./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/double_req_bl_1071.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8b66ba8-d9b4-4aed-94e5-1706cf25154e/bin/uautomizer-UnR33cPsHg/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8b66ba8-d9b4-4aed-94e5-1706cf25154e/bin/uautomizer-UnR33cPsHg/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8b66ba8-d9b4-4aed-94e5-1706cf25154e/bin/uautomizer-UnR33cPsHg/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8b66ba8-d9b4-4aed-94e5-1706cf25154e/bin/uautomizer-UnR33cPsHg/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1071.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8b66ba8-d9b4-4aed-94e5-1706cf25154e/bin/uautomizer-UnR33cPsHg/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8b66ba8-d9b4-4aed-94e5-1706cf25154e/bin/uautomizer-UnR33cPsHg --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 8753b765717c2fe536e6a90ddefcee5a9aeaabafbc1bd4d26f8bbeefc7c2c477 ....................................................................................................................................................................................................................................................................................................... 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_f8b66ba8-d9b4-4aed-94e5-1706cf25154e/bin/uautomizer-UnR33cPsHg/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8b66ba8-d9b4-4aed-94e5-1706cf25154e/bin/uautomizer-UnR33cPsHg/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8b66ba8-d9b4-4aed-94e5-1706cf25154e/bin/uautomizer-UnR33cPsHg/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8b66ba8-d9b4-4aed-94e5-1706cf25154e/bin/uautomizer-UnR33cPsHg/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1071.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8b66ba8-d9b4-4aed-94e5-1706cf25154e/bin/uautomizer-UnR33cPsHg/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8b66ba8-d9b4-4aed-94e5-1706cf25154e/bin/uautomizer-UnR33cPsHg --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 8753b765717c2fe536e6a90ddefcee5a9aeaabafbc1bd4d26f8bbeefc7c2c477 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-b2eff8b [2021-10-28 08:48:31,715 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 08:48:31,719 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 08:48:31,798 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 08:48:31,799 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 08:48:31,805 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 08:48:31,807 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 08:48:31,811 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 08:48:31,814 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 08:48:31,822 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 08:48:31,824 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 08:48:31,826 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 08:48:31,826 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 08:48:31,830 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 08:48:31,832 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 08:48:31,839 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 08:48:31,842 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 08:48:31,844 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 08:48:31,849 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 08:48:31,854 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 08:48:31,862 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 08:48:31,864 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 08:48:31,867 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 08:48:31,869 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 08:48:31,877 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 08:48:31,878 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 08:48:31,878 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 08:48:31,881 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 08:48:31,882 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 08:48:31,884 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 08:48:31,885 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 08:48:31,886 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 08:48:31,889 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 08:48:31,890 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 08:48:31,892 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 08:48:31,893 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 08:48:31,894 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 08:48:31,894 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 08:48:31,894 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 08:48:31,895 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 08:48:31,896 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 08:48:31,899 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8b66ba8-d9b4-4aed-94e5-1706cf25154e/bin/uautomizer-UnR33cPsHg/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-28 08:48:31,956 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 08:48:31,956 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 08:48:31,957 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 08:48:31,958 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 08:48:31,961 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 08:48:31,962 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 08:48:31,962 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 08:48:31,962 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 08:48:31,963 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 08:48:31,963 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 08:48:31,964 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 08:48:31,965 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 08:48:31,965 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-28 08:48:31,965 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-28 08:48:31,965 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-28 08:48:31,966 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 08:48:31,966 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-28 08:48:31,966 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 08:48:31,967 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-28 08:48:31,967 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 08:48:31,967 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 08:48:31,967 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-28 08:48:31,968 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 08:48:31,968 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 08:48:31,968 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-28 08:48:31,969 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-28 08:48:31,969 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-28 08:48:31,969 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-28 08:48:31,970 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-28 08:48:31,970 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-28 08:48:31,970 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-28 08:48:31,970 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 08:48:31,971 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_f8b66ba8-d9b4-4aed-94e5-1706cf25154e/bin/uautomizer-UnR33cPsHg/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8b66ba8-d9b4-4aed-94e5-1706cf25154e/bin/uautomizer-UnR33cPsHg Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8753b765717c2fe536e6a90ddefcee5a9aeaabafbc1bd4d26f8bbeefc7c2c477 [2021-10-28 08:48:32,275 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 08:48:32,308 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 08:48:32,311 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 08:48:32,313 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 08:48:32,314 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 08:48:32,315 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8b66ba8-d9b4-4aed-94e5-1706cf25154e/bin/uautomizer-UnR33cPsHg/../../sv-benchmarks/c/float-newlib/double_req_bl_1071.c [2021-10-28 08:48:32,393 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8b66ba8-d9b4-4aed-94e5-1706cf25154e/bin/uautomizer-UnR33cPsHg/data/99453ddad/25c372bd7c70461886f8644d951aac6f/FLAGea681f94e [2021-10-28 