./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/double_req_bl_1031.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e77c044 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_248e778a-56dc-4b92-81e5-11bf599bf0cc/bin/uautomizer-WNIpwEf4Nt/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_248e778a-56dc-4b92-81e5-11bf599bf0cc/bin/uautomizer-WNIpwEf4Nt/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_248e778a-56dc-4b92-81e5-11bf599bf0cc/bin/uautomizer-WNIpwEf4Nt/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_248e778a-56dc-4b92-81e5-11bf599bf0cc/bin/uautomizer-WNIpwEf4Nt/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1031.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_248e778a-56dc-4b92-81e5-11bf599bf0cc/bin/uautomizer-WNIpwEf4Nt/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_248e778a-56dc-4b92-81e5-11bf599bf0cc/bin/uautomizer-WNIpwEf4Nt --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 2c4d19baf0429684b688f90d909ef640d9fb6537 .................................................................................................................................................................................................................................................................................................. Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_248e778a-56dc-4b92-81e5-11bf599bf0cc/bin/uautomizer-WNIpwEf4Nt/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_248e778a-56dc-4b92-81e5-11bf599bf0cc/bin/uautomizer-WNIpwEf4Nt/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_248e778a-56dc-4b92-81e5-11bf599bf0cc/bin/uautomizer-WNIpwEf4Nt/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_248e778a-56dc-4b92-81e5-11bf599bf0cc/bin/uautomizer-WNIpwEf4Nt/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1031.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_248e778a-56dc-4b92-81e5-11bf599bf0cc/bin/uautomizer-WNIpwEf4Nt/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_248e778a-56dc-4b92-81e5-11bf599bf0cc/bin/uautomizer-WNIpwEf4Nt --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 2c4d19baf0429684b688f90d909ef640d9fb6537 ......................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-4e77c04 [2021-10-13 01:03:07,701 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 01:03:07,704 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 01:03:07,758 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 01:03:07,759 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 01:03:07,763 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 01:03:07,765 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 01:03:07,769 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 01:03:07,771 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 01:03:07,777 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 01:03:07,778 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 01:03:07,779 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 01:03:07,780 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 01:03:07,782 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 01:03:07,784 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 01:03:07,792 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 01:03:07,793 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 01:03:07,794 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 01:03:07,797 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 01:03:07,804 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 01:03:07,806 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 01:03:07,807 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 01:03:07,810 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 01:03:07,811 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 01:03:07,819 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 01:03:07,820 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 01:03:07,820 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 01:03:07,822 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 01:03:07,823 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 01:03:07,824 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 01:03:07,824 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 01:03:07,825 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 01:03:07,827 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 01:03:07,828 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 01:03:07,829 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 01:03:07,829 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 01:03:07,830 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 01:03:07,830 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 01:03:07,831 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 01:03:07,831 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 01:03:07,832 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 01:03:07,833 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_248e778a-56dc-4b92-81e5-11bf599bf0cc/bin/uautomizer-WNIpwEf4Nt/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-13 01:03:07,873 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 01:03:07,873 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 01:03:07,874 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-13 01:03:07,874 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-13 01:03:07,881 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-13 01:03:07,882 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-13 01:03:07,882 INFO L138 SettingsManager]: * Use SBE=true [2021-10-13 01:03:07,882 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 01:03:07,882 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 01:03:07,883 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 01:03:07,884 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 01:03:07,884 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 01:03:07,884 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 01:03:07,884 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 01:03:07,884 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 01:03:07,885 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 01:03:07,885 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 01:03:07,885 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 01:03:07,885 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 01:03:07,886 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 01:03:07,886 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-13 01:03:07,886 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 01:03:07,886 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 01:03:07,886 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 01:03:07,887 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 01:03:07,887 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 01:03:07,887 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-13 01:03:07,887 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-13 01:03:07,888 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 01:03:07,888 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 01:03:07,888 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_248e778a-56dc-4b92-81e5-11bf599bf0cc/bin/uautomizer-WNIpwEf4Nt/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_248e778a-56dc-4b92-81e5-11bf599bf0cc/bin/uautomizer-WNIpwEf4Nt Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2c4d19baf0429684b688f90d909ef640d9fb6537 [2021-10-13 01:03:08,174 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 01:03:08,205 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 01:03:08,207 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 01:03:08,209 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 01:03:08,209 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 01:03:08,210 