./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/double_req_bl_0621a.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 47ea0209 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_781c9bea-8b96-4176-b819-f0db75827a95/bin/uautomizer-AkOaLMaTGY/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_781c9bea-8b96-4176-b819-f0db75827a95/bin/uautomizer-AkOaLMaTGY/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_781c9bea-8b96-4176-b819-f0db75827a95/bin/uautomizer-AkOaLMaTGY/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_781c9bea-8b96-4176-b819-f0db75827a95/bin/uautomizer-AkOaLMaTGY/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_0621a.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_781c9bea-8b96-4176-b819-f0db75827a95/bin/uautomizer-AkOaLMaTGY/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_781c9bea-8b96-4176-b819-f0db75827a95/bin/uautomizer-AkOaLMaTGY --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 94c7028b230390dc4abdbced13b8b776e14e782aa364d41009dee4258cbf27c9 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 08:28:36,522 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 08:28:36,526 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 08:28:36,597 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 08:28:36,598 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 08:28:36,604 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 08:28:36,606 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 08:28:36,612 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 08:28:36,616 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 08:28:36,623 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 08:28:36,625 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 08:28:36,628 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 08:28:36,629 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 08:28:36,632 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 08:28:36,636 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 08:28:36,642 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 08:28:36,645 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 08:28:36,647 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 08:28:36,654 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 08:28:36,666 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 08:28:36,669 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 08:28:36,671 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 08:28:36,676 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 08:28:36,677 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 08:28:36,691 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 08:28:36,691 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 08:28:36,692 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 08:28:36,695 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 08:28:36,696 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 08:28:36,698 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 08:28:36,699 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 08:28:36,701 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 08:28:36,704 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 08:28:36,706 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 08:28:36,708 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 08:28:36,709 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 08:28:36,711 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 08:28:36,711 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 08:28:36,712 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 08:28:36,713 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 08:28:36,715 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 08:28:36,716 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_781c9bea-8b96-4176-b819-f0db75827a95/bin/uautomizer-AkOaLMaTGY/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-07 08:28:36,774 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 08:28:36,775 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 08:28:36,776 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-07 08:28:36,776 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-07 08:28:36,779 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-07 08:28:36,780 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-07 08:28:36,780 INFO L138 SettingsManager]: * Use SBE=true [2021-11-07 08:28:36,781 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 08:28:36,781 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 08:28:36,781 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 08:28:36,783 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 08:28:36,783 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 08:28:36,784 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 08:28:36,784 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 08:28:36,784 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 08:28:36,785 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 08:28:36,785 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 08:28:36,785 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 08:28:36,785 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 08:28:36,786 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 08:28:36,786 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 08:28:36,787 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 08:28:36,787 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 08:28:36,787 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 08:28:36,788 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 08:28:36,788 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 08:28:36,788 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-07 08:28:36,789 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 08:28:36,789 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-07 08:28:36,789 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-07 08:28:36,790 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 08:28:36,790 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 08:28:36,790 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_781c9bea-8b96-4176-b819-f0db75827a95/bin/uautomizer-AkOaLMaTGY/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_781c9bea-8b96-4176-b819-f0db75827a95/bin/uautomizer-AkOaLMaTGY Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 94c7028b230390dc4abdbced13b8b776e14e782aa364d41009dee4258cbf27c9 [2021-11-07 08:28:37,157 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 08:28:37,187 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 08:28:37,191 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 08:28:37,192 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 08:28:37,193 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 08:28:37,194 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_781c9bea-8b96-4176-b819-f0db75827a95/bin/uautomizer-AkOaLMaTGY/../../sv-benchmarks/c/float-newlib/double_req_bl_0621a.c [2021-11-07 08:28:37,294 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_781c9bea-8b96-4176-b819-f0db75827a95/bin/uautomizer-AkOaLMaTGY/data/f39955e8b/47b65c500e124cdb94f51e45f4569579/FLAG24923ea69 [2021-11-07 08:28:37,852 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 08:28:37,853 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_781c9bea-8b96-4176-b819-f0db75827a95/sv-benchmarks/c/float-newlib/double_req_bl_0621a.c [2021-11-07 08:28:37,863 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_781c9bea-8b96-4176-b819-f0db75827a95/bin/uautomizer-AkOaLMaTGY/data/f39955e8b/47b65c500e124cdb94f51e45f4569579/FLAG24923ea69 [2021-11-07 08:28:38,224 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_781c9bea-8b96-4176-b819-f0db75827a95/bin/uautomizer-AkOaLMaTGY/data/f39955e8b/47b65c500e124cdb94f51e45f4569579 [2021-11-07 08:28:38,227 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 08:28:38,229 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 08:28:38,231 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 08:28:38,232 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 08:28:38,236 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 08:28:38,237 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 08:28:38" (1/1) ... [2021-11-07 08:28:38,239 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@40408215 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:28:38, skipping insertion in model container [2021-11-07 08:28:38,239 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 08:28:38" (1/1) ... [2021-11-07 08:28:38,263 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 08:28:38,306 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 08:28:38,580 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_781c9bea-8b96-4176-b819-f0db75827a95/sv-benchmarks/c/float-newlib/double_req_bl_0621a.c[3711,3724] [2021-11-07 08:28:38,584 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 08:28:38,596 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 08:28:38,641 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_781c9bea-8b96-4176-b819-f0db75827a95/sv-benchmarks/c/float-newlib/double_req_bl_0621a.c[3711,3724] [2021-11-07 08:28:38,642 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 08:28:38,664 INFO L208 MainTranslator]: Completed translation [2021-11-07 08:28:38,664 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:28:38 WrapperNode [2021-11-07 08:28:38,665 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 08:28:38,666 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 08:28:38,666 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 08:28:38,666 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 08:28:38,674 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:28:38" (1/1) ... [2021-11-07 08:28:38,686 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:28:38" (1/1) ... [2021-11-07 08:28:38,726 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 08:28:38,727 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 08:28:38,728 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 08:28:38,728 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 08:28:38,739 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:28:38" (1/1) ... [2021-11-07 08:28:38,739 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:28:38" (1/1) ... [2021-11-07 08:28:38,745 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:28:38" (1/1) ... [2021-11-07 08:28:38,745 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:28:38" (1/1) ... [2021-11-07 08:28:38,762 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:28:38" (1/1) ... [2021-11-07 08:28:38,769 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:28:38" (1/1) ... [2021-11-07 08:28:38,772 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:28:38" (1/1) ... [2021-11-07 08:28:38,776 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 08:28:38,778 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 08:28:38,778 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 08:28:38,778 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 08:28:38,780 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:28:38" (1/1) ... [2021-11-07 08:28:38,791 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 08:28:38,809 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_781c9bea-8b96-4176-b819-f0db75827a95/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:28:38,831 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_781c9bea-8b96-4176-b819-f0db75827a95/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 08:28:38,849 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_781c9bea-8b96-4176-b819-f0db75827a95/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 08:28:38,900 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-07 08:28:38,900 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 08:28:38,901 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-11-07 08:28:38,901 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-07 08:28:38,901 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-11-07 08:28:38,902 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 08:28:38,902 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 08:28:38,902 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-07 08:28:38,902 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2021-11-07 08:28:38,903 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 08:28:39,517 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 08:28:39,518 INFO L299 CfgBuilder]: Removed 16 assume(true) statements. [2021-11-07 08:28:39,520 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 08:28:39 BoogieIcfgContainer [2021-11-07 08:28:39,521 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 08:28:39,523 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 08:28:39,523 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 08:28:39,528 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 08:28:39,528 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 08:28:38" (1/3) ... [2021-11-07 08:28:39,529 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2910f08b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 08:28:39, skipping insertion in model container [2021-11-07 08:28:39,529 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:28:38" (2/3) ... [2021-11-07 08:28:39,530 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2910f08b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 08:28:39, skipping insertion in model container [2021-11-07 08:28:39,530 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 08:28:39" (3/3) ... [2021-11-07 08:28:39,532 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_0621a.c [2021-11-07 08:28:39,539 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 08:28:39,539 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-07 08:28:39,625 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 08:28:39,633 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 [2021-11-07 08:28:39,634 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-07 08:28:39,654 INFO L276 IsEmpty]: Start isEmpty. Operand has 34 states, 32 states have (on average 1.65625) internal successors, (53), 33 states have internal predecessors, (53), 