08:48:32,990 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 08:48:32,990 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8b66ba8-d9b4-4aed-94e5-1706cf25154e/sv-benchmarks/c/float-newlib/double_req_bl_1071.c [2021-10-28 08:48:33,006 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8b66ba8-d9b4-4aed-94e5-1706cf25154e/bin/uautomizer-UnR33cPsHg/data/99453ddad/25c372bd7c70461886f8644d951aac6f/FLAGea681f94e [2021-10-28 08:48:33,312 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8b66ba8-d9b4-4aed-94e5-1706cf25154e/bin/uautomizer-UnR33cPsHg/data/99453ddad/25c372bd7c70461886f8644d951aac6f [2021-10-28 08:48:33,315 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 08:48:33,317 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-28 08:48:33,319 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 08:48:33,320 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 08:48:33,324 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 08:48:33,325 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 08:48:33" (1/1) ... [2021-10-28 08:48:33,327 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a9b1328 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:48:33, skipping insertion in model container [2021-10-28 08:48:33,327 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 08:48:33" (1/1) ... [2021-10-28 08:48:33,336 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 08:48:33,354 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 08:48:33,589 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_f8b66ba8-d9b4-4aed-94e5-1706cf25154e/sv-benchmarks/c/float-newlib/double_req_bl_1071.c[1883,1896] [2021-10-28 08:48:33,592 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 08:48:33,603 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 08:48:33,631 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_f8b66ba8-d9b4-4aed-94e5-1706cf25154e/sv-benchmarks/c/float-newlib/double_req_bl_1071.c[1883,1896] [2021-10-28 08:48:33,632 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 08:48:33,649 INFO L208 MainTranslator]: Completed translation [2021-10-28 08:48:33,650 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:48:33 WrapperNode [2021-10-28 08:48:33,650 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 08:48:33,652 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-28 08:48:33,652 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-28 08:48:33,652 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-28 08:48:33,659 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:48:33" (1/1) ... [2021-10-28 08:48:33,666 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:48:33" (1/1) ... [2021-10-28 08:48:33,701 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-28 08:48:33,702 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 08:48:33,702 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 08:48:33,702 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 08:48:33,713 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:48:33" (1/1) ... [2021-10-28 08:48:33,713 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:48:33" (1/1) ... [2021-10-28 08:48:33,724 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:48:33" (1/1) ... [2021-10-28 08:48:33,724 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:48:33" (1/1) ... [2021-10-28 08:48:33,734 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:48:33" (1/1) ... [2021-10-28 08:48:33,741 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:48:33" (1/1) ... [2021-10-28 08:48:33,743 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:48:33" (1/1) ... [2021-10-28 08:48:33,746 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 08:48:33,748 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 08:48:33,748 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 08:48:33,758 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 08:48:33,759 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:48:33" (1/1) ... [2021-10-28 08:48:33,769 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 08:48:33,783 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8b66ba8-d9b4-4aed-94e5-1706cf25154e/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:48:33,797 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8b66ba8-d9b4-4aed-94e5-1706cf25154e/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-28 08:48:33,815 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8b66ba8-d9b4-4aed-94e5-1706cf25154e/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-28 08:48:33,863 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-28 08:48:33,864 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 08:48:33,864 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-10-28 08:48:33,864 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-28 08:48:33,865 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-10-28 08:48:33,865 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 08:48:33,865 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 08:48:33,865 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-28 08:48:33,865 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-28 08:48:34,307 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 08:48:34,308 INFO L299 CfgBuilder]: Removed 16 assume(true) statements. [2021-10-28 08:48:34,310 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 08:48:34 BoogieIcfgContainer [2021-10-28 08:48:34,310 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 08:48:34,313 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-28 08:48:34,313 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-28 08:48:34,321 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-28 08:48:34,322 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 08:48:33" (1/3) ... [2021-10-28 08:48:34,323 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16d9b7fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 08:48:34, skipping insertion in model container [2021-10-28 08:48:34,323 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:48:33" (2/3) ... [2021-10-28 08:48:34,324 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16d9b7fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 08:48:34, skipping insertion in model container [2021-10-28 08:48:34,325 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 08:48:34" (3/3) ... [2021-10-28 08:48:34,327 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1071.c [2021-10-28 08:48:34,334 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-28 08:48:34,334 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-28 08:48:34,411 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-28 08:48:34,423 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-28 08:48:34,424 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-28 08:48:34,445 INFO L276 IsEmpty]: Start isEmpty. Operand has 24 states, 22 states have (on average 1.6363636363636365) internal successors, (36), 23 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:48:34,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-28 08:48:34,462 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:48:34,463 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:48:34,464 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 08:48:34,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:48:34,474 INFO L85 PathProgramCache]: Analyzing trace with hash 166132434, now seen corresponding path program 1 times [2021-10-28 08:48:34,487 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:48:34,487 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1085806161] [2021-10-28 08:48:34,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:48:34,489 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:48:34,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:48:34,694 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:48:34,695 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:48:34,695 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1085806161] [2021-10-28 08:48:34,696 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1085806161] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:48:34,696 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:48:34,697 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-28 08:48:34,701 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015681319] [2021-10-28 