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_248e778a-56dc-4b92-81e5-11bf599bf0cc/bin/uautomizer-WNIpwEf4Nt/../../sv-benchmarks/c/float-newlib/double_req_bl_1031.c [2021-10-13 01:03:08,304 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_248e778a-56dc-4b92-81e5-11bf599bf0cc/bin/uautomizer-WNIpwEf4Nt/data/2820b38f7/cec499e4ef4248f285ab5f027b443bba/FLAGc91c5e863 [2021-10-13 01:03:08,828 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 01:03:08,829 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_248e778a-56dc-4b92-81e5-11bf599bf0cc/sv-benchmarks/c/float-newlib/double_req_bl_1031.c [2021-10-13 01:03:08,836 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_248e778a-56dc-4b92-81e5-11bf599bf0cc/bin/uautomizer-WNIpwEf4Nt/data/2820b38f7/cec499e4ef4248f285ab5f027b443bba/FLAGc91c5e863 [2021-10-13 01:03:09,215 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_248e778a-56dc-4b92-81e5-11bf599bf0cc/bin/uautomizer-WNIpwEf4Nt/data/2820b38f7/cec499e4ef4248f285ab5f027b443bba [2021-10-13 01:03:09,218 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 01:03:09,219 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 01:03:09,222 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 01:03:09,222 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 01:03:09,241 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 01:03:09,242 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 01:03:09" (1/1) ... [2021-10-13 01:03:09,243 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2056b0fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:03:09, skipping insertion in model container [2021-10-13 01:03:09,243 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 01:03:09" (1/1) ... [2021-10-13 01:03:09,251 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 01:03:09,287 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 01:03:09,462 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_248e778a-56dc-4b92-81e5-11bf599bf0cc/sv-benchmarks/c/float-newlib/double_req_bl_1031.c[2057,2070] [2021-10-13 01:03:09,472 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 01:03:09,481 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 01:03:09,509 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_248e778a-56dc-4b92-81e5-11bf599bf0cc/sv-benchmarks/c/float-newlib/double_req_bl_1031.c[2057,2070] [2021-10-13 01:03:09,510 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 01:03:09,525 INFO L208 MainTranslator]: Completed translation [2021-10-13 01:03:09,526 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:03:09 WrapperNode [2021-10-13 01:03:09,526 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 01:03:09,527 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 01:03:09,528 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 01:03:09,528 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 01:03:09,536 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:03:09" (1/1) ... [2021-10-13 01:03:09,545 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:03:09" (1/1) ... [2021-10-13 01:03:09,569 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 01:03:09,570 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 01:03:09,571 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 01:03:09,571 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 01:03:09,580 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:03:09" (1/1) ... [2021-10-13 01:03:09,581 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:03:09" (1/1) ... [2021-10-13 01:03:09,584 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:03:09" (1/1) ... [2021-10-13 01:03:09,585 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:03:09" (1/1) ... [2021-10-13 01:03:09,593 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:03:09" (1/1) ... [2021-10-13 01:03:09,597 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:03:09" (1/1) ... [2021-10-13 01:03:09,599 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:03:09" (1/1) ... [2021-10-13 01:03:09,602 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 01:03:09,604 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 01:03:09,604 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 01:03:09,604 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 01:03:09,605 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:03:09" (1/1) ... [2021-10-13 01:03:09,613 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 01:03:09,628 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_248e778a-56dc-4b92-81e5-11bf599bf0cc/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:03:09,641 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_248e778a-56dc-4b92-81e5-11bf599bf0cc/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 01:03:09,659 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_248e778a-56dc-4b92-81e5-11bf599bf0cc/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 01:03:09,699 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-13 01:03:09,700 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 01:03:09,700 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-10-13 01:03:09,700 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-13 01:03:09,700 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-10-13 01:03:09,701 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 01:03:09,701 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 01:03:09,701 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-13 01:03:09,702 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-13 01:03:09,972 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 01:03:09,973 INFO L299 CfgBuilder]: Removed 12 assume(true) statements. [2021-10-13 01:03:09,975 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 01:03:09 BoogieIcfgContainer [2021-10-13 01:03:09,975 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 01:03:09,977 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 01:03:09,977 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 01:03:09,981 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 01:03:09,982 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 01:03:09" (1/3) ... [2021-10-13 01:03:09,982 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@139c1dea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 01:03:09, skipping insertion in model container [2021-10-13 01:03:09,983 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:03:09" (2/3) ... [2021-10-13 01:03:09,983 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@139c1dea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 01:03:09, skipping insertion in model container [2021-10-13 01:03:09,983 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 01:03:09" (3/3) ... [2021-10-13 01:03:09,985 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1031.c [2021-10-13 01:03:09,991 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 01:03:09,991 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-13 01:03:10,046 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 01:03:10,054 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-13 01:03:10,054 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-13 01:03:10,072 INFO L276 IsEmpty]: Start isEmpty. Operand has 26 states, 24 states have (on average 1.5833333333333333) internal successors, (38), 25 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:03:10,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-13 01:03:10,078 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 01:03:10,079 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 01:03:10,080 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 01:03:10,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:03:10,086 INFO L82 PathProgramCache]: Analyzing trace with hash 2068161395, now seen corresponding path program 1 times [2021-10-13 01:03:10,145 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:03:10,146 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1385465511] [2021-10-13 