./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-benchs/inv_sqrt_Quake.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83c25937-be3b-4a4f-bb50-d068f2067f2f/bin/uautomizer-UnR33cPsHg/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83c25937-be3b-4a4f-bb50-d068f2067f2f/bin/uautomizer-UnR33cPsHg/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83c25937-be3b-4a4f-bb50-d068f2067f2f/bin/uautomizer-UnR33cPsHg/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83c25937-be3b-4a4f-bb50-d068f2067f2f/bin/uautomizer-UnR33cPsHg/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-benchs/inv_sqrt_Quake.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83c25937-be3b-4a4f-bb50-d068f2067f2f/bin/uautomizer-UnR33cPsHg/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83c25937-be3b-4a4f-bb50-d068f2067f2f/bin/uautomizer-UnR33cPsHg --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 1f9d99a1e914bb5db4e356a6920ef9cb10f38df5cae5223ce35a4e418e6502dd .................................................................................................................................................................................................................................................................................................. Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83c25937-be3b-4a4f-bb50-d068f2067f2f/bin/uautomizer-UnR33cPsHg/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83c25937-be3b-4a4f-bb50-d068f2067f2f/bin/uautomizer-UnR33cPsHg/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83c25937-be3b-4a4f-bb50-d068f2067f2f/bin/uautomizer-UnR33cPsHg/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83c25937-be3b-4a4f-bb50-d068f2067f2f/bin/uautomizer-UnR33cPsHg/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-benchs/inv_sqrt_Quake.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83c25937-be3b-4a4f-bb50-d068f2067f2f/bin/uautomizer-UnR33cPsHg/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83c25937-be3b-4a4f-bb50-d068f2067f2f/bin/uautomizer-UnR33cPsHg --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 1f9d99a1e914bb5db4e356a6920ef9cb10f38df5cae5223ce35a4e418e6502dd ................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN --- Real Ultimate output --- This is Ultimate 0.2.1-dev-b2eff8b [2021-10-28 08:34:25,224 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 08:34:25,227 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 08:34:25,288 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 08:34:25,288 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 08:34:25,292 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 08:34:25,294 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 08:34:25,298 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 08:34:25,302 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 08:34:25,307 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 08:34:25,309 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 08:34:25,310 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 08:34:25,311 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 08:34:25,314 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 08:34:25,316 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 08:34:25,320 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 08:34:25,322 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 08:34:25,323 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 08:34:25,326 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 08:34:25,333 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 08:34:25,335 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 08:34:25,337 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 08:34:25,340 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 08:34:25,341 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 08:34:25,350 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 08:34:25,351 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 08:34:25,352 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 08:34:25,354 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 08:34:25,354 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 08:34:25,356 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 08:34:25,356 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 08:34:25,357 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 08:34:25,359 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 08:34:25,361 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 08:34:25,362 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 08:34:25,363 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 08:34:25,363 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 08:34:25,364 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 08:34:25,364 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 08:34:25,365 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 08:34:25,366 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 08:34:25,367 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83c25937-be3b-4a4f-bb50-d068f2067f2f/bin/uautomizer-UnR33cPsHg/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-28 08:34:25,412 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 08:34:25,412 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 08:34:25,413 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 08:34:25,413 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 08:34:25,421 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 08:34:25,422 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 08:34:25,422 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 08:34:25,422 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 08:34:25,423 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 08:34:25,423 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 08:34:25,424 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 08:34:25,424 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 08:34:25,424 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-28 08:34:25,425 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-28 08:34:25,425 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-28 08:34:25,425 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 08:34:25,425 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-28 08:34:25,426 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 08:34:25,426 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-28 08:34:25,426 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 08:34:25,426 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 08:34:25,427 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-28 08:34:25,427 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 08:34:25,427 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 08:34:25,427 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-28 08:34:25,428 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-28 08:34:25,428 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-28 08:34:25,428 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-28 08:34:25,428 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-28 08:34:25,430 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-28 08:34:25,430 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-28 08:34:25,430 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 08:34:25,431 