./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/double_req_bl_1210.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e77c044 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5805093-8c75-40f3-a345-2731a8f19ad6/bin/utaipan-q2qaUkNPG8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5805093-8c75-40f3-a345-2731a8f19ad6/bin/utaipan-q2qaUkNPG8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5805093-8c75-40f3-a345-2731a8f19ad6/bin/utaipan-q2qaUkNPG8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5805093-8c75-40f3-a345-2731a8f19ad6/bin/utaipan-q2qaUkNPG8/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1210.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5805093-8c75-40f3-a345-2731a8f19ad6/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5805093-8c75-40f3-a345-2731a8f19ad6/bin/utaipan-q2qaUkNPG8 --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 85e5b86abce931d95696fba33e25199d528f9f0e ........................................................................................................................................................................................................................................................................................................................... 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_b5805093-8c75-40f3-a345-2731a8f19ad6/bin/utaipan-q2qaUkNPG8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5805093-8c75-40f3-a345-2731a8f19ad6/bin/utaipan-q2qaUkNPG8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5805093-8c75-40f3-a345-2731a8f19ad6/bin/utaipan-q2qaUkNPG8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5805093-8c75-40f3-a345-2731a8f19ad6/bin/utaipan-q2qaUkNPG8/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1210.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5805093-8c75-40f3-a345-2731a8f19ad6/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5805093-8c75-40f3-a345-2731a8f19ad6/bin/utaipan-q2qaUkNPG8 --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 85e5b86abce931d95696fba33e25199d528f9f0e .............................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-4e77c04 [2021-10-13 08:07:39,925 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 08:07:39,928 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 08:07:39,979 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 08:07:39,979 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 08:07:39,980 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 08:07:39,982 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 08:07:39,985 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 08:07:39,987 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 08:07:39,988 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 08:07:39,989 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 08:07:39,991 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 08:07:39,991 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 08:07:39,992 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 08:07:39,994 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 08:07:39,996 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 08:07:39,997 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 08:07:39,998 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 08:07:40,001 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 08:07:40,003 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 08:07:40,005 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 08:07:40,007 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 08:07:40,008 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 08:07:40,009 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 08:07:40,013 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 08:07:40,014 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 08:07:40,014 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 08:07:40,015 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 08:07:40,016 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 08:07:40,021 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 08:07:40,022 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 08:07:40,023 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 08:07:40,025 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 08:07:40,027 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 08:07:40,029 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 08:07:40,029 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 08:07:40,030 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 08:07:40,030 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 08:07:40,031 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 08:07:40,032 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 08:07:40,032 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 08:07:40,033 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5805093-8c75-40f3-a345-2731a8f19ad6/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-13 08:07:40,067 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 08:07:40,069 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 08:07:40,071 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-13 08:07:40,071 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-13 08:07:40,071 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-13 08:07:40,072 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-13 08:07:40,072 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-13 08:07:40,074 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-13 08:07:40,074 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-13 08:07:40,074 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-13 08:07:40,075 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-13 08:07:40,076 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-13 08:07:40,076 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-13 08:07:40,076 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-13 08:07:40,077 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-13 08:07:40,077 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 08:07:40,078 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 08:07:40,078 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 08:07:40,078 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 08:07:40,078 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 08:07:40,079 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 08:07:40,079 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 08:07:40,079 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 08:07:40,079 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-13 08:07:40,080 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 08:07:40,080 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 08:07:40,080 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 08:07:40,080 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 08:07:40,081 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 08:07:40,082 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 08:07:40,082 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 08:07:40,083 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 08:07:40,083 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 08:07:40,083 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 08:07:40,084 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-13 08:07:40,084 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-13 08:07:40,084 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 08:07:40,084 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 08:07:40,085 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-13 08:07:40,085 