01:03:10,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:03:10,147 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:03:10,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:03:10,370 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:03:10,371 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 01:03:10,372 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1385465511] [2021-10-13 01:03:10,374 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1385465511] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 01:03:10,374 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 01:03:10,375 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-13 01:03:10,377 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94194941] [2021-10-13 01:03:10,385 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-13 01:03:10,386 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 01:03:10,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-13 01:03:10,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-13 01:03:10,420 INFO L87 Difference]: Start difference. First operand has 26 states, 24 states have (on average 1.5833333333333333) internal successors, (38), 25 states have internal predecessors, (38), 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 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:03:10,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:03:10,445 INFO L93 Difference]: Finished difference Result 50 states and 74 transitions. [2021-10-13 01:03:10,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-13 01:03:10,447 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 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 11 [2021-10-13 01:03:10,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 01:03:10,458 INFO L225 Difference]: With dead ends: 50 [2021-10-13 01:03:10,458 INFO L226 Difference]: Without dead ends: 23 [2021-10-13 01:03:10,464 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-13 01:03:10,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2021-10-13 01:03:10,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2021-10-13 01:03:10,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.3636363636363635) internal successors, (30), 22 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:03:10,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 30 transitions. [2021-10-13 01:03:10,509 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 30 transitions. Word has length 11 [2021-10-13 01:03:10,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 01:03:10,510 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 30 transitions. [2021-10-13 01:03:10,511 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:03:10,511 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 30 transitions. [2021-10-13 01:03:10,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-13 01:03:10,512 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 01:03:10,513 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 01:03:10,513 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-13 01:03:10,513 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 01:03:10,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:03:10,524 INFO L82 PathProgramCache]: Analyzing trace with hash -1606884976, now seen corresponding path program 1 times [2021-10-13 01:03:10,525 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:03:10,525 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864044046] [2021-10-13 01:03:10,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:03:10,526 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:03:10,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 01:03:10,639 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 01:03:10,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 01:03:10,709 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-13 01:03:10,709 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-13 01:03:10,711 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 01:03:10,713 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-13 01:03:10,720 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-13 01:03:10,765 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 01:03:10 BoogieIcfgContainer [2021-10-13 01:03:10,765 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-13 01:03:10,767 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-13 01:03:10,767 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-13 01:03:10,768 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-13 01:03:10,768 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 01:03:09" (3/4) ... [2021-10-13 01:03:10,772 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-13 01:03:10,772 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-13 01:03:10,775 INFO L168 Benchmark]: Toolchain (without parser) took 1554.58 ms. Allocated memory was 92.3 MB in the beginning and 111.1 MB in the end (delta: 18.9 MB). Free memory was 52.6 MB in the beginning and 69.8 MB in the end (delta: -17.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 01:03:10,776 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 92.3 MB. Free memory is still 68.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 01:03:10,778 INFO L168 Benchmark]: CACSL2BoogieTranslator took 304.64 ms. Allocated memory is still 92.3 MB. Free memory was 52.4 MB in the beginning and 68.1 MB in the end (delta: -15.7 MB). Peak memory consumption was 6.0 MB. Max. memory is 16.1 GB. [2021-10-13 01:03:10,781 INFO L168 Benchmark]: Boogie Procedure Inliner took 42.33 ms. Allocated memory is still 92.3 MB. Free memory was 68.1 MB in the beginning and 66.3 MB in the end (delta: 1.8 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 01:03:10,783 INFO L168 Benchmark]: Boogie Preprocessor took 32.49 ms. Allocated memory is still 92.3 MB. Free memory was 66.3 MB in the beginning and 64.9 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 01:03:10,789 INFO L168 Benchmark]: RCFGBuilder took 371.77 ms. Allocated memory is still 92.3 MB. Free memory was 64.9 MB in the beginning and 53.0 MB in the end (delta: 11.9 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-10-13 01:03:10,790 INFO L168 Benchmark]: TraceAbstraction took 788.34 ms. Allocated memory was 92.3 MB in the beginning and 111.1 MB in the end (delta: 18.9 MB). Free memory was 52.5 MB in the beginning and 70.3 MB in the end (delta: -17.8 MB). Peak memory consumption was 76.5 kB. Max. memory is 16.1 GB. [2021-10-13 01:03:10,791 INFO L168 Benchmark]: Witness Printer took 5.64 ms. Allocated memory is still 111.1 MB. Free memory was 70.3 MB in the beginning and 69.8 MB in the end (delta: 550.7 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 01:03:10,800 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 92.3 MB. Free memory is still 68.9 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 304.64 ms. Allocated memory is still 92.3 MB. Free memory was 52.4 MB in the beginning and 68.1 MB in the end (delta: -15.7 MB). Peak memory consumption was 6.0 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 42.33 ms. Allocated memory is still 92.3 MB. Free memory was 68.1 MB in the beginning and 66.3 MB in the end (delta: 1.8 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 32.49 ms. Allocated memory is still 92.3 MB. Free memory was 66.3 MB in the beginning and 64.9 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 371.77 ms. Allocated memory is still 92.3 MB. Free memory was 64.9 MB in the beginning and 53.0 MB in the end (delta: 11.9 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 788.34 ms. Allocated memory was 92.3 MB in the beginning and 111.1 MB in the end (delta: 18.9 MB). Free memory was 52.5 MB in the beginning and 70.3 MB in the end (delta: -17.8 MB). Peak memory consumption was 76.5 kB. Max. memory is 16.1 GB. * Witness Printer took 5.64 ms. Allocated memory is still 111.1 MB. Free memory was 70.3 MB in the beginning and 69.8 MB in the end (delta: 550.7 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 81]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of shiftRight at line 36, overapproximation of someBinaryArithmeticDOUBLEoperation at line 76, overapproximation of bitwiseAnd at line 37, overapproximation of someBinaryDOUBLEComparisonOperation at line 17. Possible FailurePath: [L76] double x = 0.0 / 0.0; [L20] __int32_t msw, exponent_less_1023; [L21] __uint32_t lsw; [L23] ieee_double_shape_type ew_u; [L24] ew_u.value = (x) [L25] EXPR ew_u.parts.msw [L25] (msw) = ew_u.parts.msw [L26] EXPR ew_u.parts.lsw [L26] (lsw) = ew_u.parts.lsw [L28] exponent_less_1023 = ((msw & 0x7ff00000) >> 20) - 1023 [L29] COND TRUE exponent_less_1023 < 20 [L30] COND FALSE !