08:48:34,710 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-28 08:48:34,710 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:48:34,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-28 08:48:34,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-28 08:48:34,734 INFO L87 Difference]: Start difference. First operand has 24 states, 22 states have (on average 1.6363636363636365) internal successors, (36), 23 states have internal predecessors, (36), 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) [2021-10-28 08:48:34,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:48:34,781 INFO L93 Difference]: Finished difference Result 46 states and 70 transitions. [2021-10-28 08:48:34,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-28 08:48:34,784 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 [2021-10-28 08:48:34,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:48:34,795 INFO L225 Difference]: With dead ends: 46 [2021-10-28 08:48:34,796 INFO L226 Difference]: Without dead ends: 21 [2021-10-28 08:48:34,800 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-28 08:48:34,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2021-10-28 08:48:34,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2021-10-28 08:48:34,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 20 states have (on average 1.2) internal successors, (24), 20 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:48:34,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 24 transitions. [2021-10-28 08:48:34,847 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 24 transitions. Word has length 11 [2021-10-28 08:48:34,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:48:34,849 INFO L470 AbstractCegarLoop]: Abstraction has 21 states and 24 transitions. [2021-10-28 08:48:34,849 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) [2021-10-28 08:48:34,849 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 24 transitions. [2021-10-28 08:48:34,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-28 08:48:34,851 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:48:34,851 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:48:34,851 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-28 08:48:34,852 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 08:48:34,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:48:34,856 INFO L85 PathProgramCache]: Analyzing trace with hash 786053359, now seen corresponding path program 1 times [2021-10-28 08:48:34,856 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:48:34,857 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175821103] [2021-10-28 08:48:34,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:48:34,857 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:48:34,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 08:48:34,944 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 08:48:34,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 08:48:35,014 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 08:48:35,016 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-10-28 08:48:35,018 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 08:48:35,022 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-28 08:48:35,026 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1] [2021-10-28 08:48:35,031 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-28 08:48:35,076 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 08:48:35 BoogieIcfgContainer [2021-10-28 08:48:35,077 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-28 08:48:35,078 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 08:48:35,078 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 08:48:35,078 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 08:48:35,079 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 08:48:34" (3/4) ... [2021-10-28 08:48:35,085 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-28 08:48:35,086 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 08:48:35,088 INFO L168 Benchmark]: Toolchain (without parser) took 1770.01 ms. Allocated memory was 94.4 MB in the beginning and 119.5 MB in the end (delta: 25.2 MB). Free memory was 63.3 MB in the beginning and 84.6 MB in the end (delta: -21.3 MB). Peak memory consumption was 3.5 MB. Max. memory is 16.1 GB. [2021-10-28 08:48:35,090 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 94.4 MB. Free memory is still 50.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 08:48:35,093 INFO L168 Benchmark]: CACSL2BoogieTranslator took 331.39 ms. Allocated memory was 94.4 MB in the beginning and 119.5 MB in the end (delta: 25.2 MB). Free memory was 63.1 MB in the beginning and 95.2 MB in the end (delta: -32.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-28 08:48:35,096 INFO L168 Benchmark]: Boogie Procedure Inliner took 49.47 ms. Allocated memory is still 119.5 MB. Free memory was 95.0 MB in the beginning and 93.4 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 08:48:35,104 INFO L168 Benchmark]: Boogie Preprocessor took 44.76 ms. Allocated memory is still 119.5 MB. Free memory was 93.4 MB in the beginning and 91.8 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 08:48:35,104 INFO L168 Benchmark]: RCFGBuilder took 562.98 ms. Allocated memory is still 119.5 MB. Free memory was 91.8 MB in the beginning and 79.6 MB in the end (delta: 12.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-28 08:48:35,105 INFO L168 Benchmark]: TraceAbstraction took 763.86 ms. Allocated memory is still 119.5 MB. Free memory was 79.2 MB in the beginning and 85.2 MB in the end (delta: -6.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 08:48:35,106 INFO L168 Benchmark]: Witness Printer took 8.22 ms. Allocated memory is still 119.5 MB. Free memory was 85.2 MB in the beginning and 84.6 MB in the end (delta: 563.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 08:48:35,115 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 94.4 MB. Free memory is still 50.9 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 331.39 ms. Allocated memory was 94.4 MB in the beginning and 119.5 MB in the end (delta: 25.2 MB). Free memory was 63.1 MB in the beginning and 95.2 MB in the end (delta: -32.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 49.47 ms. Allocated memory is still 119.5 MB. Free memory was 95.0 MB in the beginning and 93.4 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 44.76 ms. Allocated memory is still 119.5 MB. Free memory was 93.4 MB in the beginning and 91.8 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 562.98 ms. Allocated memory is still 119.5 MB. Free memory was 91.8 MB in the beginning and 79.6 MB in the end (delta: 12.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 763.86 ms. Allocated memory is still 119.5 MB. Free memory was 79.2 MB in the beginning and 85.2 MB in the end (delta: -6.0 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 8.22 ms. Allocated memory is still 119.5 MB. Free memory was 85.2 MB in the beginning and 84.6 MB in the end (delta: 563.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 76]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 17, overapproximation of someBinaryArithmeticDOUBLEoperation at line 51, overapproximation of bitwiseAnd at line 30. Possible FailurePath: [L70] double x = 0.0 / 0.0; [L20] int signbit; [L21] int msw; [L22] unsigned int lsw; [L23] int exponent_less_1023; [L25] ieee_double_shape_type ew_u; [L26] ew_u.value = (x) [L27] EXPR ew_u.parts.msw [L27] (msw) = ew_u.parts.msw [L28] EXPR ew_u.parts.lsw [L28] (lsw) = ew_u.parts.lsw [L30] signbit = msw & 0x80000000 [L31] exponent_less_1023 = ((msw & 0x7ff00000) >> 20) - 1023 [L32] COND FALSE !