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_b5805093-8c75-40f3-a345-2731a8f19ad6/bin/utaipan-q2qaUkNPG8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5805093-8c75-40f3-a345-2731a8f19ad6/bin/utaipan-q2qaUkNPG8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 85e5b86abce931d95696fba33e25199d528f9f0e [2021-10-13 08:07:40,406 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 08:07:40,463 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 08:07:40,465 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 08:07:40,466 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 08:07:40,467 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 08:07:40,468 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5805093-8c75-40f3-a345-2731a8f19ad6/bin/utaipan-q2qaUkNPG8/../../sv-benchmarks/c/float-newlib/double_req_bl_1210.c [2021-10-13 08:07:40,547 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5805093-8c75-40f3-a345-2731a8f19ad6/bin/utaipan-q2qaUkNPG8/data/9e5a59c3c/10d8665119e1481596488bcf5435b042/FLAGb607364ed [2021-10-13 08:07:41,006 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 08:07:41,013 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5805093-8c75-40f3-a345-2731a8f19ad6/sv-benchmarks/c/float-newlib/double_req_bl_1210.c [2021-10-13 08:07:41,028 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5805093-8c75-40f3-a345-2731a8f19ad6/bin/utaipan-q2qaUkNPG8/data/9e5a59c3c/10d8665119e1481596488bcf5435b042/FLAGb607364ed [2021-10-13 08:07:41,369 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5805093-8c75-40f3-a345-2731a8f19ad6/bin/utaipan-q2qaUkNPG8/data/9e5a59c3c/10d8665119e1481596488bcf5435b042 [2021-10-13 08:07:41,371 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 08:07:41,372 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 08:07:41,374 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 08:07:41,374 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 08:07:41,378 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 08:07:41,378 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 08:07:41" (1/1) ... [2021-10-13 08:07:41,379 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f7e9c39 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:07:41, skipping insertion in model container [2021-10-13 08:07:41,380 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 08:07:41" (1/1) ... [2021-10-13 08:07:41,387 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 08:07:41,407 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 08:07:41,602 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_b5805093-8c75-40f3-a345-2731a8f19ad6/sv-benchmarks/c/float-newlib/double_req_bl_1210.c[3091,3104] [2021-10-13 08:07:41,605 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 08:07:41,614 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 08:07:41,649 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_b5805093-8c75-40f3-a345-2731a8f19ad6/sv-benchmarks/c/float-newlib/double_req_bl_1210.c[3091,3104] [2021-10-13 08:07:41,651 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 08:07:41,665 INFO L208 MainTranslator]: Completed translation [2021-10-13 08:07:41,665 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:07:41 WrapperNode [2021-10-13 08:07:41,666 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 08:07:41,667 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 08:07:41,667 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 08:07:41,667 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 08:07:41,675 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:07:41" (1/1) ... [2021-10-13 08:07:41,699 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:07:41" (1/1) ... [2021-10-13 08:07:41,730 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 08:07:41,734 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 08:07:41,734 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 08:07:41,734 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 08:07:41,744 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:07:41" (1/1) ... [2021-10-13 08:07:41,744 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:07:41" (1/1) ... [2021-10-13 08:07:41,759 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:07:41" (1/1) ... [2021-10-13 08:07:41,759 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:07:41" (1/1) ... [2021-10-13 08:07:41,770 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:07:41" (1/1) ... [2021-10-13 08:07:41,796 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:07:41" (1/1) ... [2021-10-13 08:07:41,798 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:07:41" (1/1) ... [2021-10-13 08:07:41,802 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 08:07:41,803 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 08:07:41,803 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 08:07:41,803 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 08:07:41,812 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:07:41" (1/1) ... [2021-10-13 08:07:41,819 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 08:07:41,830 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5805093-8c75-40f3-a345-2731a8f19ad6/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 08:07:41,850 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5805093-8c75-40f3-a345-2731a8f19ad6/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 08:07:41,880 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5805093-8c75-40f3-a345-2731a8f19ad6/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 08:07:41,911 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-13 08:07:41,911 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 08:07:41,912 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-10-13 08:07:41,912 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-13 08:07:41,913 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-10-13 08:07:41,913 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 08:07:41,913 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 08:07:41,914 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-13 08:07:41,914 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-13 08:07:42,457 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 08:07:42,458 INFO L299 CfgBuilder]: Removed 30 assume(true) statements. [2021-10-13 08:07:42,460 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 08:07:42 BoogieIcfgContainer [2021-10-13 08:07:42,461 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 08:07:42,462 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 08:07:42,463 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 08:07:42,466 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 08:07:42,466 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 08:07:41" (1/3) ... [2021-10-13 08:07:42,467 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f199b61 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 08:07:42, skipping insertion in model container [2021-10-13 08:07:42,467 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:07:41" (2/3) ... [2021-10-13 08:07:42,468 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f199b61 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 08:07:42, skipping insertion in model container [2021-10-13 08:07:42,468 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 08:07:42" (3/3) ... [2021-10-13 08:07:42,469 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1210.c [2021-10-13 08:07:42,475 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 08:07:42,476 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-13 08:07:42,526 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 08:07:42,533 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-13 08:07:42,533 