(exponent_less_1023 < 0) [L36] __uint32_t exponent_mask = 0x000fffff >> exponent_less_1023; [L37] COND TRUE (msw & exponent_mask) == 0 && lsw == 0 [L38] return x; [L77] double res = round_double(x); [L17] return x != x; [L80] COND TRUE !isnan_double(res) [L81] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 26 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 674.5ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 12.7ms, AutomataDifference: 75.3ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 12.3ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 33 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=26occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 27.5ms AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 14.6ms SsaConstructionTime, 146.6ms SatisfiabilityAnalysisTime, 66.1ms InterpolantComputationTime, 23 NumberOfCodeBlocks, 23 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 10 ConstructedInterpolants, 0 QuantifiedInterpolants, 10 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-10-13 01:03:10,861 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_248e778a-56dc-4b92-81e5-11bf599bf0cc/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-dev-4e77c04 [2021-10-13 01:03:13,515 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 01:03:13,518 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 01:03:13,555 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 01:03:13,556 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 01:03:13,558 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 01:03:13,560 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 01:03:13,563 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 01:03:13,566 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 01:03:13,568 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 01:03:13,569 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 01:03:13,571 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 01:03:13,572 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 01:03:13,573 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 01:03:13,575 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 01:03:13,577 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 01:03:13,578 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 01:03:13,580 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 01:03:13,582 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 01:03:13,585 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 01:03:13,587 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 01:03:13,589 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 01:03:13,591 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 01:03:13,592 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 01:03:13,597 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 01:03:13,598 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 01:03:13,598 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 01:03:13,600 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 01:03:13,601 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 01:03:13,602 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 01:03:13,603 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 01:03:13,604 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 01:03:13,605 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 01:03:13,606 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 01:03:13,608 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 01:03:13,608 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 01:03:13,610 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 01:03:13,610 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 01:03:13,611 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 01:03:13,612 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 01:03:13,613 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 01:03:13,616 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_248e778a-56dc-4b92-81e5-11bf599bf0cc/bin/uautomizer-WNIpwEf4Nt/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-10-13 01:03:13,669 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 01:03:13,672 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 01:03:13,674 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-13 01:03:13,674 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-13 01:03:13,676 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-13 01:03:13,677 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-13 01:03:13,677 INFO L138 SettingsManager]: * Use SBE=true [2021-10-13 01:03:13,677 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 01:03:13,678 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 01:03:13,678 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 01:03:13,679 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 01:03:13,680 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 01:03:13,680 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 01:03:13,680 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 01:03:13,681 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-13 01:03:13,681 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-13 01:03:13,681 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 01:03:13,682 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 01:03:13,682 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 01:03:13,682 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 01:03:13,683 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 01:03:13,683 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-13 01:03:13,683 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 01:03:13,684 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 01:03:13,684 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 01:03:13,684 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 01:03:13,685 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 01:03:13,685 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-10-13 01:03:13,685 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-13 01:03:13,685 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 01:03:13,686 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 01:03:13,686 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-13 01:03:13,687 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_248e778a-56dc-4b92-81e5-11bf599bf0cc/bin/uautomizer-WNIpwEf4Nt/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_248e778a-56dc-4b92-81e5-11bf599bf0cc/bin/uautomizer-WNIpwEf4Nt Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2c4d19baf0429684b688f90d909ef640d9fb6537 [2021-10-13 01:03:14,099 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 01:03:14,124 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 01:03:14,127 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 01:03:14,129 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 01:03:14,129 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 01:03:14,130 