./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/float-newlib/double_req_bl_0682b.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 20ed64ec 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_0682b.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 37fbf0da8e0b6ff3b926d9957e6bddb594e87706 ........................................................................................................................................................................................................................................................................................................................................................................................................... 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_0682b.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 37fbf0da8e0b6ff3b926d9957e6bddb594e87706 ...................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN --- Real Ultimate output --- This is Ultimate 0.2.1-dev-20ed64e [2021-08-26 01:31:33,435 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-26 01:31:33,438 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-26 01:31:33,478 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-26 01:31:33,479 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-26 01:31:33,482 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-26 01:31:33,484 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-26 01:31:33,488 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-26 01:31:33,491 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-26 01:31:33,495 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-26 01:31:33,496 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-26 01:31:33,500 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-26 01:31:33,500 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-26 01:31:33,502 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-26 01:31:33,504 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-26 01:31:33,507 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-26 01:31:33,507 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-26 01:31:33,511 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-26 01:31:33,513 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-26 01:31:33,518 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-26 01:31:33,519 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-26 01:31:33,520 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-26 01:31:33,521 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-26 01:31:33,523 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-26 01:31:33,528 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-26 01:31:33,529 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-26 01:31:33,529 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-26 01:31:33,531 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-26 01:31:33,531 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-26 01:31:33,532 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-26 01:31:33,532 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-26 01:31:33,533 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-26 01:31:33,534 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-26 01:31:33,535 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-26 01:31:33,536 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-26 01:31:33,536 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-26 01:31:33,537 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-26 01:31:33,537 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-26 01:31:33,537 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-26 01:31:33,538 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-26 01:31:33,539 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-26 01:31:33,543 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-08-26 01:31:33,570 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-26 01:31:33,570 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-26 01:31:33,571 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-26 01:31:33,571 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-26 01:31:33,573 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-26 01:31:33,574 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-26 01:31:33,574 INFO L138 SettingsManager]: * Use SBE=true [2021-08-26 01:31:33,574 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-26 01:31:33,574 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-26 01:31:33,574 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-26 01:31:33,574 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-26 01:31:33,574 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-26 01:31:33,575 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-26 01:31:33,575 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-26 01:31:33,575 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-26 01:31:33,575 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-26 01:31:33,575 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-26 01:31:33,575 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-26 01:31:33,575 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-26 01:31:33,576 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-26 01:31:33,576 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-26 01:31:33,576 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-26 01:31:33,586 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-26 01:31:33,586 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-26 01:31:33,587 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-26 01:31:33,587 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-26 01:31:33,587 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-26 01:31:33,587 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-26 01:31:33,587 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-26 01:31:33,588 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-26 01:31:33,588 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 37fbf0da8e0b6ff3b926d9957e6bddb594e87706 [2021-08-26 01:31:33,911 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-26 01:31:33,939 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-26 01:31:33,942 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-26 01:31:33,943 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-26 01:31:33,944 INFO L275 PluginConnector]: CDTParser initialized [2021-08-26 01:31:33,945 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/double_req_bl_0682b.c [2021-08-26 01:31:34,018 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/824c0ddfb/9b2d6a1aefe54a53aa4eabc5eeabf31c/FLAG07fddf950 [2021-08-26 01:31:34,510 INFO L306 CDTParser]: Found 1 translation units. [2021-08-26 01:31:34,511 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_0682b.c [2021-08-26 01:31:34,532 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/824c0ddfb/9b2d6a1aefe54a53aa4eabc5eeabf31c/FLAG07fddf950 [2021-08-26 01:31:34,876 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/824c0ddfb/9b2d6a1aefe54a53aa4eabc5eeabf31c [2021-08-26 01:31:34,879 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-26 01:31:34,881 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-26 01:31:34,885 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-26 01:31:34,885 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-26 01:31:34,889 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-26 01:31:34,889 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 01:31:34" (1/1) ... [2021-08-26 01:31:34,890 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3db9fece and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 01:31:34, skipping insertion in model container [2021-08-26 01:31:34,891 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 01:31:34" (1/1) ... [2021-08-26 01:31:34,897 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-26 01:31:34,933 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-26 01:31:35,188 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_0682b.c[6873,6886] [2021-08-26 01:31:35,191 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-26 01:31:35,198 INFO L203 MainTranslator]: Completed pre-run [2021-08-26 01:31:35,238 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_0682b.c[6873,6886] [2021-08-26 01:31:35,239 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-26 01:31:35,253 INFO L208 MainTranslator]: Completed translation [2021-08-26 01:31:35,253 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 01:31:35 WrapperNode [2021-08-26 01:31:35,254 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-26 