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:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83c25937-be3b-4a4f-bb50-d068f2067f2f/bin/uautomizer-UnR33cPsHg/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83c25937-be3b-4a4f-bb50-d068f2067f2f/bin/uautomizer-UnR33cPsHg Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1f9d99a1e914bb5db4e356a6920ef9cb10f38df5cae5223ce35a4e418e6502dd [2021-10-28 08:34:25,735 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 08:34:25,757 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 08:34:25,760 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 08:34:25,762 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 08:34:25,762 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 08:34:25,763 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83c25937-be3b-4a4f-bb50-d068f2067f2f/bin/uautomizer-UnR33cPsHg/../../sv-benchmarks/c/float-benchs/inv_sqrt_Quake.c [2021-10-28 08:34:25,850 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83c25937-be3b-4a4f-bb50-d068f2067f2f/bin/uautomizer-UnR33cPsHg/data/b1b205ef7/405a74adce764ef0af4b51cb364ff14c/FLAG7cd370e30 [2021-10-28 08:34:26,401 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 08:34:26,402 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83c25937-be3b-4a4f-bb50-d068f2067f2f/sv-benchmarks/c/float-benchs/inv_sqrt_Quake.c [2021-10-28 08:34:26,413 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83c25937-be3b-4a4f-bb50-d068f2067f2f/bin/uautomizer-UnR33cPsHg/data/b1b205ef7/405a74adce764ef0af4b51cb364ff14c/FLAG7cd370e30 [2021-10-28 08:34:26,756 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83c25937-be3b-4a4f-bb50-d068f2067f2f/bin/uautomizer-UnR33cPsHg/data/b1b205ef7/405a74adce764ef0af4b51cb364ff14c [2021-10-28 08:34:26,764 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 08:34:26,766 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-28 08:34:26,769 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 08:34:26,770 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 08:34:26,773 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 08:34:26,774 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 08:34:26" (1/1) ... [2021-10-28 08:34:26,775 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@54e7b1c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:34:26, skipping insertion in model container [2021-10-28 08:34:26,775 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 08:34:26" (1/1) ... [2021-10-28 08:34:26,782 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 08:34:26,796 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 08:34:26,990 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83c25937-be3b-4a4f-bb50-d068f2067f2f/sv-benchmarks/c/float-benchs/inv_sqrt_Quake.c[585,598] [2021-10-28 08:34:27,003 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 08:34:27,012 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 08:34:27,025 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83c25937-be3b-4a4f-bb50-d068f2067f2f/sv-benchmarks/c/float-benchs/inv_sqrt_Quake.c[585,598] [2021-10-28 08:34:27,032 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 08:34:27,046 INFO L208 MainTranslator]: Completed translation [2021-10-28 08:34:27,047 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:34:27 WrapperNode [2021-10-28 08:34:27,047 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 08:34:27,048 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-28 08:34:27,048 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-28 08:34:27,048 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-28 08:34:27,056 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:34:27" (1/1) ... [2021-10-28 08:34:27,063 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:34:27" (1/1) ... [2021-10-28 08:34:27,083 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-28 08:34:27,084 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 08:34:27,084 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 08:34:27,084 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 08:34:27,092 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:34:27" (1/1) ... [2021-10-28 08:34:27,093 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:34:27" (1/1) ... [2021-10-28 08:34:27,095 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:34:27" (1/1) ... [2021-10-28 08:34:27,095 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:34:27" (1/1) ... [2021-10-28 08:34:27,101 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:34:27" (1/1) ... [2021-10-28 08:34:27,103 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:34:27" (1/1) ... [2021-10-28 08:34:27,104 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:34:27" (1/1) ... [2021-10-28 08:34:27,106 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 08:34:27,107 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 08:34:27,108 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 08:34:27,108 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 08:34:27,109 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:34:27" (1/1) ... [2021-10-28 08:34:27,117 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 08:34:27,130 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83c25937-be3b-4a4f-bb50-d068f2067f2f/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:34:27,140 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83c25937-be3b-4a4f-bb50-d068f2067f2f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-28 08:34:27,159 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83c25937-be3b-4a4f-bb50-d068f2067f2f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-28 08:34:27,194 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-28 08:34:27,194 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 08:34:27,194 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-10-28 08:34:27,195 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-28 08:34:27,195 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-10-28 08:34:27,195 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 08:34:27,195 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 08:34:27,195 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-28 08:34:27,195 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-28 08:34:27,396 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 08:34:27,397 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2021-10-28 08:34:27,398 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 08:34:27 BoogieIcfgContainer [2021-10-28 08:34:27,399 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 08:34:27,401 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-28 08:34:27,401 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-28 08:34:27,404 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-28 08:34:27,405 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 08:34:26" (1/3) ... [2021-10-28 08:34:27,405 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b5157cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 08:34:27, skipping insertion in model container [2021-10-28 08:34:27,405 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:34:27" (2/3) ... [2021-10-28 08:34:27,406 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b5157cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 08:34:27, skipping insertion in model container [2021-10-28 08:34:27,406 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 08:34:27" (3/3) ... [2021-10-28 08:34:27,408 INFO L111 eAbstractionObserver]: Analyzing ICFG inv_sqrt_Quake.c [2021-10-28 08:34:27,413 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-28 