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_248e778a-56dc-4b92-81e5-11bf599bf0cc/bin/uautomizer-WNIpwEf4Nt/../../sv-benchmarks/c/float-newlib/double_req_bl_1031.c [2021-10-13 01:03:14,213 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_248e778a-56dc-4b92-81e5-11bf599bf0cc/bin/uautomizer-WNIpwEf4Nt/data/2eba9d140/35a06e924a1c46e78591823f780046a8/FLAG1301f51f6 [2021-10-13 01:03:14,841 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 01:03:14,842 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_248e778a-56dc-4b92-81e5-11bf599bf0cc/sv-benchmarks/c/float-newlib/double_req_bl_1031.c [2021-10-13 01:03:14,849 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_248e778a-56dc-4b92-81e5-11bf599bf0cc/bin/uautomizer-WNIpwEf4Nt/data/2eba9d140/35a06e924a1c46e78591823f780046a8/FLAG1301f51f6 [2021-10-13 01:03:15,236 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_248e778a-56dc-4b92-81e5-11bf599bf0cc/bin/uautomizer-WNIpwEf4Nt/data/2eba9d140/35a06e924a1c46e78591823f780046a8 [2021-10-13 01:03:15,241 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 01:03:15,244 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 01:03:15,248 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 01:03:15,248 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 01:03:15,253 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 01:03:15,254 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 01:03:15" (1/1) ... [2021-10-13 01:03:15,256 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@38710075 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:03:15, skipping insertion in model container [2021-10-13 01:03:15,256 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 01:03:15" (1/1) ... [2021-10-13 01:03:15,265 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 01:03:15,290 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 01:03:15,523 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_248e778a-56dc-4b92-81e5-11bf599bf0cc/sv-benchmarks/c/float-newlib/double_req_bl_1031.c[2057,2070] [2021-10-13 01:03:15,527 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 01:03:15,541 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 01:03:15,592 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_248e778a-56dc-4b92-81e5-11bf599bf0cc/sv-benchmarks/c/float-newlib/double_req_bl_1031.c[2057,2070] [2021-10-13 01:03:15,593 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 01:03:15,626 INFO L208 MainTranslator]: Completed translation [2021-10-13 01:03:15,627 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:03:15 WrapperNode [2021-10-13 01:03:15,628 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 01:03:15,629 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 01:03:15,630 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 01:03:15,630 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 01:03:15,639 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:03:15" (1/1) ... [2021-10-13 01:03:15,673 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:03:15" (1/1) ... [2021-10-13 01:03:15,713 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 01:03:15,715 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 01:03:15,715 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 01:03:15,715 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 01:03:15,725 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:03:15" (1/1) ... [2021-10-13 01:03:15,726 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:03:15" (1/1) ... [2021-10-13 01:03:15,741 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:03:15" (1/1) ... [2021-10-13 01:03:15,741 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:03:15" (1/1) ... [2021-10-13 01:03:15,766 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:03:15" (1/1) ... [2021-10-13 01:03:15,772 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:03:15" (1/1) ... [2021-10-13 01:03:15,782 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:03:15" (1/1) ... [2021-10-13 01:03:15,793 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 01:03:15,797 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 01:03:15,799 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 01:03:15,799 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 01:03:15,800 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:03:15" (1/1) ... [2021-10-13 01:03:15,810 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 01:03:15,828 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_248e778a-56dc-4b92-81e5-11bf599bf0cc/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:03:15,848 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_248e778a-56dc-4b92-81e5-11bf599bf0cc/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 01:03:15,881 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_248e778a-56dc-4b92-81e5-11bf599bf0cc/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 01:03:15,930 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2021-10-13 01:03:15,931 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2021-10-13 01:03:15,931 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-13 01:03:15,932 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 01:03:15,932 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-13 01:03:15,932 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 01:03:15,932 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 01:03:15,933 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-13 01:03:15,933 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-13 01:03:16,407 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 01:03:16,407 INFO L299 CfgBuilder]: Removed 12 assume(true) statements. [2021-10-13 01:03:16,409 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 01:03:16 BoogieIcfgContainer [2021-10-13 01:03:16,410 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 01:03:16,411 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 01:03:16,412 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 01:03:16,415 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 01:03:16,415 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 01:03:15" (1/3) ... [2021-10-13 01:03:16,416 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e45d975 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 01:03:16, skipping insertion in model container [2021-10-13 01:03:16,416 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:03:15" (2/3) ... [2021-10-13 01:03:16,417 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e45d975 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 01:03:16, skipping insertion in model container [2021-10-13 01:03:16,417 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 01:03:16" (3/3) ... [2021-10-13 01:03:16,418 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1031.c [2021-10-13 01:03:16,424 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 01:03:16,424 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-13 01:03:16,499 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 01:03:16,506 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-13 01:03:16,507 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-13 01:03:16,524 INFO L276 IsEmpty]: Start isEmpty. Operand has 26 states, 24 states have (on average 1.5833333333333333) internal successors, (38), 25 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:03:16,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-13 01:03:16,543 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 01:03:16,543 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 01:03:16,544 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 01:03:16,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:03:16,549 INFO L82 PathProgramCache]: Analyzing trace with hash 2068161395, now seen corresponding path program 1 times [2021-10-13 01:03:16,572 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 01:03:16,573 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1055967002] [2021-10-13 