01:31:35,255 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-26 01:31:35,255 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-26 01:31:35,255 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-26 01:31:35,261 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 01:31:35" (1/1) ... [2021-08-26 01:31:35,272 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 01:31:35" (1/1) ... [2021-08-26 01:31:35,321 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-26 01:31:35,323 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-26 01:31:35,323 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-26 01:31:35,323 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-26 01:31:35,331 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 01:31:35" (1/1) ... [2021-08-26 01:31:35,331 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 01:31:35" (1/1) ... [2021-08-26 01:31:35,350 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 01:31:35" (1/1) ... [2021-08-26 01:31:35,351 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 01:31:35" (1/1) ... [2021-08-26 01:31:35,366 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 01:31:35" (1/1) ... [2021-08-26 01:31:35,374 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 01:31:35" (1/1) ... [2021-08-26 01:31:35,377 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 01:31:35" (1/1) ... [2021-08-26 01:31:35,382 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-26 01:31:35,383 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-26 01:31:35,383 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-26 01:31:35,383 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-26 01:31:35,384 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 01:31:35" (1/1) ... [2021-08-26 01:31:35,389 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-26 01:31:35,396 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 01:31:35,406 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-08-26 01:31:35,444 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-08-26 01:31:35,466 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-26 01:31:35,466 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-26 01:31:35,468 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-08-26 01:31:35,468 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-08-26 01:31:35,468 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-08-26 01:31:35,468 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-26 01:31:35,469 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-26 01:31:35,469 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-08-26 01:31:35,469 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2021-08-26 01:31:35,469 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-08-26 01:31:36,305 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-26 01:31:36,305 INFO L299 CfgBuilder]: Removed 52 assume(true) statements. [2021-08-26 01:31:36,307 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 01:31:36 BoogieIcfgContainer [2021-08-26 01:31:36,315 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-26 01:31:36,317 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-26 01:31:36,317 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-26 01:31:36,320 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-26 01:31:36,320 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.08 01:31:34" (1/3) ... [2021-08-26 01:31:36,321 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@dd1334a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 01:31:36, skipping insertion in model container [2021-08-26 01:31:36,321 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 01:31:35" (2/3) ... [2021-08-26 01:31:36,321 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@dd1334a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 01:31:36, skipping insertion in model container [2021-08-26 01:31:36,322 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 01:31:36" (3/3) ... [2021-08-26 01:31:36,323 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_0682b.c [2021-08-26 01:31:36,327 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-26 01:31:36,328 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-08-26 01:31:36,367 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-26 01:31:36,373 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-08-26 01:31:36,373 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-08-26 01:31:36,388 INFO L276 IsEmpty]: Start isEmpty. Operand has 124 states, 122 states have (on average 1.6967213114754098) internal successors, (207), 123 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 01:31:36,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-08-26 01:31:36,392 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 01:31:36,393 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 01:31:36,394 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-26 01:31:36,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 01:31:36,399 INFO L82 PathProgramCache]: Analyzing trace with hash -617567418, now seen corresponding path program 1 times [2021-08-26 01:31:36,407 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 01:31:36,408 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1402855108] [2021-08-26 01:31:36,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 01:31:36,409 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 01:31:36,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 01:31:36,548 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 01:31:36,549 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 01:31:36,549 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1402855108] [2021-08-26 01:31:36,550 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1402855108] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 01:31:36,550 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 01:31:36,550 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-26 01:31:36,552 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064692837] [2021-08-26 01:31:36,557 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-08-26 01:31:36,557 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 01:31:36,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-08-26 01:31:36,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-08-26 01:31:36,574 INFO L87 Difference]: Start difference. First operand has 124 states, 122 states have (on average 1.6967213114754098) internal successors, (207), 123 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 01:31:36,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 01:31:36,614 INFO L93 Difference]: Finished difference Result 246 states and 412 transitions. [2021-08-26 01:31:36,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-08-26 01:31:36,615 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-08-26 01:31:36,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 01:31:36,625 INFO L225 Difference]: With dead ends: 246 [2021-08-26 01:31:36,625 INFO L226 Difference]: Without dead ends: 120 [2021-08-26 01:31:36,629 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-08-26 01:31:36,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2021-08-26 01:31:36,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 120. [2021-08-26 01:31:36,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 119 states have (on average 1.4201680672268908) internal successors, (169), 119 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 01:31:36,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 169 transitions. [2021-08-26 01:31:36,683 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 169 transitions. Word has length 15 [2021-08-26 01:31:36,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 01:31:36,684 INFO L470 AbstractCegarLoop]: Abstraction has 120 states and 169 transitions. [2021-08-26 01:31:36,684 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 01:31:36,684 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 169 transitions. [2021-08-26 01:31:36,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-08-26 01:31:36,687 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 01:31:36,687 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 01:31:36,687 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-26 01:31:36,687 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-26 01:31:36,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 01:31:36,690 INFO L82 PathProgramCache]: Analyzing trace with hash -397782484, now seen corresponding path program 1 times [2021-08-26 01:31:36,691 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 