08:34:27,413 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-28 08:34:27,464 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-28 08:34:27,470 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, mAutomataTypeConcurrency=PETRI_NET, 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 [2021-10-28 08:34:27,471 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-28 08:34:27,501 INFO L276 IsEmpty]: Start isEmpty. Operand has 12 states, 10 states have (on average 1.3) internal successors, (13), 11 states have internal predecessors, (13), 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) [2021-10-28 08:34:27,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-28 08:34:27,505 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:34:27,506 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:34:27,506 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 08:34:27,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:34:27,512 INFO L85 PathProgramCache]: Analyzing trace with hash 1804965382, now seen corresponding path program 1 times [2021-10-28 08:34:27,535 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:34:27,536 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [361313856] [2021-10-28 08:34:27,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:34:27,537 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:34:27,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:34:27,683 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:34:27,683 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:34:27,684 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [361313856] [2021-10-28 08:34:27,685 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [361313856] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:34:27,685 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:34:27,685 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-28 08:34:27,687 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726925973] [2021-10-28 08:34:27,692 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-28 08:34:27,692 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:34:27,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-28 08:34:27,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-28 08:34:27,708 INFO L87 Difference]: Start difference. First operand has 12 states, 10 states have (on average 1.3) internal successors, (13), 11 states have internal predecessors, (13), 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 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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) [2021-10-28 08:34:27,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:34:27,722 INFO L93 Difference]: Finished difference Result 21 states and 22 transitions. [2021-10-28 08:34:27,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-28 08:34:27,723 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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 7 [2021-10-28 08:34:27,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:34:27,731 INFO L225 Difference]: With dead ends: 21 [2021-10-28 08:34:27,732 INFO L226 Difference]: Without dead ends: 8 [2021-10-28 08:34:27,734 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-28 08:34:27,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2021-10-28 08:34:27,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2021-10-28 08:34:27,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 1.0) internal successors, (7), 7 states have internal predecessors, (7), 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) [2021-10-28 08:34:27,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 7 transitions. [2021-10-28 08:34:27,766 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 7 transitions. Word has length 7 [2021-10-28 08:34:27,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:34:27,767 INFO L470 AbstractCegarLoop]: Abstraction has 8 states and 7 transitions. [2021-10-28 08:34:27,767 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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) [2021-10-28 08:34:27,767 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 7 transitions. [2021-10-28 08:34:27,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-28 08:34:27,768 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:34:27,768 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:34:27,769 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-28 08:34:27,769 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 08:34:27,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:34:27,770 INFO L85 PathProgramCache]: Analyzing trace with hash 1806812424, now seen corresponding path program 1 times [2021-10-28 08:34:27,770 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:34:27,771 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1122072793] [2021-10-28 08:34:27,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:34:27,772 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:34:27,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 08:34:27,815 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 08:34:27,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 08:34:27,866 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 08:34:27,867 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-10-28 08:34:27,869 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 08:34:27,871 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-28 08:34:27,874 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1] [2021-10-28 08:34:27,877 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-28 08:34:27,898 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 08:34:27 BoogieIcfgContainer [2021-10-28 08:34:27,898 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-28 08:34:27,899 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 08:34:27,899 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 08:34:27,899 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 08:34:27,900 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 08:34:27" (3/4) ... [2021-10-28 08:34:27,903 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-28 08:34:27,903 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 08:34:27,905 INFO L168 Benchmark]: Toolchain (without parser) took 1138.24 ms. Allocated memory was 90.2 MB in the beginning and 127.9 MB in the end (delta: 37.7 MB). Free memory was 55.1 MB in the beginning and 65.8 MB in the end (delta: -10.6 MB). Peak memory consumption was 24.3 MB. Max. memory is 16.1 GB. [2021-10-28 08:34:27,906 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 90.2 MB. Free memory was 65.0 MB in the beginning and 65.0 MB in the end (delta: 27.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 08:34:27,907 INFO L168 Benchmark]: CACSL2BoogieTranslator took 277.91 ms. Allocated memory was 90.2 MB in the beginning and 127.9 MB in the end (delta: 37.7 MB). Free memory was 54.9 MB in the beginning and 102.9 MB in the end (delta: -48.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-28 08:34:27,908 INFO L168 Benchmark]: Boogie Procedure Inliner took 35.24 ms. Allocated memory is still 127.9 MB. Free memory was 102.7 MB in the beginning and 100.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 08:34:27,909 INFO L168 Benchmark]: Boogie Preprocessor took 22.89 ms. Allocated memory is still 127.9 MB. Free memory was 100.8 MB in the beginning and 100.0 MB in the end (delta: 760.4 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 08:34:27,909 INFO L168 Benchmark]: RCFGBuilder took 291.46 ms. Allocated memory is still 127.9 MB. Free memory was 100.0 MB in the beginning and 90.2 MB in the end (delta: 9.