01:03:16,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:03:16,574 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 01:03:16,581 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_248e778a-56dc-4b92-81e5-11bf599bf0cc/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-13 01:03:16,594 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_248e778a-56dc-4b92-81e5-11bf599bf0cc/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 01:03:16,624 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_248e778a-56dc-4b92-81e5-11bf599bf0cc/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-13 01:03:16,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:03:16,703 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-13 01:03:16,707 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:03:16,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:03:16,763 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 01:03:16,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:03:16,838 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 01:03:16,838 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1055967002] [2021-10-13 01:03:16,839 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1055967002] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 01:03:16,839 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 01:03:16,839 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-13 01:03:16,841 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099001891] [2021-10-13 01:03:16,845 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-13 01:03:16,845 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 01:03:16,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-13 01:03:16,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-13 01:03:16,863 INFO L87 Difference]: Start difference. First operand has 26 states, 24 states have (on average 1.5833333333333333) internal successors, (38), 25 states have internal predecessors, (38), 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 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:03:16,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:03:16,880 INFO L93 Difference]: Finished difference Result 50 states and 74 transitions. [2021-10-13 01:03:16,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-13 01:03:16,882 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 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 11 [2021-10-13 01:03:16,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 01:03:16,892 INFO L225 Difference]: With dead ends: 50 [2021-10-13 01:03:16,894 INFO L226 Difference]: Without dead ends: 23 [2021-10-13 01:03:16,897 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-13 01:03:16,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2021-10-13 01:03:16,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2021-10-13 01:03:16,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.3636363636363635) internal successors, (30), 22 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:03:16,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 30 transitions. [2021-10-13 01:03:16,929 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 30 transitions. Word has length 11 [2021-10-13 01:03:16,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 01:03:16,929 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 30 transitions. [2021-10-13 01:03:16,929 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:03:16,930 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 30 transitions. [2021-10-13 01:03:16,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-13 01:03:16,931 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 01:03:16,931 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 01:03:16,941 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_248e778a-56dc-4b92-81e5-11bf599bf0cc/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-13 01:03:17,131 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_248e778a-56dc-4b92-81e5-11bf599bf0cc/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-13 01:03:17,132 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 01:03:17,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:03:17,134 INFO L82 PathProgramCache]: Analyzing trace with hash -1606884976, now seen corresponding path program 1 times [2021-10-13 01:03:17,135 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 01:03:17,135 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1749733058] [2021-10-13 01:03:17,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:03:17,136 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 01:03:17,136 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_248e778a-56dc-4b92-81e5-11bf599bf0cc/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-13 01:03:17,137 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_248e778a-56dc-4b92-81e5-11bf599bf0cc/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 01:03:17,139 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_248e778a-56dc-4b92-81e5-11bf599bf0cc/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-13 01:03:17,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:03:17,265 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-13 01:03:17,267 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:03:17,597 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:03:17,597 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 01:03:17,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:03:17,819 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 01:03:17,819 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1749733058] [2021-10-13 01:03:17,819 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1749733058] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 01:03:17,820 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 01:03:17,820 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2021-10-13 01:03:17,820 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893271957] [2021-10-13 01:03:17,822 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-13 01:03:17,822 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 01:03:17,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-13 01:03:17,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-10-13 01:03:17,824 INFO L87 Difference]: Start difference. First operand 23 states and 30 transitions. Second operand has 10 states, 10 states have (on average 2.2) internal successors, (22), 10 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:03:18,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:03:18,777 INFO L93 Difference]: Finished difference Result 28 states and 34 transitions. [2021-10-13 01:03:18,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-13 01:03:18,778 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.2) internal successors, (22), 10 states have internal predecessors, (22), 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 [2021-10-13 01:03:18,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 01:03:18,778 INFO L225 Difference]: With dead ends: 28 [2021-10-13 01:03:18,779 INFO L226 Difference]: Without dead ends: 22 [2021-10-13 01:03:18,780 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 384.9ms TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2021-10-13 01:03:18,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2021-10-13 01:03:18,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2021-10-13 01:03:18,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.1904761904761905) internal successors, (25), 21 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:03:18,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 25 transitions. [2021-10-13 01:03:18,784 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 25 transitions. Word has length 12 [2021-10-13 01:03:18,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 01:03:18,784 INFO L470 