01:31:36,691 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [669558113] [2021-08-26 01:31:36,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 01:31:36,691 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 01:31:36,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 01:31:36,833 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 01:31:36,833 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 01:31:36,834 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [669558113] [2021-08-26 01:31:36,834 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [669558113] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 01:31:36,834 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 01:31:36,834 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-26 01:31:36,834 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906285523] [2021-08-26 01:31:36,836 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-26 01:31:36,836 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 01:31:36,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-26 01:31:36,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-26 01:31:36,838 INFO L87 Difference]: Start difference. First operand 120 states and 169 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 01:31:36,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 01:31:36,862 INFO L93 Difference]: Finished difference Result 229 states and 326 transitions. [2021-08-26 01:31:36,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-26 01:31:36,863 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-08-26 01:31:36,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 01:31:36,864 INFO L225 Difference]: With dead ends: 229 [2021-08-26 01:31:36,864 INFO L226 Difference]: Without dead ends: 120 [2021-08-26 01:31:36,865 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.9ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-26 01:31:36,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2021-08-26 01:31:36,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 120. [2021-08-26 01:31:36,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 119 states have (on average 1.411764705882353) internal successors, (168), 119 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 01:31:36,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 168 transitions. [2021-08-26 01:31:36,872 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 168 transitions. Word has length 18 [2021-08-26 01:31:36,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 01:31:36,872 INFO L470 AbstractCegarLoop]: Abstraction has 120 states and 168 transitions. [2021-08-26 01:31:36,872 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 01:31:36,873 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 168 transitions. [2021-08-26 01:31:36,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-08-26 01:31:36,873 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 01:31:36,873 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 01:31:36,874 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-26 01:31:36,874 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-26 01:31:36,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 01:31:36,874 INFO L82 PathProgramCache]: Analyzing trace with hash -1006577033, now seen corresponding path program 1 times [2021-08-26 01:31:36,874 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 01:31:36,875 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2034074596] [2021-08-26 01:31:36,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 01:31:36,877 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 01:31:37,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-26 01:31:37,068 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-26 01:31:37,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-26 01:31:37,208 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-26 01:31:37,209 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-08-26 01:31:37,210 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 01:31:37,211 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-08-26 01:31:37,216 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-26 01:31:37,252 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.08 01:31:37 BoogieIcfgContainer [2021-08-26 01:31:37,253 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-26 01:31:37,253 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-26 01:31:37,254 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-26 01:31:37,254 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-26 01:31:37,254 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 01:31:36" (3/4) ... [2021-08-26 01:31:37,257 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-08-26 01:31:37,257 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-26 01:31:37,259 INFO L168 Benchmark]: Toolchain (without parser) took 2377.19 ms. Allocated memory was 52.4 MB in the beginning and 79.7 MB in the end (delta: 27.3 MB). Free memory was 29.3 MB in the beginning and 37.7 MB in the end (delta: -8.4 MB). Peak memory consumption was 17.9 MB. Max. memory is 16.1 GB. [2021-08-26 01:31:37,259 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 52.4 MB. Free memory was 34.9 MB in the beginning and 34.9 MB in the end (delta: 38.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-26 01:31:37,260 INFO L168 Benchmark]: CACSL2BoogieTranslator took 369.04 ms. Allocated memory was 52.4 MB in the beginning and 65.0 MB in the end (delta: 12.6 MB). Free memory was 29.1 MB in the beginning and 42.9 MB in the end (delta: -13.9 MB). Peak memory consumption was 7.2 MB. Max. memory is 16.1 GB. [2021-08-26 01:31:37,261 INFO L168 Benchmark]: Boogie Procedure Inliner took 66.86 ms. Allocated memory is still 65.0 MB. Free memory was 42.9 MB in the beginning and 39.2 MB in the end (delta: 3.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-08-26 01:31:37,261 INFO L168 Benchmark]: Boogie Preprocessor took 59.22 ms. Allocated memory is still 65.0 MB. Free memory was 39.2 MB in the beginning and 35.9 MB in the end (delta: 3.3 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-08-26 01:31:37,262 INFO L168 Benchmark]: RCFGBuilder took 932.63 ms. Allocated memory was 65.0 MB in the beginning and 79.7 MB in the end (delta: 14.7 MB). Free memory was 35.9 MB in the beginning and 59.6 MB in the end (delta: -23.8 MB). Peak memory consumption was 12.7 MB. Max. memory is 16.1 GB. [2021-08-26 01:31:37,262 INFO L168 Benchmark]: TraceAbstraction took 935.89 ms. Allocated memory is still 79.7 MB. Free memory was 59.2 MB in the beginning and 38.2 MB in the end (delta: 21.0 MB). Peak memory consumption was 27.1 MB. Max. memory is 16.1 GB. [2021-08-26 01:31:37,263 INFO L168 Benchmark]: Witness Printer took 3.57 ms. Allocated memory is still 79.7 MB. Free memory was 38.2 MB in the beginning and 37.7 MB in the end (delta: 523.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-26 01:31:37,265 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 52.4 MB. Free memory was 34.9 MB in the beginning and 34.9 MB in the end (delta: 38.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 369.04 ms. Allocated memory was 52.4 MB in the beginning and 65.0 MB in the end (delta: 12.6 MB). Free memory was 29.1 MB in the beginning and 42.9 MB in the end (delta: -13.9 MB). Peak memory consumption was 7.2 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 66.86 ms. Allocated memory is still 65.0 MB. Free memory was 42.9 MB in the beginning and 39.2 MB in the end (delta: 3.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 59.22 ms. Allocated memory is still 65.0 MB. Free memory was 39.2 MB in the beginning and 35.9 MB in the end (delta: 3.3 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 932.63 ms. Allocated memory was 65.0 MB in the beginning and 79.7 MB in the end (delta: 14.7 MB). Free memory was 35.9 MB in the beginning and 59.6 MB in the end (delta: -23.8 MB). Peak memory consumption was 12.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 935.89 ms. Allocated memory is still 79.7 MB. Free memory was 59.2 MB in the beginning and 38.2 MB in the end (delta: 21.0 MB). Peak memory consumption was 27.1 MB. Max. memory is 16.1 GB. * Witness Printer took 3.57 ms. Allocated memory is still 79.7 MB. Free memory was 38.2 MB in the beginning and 37.7 MB in the end (delta: 523.