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) [2021-11-07 08:28:39,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-07 08:28:39,665 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:28:39,666 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:28:39,667 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 08:28:39,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:28:39,677 INFO L85 PathProgramCache]: Analyzing trace with hash 1035664421, now seen corresponding path program 1 times [2021-11-07 08:28:39,686 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:28:39,686 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557797231] [2021-11-07 08:28:39,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:28:39,687 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:28:39,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:28:39,896 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:28:39,897 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:28:39,897 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1557797231] [2021-11-07 08:28:39,898 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1557797231] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:28:39,899 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:28:39,899 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-07 08:28:39,901 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693453993] [2021-11-07 08:28:39,907 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-07 08:28:39,909 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:28:39,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-07 08:28:39,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 08:28:39,932 INFO L87 Difference]: Start difference. First operand has 34 states, 32 states have (on average 1.65625) internal successors, (53), 33 states have internal predecessors, (53), 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 5.0) internal successors, (10), 2 states have internal predecessors, (10), 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) [2021-11-07 08:28:39,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:28:39,963 INFO L93 Difference]: Finished difference Result 66 states and 104 transitions. [2021-11-07 08:28:39,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-07 08:28:39,966 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 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 10 [2021-11-07 08:28:39,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:28:39,981 INFO L225 Difference]: With dead ends: 66 [2021-11-07 08:28:39,981 INFO L226 Difference]: Without dead ends: 31 [2021-11-07 08:28:39,986 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 [2021-11-07 08:28:40,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2021-11-07 08:28:40,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2021-11-07 08:28:40,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 30 states have (on average 1.3666666666666667) internal successors, (41), 30 states have internal predecessors, (41), 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) [2021-11-07 08:28:40,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 41 transitions. [2021-11-07 08:28:40,041 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 41 transitions. Word has length 10 [2021-11-07 08:28:40,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:28:40,042 INFO L470 AbstractCegarLoop]: Abstraction has 31 states and 41 transitions. [2021-11-07 08:28:40,043 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 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) [2021-11-07 08:28:40,043 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 41 transitions. [2021-11-07 08:28:40,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-07 08:28:40,045 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:28:40,045 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:28:40,045 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-07 08:28:40,046 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 08:28:40,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:28:40,051 INFO L85 PathProgramCache]: Analyzing trace with hash -1843594333, now seen corresponding path program 1 times [2021-11-07 08:28:40,052 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:28:40,052 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756580937] [2021-11-07 08:28:40,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:28:40,053 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:28:40,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-07 08:28:40,253 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-07 08:28:40,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-07 08:28:40,442 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-07 08:28:40,443 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-11-07 08:28:40,445 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-11-07 08:28:40,447 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-07 08:28:40,452 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1] [2021-11-07 08:28:40,455 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-07 08:28:40,528 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 08:28:40 BoogieIcfgContainer [2021-11-07 08:28:40,528 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-07 08:28:40,537 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-07 08:28:40,537 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-07 08:28:40,538 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-07 08:28:40,538 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 08:28:39" (3/4) ... [2021-11-07 08:28:40,542 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-07 08:28:40,543 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-07 08:28:40,547 INFO L168 Benchmark]: Toolchain (without parser) took 2316.34 ms. Allocated memory was 79.7 MB in the beginning and 102.8 MB in the end (delta: 23.1 MB). Free memory was 43.3 MB in the beginning and 48.4 MB in the end (delta: -5.1 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. [2021-11-07 08:28:40,548 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 79.7 MB. Free memory was 59.9 MB in the beginning and 59.8 MB in the end (delta: 63.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 08:28:40,552 INFO L168 Benchmark]: CACSL2BoogieTranslator took 433.81 ms. Allocated memory was 79.7 MB in the beginning and 102.8 MB in the end (delta: 23.1 MB). Free memory was 43.1 MB in the beginning and 75.9 MB in the end (delta: -32.8 MB). Peak memory consumption was 5.8 MB. Max. memory is 16.1 GB. [2021-11-07 08:28:40,553 INFO L168 Benchmark]: Boogie Procedure Inliner took 60.90 ms. Allocated memory is still 102.8 MB. Free memory was 75.9 MB in the beginning and 73.6 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-07 08:28:40,559 INFO L168 Benchmark]: Boogie Preprocessor took 49.37 ms. Allocated memory is still 102.8 MB. Free memory was 73.6 MB in the beginning and 71.8 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-07 08:28:40,560 INFO L168 Benchmark]: RCFGBuilder took 743.15 ms. Allocated memory is still 102.8 MB. Free memory was 71.8 MB in the beginning and 56.7 MB in the end (delta: 15.1 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-11-07 08:28:40,561 INFO L168 Benchmark]: TraceAbstraction took 1005.25 ms. Allocated memory is still 102.8 MB. Free memory was 56.4 MB in the beginning and 48.4 MB in the end (delta: 8.1 MB). Peak memory consumption was 10.8 MB. Max. memory is 16.1 GB. [2021-11-07 08:28:40,561 INFO L168 Benchmark]: Witness Printer took 7.38 ms. Allocated memory is still 102.8 MB. Free memory is still 48.4 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 08:28:40,572 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 79.7 MB. Free memory was 59.9 MB in the beginning and 59.8 MB in the end (delta: 63.