AbstractCegarLoop]: Abstraction has 22 states and 25 transitions. [2021-10-13 01:03:18,785 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.2) internal successors, (22), 10 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:03:18,785 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 25 transitions. [2021-10-13 01:03:18,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-13 01:03:18,786 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 01:03:18,786 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 01:03:18,801 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_248e778a-56dc-4b92-81e5-11bf599bf0cc/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-13 01:03:18,997 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_248e778a-56dc-4b92-81e5-11bf599bf0cc/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-13 01:03:18,998 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 01:03:18,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:03:18,999 INFO L82 PathProgramCache]: Analyzing trace with hash -1251020519, now seen corresponding path program 1 times [2021-10-13 01:03:19,000 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 01:03:19,000 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1354650181] [2021-10-13 01:03:19,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:03:19,001 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 01:03:19,001 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_248e778a-56dc-4b92-81e5-11bf599bf0cc/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-13 01:03:19,002 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_248e778a-56dc-4b92-81e5-11bf599bf0cc/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 01:03:19,018 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_248e778a-56dc-4b92-81e5-11bf599bf0cc/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-13 01:03:19,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:03:19,133 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-13 01:03:19,143 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:03:19,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:03:19,496 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 01:03:19,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:03:19,742 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 01:03:19,742 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1354650181] [2021-10-13 01:03:19,742 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1354650181] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 01:03:19,743 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 01:03:19,743 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-10-13 01:03:19,743 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145482454] [2021-10-13 01:03:19,744 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-13 01:03:19,744 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 01:03:19,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-13 01:03:19,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-10-13 01:03:19,745 INFO L87 Difference]: Start difference. First operand 22 states and 25 transitions. Second operand has 8 states, 8 states have (on average 2.5) internal successors, (20), 8 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) [2021-10-13 01:03:20,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:03:20,010 INFO L93 Difference]: Finished difference Result 22 states and 25 transitions. [2021-10-13 01:03:20,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 01:03:20,011 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.5) internal successors, (20), 8 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 15 [2021-10-13 01:03:20,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 01:03:20,012 INFO L225 Difference]: With dead ends: 22 [2021-10-13 01:03:20,012 INFO L226 Difference]: Without dead ends: 0 [2021-10-13 01:03:20,013 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 414.9ms TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2021-10-13 01:03:20,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-13 01:03:20,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-13 01:03:20,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:03:20,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-13 01:03:20,014 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2021-10-13 01:03:20,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 01:03:20,014 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-13 01:03:20,014 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.5) internal successors, (20), 8 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) [2021-10-13 01:03:20,015 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-13 01:03:20,015 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-13 01:03:20,017 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 01:03:20,039 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_248e778a-56dc-4b92-81e5-11bf599bf0cc/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-13 01:03:20,229 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_248e778a-56dc-4b92-81e5-11bf599bf0cc/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-13 01:03:20,232 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-13 01:03:20,236 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 01:03:20,279 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 01:03:20,280 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 01:03:20,283 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 01:03:20,338 INFO L860 garLoopResultBuilder]: At program point L85(lines 68 86) the Hoare annotation is: true [2021-10-13 01:03:20,339 INFO L857 garLoopResultBuilder]: For program point L81(line 81) no Hoare annotation was computed. [2021-10-13 01:03:20,339 INFO L857 garLoopResultBuilder]: For program point L44(lines 44 47) no Hoare annotation was computed. [2021-10-13 01:03:20,339 INFO L853 garLoopResultBuilder]: At program point L65(lines 19 66) the Hoare annotation is: (and (not (fp.eq ULTIMATE.start_round_double_~x ULTIMATE.start_round_double_~x)) (not (fp.eq |ULTIMATE.start_round_double_#res| |ULTIMATE.start_round_double_#res|))) [2021-10-13 01:03:20,339 INFO L857 garLoopResultBuilder]: For program point L32(lines 32 33) no Hoare annotation was computed. [2021-10-13 01:03:20,340 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-10-13 01:03:20,340 INFO L857 garLoopResultBuilder]: For program point L32-2(lines 32 33) no Hoare annotation was computed. [2021-10-13 01:03:20,340 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-13 01:03:20,340 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-10-13 01:03:20,340 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 81) no Hoare annotation was computed. [2021-10-13 01:03:20,340 INFO L857 garLoopResultBuilder]: For program point L37(lines 37 38) no Hoare annotation was computed. [2021-10-13 01:03:20,341 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-13 01:03:20,341 INFO L857 garLoopResultBuilder]: For program point L29(lines 29 58) no Hoare annotation was computed. [2021-10-13 01:03:20,341 INFO L857 garLoopResultBuilder]: For program point L54(lines 54 55) no Hoare annotation was computed. [2021-10-13 01:03:20,341 INFO L857 garLoopResultBuilder]: For program point L54-2(lines 54 55) no Hoare annotation was computed. [2021-10-13 01:03:20,341 INFO L853 garLoopResultBuilder]: At program point L17(line 17) the Hoare annotation is: (and (not (fp.eq ULTIMATE.start_round_double_~x ULTIMATE.start_round_double_~x)) (= (_ bv1 32) |ULTIMATE.start_isnan_double_#res|) (not (fp.eq |ULTIMATE.start_round_double_#res| |ULTIMATE.start_round_double_#res|))) [2021-10-13 01:03:20,342 INFO L857 garLoopResultBuilder]: For program point L30(lines 30 42) no Hoare annotation was computed. [2021-10-13 01:03:20,342 INFO L857 garLoopResultBuilder]: For program point L59(lines 59 64) no