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 287]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of bitwiseOr at line 164, overapproximation of someUnaryDOUBLEoperation at line 54, overapproximation of someBinaryArithmeticDOUBLEoperation at line 165, overapproximation of bitwiseAnd at line 162, overapproximation of someBinaryDOUBLEComparisonOperation at line 286. Possible FailurePath: [L39-L44] static const double atanhi_atan[] = { 4.63647609000806093515e-01, 7.85398163397448278999e-01, 9.82793723247329054082e-01, 1.57079632679489655800e+00, }; [L46-L51] static const double atanlo_atan[] = { 2.26987774529616870924e-17, 3.06161699786838301793e-17, 1.39033110312309984516e-17, 6.12323399573676603587e-17, }; [L53-L60] static const double aT_atan[] = { 3.33333333333329318027e-01, -1.99999999998764832476e-01, 1.42857142725034663711e-01, -1.11111104054623557880e-01, 9.09088713343650656196e-02, -7.69187620504482999495e-02, 6.66107313738753120669e-02, -5.83357013379057348645e-02, 4.97687799461593236017e-02, -3.65315727442169155270e-02, 1.62858201153657823623e-02, }; [L62-L64] static const double one_atan = 1.0, pi_o_4 = 7.8539816339744827900E-01, pi_o_2 = 1.5707963267948965580E+00, pi = 3.1415926535897931160E+00, huge_atan = 1.0e300; [L141-L142] static const double tiny_atan2 = 1.0e-300, zero_atan2 = 0.0, pi_lo_atan2 = 1.2246467991473531772E-16; VAL [aT_atan={6:0}, atanhi_atan={9:0}, atanlo_atan={7:0}, huge_atan=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, one_atan=1, pi=785398163397448279/250000000000000000, pi_lo_atan2=3061616997868382943/25000000000000000000000000000000000, pi_o_2=785398163397448279/500000000000000000, pi_o_4=785398163397448279/1000000000000000000, tiny_atan2=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, zero_atan2=0] [L278] double x = -1.0 / 0.0; [L279] double y = __VERIFIER_nondet_double(); [L248] __int32_t hx, lx; VAL [aT_atan={6:0}, atanhi_atan={9:0}, atanlo_atan={7:0}, huge_atan=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, one_atan=1, pi=785398163397448279/250000000000000000, pi_lo_atan2=3061616997868382943/25000000000000000000000000000000000, pi_o_2=785398163397448279/500000000000000000, pi_o_4=785398163397448279/1000000000000000000, tiny_atan2=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, zero_atan2=0] [L250] ieee_double_shape_type ew_u; [L251] ew_u.value = (x) [L252] EXPR ew_u.parts.msw [L252] (hx) = ew_u.parts.msw [L253] EXPR ew_u.parts.lsw [L253] (lx) = ew_u.parts.lsw [L255] hx &= 0x7fffffff [L256] hx |= (__uint32_t)(lx | (-lx)) >> 31 [L257] hx = 0x7ff00000 - hx [L258] return 1 - (int)((__uint32_t)(hx | (-hx)) >> 31); VAL [aT_atan={6:0}, atanhi_atan={9:0}, atanlo_atan={7:0}, huge_atan=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, one_atan=1, pi=785398163397448279/250000000000000000, pi_lo_atan2=3061616997868382943/25000000000000000000000000000000000, pi_o_2=785398163397448279/500000000000000000, pi_o_4=785398163397448279/1000000000000000000, tiny_atan2=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, zero_atan2=0] [L281] EXPR isinf_double(x) && isfinite_double(y) [L262] __int32_t hx; VAL [aT_atan={6:0}, atanhi_atan={9:0}, atanlo_atan={7:0}, huge_atan=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, one_atan=1, pi=785398163397448279/250000000000000000, pi_lo_atan2=3061616997868382943/25000000000000000000000000000000000, pi_o_2=785398163397448279/500000000000000000, pi_o_4=785398163397448279/1000000000000000000, tiny_atan2=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, zero_atan2=0] [L264] ieee_double_shape_type gh_u; [L265] gh_u.value = (x) [L266] EXPR gh_u.parts.msw [L266] (hx) = gh_u.parts.msw [L268] return (int)((__uint32_t)((hx & 0x7fffffff) - 0x7ff00000) >> 31); VAL [aT_atan={6:0}, atanhi_atan={9:0}, atanlo_atan={7:0}, huge_atan=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, one_atan=1, pi=785398163397448279/250000000000000000, pi_lo_atan2=3061616997868382943/25000000000000000000000000000000000, pi_o_2=785398163397448279/500000000000000000, pi_o_4=785398163397448279/1000000000000000000, tiny_atan2=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, zero_atan2=0] [L281] EXPR isinf_double(x) && isfinite_double(y) VAL [aT_atan={6:0}, atanhi_atan={9:0}, atanlo_atan={7:0}, huge_atan=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, one_atan=1, pi=785398163397448279/250000000000000000, pi_lo_atan2=3061616997868382943/25000000000000000000000000000000000, pi_o_2=785398163397448279/500000000000000000, pi_o_4=785398163397448279/1000000000000000000, tiny_atan2=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, zero_atan2=0] [L281] COND TRUE isinf_double(x) && isfinite_double(y) && y > 0.0 [L145] double z; [L146] __int32_t k, m, hx, hy, ix, iy; [L147] __uint32_t lx, ly; VAL [aT_atan={6:0}, atanhi_atan={9:0}, atanlo_atan={7:0}, huge_atan=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, one_atan=1, pi=785398163397448279/250000000000000000, pi_lo_atan2=3061616997868382943/25000000000000000000000000000000000, pi_o_2=785398163397448279/500000000000000000, pi_o_4=785398163397448279/1000000000000000000, tiny_atan2=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, zero_atan2=0] [L150] ieee_double_shape_type ew_u; [L151] ew_u.value = (x) [L152] EXPR ew_u.parts.msw [L152] (hx) = ew_u.parts.msw [L153] EXPR ew_u.parts.lsw [L153] (lx) = ew_u.parts.lsw [L155] ix = hx & 0x7fffffff VAL [aT_atan={6:0}, atanhi_atan={9:0}, atanlo_atan={7:0}, huge_atan=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, one_atan=1, pi=785398163397448279/250000000000000000, pi_lo_atan2=3061616997868382943/25000000000000000000000000000000000, pi_o_2=785398163397448279/500000000000000000, pi_o_4=785398163397448279/1000000000000000000, tiny_atan2=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, zero_atan2=0] [L157] ieee_double_shape_type ew_u; [L158] ew_u.value = (y) [L159] EXPR ew_u.parts.msw [L159] (hy) = ew_u.parts.msw [L160] EXPR ew_u.parts.lsw [L160] (ly) = ew_u.parts.lsw [L162] iy = hy & 0x7fffffff VAL [aT_atan={6:0}, atanhi_atan={9:0}, atanlo_atan={7:0}, huge_atan=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, one_atan=1, pi=785398163397448279/250000000000000000, pi_lo_atan2=3061616997868382943/25000000000000000000000000000000000, pi_o_2=785398163397448279/500000000000000000, pi_o_4=785398163397448279/1000000000000000000, tiny_atan2=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, zero_atan2=0] [L163-L164] COND TRUE ((ix | ((lx | -lx) >> 31)) > 0x7ff00000) || ((iy | ((ly | -ly) >> 31)) > 0x7ff00000) [L165] return x + y; VAL [aT_atan={6:0}, atanhi_atan={9:0}, atanlo_atan={7:0}, huge_atan=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, one_atan=1, pi=785398163397448279/250000000000000000, pi_lo_atan2=3061616997868382943/25000000000000000000000000000000000, pi_o_2=785398163397448279/500000000000000000, pi_o_4=785398163397448279/1000000000000000000, tiny_atan2=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, zero_atan2=0] [L283] double res = __ieee754_atan2(y, x); [L286] COND TRUE res != pi VAL [aT_atan={6:0}, atanhi_atan={9:0}, atanlo_atan={7:0}, huge_atan=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, one_atan=1, pi=785398163397448279/250000000000000000, pi_lo_atan2=3061616997868382943/25000000000000000000000000000000000, pi_o_2=785398163397448279/500000000000000000, pi_o_4=785398163397448279/1000000000000000000, tiny_atan2=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, zero_atan2=0] [L287] reach_error() VAL [aT_atan={6:0}, atanhi_atan={9:0}, atanlo_atan={7:0}, huge_atan=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, one_atan=1, pi=785398163397448279/250000000000000000, pi_lo_atan2=3061616997868382943/25000000000000000000000000000000000, pi_o_2=785398163397448279/500000000000000000, pi_o_4=785398163397448279/1000000000000000000, tiny_atan2=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, zero_atan2=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 124 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 849.6ms, OverallIterations: 3, TraceHistogramMax: 1, EmptinessCheckTime: 11.0ms, AutomataDifference: 100.1ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 10.7ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 343 SDtfs, 0 SDslu, 163 SDs, 0 SdLazy, 5 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 10.7ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.0ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=124occurred in iteration=0, InterpolantAutomatonStates: 5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 47.4ms AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 17.3ms SsaConstructionTime, 272.1ms SatisfiabilityAnalysisTime, 112.5ms InterpolantComputationTime, 55 NumberOfCodeBlocks, 55 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 31 ConstructedInterpolants, 0 QuantifiedInterpolants, 32 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 [2021-08-26 01:31:37,314 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-dev-20ed64e [2021-08-26 01:31:39,184 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-26 01:31:39,187 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-26 01:31:39,228 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-26 01:31:39,229 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-26 01:31:39,232 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-26 01:31:39,234 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-26 01:31:39,240 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-26 01:31:39,245 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-26 01:31:39,249 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-26 01:31:39,250 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-26 01:31:39,252 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-26 01:31:39,252 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-26 01:31:39,254 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-26 01:31:39,256 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-26 01:31:39,259 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-26 01:31:39,260 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-26 01:31:39,261 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-26 01:31:39,263 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-26 01:31:39,268 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-26 01:31:39,269 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-26 01:31:39,270 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-26 01:31:39,272 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-26 01:31:39,273 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-26 01:31:39,279 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-26 01:31:39,280 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-26 01:31:39,287 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-26 01:31:39,289 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-26 01:31:39,290 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-26 01:31:39,290 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-26 01:31:39,291 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-26 01:31:39,291 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-26 01:31:39,293 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-26 01:31:39,293 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-26 01:31:39,294 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-26 01:31:39,295 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-26 01:31:39,295 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-26 01:31:39,296 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-26 01:31:39,296 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-26 01:31:39,297 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-26 01:31:39,298 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-26 01:31:39,299 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-08-26 01:31:39,336 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-26 01:31:39,336 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-26 01:31:39,337 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-26 01:31:39,337 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-26 01:31:39,339 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-26 01:31:39,339 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-26 01:31:39,339 INFO L138 SettingsManager]: * Use SBE=true [2021-08-26 01:31:39,340 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-26 01:31:39,340 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-26 01:31:39,340 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-26 01:31:39,341 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-26 01:31:39,341 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-26 01:31:39,341 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-26 01:31:39,341 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-26 01:31:39,341 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-08-26 01:31:39,342 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-08-26 01:31:39,342 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-26 01:31:39,342 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-26 01:31:39,342 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-26 01:31:39,342 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-26 01:31:39,343 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-26 01:31:39,343 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-26 01:31:39,343 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-26 01:31:39,343 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-26 01:31:39,343 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-26 01:31:39,344 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-26 01:31:39,344 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-26 01:31:39,344 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-08-26 01:31:39,344 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-08-26 01:31:39,344 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-26 01:31:39,344 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-26 01:31:39,345 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-08-26 01:31:39,345 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 37fbf0da8e0b6ff3b926d9957e6bddb594e87706 [2021-08-26 01:31:39,704 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-26 01:31:39,722 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-26 01:31:39,725 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-26 01:31:39,727 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-26 01:31:39,727 INFO L275 PluginConnector]: CDTParser initialized [2021-08-26 01:31:39,730 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/double_req_bl_0682b.c [2021-08-26 01:31:39,791 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e690b5492/61b43b02276f454b8cbea787ce3de060/FLAG657469083 [2021-08-26 01:31:40,244 INFO L306 CDTParser]: Found 1 translation units. [2021-08-26 01:31:40,245 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_0682b.c [2021-08-26 01:31:40,252 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e690b5492/61b43b02276f454b8cbea787ce3de060/FLAG657469083 [2021-08-26 01:31:40,640 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e690b5492/61b43b02276f454b8cbea787ce3de060 [2021-08-26 01:31:40,642 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-26 01:31:40,644 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-26 01:31:40,647 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-26 01:31:40,647 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-26 01:31:40,650 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-26 01:31:40,651 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 01:31:40" (1/1) ... [2021-08-26 01:31:40,652 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@cc86e99 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 01:31:40, skipping insertion in model container [2021-08-26 01:31:40,653 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 01:31:40" (1/1) ... [2021-08-26 01:31:40,659 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-26 01:31:40,696 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-26 01:31:40,944 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_0682b.c[6873,6886] [2021-08-26 01:31:40,949 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-26 01:31:40,970 INFO L203 MainTranslator]: Completed pre-run [2021-08-26 01:31:41,066 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_0682b.c[6873,6886] [2021-08-26 01:31:41,079 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-26 01:31:41,109 INFO L208 MainTranslator]: Completed translation [2021-08-26 01:31:41,110 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 01:31:41 WrapperNode [2021-08-26 01:31:41,110 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-26 01:31:41,111 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-26 01:31:41,111 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-26 01:31:41,112 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-26 01:31:41,118 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 01:31:41" (1/1) ... [2021-08-26 01:31:41,145 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 01:31:41" (1/1) ... [2021-08-26 01:31:41,194 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-26 01:31:41,201 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-26 01:31:41,201 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-26 01:31:41,202 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-26 01:31:41,210 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 