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-13 08:07:42,548 INFO L276 IsEmpty]: Start isEmpty. Operand has 39 states, 37 states have (on average 1.7297297297297298) internal successors, (64), 38 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:07:42,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-13 08:07:42,554 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:07:42,554 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 08:07:42,555 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 08:07:42,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:07:42,561 INFO L82 PathProgramCache]: Analyzing trace with hash 245322783, now seen corresponding path program 1 times [2021-10-13 08:07:42,570 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 08:07:42,571 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [242251524] [2021-10-13 08:07:42,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:07:42,572 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 08:07:42,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:07:42,719 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:07:42,720 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 08:07:42,720 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [242251524] [2021-10-13 08:07:42,721 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [242251524] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 08:07:42,721 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 08:07:42,722 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-13 08:07:42,723 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807908757] [2021-10-13 08:07:42,728 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-13 08:07:42,729 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 08:07:42,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-13 08:07:42,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-13 08:07:42,744 INFO L87 Difference]: Start difference. First operand has 39 states, 37 states have (on average 1.7297297297297298) internal successors, (64), 38 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:07:42,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:07:42,763 INFO L93 Difference]: Finished difference Result 77 states and 127 transitions. [2021-10-13 08:07:42,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-13 08:07:42,765 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-10-13 08:07:42,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:07:42,775 INFO L225 Difference]: With dead ends: 77 [2021-10-13 08:07:42,775 INFO L226 Difference]: Without dead ends: 37 [2021-10-13 08:07:42,778 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-13 08:07:42,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2021-10-13 08:07:42,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2021-10-13 08:07:42,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 36 states have (on average 1.1388888888888888) internal successors, (41), 36 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:07:42,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 41 transitions. [2021-10-13 08:07:42,820 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 41 transitions. Word has length 10 [2021-10-13 08:07:42,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:07:42,820 INFO L470 AbstractCegarLoop]: Abstraction has 37 states and 41 transitions. [2021-10-13 08:07:42,821 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:07:42,821 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 41 transitions. [2021-10-13 08:07:42,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-13 08:07:42,823 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:07:42,823 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 08:07:42,824 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-13 08:07:42,825 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 08:07:42,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:07:42,828 INFO L82 PathProgramCache]: Analyzing trace with hash -1170461258, now seen corresponding path program 1 times [2021-10-13 08:07:42,828 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 08:07:42,829 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836132492] [2021-10-13 08:07:42,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:07:42,830 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 08:07:42,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 08:07:42,968 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 08:07:43,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 08:07:43,074 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-10-13 08:07:43,074 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-13 08:07:43,075 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 08:07:43,077 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-13 08:07:43,083 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-13 08:07:43,113 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 08:07:43 BoogieIcfgContainer [2021-10-13 08:07:43,113 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-13 08:07:43,113 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-13 08:07:43,113 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-13 08:07:43,114 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-13 08:07:43,114 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 08:07:42" (3/4) ... [2021-10-13 08:07:43,117 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-13 08:07:43,117 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-13 08:07:43,119 INFO L168 Benchmark]: Toolchain (without parser) took 1745.91 ms. Allocated memory was 86.0 MB in the beginning and 134.2 MB in the end (delta: 48.2 MB). Free memory was 53.0 MB in the beginning and 54.6 MB in the end (delta: -1.6 MB). Peak memory consumption was 43.4 MB. Max. memory is 16.1 GB. [2021-10-13 08:07:43,120 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 86.0 MB. Free memory was 57.7 MB in the beginning and 57.6 MB in the end (delta: 31.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 08:07:43,121 INFO L168 Benchmark]: CACSL2BoogieTranslator took 292.13 ms. Allocated memory was 86.0 MB in the beginning and 134.2 MB in the end (delta: 48.2 MB). Free memory was 52.8 MB in the beginning and 108.4 MB in the end (delta: -55.6 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-13 08:07:43,122 INFO L168 Benchmark]: Boogie Procedure Inliner took 63.30 ms. Allocated memory is still 134.2 MB. Free memory was 108.4 MB in the beginning and 106.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 08:07:43,122 INFO L168 Benchmark]: Boogie Preprocessor took 68.41 ms. Allocated memory is still 134.2 MB. Free memory was 106.3 MB in the beginning and 104.9 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 08:07:43,123 INFO L168 Benchmark]: RCFGBuilder took 657.86 ms. Allocated memory is still 134.2 MB. Free memory was 104.9 MB in the beginning and 83.9 MB in the end (delta: 21.0 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. [2021-10-13 08:07:43,123 INFO L168 Benchmark]: TraceAbstraction took 650.42 ms. Allocated memory is still 134.2 MB. Free memory was 83.9 MB in the beginning and 54.6 MB in the end (delta: 29.4 MB). Peak memory consumption was 29.4 MB. Max. memory is 16.1 GB. [2021-10-13 08:07:43,124 INFO L168 Benchmark]: Witness Printer took 4.18 ms. Allocated memory is still 134.2 MB. Free memory is still 54.6 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 08:07:43,127 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 86.0 MB. Free memory was 57.7 MB in the beginning and 57.6 MB in the end (delta: 31.