(exponent_less_1023 < 20) [L49] COND TRUE exponent_less_1023 > 51 [L50] COND TRUE exponent_less_1023 == 1024 [L51] return x + x; [L72] double res = trunc_double(x); [L17] return x != x; [L75] COND TRUE !isnan_double(res) [L76] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 24 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.6s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 27 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=24occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.0s 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 [2021-10-28 08:48:35,171 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8b66ba8-d9b4-4aed-94e5-1706cf25154e/bin/uautomizer-UnR33cPsHg/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-b2eff8b [2021-10-28 08:48:37,722 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 08:48:37,724 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 08:48:37,756 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 08:48:37,757 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 08:48:37,758 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 08:48:37,760 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 08:48:37,763 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 08:48:37,765 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 08:48:37,766 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 08:48:37,767 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 08:48:37,769 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 08:48:37,769 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 08:48:37,771 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 08:48:37,772 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 08:48:37,774 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 08:48:37,775 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 08:48:37,776 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 08:48:37,778 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 08:48:37,781 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 08:48:37,783 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 08:48:37,784 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 08:48:37,786 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 08:48:37,787 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 08:48:37,791 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 08:48:37,791 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 08:48:37,792 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 08:48:37,793 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 08:48:37,794 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 08:48:37,795 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 08:48:37,796 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 08:48:37,809 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 08:48:37,810 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 08:48:37,811 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 08:48:37,812 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 08:48:37,813 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 08:48:37,814 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 08:48:37,814 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 08:48:37,815 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 08:48:37,816 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 08:48:37,816 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 08:48:37,817 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8b66ba8-d9b4-4aed-94e5-1706cf25154e/bin/uautomizer-UnR33cPsHg/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-10-28 08:48:37,855 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 08:48:37,855 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 08:48:37,856 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 08:48:37,856 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 08:48:37,858 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 08:48:37,858 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 08:48:37,858 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 08:48:37,858 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 08:48:37,859 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 08:48:37,859 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 08:48:37,860 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 08:48:37,860 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-28 08:48:37,860 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-28 08:48:37,860 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-28 08:48:37,860 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-28 08:48:37,861 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-28 08:48:37,861 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 08:48:37,861 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-28 08:48:37,861 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 08:48:37,861 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-28 08:48:37,862 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 08:48:37,862 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 08:48:37,862 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-28 08:48:37,862 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 08:48:37,862 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 08:48:37,863 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-28 08:48:37,863 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-28 08:48:37,863 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-10-28 08:48:37,863 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-28 08:48:37,863 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-28 08:48:37,863 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-28 08:48:37,864 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-28 08:48:37,864 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 08:48:37,864 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-28 08:48:37,864 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_f8b66ba8-d9b4-4aed-94e5-1706cf25154e/bin/uautomizer-UnR33cPsHg/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8b66ba8-d9b4-4aed-94e5-1706cf25154e/bin/uautomizer-UnR33cPsHg Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8753b765717c2fe536e6a90ddefcee5a9aeaabafbc1bd4d26f8bbeefc7c2c477 [2021-10-28 08:48:38,281 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 08:48:38,301 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 08:48:38,304 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 08:48:38,305 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 08:48:38,306 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 08:48:38,307 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8b66ba8-d9b4-4aed-94e5-1706cf25154e/bin/uautomizer-UnR33cPsHg/../../sv-benchmarks/c/float-newlib/double_req_bl_1071.c [2021-10-28 08:48:38,379 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8b66ba8-d9b4-4aed-94e5-1706cf25154e/bin/uautomizer-UnR33cPsHg/data/faeae789f/228ad574824043b884bce773beafcc3c/FLAGee3ca00cf [2021-10-28 08:48:38,912 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 08:48:38,913 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8b66ba8-d9b4-4aed-94e5-1706cf25154e/sv-benchmarks/c/float-newlib/double_req_bl_1071.c [2021-10-28 08:48:38,923 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8b66ba8-d9b4-4aed-94e5-1706cf25154e/bin/uautomizer-UnR33cPsHg/data/faeae789f/228ad574824043b884bce773beafcc3c/FLAGee3ca00cf [2021-10-28 08:48:39,275 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8b66ba8-d9b4-4aed-94e5-1706cf25154e/bin/uautomizer-UnR33cPsHg/data/faeae789f/228ad574824043b884bce773beafcc3c [2021-10-28 08:48:39,278 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 08:48:39,280 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-28 08:48:39,283 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 08:48:39,283 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 08:48:39,287 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 08:48:39,288 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 08:48:39" (1/1) ... [2021-10-28 08:48:39,290 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1bf64b76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:48:39, skipping insertion in model container [2021-10-28 08:48:39,290 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 08:48:39" (1/1) ... [2021-10-28 08:48:39,299 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 08:48:39,319 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 08:48:39,482 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_f8b66ba8-d9b4-4aed-94e5-1706cf25154e/sv-benchmarks/c/float-newlib/double_req_bl_1071.c[1883,1896] [2021-10-28 08:48:39,509 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 08:48:39,526 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 08:48:39,589 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_f8b66ba8-d9b4-4aed-94e5-1706cf25154e/sv-benchmarks/c/float-newlib/double_req_bl_1071.c[1883,1896] [2021-10-28 