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 433.81 ms. Allocated memory was 79.7 MB in the beginning and 102.8 MB in the end (delta: 23.1 MB). Free memory was 43.1 MB in the beginning and 75.9 MB in the end (delta: -32.8 MB). Peak memory consumption was 5.8 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 60.90 ms. Allocated memory is still 102.8 MB. Free memory was 75.9 MB in the beginning and 73.6 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 49.37 ms. Allocated memory is still 102.8 MB. Free memory was 73.6 MB in the beginning and 71.8 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 743.15 ms. Allocated memory is still 102.8 MB. Free memory was 71.8 MB in the beginning and 56.7 MB in the end (delta: 15.1 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1005.25 ms. Allocated memory is still 102.8 MB. Free memory was 56.4 MB in the beginning and 48.4 MB in the end (delta: 8.1 MB). Peak memory consumption was 10.8 MB. Max. memory is 16.1 GB. * Witness Printer took 7.38 ms. Allocated memory is still 102.8 MB. Free memory is still 48.4 MB. 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: 147]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someUnaryDOUBLEoperation at line 54, overapproximation of someBinaryArithmeticDOUBLEoperation at line 84, overapproximation of bitwiseAnd at line 75, overapproximation of someBinaryDOUBLEComparisonOperation at line 146. Possible FailurePath: [L39-L44] static const double atanhi_atan[] = { 4.63647609000806093515e-01, 7.85398163397448278999e-01, 9.82793723247329054082e-01, 1.57079632679489655800e+00, }; [L46-L51] static const double atanlo_atan[] = { 2.26987774529616870924e-17, 3.06161699786838301793e-17, 1.39033110312309984516e-17, 6.12323399573676603587e-17, }; [L53-L60] static const double aT_atan[] = { 3.33333333333329318027e-01, -1.99999999998764832476e-01, 1.42857142725034663711e-01, -1.11111104054623557880e-01, 9.09088713343650656196e-02, -7.69187620504482999495e-02, 6.66107313738753120669e-02, -5.83357013379057348645e-02, 4.97687799461593236017e-02, -3.65315727442169155270e-02, 1.62858201153657823623e-02, }; [L62-L64] static const double one_atan = 1.0, pi_o_4 = 7.8539816339744827900E-01, pi_o_2 = 1.5707963267948965580E+00, pi = 3.1415926535897931160E+00, huge_atan = 1.0e300; VAL [aT_atan={6:0}, atanhi_atan={9:0}, atanlo_atan={7:0}, huge_atan=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, one_atan=1, pi=785398163397448279/250000000000000000, pi_o_2=785398163397448279/500000000000000000, pi_o_4=785398163397448279/1000000000000000000] [L143] double x = 1.0 / 0.0; [L67] double w, s1, s2, z; [L68] __int32_t ix, hx, id; VAL [aT_atan={6:0}, atanhi_atan={9:0}, atanlo_atan={7:0}, huge_atan=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, one_atan=1, pi=785398163397448279/250000000000000000, pi_o_2=785398163397448279/500000000000000000, pi_o_4=785398163397448279/1000000000000000000] [L71] ieee_double_shape_type gh_u; [L72] gh_u.value = (x) [L73] EXPR gh_u.parts.msw [L73] (hx) = gh_u.parts.msw [L75] ix = hx & 0x7fffffff VAL [aT_atan={6:0}, atanhi_atan={9:0}, atanlo_atan={7:0}, huge_atan=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, one_atan=1, pi=785398163397448279/250000000000000000, pi_o_2=785398163397448279/500000000000000000, pi_o_4=785398163397448279/1000000000000000000] [L76] COND TRUE ix >= 0x44100000 [L77] __uint32_t low; VAL [aT_atan={6:0}, atanhi_atan={9:0}, atanlo_atan={7:0}, huge_atan=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, one_atan=1, pi=785398163397448279/250000000000000000, pi_o_2=785398163397448279/500000000000000000, pi_o_4=785398163397448279/1000000000000000000] [L79] ieee_double_shape_type gl_u; [L80] gl_u.value = (x) [L81] EXPR gl_u.parts.lsw [L81] (low) = gl_u.parts.lsw [L83] COND TRUE ix > 0x7ff00000 || (ix == 0x7ff00000 && (low != 0)) [L84] return x + x; VAL [aT_atan={6:0}, atanhi_atan={9:0}, atanlo_atan={7:0}, huge_atan=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, one_atan=1, pi=785398163397448279/250000000000000000, pi_o_2=785398163397448279/500000000000000000, pi_o_4=785398163397448279/1000000000000000000] [L144] double res = atan_double(x); [L146] COND TRUE res != pi_o_2 VAL [aT_atan={6:0}, atanhi_atan={9:0}, atanlo_atan={7:0}, huge_atan=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, one_atan=1, pi=785398163397448279/250000000000000000, pi_o_2=785398163397448279/500000000000000000, pi_o_4=785398163397448279/1000000000000000000] [L147] reach_error() VAL [aT_atan={6:0}, atanhi_atan={9:0}, atanlo_atan={7:0}, huge_atan=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, one_atan=1, pi=785398163397448279/250000000000000000, pi_o_2=785398163397448279/500000000000000000, pi_o_4=785398163397448279/1000000000000000000] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 34 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.8s, 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: 44 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=34occurred 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, 0.2s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 22 NumberOfCodeBlocks, 22 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 9 ConstructedInterpolants, 0 QuantifiedInterpolants, 9 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 [2021-11-07 08:28:40,648 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_781c9bea-8b96-4176-b819-f0db75827a95/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_781c9bea-8b96-4176-b819-f0db75827a95/bin/uautomizer-AkOaLMaTGY/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_781c9bea-8b96-4176-b819-f0db75827a95/bin/uautomizer-AkOaLMaTGY/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_781c9bea-8b96-4176-b819-f0db75827a95/bin/uautomizer-AkOaLMaTGY/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_781c9bea-8b96-4176-b819-f0db75827a95/bin/uautomizer-AkOaLMaTGY/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_0621a.