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-28 08:34:27,910 INFO L168 Benchmark]: TraceAbstraction took 497.55 ms. Allocated memory is still 127.9 MB. Free memory was 89.5 MB in the beginning and 66.4 MB in the end (delta: 23.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. [2021-10-28 08:34:27,911 INFO L168 Benchmark]: Witness Printer took 4.59 ms. Allocated memory is still 127.9 MB. Free memory was 66.4 MB in the beginning and 65.8 MB in the end (delta: 636.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 08:34:27,914 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 90.2 MB. Free memory was 65.0 MB in the beginning and 65.0 MB in the end (delta: 27.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 277.91 ms. Allocated memory was 90.2 MB in the beginning and 127.9 MB in the end (delta: 37.7 MB). Free memory was 54.9 MB in the beginning and 102.9 MB in the end (delta: -48.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 35.24 ms. Allocated memory is still 127.9 MB. Free memory was 102.7 MB in the beginning and 100.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 22.89 ms. Allocated memory is still 127.9 MB. Free memory was 100.8 MB in the beginning and 100.0 MB in the end (delta: 760.4 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 291.46 ms. Allocated memory is still 127.9 MB. Free memory was 100.0 MB in the beginning and 90.2 MB in the end (delta: 9.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 497.55 ms. Allocated memory is still 127.9 MB. Free memory was 89.5 MB in the beginning and 66.4 MB in the end (delta: 23.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. * Witness Printer took 4.59 ms. Allocated memory is still 127.9 MB. Free memory was 66.4 MB in the beginning and 65.8 MB in the end (delta: 636.1 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, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 13]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 52, overapproximation of someBinaryDOUBLEComparisonOperation at line 52, overapproximation of someBinaryArithmeticFLOAToperation at line 22. Possible FailurePath: [L45] float a,r; [L47] a = __VERIFIER_nondet_float() [L11] COND FALSE !(!cond) [L22] float xhalf = 0.5f*x; [L23] union float_int i; [L24] i.f = x [L25] EXPR i.i [L25] i.i = 0x5f3759df - (i.i>>1) [L26] EXPR i.f [L26] x = i.f [L27] x = x*(1.5f-xhalf*x*x) [L28] return x; [L28] return x; [L50] r = InvSqrt(a) [L13] COND TRUE !(cond) [L13] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 12 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.4s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 11 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=12occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 14 NumberOfCodeBlocks, 14 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 6 ConstructedInterpolants, 0 QuantifiedInterpolants, 6 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-10-28 08:34:27,964 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83c25937-be3b-4a4f-bb50-d068f2067f2f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-dev-b2eff8b [2021-10-28 08:34:30,491 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 08:34:30,494 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 08:34:30,556 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 08:34:30,556 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 08:34:30,563 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 08:34:30,565 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 08:34:30,573 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 08:34:30,577 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 08:34:30,585 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 08:34:30,587 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 08:34:30,589 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 08:34:30,589 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 08:34:30,592 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 08:34:30,593 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 08:34:30,599 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 08:34:30,600 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 08:34:30,601 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 08:34:30,603 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 08:34:30,606 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 08:34:30,608 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 08:34:30,609 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 08:34:30,611 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 08:34:30,612 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 08:34:30,616 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 08:34:30,616 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 08:34:30,617 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 08:34:30,618 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 08:34:30,619 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 08:34:30,620 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 08:34:30,621 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 08:34:30,622 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 08:34:30,623 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 08:34:30,624 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 08:34:30,625 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 08:34:30,625 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 08:34:30,626 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 08:34:30,627 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 08:34:30,627 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 08:34:30,628 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 08:34:30,629 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 08:34:30,631 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83c25937-be3b-4a4f-bb50-d068f2067f2f/bin/uautomizer-UnR33cPsHg/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-10-28 08:34:30,658 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 08:34:30,660 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 08:34:30,661 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 08:34:30,661 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 08:34:30,664 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 08:34:30,664 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 08:34:30,664 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 08:34:30,665 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 08:34:30,665 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 08:34:30,665 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 08:34:30,666 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 08:34:30,667 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-28 08:34:30,667 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-28 08:34:30,667 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-28 08:34:30,667 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-28 08:34:30,667 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-28 08:34:30,668 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 08:34:30,668 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-28 08:34:30,668 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 08:34:30,668 