08:48:39,590 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 08:48:39,614 INFO L208 MainTranslator]: Completed translation [2021-10-28 08:48:39,615 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:48:39 WrapperNode [2021-10-28 08:48:39,615 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 08:48:39,616 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-28 08:48:39,616 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-28 08:48:39,616 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-28 08:48:39,623 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:48:39" (1/1) ... [2021-10-28 08:48:39,633 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:48:39" (1/1) ... [2021-10-28 08:48:39,654 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-28 08:48:39,655 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 08:48:39,655 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 08:48:39,656 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 08:48:39,663 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:48:39" (1/1) ... [2021-10-28 08:48:39,664 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:48:39" (1/1) ... [2021-10-28 08:48:39,675 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:48:39" (1/1) ... [2021-10-28 08:48:39,676 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:48:39" (1/1) ... [2021-10-28 08:48:39,692 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:48:39" (1/1) ... [2021-10-28 08:48:39,703 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:48:39" (1/1) ... [2021-10-28 08:48:39,711 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:48:39" (1/1) ... [2021-10-28 08:48:39,720 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 08:48:39,721 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 08:48:39,721 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 08:48:39,721 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 08:48:39,722 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:48:39" (1/1) ... [2021-10-28 08:48:39,729 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 08:48:39,740 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8b66ba8-d9b4-4aed-94e5-1706cf25154e/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:48:39,751 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8b66ba8-d9b4-4aed-94e5-1706cf25154e/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-28 08:48:39,779 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8b66ba8-d9b4-4aed-94e5-1706cf25154e/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-28 08:48:39,803 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2021-10-28 08:48:39,804 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2021-10-28 08:48:39,804 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-28 08:48:39,804 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 08:48:39,804 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-28 08:48:39,804 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 08:48:39,804 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 08:48:39,805 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-28 08:48:39,805 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-28 08:48:40,271 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 08:48:40,272 INFO L299 CfgBuilder]: Removed 16 assume(true) statements. [2021-10-28 08:48:40,273 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 08:48:40 BoogieIcfgContainer [2021-10-28 08:48:40,274 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 08:48:40,276 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-28 08:48:40,276 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-28 08:48:40,279 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-28 08:48:40,279 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 08:48:39" (1/3) ... [2021-10-28 08:48:40,280 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f497238 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 08:48:40, skipping insertion in model container [2021-10-28 08:48:40,280 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:48:39" (2/3) ... [2021-10-28 08:48:40,280 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f497238 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 08:48:40, skipping insertion in model container [2021-10-28 08:48:40,281 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 08:48:40" (3/3) ... [2021-10-28 08:48:40,282 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1071.c [2021-10-28 08:48:40,287 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-28 08:48:40,287 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-28 08:48:40,349 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-28 08:48:40,360 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-28 08:48:40,360 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-28 08:48:40,379 INFO L276 IsEmpty]: Start isEmpty. Operand has 24 states, 22 states have (on average 1.6363636363636365) internal successors, (36), 23 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:48:40,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-28 08:48:40,384 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:48:40,384 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:48:40,385 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 08:48:40,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:48:40,392 INFO L85 PathProgramCache]: Analyzing trace with hash 166132434, now seen corresponding path program 1 times [2021-10-28 08:48:40,405 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 08:48:40,405 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1190243689] [2021-10-28 08:48:40,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:48:40,407 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 08:48:40,407 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8b66ba8-d9b4-4aed-94e5-1706cf25154e/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 08:48:40,410 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8b66ba8-d9b4-4aed-94e5-1706cf25154e/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 08:48:40,450 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8b66ba8-d9b4-4aed-94e5-1706cf25154e/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-28 08:48:40,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:48:40,580 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-28 08:48:40,584 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 08:48:40,660 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:48:40,660 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 08:48:40,712 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:48:40,713 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 08:48:40,713 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1190243689] [2021-10-28 08:48:40,714 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1190243689] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 08:48:40,714 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:48:40,715 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-28 08:48:40,716 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805372667] [2021-10-28 08:48:40,720 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-28 08:48:40,721 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 08:48:40,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-28 08:48:40,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-28 08:48:40,751 INFO L87 Difference]: Start difference. First operand has 24 states, 22 states have (on average 1.6363636363636365) internal successors, (36), 23 states have internal predecessors, (36), 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) [2021-10-28 08:48:40,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:48:40,766 INFO L93 Difference]: Finished difference Result 46 states and 70 transitions. [2021-10-28 08:48:40,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-28 08:48:40,767 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 [2021-10-28 08:48:40,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:48:40,776 INFO L225 Difference]: With dead ends: 46 [2021-10-28 08:48:40,776 INFO L226 Difference]: Without dead ends: 21 [2021-10-28 08:48:40,779 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-28 