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_781c9bea-8b96-4176-b819-f0db75827a95/bin/uautomizer-AkOaLMaTGY/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_781c9bea-8b96-4176-b819-f0db75827a95/bin/uautomizer-AkOaLMaTGY --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 94c7028b230390dc4abdbced13b8b776e14e782aa364d41009dee4258cbf27c9 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 08:28:43,670 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 08:28:43,672 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 08:28:43,730 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 08:28:43,730 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 08:28:43,732 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 08:28:43,735 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 08:28:43,739 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 08:28:43,742 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 08:28:43,743 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 08:28:43,745 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 08:28:43,747 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 08:28:43,748 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 08:28:43,752 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 08:28:43,755 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 08:28:43,764 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 08:28:43,766 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 08:28:43,772 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 08:28:43,778 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 08:28:43,785 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 08:28:43,793 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 08:28:43,795 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 08:28:43,805 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 08:28:43,806 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 08:28:43,811 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 08:28:43,818 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 08:28:43,818 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 08:28:43,820 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 08:28:43,821 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 08:28:43,824 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 08:28:43,826 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 08:28:43,827 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 08:28:43,830 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 08:28:43,831 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 08:28:43,837 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 08:28:43,839 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 08:28:43,841 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 08:28:43,841 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 08:28:43,842 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 08:28:43,843 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 08:28:43,846 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 08:28:43,847 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_781c9bea-8b96-4176-b819-f0db75827a95/bin/uautomizer-AkOaLMaTGY/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-11-07 08:28:43,923 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 08:28:43,923 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 08:28:43,924 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-07 08:28:43,924 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-07 08:28:43,926 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-07 08:28:43,926 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-07 08:28:43,926 INFO L138 SettingsManager]: * Use SBE=true [2021-11-07 08:28:43,927 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 08:28:43,927 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 08:28:43,927 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 08:28:43,928 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 08:28:43,928 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 08:28:43,928 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 08:28:43,929 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 08:28:43,929 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-07 08:28:43,929 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-07 08:28:43,930 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 08:28:43,930 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 08:28:43,930 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 08:28:43,931 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 08:28:43,931 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 08:28:43,931 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 08:28:43,932 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 08:28:43,932 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 08:28:43,932 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 08:28:43,933 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 08:28:43,933 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 08:28:43,933 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-11-07 08:28:43,934 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-07 08:28:43,934 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-07 08:28:43,934 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-07 08:28:43,935 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 08:28:43,935 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 08:28:43,935 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 08:28:43,936 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_781c9bea-8b96-4176-b819-f0db75827a95/bin/uautomizer-AkOaLMaTGY/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_781c9bea-8b96-4176-b819-f0db75827a95/bin/uautomizer-AkOaLMaTGY Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 94c7028b230390dc4abdbced13b8b776e14e782aa364d41009dee4258cbf27c9 [2021-11-07 08:28:44,411 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 08:28:44,456 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 08:28:44,460 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 08:28:44,461 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 08:28:44,465 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 08:28:44,466 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_781c9bea-8b96-4176-b819-f0db75827a95/bin/uautomizer-AkOaLMaTGY/../../sv-benchmarks/c/float-newlib/double_req_bl_0621a.c [2021-11-07 08:28:44,573 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_781c9bea-8b96-4176-b819-f0db75827a95/bin/uautomizer-AkOaLMaTGY/data/09a12a5f5/e3117ef4f7494d0c93910942067945bf/FLAG57907c6c8 [2021-11-07 08:28:45,277 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 08:28:45,278 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_781c9bea-8b96-4176-b819-f0db75827a95/sv-benchmarks/c/float-newlib/double_req_bl_0621a.c [2021-11-07 08:28:45,288 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_781c9bea-8b96-4176-b819-f0db75827a95/bin/uautomizer-AkOaLMaTGY/data/09a12a5f5/e3117ef4f7494d0c93910942067945bf/FLAG57907c6c8 [2021-11-07 08:28:45,622 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_781c9bea-8b96-4176-b819-f0db75827a95/bin/uautomizer-AkOaLMaTGY/data/09a12a5f5/e3117ef4f7494d0c93910942067945bf [2021-11-07 08:28:45,625 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 08:28:45,627 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 08:28:45,630 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 08:28:45,630 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 