MB in the end (delta: 2.1 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: [L52] double x = __VERIFIER_nondet_double(); [L19] __int32_t hx, lx; [L21] ieee_double_shape_type ew_u; [L22] ew_u.value = (x) [L23] EXPR ew_u.parts.msw [L23] (hx) = ew_u.parts.msw [L24] EXPR ew_u.parts.lsw [L24] (lx) = ew_u.parts.lsw [L26] hx &= 0x7fffffff [L27] hx |= (__uint32_t)(lx | (-lx)) >> 31 [L28] hx = 0x7ff00000 - hx [L29] return 1 - (int)((__uint32_t)(hx | (-hx)) >> 31); [L55] !isinf_double(x) && !isnan_double(x) [L33] return x != x; [L55] !isinf_double(x) && !isnan_double(x) [L55] COND TRUE !isinf_double(x) && !isnan_double(x) [L36] __int32_t hx; [L38] ieee_double_shape_type gh_u; [L39] gh_u.value = (x) [L40] EXPR gh_u.parts.msw [L40] (hx) = gh_u.parts.msw [L42] return (int)((__uint32_t)((hx & 0x7fffffff) - 0x7ff00000) >> 31); [L57] double res = isfinite_double(x); [L60] COND TRUE res == 0.0 [L3] __assert_fail("0", "double_req_bl_1300.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 21 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.5s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 37 SDtfs, 0 SDslu, 10 SDs, 0 SdLazy, 5 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 48 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=21occurred 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, 0.2s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 41 NumberOfCodeBlocks, 41 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 48 ConstructedInterpolants, 0 QuantifiedInterpolants, 606 SizeOfPredicates, 0 NumberOfNonLiveVariables, 101 ConjunctsInSsa, 3 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 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...