01:31:41" (1/1) ... [2021-08-26 01:31:41,211 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 01:31:41" (1/1) ... [2021-08-26 01:31:41,218 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 01:31:41" (1/1) ... [2021-08-26 01:31:41,218 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 01:31:41" (1/1) ... [2021-08-26 01:31:41,250 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 01:31:41" (1/1) ... [2021-08-26 01:31:41,269 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 01:31:41" (1/1) ... [2021-08-26 01:31:41,272 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 01:31:41" (1/1) ... [2021-08-26 01:31:41,276 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-26 01:31:41,278 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-26 01:31:41,278 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-26 01:31:41,278 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-26 01:31:41,279 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 01:31:41" (1/1) ... [2021-08-26 01:31:41,284 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-26 01:31:41,291 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 01:31:41,302 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-08-26 01:31:41,328 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-08-26 01:31:41,346 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2021-08-26 01:31:41,346 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2021-08-26 01:31:41,347 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-08-26 01:31:41,347 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-26 01:31:41,347 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8 [2021-08-26 01:31:41,347 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-08-26 01:31:41,347 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-26 01:31:41,347 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-26 01:31:41,347 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-08-26 01:31:41,348 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-08-26 01:32:24,717 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-26 01:32:24,718 INFO L299 CfgBuilder]: Removed 52 assume(true) statements. [2021-08-26 01:32:24,720 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 01:32:24 BoogieIcfgContainer [2021-08-26 01:32:24,720 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-26 01:32:24,722 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-26 01:32:24,722 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-26 01:32:24,724 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-26 01:32:24,724 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.08 01:31:40" (1/3) ... [2021-08-26 01:32:24,725 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@440a62b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 01:32:24, skipping insertion in model container [2021-08-26 01:32:24,725 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 01:31:41" (2/3) ... [2021-08-26 01:32:24,725 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@440a62b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 01:32:24, skipping insertion in model container [2021-08-26 01:32:24,725 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 01:32:24" (3/3) ... [2021-08-26 01:32:24,726 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_0682b.c [2021-08-26 01:32:24,730 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-26 01:32:24,731 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-08-26 01:32:24,773 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-26 01:32:24,786 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-08-26 01:32:24,786 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-08-26 01:32:24,808 INFO L276 IsEmpty]: Start isEmpty. Operand has 124 states, 122 states have (on average 1.6967213114754098) internal successors, (207), 123 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 01:32:24,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-08-26 01:32:24,814 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 01:32:24,815 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 01:32:24,816 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-26 01:32:24,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 01:32:24,822 INFO L82 PathProgramCache]: Analyzing trace with hash -617567418, now seen corresponding path program 1 times [2021-08-26 01:32:24,836 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-26 01:32:24,836 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1051399584] [2021-08-26 01:32:24,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 01:32:24,837 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-26 01:32:24,838 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-26 01:32:24,845 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-26 01:32:24,881 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-08-26 01:32:25,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 01:32:25,373 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 1 conjunts are in the unsatisfiable core [2021-08-26 01:32:25,377 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 01:32:25,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 01:32:25,952 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-26 01:32:26,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 01:32:26,476 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-26 01:32:26,477 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1051399584] [2021-08-26 01:32:26,477 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1051399584] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-26 01:32:26,477 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-26 01:32:26,478 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-08-26 01:32:26,480 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545208437] [2021-08-26 01:32:26,485 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-08-26 01:32:26,485 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-26 01:32:26,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-08-26 01:32:26,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-08-26 01:32:26,498 INFO L87 Difference]: Start difference. First operand has 124 states, 122 states have (on average 1.6967213114754098) internal successors, (207), 123 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 01:32:26,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 01:32:26,524 INFO L93 Difference]: Finished difference Result 246 states and 412 transitions. [2021-08-26 01:32:26,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-08-26 01:32:26,525 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-08-26 01:32:26,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 01:32:26,534 INFO L225 Difference]: With dead ends: 246 [2021-08-26 01:32:26,534 INFO L226 Difference]: Without dead ends: 120 [2021-08-26 01:32:26,537 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-08-26 01:32:26,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2021-08-26 01:32:26,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 120. [2021-08-26 01:32:26,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 119 states have (on average 1.4201680672268908) internal successors, (169), 119 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 01:32:26,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 169 transitions. [2021-08-26 01:32:26,574 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 169 transitions. Word has length 15 [2021-08-26 01:32:26,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 01:32:26,575 INFO L470 AbstractCegarLoop]: Abstraction has 120 states and 169 transitions. [2021-08-26 01:32:26,575 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 01:32:26,575 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 169 transitions. [2021-08-26 01:32:26,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-08-26 01:32:26,576 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 01:32:26,576 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 01:32:26,598 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-08-26 01:32:26,793 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-26 01:32:26,793 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-26 01:32:26,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 01:32:26,796 INFO L82 PathProgramCache]: Analyzing trace with hash -397782484, now seen corresponding path program 1 times [2021-08-26 01:32:26,796 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-26 01:32:26,797 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [612880654] [2021-08-26 