08:28:45,635 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 08:28:45,636 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 08:28:45" (1/1) ... [2021-11-07 08:28:45,637 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3bb43ab5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:28:45, skipping insertion in model container [2021-11-07 08:28:45,638 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 08:28:45" (1/1) ... [2021-11-07 08:28:45,647 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 08:28:45,675 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 08:28:45,942 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_781c9bea-8b96-4176-b819-f0db75827a95/sv-benchmarks/c/float-newlib/double_req_bl_0621a.c[3711,3724] [2021-11-07 08:28:45,946 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 08:28:45,980 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 08:28:46,082 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_781c9bea-8b96-4176-b819-f0db75827a95/sv-benchmarks/c/float-newlib/double_req_bl_0621a.c[3711,3724] [2021-11-07 08:28:46,085 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 08:28:46,127 INFO L208 MainTranslator]: Completed translation [2021-11-07 08:28:46,128 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:28:46 WrapperNode [2021-11-07 08:28:46,129 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 08:28:46,131 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 08:28:46,131 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 08:28:46,131 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 08:28:46,141 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:28:46" (1/1) ... [2021-11-07 08:28:46,173 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:28:46" (1/1) ... [2021-11-07 08:28:46,220 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 08:28:46,221 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 08:28:46,221 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 08:28:46,221 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 08:28:46,236 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:28:46" (1/1) ... [2021-11-07 08:28:46,236 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:28:46" (1/1) ... [2021-11-07 08:28:46,264 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:28:46" (1/1) ... [2021-11-07 08:28:46,264 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:28:46" (1/1) ... [2021-11-07 08:28:46,305 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:28:46" (1/1) ... [2021-11-07 08:28:46,311 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:28:46" (1/1) ... [2021-11-07 08:28:46,328 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:28:46" (1/1) ... [2021-11-07 08:28:46,333 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 08:28:46,335 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 08:28:46,335 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 08:28:46,335 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 08:28:46,336 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:28:46" (1/1) ... [2021-11-07 08:28:46,357 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 08:28:46,372 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_781c9bea-8b96-4176-b819-f0db75827a95/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:28:46,391 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_781c9bea-8b96-4176-b819-f0db75827a95/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 08:28:46,413 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_781c9bea-8b96-4176-b819-f0db75827a95/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 08:28:46,461 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2021-11-07 08:28:46,461 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2021-11-07 08:28:46,461 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-07 08:28:46,462 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 08:28:46,462 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8 [2021-11-07 08:28:46,462 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-07 08:28:46,462 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 08:28:46,465 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 08:28:46,465 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-07 08:28:46,465 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 08:29:04,008 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 08:29:04,009 INFO L299 CfgBuilder]: Removed 16 assume(true) statements. [2021-11-07 08:29:04,012 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 08:29:04 BoogieIcfgContainer [2021-11-07 08:29:04,012 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 08:29:04,015 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 08:29:04,015 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 08:29:04,020 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 08:29:04,020 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 08:28:45" (1/3) ... [2021-11-07 08:29:04,021 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63dc02d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 08:29:04, skipping insertion in model container [2021-11-07 08:29:04,022 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:28:46" (2/3) ... [2021-11-07 08:29:04,023 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63dc02d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 08:29:04, skipping insertion in model container [2021-11-07 08:29:04,023 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 08:29:04" (3/3) ... [2021-11-07 08:29:04,025 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_0621a.c [2021-11-07 08:29:04,033 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 08:29:04,033 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-07 08:29:04,137 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 08:29:04,158 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 [2021-11-07 08:29:04,158 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-07 08:29:04,201 INFO L276 IsEmpty]: Start isEmpty. Operand has 34 states, 32 states have (on average 1.65625) internal successors, (53), 33 states have internal predecessors, (53), 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) [2021-11-07 08:29:04,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-07 08:29:04,214 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:29:04,215 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:29:04,216 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 08:29:04,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:29:04,224 INFO L85 PathProgramCache]: Analyzing trace with hash 1035664421, now seen corresponding path program 1 times [2021-11-07 08:29:04,245 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 08:29:04,246 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [434303290] [2021-11-07 08:29:04,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:29:04,247 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 08:29:04,248 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_781c9bea-8b96-4176-b819-f0db75827a95/bin/uautomizer-AkOaLMaTGY/mathsat [2021-11-07 08:29:04,255 