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-28 08:34:30,669 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 08:34:30,669 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 08:34:30,669 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-28 08:34:30,669 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 08:34:30,670 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 08:34:30,670 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-28 08:34:30,670 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-28 08:34:30,670 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-10-28 08:34:30,671 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-28 08:34:30,671 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-28 08:34:30,671 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-28 08:34:30,671 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-28 08:34:30,672 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 08:34:30,672 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-28 08:34:30,672 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:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83c25937-be3b-4a4f-bb50-d068f2067f2f/bin/uautomizer-UnR33cPsHg/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83c25937-be3b-4a4f-bb50-d068f2067f2f/bin/uautomizer-UnR33cPsHg Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1f9d99a1e914bb5db4e356a6920ef9cb10f38df5cae5223ce35a4e418e6502dd [2021-10-28 08:34:31,127 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 08:34:31,165 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 08:34:31,169 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 08:34:31,170 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 08:34:31,171 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 08:34:31,172 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83c25937-be3b-4a4f-bb50-d068f2067f2f/bin/uautomizer-UnR33cPsHg/../../sv-benchmarks/c/float-benchs/inv_sqrt_Quake.c [2021-10-28 08:34:31,253 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83c25937-be3b-4a4f-bb50-d068f2067f2f/bin/uautomizer-UnR33cPsHg/data/030b2b408/97a9ad936aa342edb99ba25efc7d49ea/FLAGa732040f3 [2021-10-28 08:34:31,738 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 08:34:31,738 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83c25937-be3b-4a4f-bb50-d068f2067f2f/sv-benchmarks/c/float-benchs/inv_sqrt_Quake.c [2021-10-28 08:34:31,745 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83c25937-be3b-4a4f-bb50-d068f2067f2f/bin/uautomizer-UnR33cPsHg/data/030b2b408/97a9ad936aa342edb99ba25efc7d49ea/FLAGa732040f3 [2021-10-28 08:34:32,129 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83c25937-be3b-4a4f-bb50-d068f2067f2f/bin/uautomizer-UnR33cPsHg/data/030b2b408/97a9ad936aa342edb99ba25efc7d49ea [2021-10-28 08:34:32,135 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 08:34:32,137 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-28 08:34:32,140 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 08:34:32,140 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 08:34:32,144 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 08:34:32,145 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 08:34:32" (1/1) ... [2021-10-28 08:34:32,147 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5cc593e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:34:32, skipping insertion in model container [2021-10-28 08:34:32,148 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 08:34:32" (1/1) ... [2021-10-28 08:34:32,155 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 08:34:32,173 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 08:34:32,366 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83c25937-be3b-4a4f-bb50-d068f2067f2f/sv-benchmarks/c/float-benchs/inv_sqrt_Quake.c[585,598] [2021-10-28 08:34:32,392 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 08:34:32,409 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 08:34:32,428 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83c25937-be3b-4a4f-bb50-d068f2067f2f/sv-benchmarks/c/float-benchs/inv_sqrt_Quake.c[585,598] [2021-10-28 08:34:32,444 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 08:34:32,483 INFO L208 MainTranslator]: Completed translation [2021-10-28 08:34:32,483 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:34:32 WrapperNode [2021-10-28 08:34:32,483 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 08:34:32,485 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-28 08:34:32,485 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-28 08:34:32,485 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-28 08:34:32,493 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:34:32" (1/1) ... [2021-10-28 08:34:32,527 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:34:32" (1/1) ... [2021-10-28 08:34:32,553 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-28 08:34:32,554 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 08:34:32,555 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 08:34:32,555 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 08:34:32,563 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:34:32" (1/1) ... [2021-10-28 08:34:32,563 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:34:32" (1/1) ... [2021-10-28 08:34:32,573 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:34:32" (1/1) ... [2021-10-28 08:34:32,573 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:34:32" (1/1) ... [2021-10-28 08:34:32,596 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:34:32" (1/1) ... [2021-10-28 08:34:32,598 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:34:32" (1/1) ... [2021-10-28 08:34:32,600 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:34:32" (1/1) ... [2021-10-28 08:34:32,603 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 08:34:32,603 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 08:34:32,604 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 08:34:32,604 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 08:34:32,605 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:34:32" (1/1) ... [2021-10-28 08:34:32,613 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 08:34:32,624 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83c25937-be3b-4a4f-bb50-d068f2067f2f/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:34:32,640 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83c25937-be3b-4a4f-bb50-d068f2067f2f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-28 08:34:32,667 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83c25937-be3b-4a4f-bb50-d068f2067f2f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-28 08:34:32,687 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-28 08:34:32,687 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 08:34:32,687 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2021-10-28 08:34:32,688 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-28 08:34:32,688 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 08:34:32,688 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 08:34:32,688 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2021-10-28 08:34:32,688 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-28 08:34:32,688 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-28 08:34:35,043 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 08:34:35,043 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2021-10-28 08:34:35,045 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 