01:32:26,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 01:32:26,797 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-26 01:32:26,797 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-26 01:32:26,798 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-26 01:32:26,801 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-08-26 01:32:27,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 01:32:27,273 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 2 conjunts are in the unsatisfiable core [2021-08-26 01:32:27,275 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 01:32:27,927 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 01:32:27,927 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-26 01:32:28,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 01:32:28,449 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-26 01:32:28,449 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [612880654] [2021-08-26 01:32:28,450 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [612880654] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-26 01:32:28,450 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-26 01:32:28,450 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-08-26 01:32:28,450 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013317589] [2021-08-26 01:32:28,452 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-26 01:32:28,452 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-26 01:32:28,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-26 01:32:28,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-26 01:32:28,453 INFO L87 Difference]: Start difference. First operand 120 states and 169 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 01:32:28,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 01:32:28,918 INFO L93 Difference]: Finished difference Result 229 states and 326 transitions. [2021-08-26 01:32:28,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-26 01:32:28,920 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-08-26 01:32:28,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 01:32:28,921 INFO L225 Difference]: With dead ends: 229 [2021-08-26 01:32:28,922 INFO L226 Difference]: Without dead ends: 120 [2021-08-26 01:32:28,923 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 156.3ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-26 01:32:28,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2021-08-26 01:32:28,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 120. [2021-08-26 01:32:28,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 119 states have (on average 1.411764705882353) internal successors, (168), 119 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 01:32:28,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 168 transitions. [2021-08-26 01:32:28,933 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 168 transitions. Word has length 18 [2021-08-26 01:32:28,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 01:32:28,933 INFO L470 AbstractCegarLoop]: Abstraction has 120 states and 168 transitions. [2021-08-26 01:32:28,934 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 01:32:28,934 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 168 transitions. [2021-08-26 01:32:28,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-08-26 01:32:28,935 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 01:32:28,935 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 01:32:28,954 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-08-26 01:32:29,140 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-26 01:32:29,141 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-26 01:32:29,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 01:32:29,142 INFO L82 PathProgramCache]: Analyzing trace with hash -1006577033, now seen corresponding path program 1 times [2021-08-26 01:32:29,142 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-26 01:32:29,142 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1460677081] [2021-08-26 01:32:29,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 01:32:29,143 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-26 01:32:29,143 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-26 01:32:29,145 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-26 01:32:29,161 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-08-26 01:32:29,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 01:32:29,960 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 25 conjunts are in the unsatisfiable core [2021-08-26 01:32:29,962 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 01:32:31,306 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 33 [2021-08-26 01:32:42,480 INFO L354 Elim1Store]: treesize reduction 26, result has 46.9 percent of original size [2021-08-26 01:32:42,481 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 94 treesize of output 104 [2021-08-26 01:32:50,084 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-08-26 01:32:50,085 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 48 treesize of output 32 [2021-08-26 01:33:02,424 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 01:33:02,424 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-26 01:33:41,842 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-26 01:33:41,843 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1460677081] [2021-08-26 01:33:41,844 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Alternating quantifiers not yet supported [2021-08-26 01:33:41,844 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [322095133] [2021-08-26 01:33:41,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 01:33:41,844 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-08-26 01:33:41,845 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2021-08-26 01:33:41,850 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-08-26 01:33:41,853 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process [2021-08-26 01:33:45,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 01:33:45,466 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 25 conjunts are in the unsatisfiable core [2021-08-26 01:33:45,469 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 01:33:46,171 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 33 [2021-08-26 01:33:54,946 INFO L354 Elim1Store]: treesize reduction 26, result has 46.9 percent of original size [2021-08-26 01:33:54,946 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 94 treesize of output 104 [2021-08-26 01:34:01,392 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-08-26 01:34:01,392 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 48 treesize of output 32 [2021-08-26 01:34:06,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 01:34:06,361 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-26 01:34:24,875 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Alternating quantifiers not yet supported [2021-08-26 01:34:24,876 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1986127728] [2021-08-26 01:34:24,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 01:34:24,876 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 01:34:24,876 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 01:34:24,877 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 01:34:24,879 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-08-26 01:34:25,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 01:34:25,182 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 24 conjunts are in the unsatisfiable core [2021-08-26 01:34:25,185 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 01:34:25,860 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 33 [2021-08-26 01:34:35,389 INFO L354 Elim1Store]: treesize reduction 26, result has 46.9 percent of original size [2021-08-26 01:34:35,390 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 85 treesize of output 95 [2021-08-26 01:34:46,736 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-08-26 01:34:46,736 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 48 treesize of output 32 [2021-08-26 01:35:04,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 01:35:04,715 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-26 01:35:28,913 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Alternating quantifiers not yet supported [2021-08-26 01:35:28,913 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2021-08-26 01:35:28,913 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2021-08-26 01:35:28,914 ERROR L172 FreeRefinementEngine]: Strategy WOLF failed to provide any proof altough trace is infeasible [2021-08-26 