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_781c9bea-8b96-4176-b819-f0db75827a95/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 08:29:04,261 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_781c9bea-8b96-4176-b819-f0db75827a95/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-07 08:29:04,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:29:04,752 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-07 08:29:04,757 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:29:05,037 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:29:05,037 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 08:29:05,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:29:05,246 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-07 08:29:05,246 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [434303290] [2021-11-07 08:29:05,247 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [434303290] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 08:29:05,247 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:29:05,248 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-07 08:29:05,250 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669988870] [2021-11-07 08:29:05,256 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-07 08:29:05,256 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-07 08:29:05,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-07 08:29:05,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 08:29:05,277 INFO L87 Difference]: Start difference. First operand has 34 states, 32 states have (on average 1.65625) internal successors, (53), 33 states have internal predecessors, (53), 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 5.0) internal successors, (10), 2 states have internal predecessors, (10), 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) [2021-11-07 08:29:05,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:29:05,307 INFO L93 Difference]: Finished difference Result 66 states and 104 transitions. [2021-11-07 08:29:05,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-07 08:29:05,308 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 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 10 [2021-11-07 08:29:05,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:29:05,319 INFO L225 Difference]: With dead ends: 66 [2021-11-07 08:29:05,319 INFO L226 Difference]: Without dead ends: 31 [2021-11-07 08:29:05,323 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 08:29:05,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2021-11-07 08:29:05,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2021-11-07 08:29:05,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 30 states have (on average 1.3666666666666667) internal successors, (41), 30 states have internal predecessors, (41), 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) [2021-11-07 08:29:05,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 41 transitions. [2021-11-07 08:29:05,363 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 41 transitions. Word has length 10 [2021-11-07 08:29:05,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:29:05,364 INFO L470 AbstractCegarLoop]: Abstraction has 31 states and 41 transitions. [2021-11-07 08:29:05,365 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 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) [2021-11-07 08:29:05,371 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 41 transitions. [2021-11-07 08:29:05,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-07 08:29:05,372 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:29:05,372 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:29:05,405 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_781c9bea-8b96-4176-b819-f0db75827a95/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-07 08:29:05,593 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_781c9bea-8b96-4176-b819-f0db75827a95/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 [2021-11-07 08:29:05,593 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 08:29:05,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:29:05,595 INFO L85 PathProgramCache]: Analyzing trace with hash -1843594333, now seen corresponding path program 1 times [2021-11-07 08:29:05,596 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 08:29:05,597 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [836048546] [2021-11-07 08:29:05,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:29:05,597 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 08:29:05,597 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_781c9bea-8b96-4176-b819-f0db75827a95/bin/uautomizer-AkOaLMaTGY/mathsat [2021-11-07 08:29:05,599 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_781c9bea-8b96-4176-b819-f0db75827a95/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 08:29:05,610 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_781c9bea-8b96-4176-b819-f0db75827a95/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-07 08:29:06,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:29:06,242 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-07 08:29:06,245 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:29:06,558 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 33 [2021-11-07 08:29:10,207 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 08:29:10,208 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 70 treesize of output 70 [2021-11-07 08:29:10,592 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 14 [2021-11-07 08:29:12,289 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:29:12,290 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 08:29:16,142 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 08:29:16,143 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 65 treesize of output 70 [2021-11-07 08:29:16,324 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 08:29:16,325 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 70 treesize of output 72 [2021-11-07 08:29:16,556 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-11-07 08:29:19,043 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:29:19,044 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-07 08:29:19,044 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [836048546] [2021-11-07 08:29:19,044 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [836048546] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 08:29:19,045 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:29:19,045 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2021-11-07 08:29:19,045 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95826597] [2021-11-07 08:29:19,047 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-07 08:29:19,047 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-07 08:29:19,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-07 08:29:19,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2021-11-07 08:29:19,049 INFO L87 Difference]: Start difference. First operand 31 states and 41 transitions. Second operand has 10 states, 10 states have (on average 2.0) internal