08:48:40,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2021-10-28 08:48:40,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2021-10-28 08:48:40,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 20 states have (on average 1.2) internal successors, (24), 20 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:48:40,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 24 transitions. [2021-10-28 08:48:40,809 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 24 transitions. Word has length 11 [2021-10-28 08:48:40,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:48:40,810 INFO L470 AbstractCegarLoop]: Abstraction has 21 states and 24 transitions. [2021-10-28 08:48:40,810 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) [2021-10-28 08:48:40,810 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 24 transitions. [2021-10-28 08:48:40,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-28 08:48:40,811 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:48:40,811 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:48:40,829 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8b66ba8-d9b4-4aed-94e5-1706cf25154e/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-28 08:48:41,026 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8b66ba8-d9b4-4aed-94e5-1706cf25154e/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 08:48:41,026 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 08:48:41,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:48:41,027 INFO L85 PathProgramCache]: Analyzing trace with hash 786053359, now seen corresponding path program 1 times [2021-10-28 08:48:41,028 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 08:48:41,028 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1986731105] [2021-10-28 08:48:41,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:48:41,029 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 08:48:41,029 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8b66ba8-d9b4-4aed-94e5-1706cf25154e/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 08:48:41,033 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8b66ba8-d9b4-4aed-94e5-1706cf25154e/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 08:48:41,035 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8b66ba8-d9b4-4aed-94e5-1706cf25154e/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-28 08:48:41,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:48:41,164 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-28 08:48:41,165 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 08:48:41,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:48:41,473 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 08:48:43,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:48:43,702 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 08:48:43,702 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1986731105] [2021-10-28 08:48:43,703 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1986731105] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 08:48:43,703 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:48:43,703 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2021-10-28 08:48:43,703 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095226061] [2021-10-28 08:48:43,704 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-28 08:48:43,704 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 08:48:43,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-28 08:48:43,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-10-28 08:48:43,705 INFO L87 Difference]: Start difference. First operand 21 states and 24 transitions. Second operand has 10 states, 10 states have (on average 2.3) internal successors, (23), 10 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:48:44,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:48:44,428 INFO L93 Difference]: Finished difference Result 27 states and 29 transitions. [2021-10-28 08:48:44,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-28 08:48:44,429 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.3) internal successors, (23), 10 states have internal predecessors, (23), 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 [2021-10-28 08:48:44,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:48:44,430 INFO L225 Difference]: With dead ends: 27 [2021-10-28 08:48:44,430 INFO L226 Difference]: Without dead ends: 20 [2021-10-28 08:48:44,431 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-10-28 08:48:44,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2021-10-28 08:48:44,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2021-10-28 08:48:44,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 19 states have (on average 1.105263157894737) internal successors, (21), 19 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:48:44,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 21 transitions. [2021-10-28 08:48:44,435 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 21 transitions. Word has length 12 [2021-10-28 08:48:44,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:48:44,436 INFO L470 AbstractCegarLoop]: Abstraction has 20 states and 21 transitions. [2021-10-28 08:48:44,436 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.3) internal successors, (23), 10 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:48:44,436 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 21 transitions. [2021-10-28 08:48:44,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-28 08:48:44,437 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:48:44,437 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:48:44,455 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8b66ba8-d9b4-4aed-94e5-1706cf25154e/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-28 08:48:44,648 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8b66ba8-d9b4-4aed-94e5-1706cf25154e/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 08:48:44,649 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 08:48:44,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:48:44,649 INFO L85 PathProgramCache]: Analyzing trace with hash 1398618101, now seen corresponding path program 1 times [2021-10-28 08:48:44,650 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 08:48:44,650 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [749836735] [2021-10-28 08:48:44,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:48:44,650 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 08:48:44,651 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8b66ba8-d9b4-4aed-94e5-1706cf25154e/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 08:48:44,652 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8b66ba8-d9b4-4aed-94e5-1706cf25154e/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 08:48:44,656 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8b66ba8-d9b4-4aed-94e5-1706cf25154e/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-28 08:48:44,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:48:44,759 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-28 08:48:44,761 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 08:48:45,213 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:48:45,213 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 08:48:45,512 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:48:45,512 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 08:48:45,513 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [749836735] [2021-10-28 08:48:45,513 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [749836735] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 08:48:45,513 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:48:45,513 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 6] imperfect sequences [] total 9 [2021-10-28 08:48:45,514 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619287231] [2021-10-28 08:48:45,514 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-28 08:48:45,515 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 08:48:45,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-28 08:48:45,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2021-10-28 08:48:45,518 INFO L87 Difference]: Start difference. First operand 20 states and 21 transitions. Second operand has 9 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 