08:34:35 BoogieIcfgContainer [2021-10-28 08:34:35,045 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 08:34:35,047 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-28 08:34:35,047 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-28 08:34:35,049 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-28 08:34:35,049 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 08:34:32" (1/3) ... [2021-10-28 08:34:35,050 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5eabaf04 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 08:34:35, skipping insertion in model container [2021-10-28 08:34:35,050 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:34:32" (2/3) ... [2021-10-28 08:34:35,051 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5eabaf04 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 08:34:35, skipping insertion in model container [2021-10-28 08:34:35,051 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 08:34:35" (3/3) ... [2021-10-28 08:34:35,052 INFO L111 eAbstractionObserver]: Analyzing ICFG inv_sqrt_Quake.c [2021-10-28 08:34:35,058 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-28 08:34:35,058 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-28 08:34:35,113 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-28 08:34:35,119 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, mAutomataTypeConcurrency=PETRI_NET, 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 [2021-10-28 08:34:35,120 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-28 08:34:35,130 INFO L276 IsEmpty]: Start isEmpty. Operand has 12 states, 10 states have (on average 1.3) internal successors, (13), 11 states have internal predecessors, (13), 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) [2021-10-28 08:34:35,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-28 08:34:35,134 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:34:35,145 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:34:35,145 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 08:34:35,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:34:35,151 INFO L85 PathProgramCache]: Analyzing trace with hash 1804965382, now seen corresponding path program 1 times [2021-10-28 08:34:35,163 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 08:34:35,164 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1745387857] [2021-10-28 08:34:35,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:34:35,165 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 08:34:35,165 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83c25937-be3b-4a4f-bb50-d068f2067f2f/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 08:34:35,170 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83c25937-be3b-4a4f-bb50-d068f2067f2f/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 08:34:35,173 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83c25937-be3b-4a4f-bb50-d068f2067f2f/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-28 08:34:35,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:34:35,446 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-28 08:34:35,449 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 08:34:35,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:34:35,511 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 08:34:35,548 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:34:35,548 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 08:34:35,549 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1745387857] [2021-10-28 08:34:35,549 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1745387857] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 08:34:35,550 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:34:35,550 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-28 08:34:35,552 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660277252] [2021-10-28 08:34:35,557 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-28 08:34:35,557 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 08:34:35,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-28 08:34:35,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-28 08:34:35,573 INFO L87 Difference]: Start difference. First operand has 12 states, 10 states have (on average 1.3) internal successors, (13), 11 states have internal predecessors, (13), 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 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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) [2021-10-28 08:34:35,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:34:35,586 INFO L93 Difference]: Finished difference Result 21 states and 22 transitions. [2021-10-28 08:34:35,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-28 08:34:35,588 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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 7 [2021-10-28 08:34:35,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:34:35,596 INFO L225 Difference]: With dead ends: 21 [2021-10-28 08:34:35,596 INFO L226 Difference]: Without dead ends: 8 [2021-10-28 08:34:35,598 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-28 08:34:35,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2021-10-28 08:34:35,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2021-10-28 08:34:35,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 1.0) internal successors, (7), 7 states have internal predecessors, (7), 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) [2021-10-28 08:34:35,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 7 transitions. [2021-10-28 08:34:35,623 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 7 transitions. Word has length 7 [2021-10-28 08:34:35,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:34:35,623 INFO L470 AbstractCegarLoop]: Abstraction has 8 states and 7 transitions. [2021-10-28 08:34:35,624 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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) [2021-10-28 08:34:35,624 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 7 transitions. [2021-10-28 08:34:35,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-28 08:34:35,625 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:34:35,625 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:34:35,647 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83c25937-be3b-4a4f-bb50-d068f2067f2f/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-28 08:34:35,840 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83c25937-be3b-4a4f-bb50-d068f2067f2f/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 08:34:35,841 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 08:34:35,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:34:35,842 INFO L85 PathProgramCache]: Analyzing trace with hash 1806812424, now seen corresponding path program 1 times [2021-10-28 08:34:35,843 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 08:34:35,843 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [707804499] [2021-10-28 08:34:35,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:34:35,844 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 08:34:35,844 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83c25937-be3b-4a4f-bb50-d068f2067f2f/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 08:34:35,845 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83c25937-be3b-4a4f-bb50-d068f2067f2f/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 08:34:35,848 