01:35:28,914 INFO L626 BasicCegarLoop]: Counterexample might be feasible [2021-08-26 01:35:28,918 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 01:35:28,935 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (5)] Forceful destruction successful, exit code 0 [2021-08-26 01:35:29,145 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-08-26 01:35:29,339 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-08-26 01:35:29,521 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-26 01:35:29,525 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-26 01:35:29,545 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.08 01:35:29 BoogieIcfgContainer [2021-08-26 01:35:29,545 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-26 01:35:29,546 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-26 01:35:29,547 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-26 01:35:29,547 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-26 01:35:29,547 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 01:32:24" (3/4) ... [2021-08-26 01:35:29,550 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-08-26 01:35:29,551 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-26 01:35:29,552 INFO L168 Benchmark]: Toolchain (without parser) took 228907.48 ms. Allocated memory was 71.3 MB in the beginning and 88.1 MB in the end (delta: 16.8 MB). Free memory was 52.7 MB in the beginning and 61.0 MB in the end (delta: -8.3 MB). Peak memory consumption was 8.2 MB. Max. memory is 16.1 GB. [2021-08-26 01:35:29,553 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 71.3 MB. Free memory was 52.1 MB in the beginning and 52.1 MB in the end (delta: 36.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-26 01:35:29,556 INFO L168 Benchmark]: CACSL2BoogieTranslator took 463.71 ms. Allocated memory is still 71.3 MB. Free memory was 52.5 MB in the beginning and 48.6 MB in the end (delta: 3.9 MB). Peak memory consumption was 13.7 MB. Max. memory is 16.1 GB. [2021-08-26 01:35:29,556 INFO L168 Benchmark]: Boogie Procedure Inliner took 88.37 ms. Allocated memory is still 71.3 MB. Free memory was 48.6 MB in the beginning and 45.0 MB in the end (delta: 3.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-26 01:35:29,556 INFO L168 Benchmark]: Boogie Preprocessor took 75.72 ms. Allocated memory is still 71.3 MB. Free memory was 45.0 MB in the beginning and 41.3 MB in the end (delta: 3.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-08-26 01:35:29,557 INFO L168 Benchmark]: RCFGBuilder took 43443.02 ms. Allocated memory was 71.3 MB in the beginning and 88.1 MB in the end (delta: 16.8 MB). Free memory was 41.3 MB in the beginning and 62.7 MB in the end (delta: -21.4 MB). Peak memory consumption was 21.3 MB. Max. memory is 16.1 GB. [2021-08-26 01:35:29,558 INFO L168 Benchmark]: TraceAbstraction took 184823.42 ms. Allocated memory is still 88.1 MB. Free memory was 62.2 MB in the beginning and 61.9 MB in the end (delta: 332.8 kB). Peak memory consumption was 44.5 MB. Max. memory is 16.1 GB. [2021-08-26 01:35:29,560 INFO L168 Benchmark]: Witness Printer took 5.18 ms. Allocated memory is still 88.1 MB. Free memory was 61.9 MB in the beginning and 61.0 MB in the end (delta: 875.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-26 01:35:29,563 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 71.3 MB. Free memory was 52.1 MB in the beginning and 52.1 MB in the end (delta: 36.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 463.71 ms. Allocated memory is still 71.3 MB. Free memory was 52.5 MB in the beginning and 48.6 MB in the end (delta: 3.9 MB). Peak memory consumption was 13.7 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 88.37 ms. Allocated memory is still 71.3 MB. Free memory was 48.6 MB in the beginning and 45.0 MB in the end (delta: 3.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 75.72 ms. Allocated memory is still 71.3 MB. Free memory was 45.0 MB in the beginning and 41.3 MB in the end (delta: 3.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 43443.02 ms. Allocated memory was 71.3 MB in the beginning and 88.1 MB in the end (delta: 16.8 MB). Free memory was 41.3 MB in the beginning and 62.7 MB in the end (delta: -21.4 MB). Peak memory consumption was 21.3 MB. Max. memory is 16.1 GB. * TraceAbstraction took 184823.42 ms. Allocated memory is still 88.1 MB. Free memory was 62.2 MB in the beginning and 61.9 MB in the end (delta: 332.8 kB). Peak memory consumption was 44.5 MB. Max. memory is 16.1 GB. * Witness Printer took 5.18 ms. Allocated memory is still 88.1 MB. Free memory was 61.9 MB in the beginning and 61.0 MB in the end (delta: 875.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 287]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L39-L44] static const double atanhi_atan[] = { 4.63647609000806093515e-01, 7.85398163397448278999e-01, 9.82793723247329054082e-01, 1.57079632679489655800e+00, }; [L46-L51] static const double atanlo_atan[] = { 2.26987774529616870924e-17, 3.06161699786838301793e-17, 1.39033110312309984516e-17, 6.12323399573676603587e-17, }; [L53-L60] static const double aT_atan[] = { 3.33333333333329318027e-01, -1.99999999998764832476e-01, 1.42857142725034663711e-01, -1.11111104054623557880e-01, 9.09088713343650656196e-02, -7.69187620504482999495e-02, 6.66107313738753120669e-02, -5.83357013379057348645e-02, 4.97687799461593236017e-02, -3.65315727442169155270e-02, 1.62858201153657823623e-02, }; [L62-L64] static const double one_atan = 1.0, pi_o_4 = 7.8539816339744827900E-01, pi_o_2 = 1.5707963267948965580E+00, pi = 3.1415926535897931160E+00, huge_atan = 1.0e300; [L141-L142] static const double tiny_atan2 = 1.0e-300, zero_atan2 = 0.0, pi_lo_atan2 = 1.2246467991473531772E-16; [L278] double x = -1.0 / 0.0; [L279] double y = __VERIFIER_nondet_double(); [L248] __int32_t hx, lx; [L250] ieee_double_shape_type ew_u; [L251] ew_u.value = (x) [L252] EXPR ew_u.parts.msw [L252] (hx) = ew_u.parts.msw [L253] EXPR ew_u.parts.lsw [L253] (lx) = ew_u.parts.lsw [L255] hx &= 0x7fffffff [L256] hx |= (__uint32_t)(lx | (-lx)) >> 31 [L257] hx = 0x7ff00000 - hx [L258] return 1 - (int)((__uint32_t)(hx | (-hx)) >> 31); [L281] EXPR isinf_double(x) && isfinite_double(y) [L262] __int32_t hx; [L264] ieee_double_shape_type gh_u; [L265] gh_u.value = (x) [L266] EXPR gh_u.parts.msw [L266] (hx) = gh_u.parts.msw [L268] return (int)((__uint32_t)((hx & 0x7fffffff) - 0x7ff00000) >> 31); [L281] EXPR isinf_double(x) && isfinite_double(y) [L281] COND TRUE isinf_double(x) && isfinite_double(y) && y > 0.0 [L145] double z; [L146] __int32_t k, m, hx, hy, ix, iy; [L147] __uint32_t lx, ly; [L150] ieee_double_shape_type ew_u; [L151] ew_u.value = (x) [L152] EXPR ew_u.parts.msw [L152] (hx) = ew_u.parts.msw [L153] EXPR ew_u.parts.lsw [L153] (lx) = ew_u.parts.lsw [L155] ix = hx & 0x7fffffff [L157] ieee_double_shape_type ew_u; [L158] ew_u.value = (y) [L159] EXPR ew_u.parts.msw [L159] (hy) = ew_u.parts.msw [L160] EXPR ew_u.parts.lsw [L160] (ly) = ew_u.parts.lsw [L162] iy = hy & 0x7fffffff [L163-L164] COND TRUE ((ix | ((lx | -lx) >> 31)) > 0x7ff00000) || ((iy | ((ly | -ly) >> 31)) > 0x7ff00000) [L165] return x + y; [L283] double res = __ieee754_atan2(y, x); [L286] COND TRUE res != pi [L287] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 124 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 184753.3ms, OverallIterations: 3, TraceHistogramMax: 1, EmptinessCheckTime: 13.8ms, AutomataDifference: 521.9ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 15.6ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 343 SDtfs, 0 SDslu, 163 SDs, 0 SdLazy, 5 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 443.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 62 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 156.6ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=124occurred in iteration=0, InterpolantAutomatonStates: 5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 34.4ms AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 74.0ms SsaConstructionTime, 658.2ms SatisfiabilityAnalysisTime, 2335.6ms InterpolantComputationTime, 33 NumberOfCodeBlocks, 33 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 62 ConstructedInterpolants, 0 QuantifiedInterpolants, 64 SizeOfPredicates, 0 NumberOfNonLiveVariables, 275 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 could not prove your program: unable to determine feasibility of some traces [2021-08-26 01:35:29,774 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forcibly destroying the process [2021-08-26 01:35:29,854 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 137 Received shutdown request...