9 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) [2021-10-28 08:48:45,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:48:45,748 INFO L93 Difference]: Finished difference Result 20 states and 21 transitions. [2021-10-28 08:48:45,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-28 08:48:45,750 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 9 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 14 [2021-10-28 08:48:45,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:48:45,750 INFO L225 Difference]: With dead ends: 20 [2021-10-28 08:48:45,751 INFO L226 Difference]: Without dead ends: 0 [2021-10-28 08:48:45,751 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-10-28 08:48:45,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-28 08:48:45,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-28 08:48:45,752 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) [2021-10-28 08:48:45,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-28 08:48:45,752 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 14 [2021-10-28 08:48:45,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:48:45,752 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-28 08:48:45,752 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 9 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) [2021-10-28 08:48:45,753 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-28 08:48:45,753 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-28 08:48:45,755 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 08:48:45,770 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8b66ba8-d9b4-4aed-94e5-1706cf25154e/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-28 08:48:45,956 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8b66ba8-d9b4-4aed-94e5-1706cf25154e/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 08:48:45,958 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-28 08:48:45,961 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 08:48:45,991 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 08:48:45,993 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 08:48:45,995 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 08:48:45,998 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 08:48:45,999 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 08:48:46,000 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 08:48:46,070 INFO L857 garLoopResultBuilder]: For program point L32(lines 32 60) no Hoare annotation was computed. [2021-10-28 08:48:46,070 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-10-28 08:48:46,070 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-28 08:48:46,070 INFO L853 garLoopResultBuilder]: At program point L61(lines 19 62) the Hoare annotation is: (and (= (let ((.cse0 (fp.div roundNearestTiesToEven (_ +zero 11 53) (_ +zero 11 53)))) (fp.add roundNearestTiesToEven .cse0 .cse0)) |ULTIMATE.start_trunc_double_#res|) (= currentRoundingMode roundNearestTiesToEven) (= ULTIMATE.start_trunc_double_~x (fp.div currentRoundingMode (_ +zero 11 53) (_ +zero 11 53)))) [2021-10-28 08:48:46,070 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-10-28 08:48:46,071 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 76) no Hoare annotation was computed. [2021-10-28 08:48:46,071 INFO L857 garLoopResultBuilder]: For program point L24-1(lines 24 29) no Hoare annotation was computed. [2021-10-28 08:48:46,071 INFO L853 garLoopResultBuilder]: At program point L24-2(lines 24 29) the Hoare annotation is: (and (= currentRoundingMode roundNearestTiesToEven) (= ULTIMATE.start_trunc_double_~x (fp.div currentRoundingMode (_ +zero 11 53) (_ +zero 11 53)))) [2021-10-28 08:48:46,071 INFO L857 garLoopResultBuilder]: For program point L24-3(lines 24 29) no Hoare annotation was computed. [2021-10-28 08:48:46,071 INFO L857 garLoopResultBuilder]: For program point L49(lines 49 60) no Hoare annotation was computed. [2021-10-28 08:48:46,071 INFO L857 garLoopResultBuilder]: For program point L41-1(lines 41 47) no Hoare annotation was computed. [2021-10-28 08:48:46,072 INFO L853 garLoopResultBuilder]: At program point L41-2(lines 41 47) the Hoare annotation is: false [2021-10-28 08:48:46,072 INFO L857 garLoopResultBuilder]: For program point L33(lines 33 48) no Hoare annotation was computed. [2021-10-28 08:48:46,072 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-28 08:48:46,072 INFO L857 garLoopResultBuilder]: For program point L54-1(lines 54 59) no Hoare annotation was computed. [2021-10-28 08:48:46,072 INFO L853 garLoopResultBuilder]: At program point L54-2(lines 54 59) the Hoare annotation is: false [2021-10-28 08:48:46,072 INFO L857 garLoopResultBuilder]: For program point L54-3(lines 32 60) no Hoare annotation was computed. [2021-10-28 08:48:46,073 INFO L857 garLoopResultBuilder]: For program point L50(lines 50 52) no Hoare annotation was computed. [2021-10-28 08:48:46,073 INFO L853 garLoopResultBuilder]: At program point L17(line 17) the Hoare annotation is: (and (= (_ bv1 32) |ULTIMATE.start_isnan_double_#res|) (= (let ((.cse0 (fp.div roundNearestTiesToEven (_ +zero 11 53) (_ +zero 11 53)))) (fp.add roundNearestTiesToEven .cse0 .cse0)) |ULTIMATE.start_trunc_double_#res|) (= currentRoundingMode roundNearestTiesToEven) (= ULTIMATE.start_trunc_double_~x (fp.div currentRoundingMode (_ +zero 11 53) (_ +zero 11 53)))) [2021-10-28 08:48:46,073 INFO L857 garLoopResultBuilder]: For program point L75(lines 75 78) no Hoare annotation was computed. [2021-10-28 08:48:46,073 INFO L857 garLoopResultBuilder]: For program point L34-1(lines 34 39) no Hoare annotation was computed. [2021-10-28 08:48:46,073 INFO L853 garLoopResultBuilder]: At program point L34-2(lines 34 39) the Hoare annotation is: false [2021-10-28 08:48:46,074 INFO L860 garLoopResultBuilder]: At program point L80(lines 64 81) the Hoare annotation is: true [2021-10-28 08:48:46,074 INFO L857 garLoopResultBuilder]: For program point L76(line 76) no Hoare annotation was computed. [2021-10-28 08:48:46,077 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2021-10-28 08:48:46,078 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-28 08:48:46,085 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-28 08:48:46,086 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-28 08:48:46,086 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-28 08:48:46,086 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-28 08:48:46,090 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-28 08:48:46,090 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-28 08:48:46,091 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-28 08:48:46,091 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-28 08:48:46,092 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-28 08:48:46,092 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-28 08:48:46,093 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-28 08:48:46,093 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-28 08:48:46,093 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-28 08:48:46,093 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-28 08:48:46,094 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-28 08:48:46,094 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-28 08:48:46,094 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-28 08:48:46,094 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-28 08:48:46,095 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 08:48:46 BoogieIcfgContainer [2021-10-28 08:48:46,095 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-28 08:48:46,096 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 08:48:46,096 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 08:48:46,096 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 08:48:46,096 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 08:48:40" (3/4) ... [2021-10-28 08:48:46,099 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-28 08:48:46,110 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2021-10-28 08:48:46,110 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2021-10-28 08:48:46,111 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-10-28 08:48:46,111 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-28 08:48:46,135 