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83c25937-be3b-4a4f-bb50-d068f2067f2f/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-28 08:34:38,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:34:38,463 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-28 08:34:38,466 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 08:34:53,220 WARN L838 $PredicateComparison]: unable to prove that (and (exists ((|v_skolemized_q#valueAsBitvector_3| (_ BitVec 32))) (let ((.cse0 (fp ((_ extract 31 31) |v_skolemized_q#valueAsBitvector_3|) ((_ extract 30 23) |v_skolemized_q#valueAsBitvector_3|) ((_ extract 22 0) |v_skolemized_q#valueAsBitvector_3|)))) (and (fp.leq .cse0 ((_ to_fp 8 24) c_currentRoundingMode 100.0)) (fp.geq .cse0 ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 10.0))) (= (let ((.cse1 (let ((.cse2 (bvadd (_ bv1597463007 32) (bvneg (bvashr |v_skolemized_q#valueAsBitvector_3| (_ bv1 32)))))) (fp ((_ extract 31 31) .cse2) ((_ extract 30 23) .cse2) ((_ extract 22 0) .cse2))))) (fp.mul c_currentRoundingMode .cse1 (fp.sub c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 3.0 2.0)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 2.0)) .cse0) .cse1) .cse1)))) |c_ULTIMATE.start_InvSqrt_#res|)))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from false [2021-10-28 08:36:33,296 WARN L838 $PredicateComparison]: unable to prove that (exists ((|v_skolemized_q#valueAsBitvector_3| (_ BitVec 32))) (let ((.cse0 (fp ((_ extract 31 31) |v_skolemized_q#valueAsBitvector_3|) ((_ extract 30 23) |v_skolemized_q#valueAsBitvector_3|) ((_ extract 22 0) |v_skolemized_q#valueAsBitvector_3|)))) (and (fp.geq .cse0 ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 10.0))) (fp.leq .cse0 ((_ to_fp 8 24) roundNearestTiesToEven 100.0)) (let ((.cse3 (let ((.cse4 (let ((.cse5 (bvadd (_ bv1597463007 32) (bvneg (bvashr |v_skolemized_q#valueAsBitvector_3| (_ bv1 32)))))) (fp ((_ extract 31 31) .cse5) ((_ extract 30 23) .cse5) ((_ extract 22 0) .cse5))))) (fp.mul roundNearestTiesToEven .cse4 (fp.sub roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (/ 3.0 2.0)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 2.0)) .cse0) .cse4) .cse4)))))) (let ((.cse1 (fp.leq ((_ to_fp 11 53) roundNearestTiesToEven .cse3) ((_ to_fp 11 53) roundNearestTiesToEven 10.0))) (.cse2 (fp.geq .cse3 (_ +zero 8 24)))) (or (and (= c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv0 32)) (or (not .cse1) (not .cse2))) (and .cse1 .cse2 (= c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv1 32))))))))) is different from false [2021-10-28 08:36:35,327 WARN L860 $PredicateComparison]: unable to prove that (exists ((|v_skolemized_q#valueAsBitvector_3| (_ BitVec 32))) (let ((.cse0 (fp ((_ extract 31 31) |v_skolemized_q#valueAsBitvector_3|) ((_ extract 30 23) |v_skolemized_q#valueAsBitvector_3|) ((_ extract 22 0) |v_skolemized_q#valueAsBitvector_3|)))) (and (fp.geq .cse0 ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 10.0))) (fp.leq .cse0 ((_ to_fp 8 24) roundNearestTiesToEven 100.0)) (let ((.cse3 (let ((.cse4 (let ((.cse5 (bvadd (_ bv1597463007 32) (bvneg (bvashr |v_skolemized_q#valueAsBitvector_3| (_ bv1 32)))))) (fp ((_ extract 31 31) .cse5) ((_ extract 30 23) .cse5) ((_ extract 22 0) .cse5))))) (fp.mul roundNearestTiesToEven .cse4 (fp.sub roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (/ 3.0 2.0)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 2.0)) .cse0) .cse4) .cse4)))))) (let ((.cse1 (fp.leq ((_ to_fp 11 53) roundNearestTiesToEven .cse3) ((_ to_fp 11 53) roundNearestTiesToEven 10.0))) (.cse2 (fp.geq .cse3 (_ +zero 8 24)))) (or (and (= c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv0 32)) (or (not .cse1) (not .cse2))) (and .cse1 .cse2 (= c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv1 32))))))))) is different from true [2021-10-28 08:37:24,639 WARN L838 $PredicateComparison]: unable to prove that (exists ((|v_skolemized_q#valueAsBitvector_3| (_ BitVec 32))) (let ((.cse2 (fp ((_ extract 31 31) |v_skolemized_q#valueAsBitvector_3|) ((_ extract 30 23) |v_skolemized_q#valueAsBitvector_3|) ((_ extract 22 0) |v_skolemized_q#valueAsBitvector_3|)))) (and (let ((.cse0 (let ((.cse1 (let ((.cse3 (bvadd (_ bv1597463007 32) (bvneg (bvashr |v_skolemized_q#valueAsBitvector_3| (_ bv1 32)))))) (fp ((_ extract 31 31) .cse3) ((_ extract 30 23) .cse3) ((_ extract 22 0) .cse3))))) (fp.mul roundNearestTiesToEven .cse1 (fp.sub roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (/ 3.0 2.0)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 2.0)) .cse2) .cse1) .cse1)))))) (or (not (fp.leq ((_ to_fp 11 53) roundNearestTiesToEven .cse0) ((_ to_fp 11 53) roundNearestTiesToEven 10.0))) (not (fp.geq .cse0 (_ +zero 8 24))))) (fp.geq .cse2 ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 10.0))) (fp.leq .cse2 ((_ to_fp 8 24) roundNearestTiesToEven 100.0))))) is different from false [2021-10-28 08:37:26,667 WARN L860 $PredicateComparison]: unable to prove that (exists ((|v_skolemized_q#valueAsBitvector_3| (_ BitVec 32))) (let ((.cse2 (fp ((_ extract 31 31) |v_skolemized_q#valueAsBitvector_3|) ((_ extract 30 23) |v_skolemized_q#valueAsBitvector_3|) ((_ extract 22 0) |v_skolemized_q#valueAsBitvector_3|)))) (and (let ((.cse0 (let ((.cse1 (let ((.cse3 (bvadd (_ bv1597463007 32) (bvneg (bvashr |v_skolemized_q#valueAsBitvector_3| (_ bv1 32)))))) (fp ((_ extract 31 31) .cse3) ((_ extract 30 23) .cse3) ((_ extract 22 0) .cse3))))) (fp.mul roundNearestTiesToEven .cse1 (fp.sub roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (/ 3.0 2.0)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 2.0)) .cse2) .cse1) .cse1)))))) (or (not (fp.leq ((_ to_fp 11 53) roundNearestTiesToEven .cse0) ((_ to_fp 11 53) roundNearestTiesToEven 10.0))) (not (fp.geq .cse0 (_ +zero 8 24))))) (fp.geq .cse2 ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 10.0))) (fp.leq .cse2 ((_ to_fp 8 24) roundNearestTiesToEven 100.0))))) is different from true [2021-10-28 08:37:26,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:37:26,668 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 08:38:01,611 WARN L228 Executor]: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83c25937-be3b-4a4f-bb50-d068f2067f2f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) stderr output: (error "out of memory") [2021-10-28 08:38:01,612 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 08:38:01,612 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [707804499] [2021-10-28 08:38:01,612 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83c25937-be3b-4a4f-bb50-d068f2067f2f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") [2021-10-28 08:38:01,613 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [185716830] [2021-10-28 08:38:01,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:38:01,613 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-28 08:38:01,613 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83c25937-be3b-4a4f-bb50-d068f2067f2f/bin/uautomizer-UnR33cPsHg/cvc4 [2021-10-28 08:38:01,614 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83c25937-be3b-4a4f-bb50-d068f2067f2f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 101 [2021-10-28 08:38:01,614 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83c25937-be3b-4a4f-bb50-d068f2067f2f/bin/uautomizer-UnR33cPsHg/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-28 08:38:01,643 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83c25937-be3b-4a4f-bb50-d068f2067f2f/bin/uautomizer-UnR33cPsHg/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2021-10-28 