Hoare annotation was computed. [2021-10-13 01:03:20,342 INFO L857 garLoopResultBuilder]: For program point L59-1(lines 19 66) no Hoare annotation was computed. [2021-10-13 01:03:20,342 INFO L857 garLoopResultBuilder]: For program point L59-2(lines 59 64) no Hoare annotation was computed. [2021-10-13 01:03:20,342 INFO L857 garLoopResultBuilder]: For program point L22-1(lines 22 27) no Hoare annotation was computed. [2021-10-13 01:03:20,342 INFO L853 garLoopResultBuilder]: At program point L22-2(lines 22 27) the Hoare annotation is: (not (fp.eq ULTIMATE.start_round_double_~x ULTIMATE.start_round_double_~x)) [2021-10-13 01:03:20,343 INFO L857 garLoopResultBuilder]: For program point L22-3(lines 22 27) no Hoare annotation was computed. [2021-10-13 01:03:20,343 INFO L857 garLoopResultBuilder]: For program point L51(lines 51 52) no Hoare annotation was computed. [2021-10-13 01:03:20,343 INFO L857 garLoopResultBuilder]: For program point L80(lines 80 83) no Hoare annotation was computed. [2021-10-13 01:03:20,343 INFO L857 garLoopResultBuilder]: For program point L43(lines 43 58) no Hoare annotation was computed. [2021-10-13 01:03:20,353 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-13 01:03:20,374 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 01:03:20 BoogieIcfgContainer [2021-10-13 01:03:20,374 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-13 01:03:20,376 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-13 01:03:20,376 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-13 01:03:20,376 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-13 01:03:20,377 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 01:03:16" (3/4) ... [2021-10-13 01:03:20,380 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-13 01:03:20,395 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2021-10-13 01:03:20,396 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2021-10-13 01:03:20,396 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-10-13 01:03:20,396 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-13 01:03:20,452 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: !~fp.eq~DOUBLE(x, x) && !~fp.eq~DOUBLE(\result, \result) [2021-10-13 01:03:20,456 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (!~fp.eq~DOUBLE(x, x) && 1bv32 == \result) && !~fp.eq~DOUBLE(\result, \result) [2021-10-13 01:03:20,499 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_248e778a-56dc-4b92-81e5-11bf599bf0cc/bin/uautomizer-WNIpwEf4Nt/witness.graphml [2021-10-13 01:03:20,499 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-13 01:03:20,504 INFO L168 Benchmark]: Toolchain (without parser) took 5256.43 ms. Allocated memory was 54.5 MB in the beginning and 69.2 MB in the end (delta: 14.7 MB). Free memory was 33.0 MB in the beginning and 41.0 MB in the end (delta: -8.0 MB). Peak memory consumption was 3.5 MB. Max. memory is 16.1 GB. [2021-10-13 01:03:20,504 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 54.5 MB. Free memory was 36.1 MB in the beginning and 36.0 MB in the end (delta: 44.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 01:03:20,505 INFO L168 Benchmark]: CACSL2BoogieTranslator took 380.73 ms. Allocated memory was 54.5 MB in the beginning and 69.2 MB in the end (delta: 14.7 MB). Free memory was 32.8 MB in the beginning and 52.6 MB in the end (delta: -19.9 MB). Peak memory consumption was 14.0 MB. Max. memory is 16.1 GB. [2021-10-13 01:03:20,506 INFO L168 Benchmark]: Boogie Procedure Inliner took 84.00 ms. Allocated memory is still 69.2 MB. Free memory was 52.4 MB in the beginning and 50.9 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 01:03:20,506 INFO L168 Benchmark]: Boogie Preprocessor took 81.74 ms. Allocated memory is still 69.2 MB. Free memory was 50.9 MB in the beginning and 49.4 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 01:03:20,506 INFO L168 Benchmark]: RCFGBuilder took 612.44 ms. Allocated memory is still 69.2 MB. Free memory was 49.2 MB in the beginning and 37.3 MB in the end (delta: 11.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-13 01:03:20,507 INFO L168 Benchmark]: TraceAbstraction took 3963.11 ms. Allocated memory is still 69.2 MB. Free memory was 36.7 MB in the beginning and 44.0 MB in the end (delta: -7.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 01:03:20,507 INFO L168 Benchmark]: Witness Printer took 123.84 ms. Allocated memory is still 69.2 MB. Free memory was 44.0 MB in the beginning and 41.0 MB in the end (delta: 3.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 01:03:20,510 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 54.5 MB. Free memory was 36.1 MB in the beginning and 36.0 MB in the end (delta: 44.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 380.73 ms. Allocated memory was 54.5 MB in the beginning and 69.2 MB in the end (delta: 14.7 MB). Free memory was 32.8 MB in the beginning and 52.6 MB in the end (delta: -19.9 MB). Peak memory consumption was 14.0 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 84.00 ms. Allocated memory is still 69.2 MB. Free memory was 52.4 MB in the beginning and 50.9 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 81.74 ms. Allocated memory is still 69.2 MB. Free memory was 50.9 MB in the beginning and 49.4 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 612.44 ms. Allocated memory is still 69.2 MB. Free memory was 49.2 MB in the beginning and 37.3 MB in the end (delta: 11.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 3963.11 ms. Allocated memory is still 69.2 MB. Free memory was 36.7 MB in the beginning and 44.0 MB in the end (delta: -7.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 123.84 ms. Allocated memory is still 69.2 MB. Free memory was 44.0 MB in the beginning and 41.0 MB in the end (delta: 3.0 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, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 81]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 26 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 3853.6ms, OverallIterations: 3, TraceHistogramMax: 1, EmptinessCheckTime: 26.1ms, AutomataDifference: 1277.4ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 107.7ms, InitialAbstractionConstructionTime: 11.4ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 59 SDtfs, 31 SDslu, 79 SDs, 0 SdLazy, 37 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 794.4ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 76 GetRequests, 56 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 800.1ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=26occurred in iteration=0, InterpolantAutomatonStates: 13, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 21.3ms AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 8 NumberOfFragments, 26 HoareAnnotationTreeSize, 4 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 54.3ms HoareSimplificationTime, 4 FomulaSimplificationsInter, 8 FormulaSimplificationTreeSizeReductionInter, 45.9ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 45.7ms SsaConstructionTime, 187.4ms SatisfiabilityAnalysisTime, 1309.2ms InterpolantComputationTime, 38 NumberOfCodeBlocks, 38 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 70 ConstructedInterpolants, 12 QuantifiedInterpolants, 249 SizeOfPredicates, 18 NumberOfNonLiveVariables, 147 ConjunctsInSsa, 19 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: (!~fp.eq~DOUBLE(x, x) && 1bv32 == \result) && !~fp.eq~DOUBLE(\result, \result) - InvariantResult [Line: 68]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: !~fp.eq~DOUBLE(x, x) - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: !~fp.eq~DOUBLE(x, x) && !~fp.eq~DOUBLE(\result, \result) RESULT: Ultimate proved your program to be correct! [2021-10-13 01:03:20,579 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_248e778a-56dc-4b92-81e5-11bf599bf0cc/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...