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (~fp.add~DOUBLE(~roundNearestTiesToEven, ~fp.div~DOUBLE(~roundNearestTiesToEven, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()), ~fp.div~DOUBLE(~roundNearestTiesToEven, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE())) == \result && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven) && x == ~fp.div~DOUBLE(unknown-currentRoundingMode-unknown, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) [2021-10-28 08:48:46,136 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((1bv32 == \result && ~fp.add~DOUBLE(~roundNearestTiesToEven, ~fp.div~DOUBLE(~roundNearestTiesToEven, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()), ~fp.div~DOUBLE(~roundNearestTiesToEven, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE())) == \result) && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven) && x == ~fp.div~DOUBLE(unknown-currentRoundingMode-unknown, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) [2021-10-28 08:48:46,158 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8b66ba8-d9b4-4aed-94e5-1706cf25154e/bin/uautomizer-UnR33cPsHg/witness.graphml [2021-10-28 08:48:46,158 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 08:48:46,160 INFO L168 Benchmark]: Toolchain (without parser) took 6878.82 ms. Allocated memory was 58.7 MB in the beginning and 79.7 MB in the end (delta: 21.0 MB). Free memory was 36.6 MB in the beginning and 45.5 MB in the end (delta: -8.9 MB). Peak memory consumption was 12.4 MB. Max. memory is 16.1 GB. [2021-10-28 08:48:46,160 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 58.7 MB. Free memory was 38.7 MB in the beginning and 38.6 MB in the end (delta: 38.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 08:48:46,161 INFO L168 Benchmark]: CACSL2BoogieTranslator took 331.88 ms. Allocated memory is still 58.7 MB. Free memory was 36.4 MB in the beginning and 39.5 MB in the end (delta: -3.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-28 08:48:46,161 INFO L168 Benchmark]: Boogie Procedure Inliner took 38.81 ms. Allocated memory is still 58.7 MB. Free memory was 39.5 MB in the beginning and 37.9 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 08:48:46,162 INFO L168 Benchmark]: Boogie Preprocessor took 65.09 ms. Allocated memory is still 58.7 MB. Free memory was 37.8 MB in the beginning and 36.2 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 08:48:46,162 INFO L168 Benchmark]: RCFGBuilder took 552.77 ms. Allocated memory is still 58.7 MB. Free memory was 36.2 MB in the beginning and 38.6 MB in the end (delta: -2.4 MB). Peak memory consumption was 14.5 MB. Max. memory is 16.1 GB. [2021-10-28 08:48:46,163 INFO L168 Benchmark]: TraceAbstraction took 5819.67 ms. Allocated memory was 58.7 MB in the beginning and 79.7 MB in the end (delta: 21.0 MB). Free memory was 38.2 MB in the beginning and 48.6 MB in the end (delta: -10.5 MB). Peak memory consumption was 11.6 MB. Max. memory is 16.1 GB. [2021-10-28 08:48:46,164 INFO L168 Benchmark]: Witness Printer took 62.67 ms. Allocated memory is still 79.7 MB. Free memory was 48.6 MB in the beginning and 45.5 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-28 08:48:46,166 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 58.7 MB. Free memory was 38.7 MB in the beginning and 38.6 MB in the end (delta: 38.7 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 331.88 ms. Allocated memory is still 58.7 MB. Free memory was 36.4 MB in the beginning and 39.5 MB in the end (delta: -3.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 38.81 ms. Allocated memory is still 58.7 MB. Free memory was 39.5 MB in the beginning and 37.9 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 65.09 ms. Allocated memory is still 58.7 MB. Free memory was 37.8 MB in the beginning and 36.2 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 552.77 ms. Allocated memory is still 58.7 MB. Free memory was 36.2 MB in the beginning and 38.6 MB in the end (delta: -2.4 MB). Peak memory consumption was 14.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 5819.67 ms. Allocated memory was 58.7 MB in the beginning and 79.7 MB in the end (delta: 21.0 MB). Free memory was 38.2 MB in the beginning and 48.6 MB in the end (delta: -10.5 MB). Peak memory consumption was 11.6 MB. Max. memory is 16.1 GB. * Witness Printer took 62.67 ms. Allocated memory is still 79.7 MB. Free memory was 48.6 MB in the beginning and 45.5 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 76]: 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, 24 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 5.7s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 48 SDtfs, 38 SDslu, 93 SDs, 0 SdLazy, 47 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 73 GetRequests, 51 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 1.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=24occurred in iteration=0, InterpolantAutomatonStates: 14, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 7 PreInvPairs, 11 NumberOfFragments, 61 HoareAnnotationTreeSize, 7 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 7 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 3.4s InterpolantComputationTime, 37 NumberOfCodeBlocks, 37 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 68 ConstructedInterpolants, 6 QuantifiedInterpolants, 401 SizeOfPredicates, 17 NumberOfNonLiveVariables, 142 ConjunctsInSsa, 21 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 [2021-10-28 08:48:46,180 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-28 08:48:46,181 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-28 08:48:46,181 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-28 08:48:46,181 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-28 08:48:46,181 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-28 08:48:46,182 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-28 08:48:46,182 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-28 08:48:46,182 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven Derived loop invariant: ((1bv32 == \result && ~fp.add~DOUBLE(~roundNearestTiesToEven, ~fp.div~DOUBLE(~roundNearestTiesToEven, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()), ~fp.div~DOUBLE(~roundNearestTiesToEven, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE())) == \result) && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven) && x == ~fp.div~DOUBLE(unknown-currentRoundingMode-unknown, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) - InvariantResult [Line: 54]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 24]: Loop Invariant [2021-10-28 08:48:46,182 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-28 08:48:46,183 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven Derived loop invariant: unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven && x == ~fp.div~DOUBLE(unknown-currentRoundingMode-unknown, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) - InvariantResult [Line: 19]: Loop Invariant [2021-10-28 08:48:46,183 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-28 08:48:46,183 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-28 08:48:46,183 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-28 08:48:46,184 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-28 08:48:46,184 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-28 08:48:46,184 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-28 08:48:46,184 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-28 08:48:46,184 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven Derived loop invariant: (~fp.add~DOUBLE(~roundNearestTiesToEven, ~fp.div~DOUBLE(~roundNearestTiesToEven, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()), ~fp.div~DOUBLE(~roundNearestTiesToEven, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE())) == \result && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven) && x == ~fp.div~DOUBLE(unknown-currentRoundingMode-unknown, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) - InvariantResult [Line: 34]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 41]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 64]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2021-10-28 08:48:46,237 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8b66ba8-d9b4-4aed-94e5-1706cf25154e/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...