08:38:02,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:38:02,458 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-28 08:38:02,458 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.MonolithicImplicationChecker@18a2f352 [2021-10-28 08:38:02,459 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [740103273] [2021-10-28 08:38:02,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:38:02,459 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 08:38:02,459 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83c25937-be3b-4a4f-bb50-d068f2067f2f/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:38:02,463 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83c25937-be3b-4a4f-bb50-d068f2067f2f/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 08:38:02,464 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83c25937-be3b-4a4f-bb50-d068f2067f2f/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-10-28 08:38:43,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:38:43,219 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-28 08:38:43,220 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.MonolithicImplicationChecker@18a2f352 [2021-10-28 08:38:43,220 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:38:43,220 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2021-10-28 08:38:43,220 ERROR L172 FreeRefinementEngine]: Strategy WOLF failed to provide any proof altough trace is infeasible [2021-10-28 08:38:43,220 INFO L627 BasicCegarLoop]: Counterexample might be feasible [2021-10-28 08:38:43,226 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 08:38:43,266 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83c25937-be3b-4a4f-bb50-d068f2067f2f/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-10-28 08:38:43,439 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83c25937-be3b-4a4f-bb50-d068f2067f2f/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-10-28 08:38:43,638 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83c25937-be3b-4a4f-bb50-d068f2067f2f/bin/uautomizer-UnR33cPsHg/cvc4 --incremental --print-success --lang smt (4)] Ended with exit code 0 [2021-10-28 08:38:43,829 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83c25937-be3b-4a4f-bb50-d068f2067f2f/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83c25937-be3b-4a4f-bb50-d068f2067f2f/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83c25937-be3b-4a4f-bb50-d068f2067f2f/bin/uautomizer-UnR33cPsHg/cvc4 --incremental --print-success --lang smt [2021-10-28 08:38:43,832 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1] [2021-10-28 08:38:43,834 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-28 08:38:43,846 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 08:38:43 BoogieIcfgContainer [2021-10-28 08:38:43,846 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-28 08:38:43,847 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 08:38:43,847 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 08:38:43,847 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 08:38:43,848 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 08:34:35" (3/4) ... [2021-10-28 08:38:43,863 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-28 08:38:43,864 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 08:38:43,867 INFO L168 Benchmark]: Toolchain (without parser) took 251727.12 ms. Allocated memory was 60.8 MB in the beginning and 83.9 MB in the end (delta: 23.1 MB). Free memory was 40.7 MB in the beginning and 61.5 MB in the end (delta: -20.7 MB). Peak memory consumption was 2.0 MB. Max. memory is 16.1 GB. [2021-10-28 08:38:43,872 INFO L168 Benchmark]: CDTParser took 0.34 ms. Allocated memory is still 60.8 MB. Free memory is still 42.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 08:38:43,874 INFO L168 Benchmark]: CACSL2BoogieTranslator took 344.44 ms. Allocated memory is still 60.8 MB. Free memory was 40.6 MB in the beginning and 44.7 MB in the end (delta: -4.2 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-10-28 08:38:43,874 INFO L168 Benchmark]: Boogie Procedure Inliner took 68.79 ms. Allocated memory is still 60.8 MB. Free memory was 44.7 MB in the beginning and 43.1 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 08:38:43,876 INFO L168 Benchmark]: Boogie Preprocessor took 48.25 ms. Allocated memory is still 60.8 MB. Free memory was 43.1 MB in the beginning and 41.8 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 08:38:43,876 INFO L168 Benchmark]: RCFGBuilder took 2441.80 ms. Allocated memory is still 60.8 MB. Free memory was 41.8 MB in the beginning and 31.1 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-28 08:38:43,877 INFO L168 Benchmark]: TraceAbstraction took 248799.26 ms. Allocated memory was 60.8 MB in the beginning and 83.9 MB in the end (delta: 23.1 MB). Free memory was 30.7 MB in the beginning and 62.1 MB in the end (delta: -31.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 08:38:43,884 INFO L168 Benchmark]: Witness Printer took 16.94 ms. Allocated memory is still 83.9 MB. Free memory was 62.1 MB in the beginning and 61.5 MB in the end (delta: 672.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 08:38:43,893 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34 ms. Allocated memory is still 60.8 MB. Free memory is still 42.0 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 344.44 ms. Allocated memory is still 60.8 MB. Free memory was 40.6 MB in the beginning and 44.7 MB in the end (delta: -4.2 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 68.79 ms. Allocated memory is still 60.8 MB. Free memory was 44.7 MB in the beginning and 43.1 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 48.25 ms. Allocated memory is still 60.8 MB. Free memory was 43.1 MB in the beginning and 41.8 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 2441.80 ms. Allocated memory is still 60.8 MB. Free memory was 41.8 MB in the beginning and 31.1 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 248799.26 ms. Allocated memory was 60.8 MB in the beginning and 83.9 MB in the end (delta: 23.1 MB). Free memory was 30.7 MB in the beginning and 62.1 MB in the end (delta: -31.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 16.94 ms. Allocated memory is still 83.9 MB. Free memory was 62.1 MB in the beginning and 61.5 MB in the end (delta: 672.7 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, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 13]: 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: [L45] float a,r; [L47] a = __VERIFIER_nondet_float() [L11] COND FALSE !(!cond) [L22] float xhalf = 0.5f*x; [L23] union float_int i; [L24] i.f = x [L25] EXPR i.i [L25] i.i = 0x5f3759df - (i.i>>1) [L26] EXPR i.f [L26] x = i.f [L27] x = x*(1.5f-xhalf*x*x) [L28] return x; [L28] return x; [L50] r = InvSqrt(a) [L13] COND TRUE !(cond) [L13] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 12 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 248.7s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 11 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=12occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 2.7s SatisfiabilityAnalysisTime, 203.2s InterpolantComputationTime, 14 NumberOfCodeBlocks, 14 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 18 ConstructedInterpolants, 3 QuantifiedInterpolants, 805 SizeOfPredicates, 12 NumberOfNonLiveVariables, 86 ConjunctsInSsa, 16 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...