successors, (20), 10 states have internal predecessors, (20), 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) [2021-11-07 08:29:20,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:29:20,944 INFO L93 Difference]: Finished difference Result 35 states and 44 transitions. [2021-11-07 08:29:20,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 08:29:20,954 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.0) internal successors, (20), 10 states have internal predecessors, (20), 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 12 [2021-11-07 08:29:20,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:29:20,956 INFO L225 Difference]: With dead ends: 35 [2021-11-07 08:29:20,956 INFO L226 Difference]: Without dead ends: 14 [2021-11-07 08:29:20,958 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2021-11-07 08:29:20,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2021-11-07 08:29:20,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2021-11-07 08:29:20,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 13 states have (on average 1.0) internal successors, (13), 13 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) [2021-11-07 08:29:20,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 13 transitions. [2021-11-07 08:29:20,963 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 13 transitions. Word has length 12 [2021-11-07 08:29:20,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:29:20,963 INFO L470 AbstractCegarLoop]: Abstraction has 14 states and 13 transitions. [2021-11-07 08:29:20,963 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.0) internal successors, (20), 10 states have internal predecessors, (20), 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) [2021-11-07 08:29:20,964 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 13 transitions. [2021-11-07 08:29:20,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-07 08:29:20,965 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:29:20,965 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:29:20,985 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_781c9bea-8b96-4176-b819-f0db75827a95/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-07 08:29:21,165 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_781c9bea-8b96-4176-b819-f0db75827a95/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 [2021-11-07 08:29:21,166 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 08:29:21,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:29:21,167 INFO L85 PathProgramCache]: Analyzing trace with hash -1317358715, now seen corresponding path program 1 times [2021-11-07 08:29:21,167 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 08:29:21,168 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [588832453] [2021-11-07 08:29:21,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:29:21,168 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 08:29:21,168 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_781c9bea-8b96-4176-b819-f0db75827a95/bin/uautomizer-AkOaLMaTGY/mathsat [2021-11-07 08:29:21,176 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_781c9bea-8b96-4176-b819-f0db75827a95/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 08:29:21,177 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_781c9bea-8b96-4176-b819-f0db75827a95/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-07 08:29:22,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:29:22,142 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 24 conjunts are in the unsatisfiable core [2021-11-07 08:29:22,160 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:29:25,324 INFO L354 Elim1Store]: treesize reduction 358, result has 15.4 percent of original size [2021-11-07 08:29:25,326 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 8 case distinctions, treesize of input 295 treesize of output 330 [2021-11-07 08:30:19,055 INFO L354 Elim1Store]: treesize reduction 293, result has 16.3 percent of original size [2021-11-07 08:30:19,057 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 8 select indices, 8 select index equivalence classes, 1 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 34 case distinctions, treesize of input 237 treesize of output 276 [2021-11-07 08:30:19,209 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:30:19,230 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:30:19,252 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:30:19,297 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:30:19,317 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:30:19,344 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:30:19,366 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:30:19,389 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:30:19,412 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:30:19,414 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 08:30:19,756 INFO L354 Elim1Store]: treesize reduction 93, result has 8.8 percent of original size [2021-11-07 08:30:19,757 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 11 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 262 treesize of output 277 [2021-11-07 08:32:03,568 INFO L354 Elim1Store]: treesize reduction 166, result has 40.9 percent of original size [2021-11-07 08:32:03,569 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 9 select indices, 9 select index equivalence classes, 1 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 35 case distinctions, treesize of input 301 treesize of output 397 [2021-11-07 08:32:03,793 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:32:03,817 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:32:03,842 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:32:03,868 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:32:03,893 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:32:03,918 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:32:03,945 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:32:03,971 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:32:03,995 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:32:03,997 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 08:32:05,076 INFO L354 Elim1Store]: treesize reduction 146, result has 18.0 percent of original size [2021-11-07 08:32:05,078 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 11 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 18 case distinctions, treesize of input 383 treesize of output 412 [2021-11-07 08:33:36,426 WARN L207 SmtUtils]: Spent 15.18 s on a formula simplification. DAG size of input: 117 DAG size of output: 108 [2021-11-07 08:33:50,622 WARN L207 SmtUtils]: Spent 8.83 s on a formula simplification. DAG size of input: 114 DAG size of output: 86 [2021-11-07 08:33:50,623 INFO L354 Elim1Store]: treesize reduction 96, result has 68.5 percent of original size [2021-11-07 08:33:50,624 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 11 select indices, 11 select index equivalence classes, 10 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 55 case distinctions, treesize of input 283 treesize of output 389