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 292.13 ms. Allocated memory was 86.0 MB in the beginning and 134.2 MB in the end (delta: 48.2 MB). Free memory was 52.8 MB in the beginning and 108.4 MB in the end (delta: -55.6 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 63.30 ms. Allocated memory is still 134.2 MB. Free memory was 108.4 MB in the beginning and 106.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 68.41 ms. Allocated memory is still 134.2 MB. Free memory was 106.3 MB in the beginning and 104.9 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 657.86 ms. Allocated memory is still 134.2 MB. Free memory was 104.9 MB in the beginning and 83.9 MB in the end (delta: 21.0 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. * TraceAbstraction took 650.42 ms. Allocated memory is still 134.2 MB. Free memory was 83.9 MB in the beginning and 54.6 MB in the end (delta: 29.4 MB). Peak memory consumption was 29.4 MB. Max. memory is 16.1 GB. * Witness Printer took 4.18 ms. Allocated memory is still 134.2 MB. Free memory is still 54.6 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 124]: 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 118, overapproximation of bitwiseAnd at line 35. Possible FailurePath: [L19] static const double one_modf = 1.0; [L118] double x = 0.0 / 0.0; [L119] double iptr; [L22] __int32_t i0, i1, j0; [L23] __uint32_t i; VAL [one_modf=1] [L25] ieee_double_shape_type ew_u; [L26] ew_u.value = (x) [L27] EXPR ew_u.parts.msw [L27] (i0) = ew_u.parts.msw [L28] EXPR ew_u.parts.lsw [L28] (i1) = ew_u.parts.lsw [L30] j0 = ((i0 >> 20) & 0x7ff) - 0x3ff VAL [one_modf=1] [L31] COND TRUE j0 < 20 VAL [one_modf=1] [L32] COND TRUE j0 < 0 VAL [one_modf=1] [L34] ieee_double_shape_type iw_u; [L35] iw_u.parts.msw = (i0 & 0x80000000) [L36] iw_u.parts.lsw = (0) [L37] EXPR iw_u.value [L37] (*iptr) = iw_u.value [L39] return x; VAL [one_modf=1] [L120] double res = modf_double(x, &iptr); [L123] EXPR \read(iptr) [L17] return x != x; [L123] isnan_double(iptr) && !isnan_double(res) [L17] return x != x; [L123] isnan_double(iptr) && !isnan_double(res) VAL [one_modf=1] [L123] COND TRUE isnan_double(iptr) && !isnan_double(res) [L124] reach_error() VAL [one_modf=1] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 39 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 557.6ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 11.6ms, AutomataDifference: 48.5ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 10.9ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 43 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=39occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 26.1ms AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 16.1ms SsaConstructionTime, 147.3ms SatisfiabilityAnalysisTime, 48.0ms InterpolantComputationTime, 22 NumberOfCodeBlocks, 22 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 9 ConstructedInterpolants, 0 QuantifiedInterpolants, 9 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-10-13 08:07:43,202 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5805093-8c75-40f3-a345-2731a8f19ad6/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-dev-4e77c04 [2021-10-13 08:07:45,679 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 08:07:45,681 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 08:07:45,718 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 08:07:45,718 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 08:07:45,724 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 08:07:45,727 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 08:07:45,731 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 08:07:45,735 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 08:07:45,742 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 08:07:45,743 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 08:07:45,745 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 08:07:45,746 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 08:07:45,749 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 08:07:45,752 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 08:07:45,754 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 08:07:45,756 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 08:07:45,757 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 08:07:45,762 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 08:07:45,772 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 08:07:45,774 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 08:07:45,777 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 08:07:45,779 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 08:07:45,780 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 08:07:45,783 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 08:07:45,783 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 08:07:45,784 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 08:07:45,785 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 08:07:45,785 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 08:07:45,786 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 08:07:45,786 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 08:07:45,787 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 08:07:45,788 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 08:07:45,789 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 08:07:45,790 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 08:07:45,791 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 08:07:45,798 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 08:07:45,798 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 08:07:45,798 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 08:07:45,800 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 08:07:45,801 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 08:07:45,802 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5805093-8c75-40f3-a345-2731a8f19ad6/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-10-13 08:07:45,855 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 08:07:45,855 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 08:07:45,857 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-13 08:07:45,857 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-13 08:07:45,857 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-13 08:07:45,857 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-13 08:07:45,858 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-13 08:07:45,858 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-13 08:07:45,858 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-13 08:07:45,860 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 08:07:45,861 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 08:07:45,861 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 08:07:45,861 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 08:07:45,861 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 08:07:45,861 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 08:07:45,862 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 08:07:45,862 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-13 08:07:45,862 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-13 08:07:45,862 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-13 08:07:45,862 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 08:07:45,863 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 08:07:45,863 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 08:07:45,863 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 08:07:45,863 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 08:07:45,864 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-13 08:07:45,864 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 08:07:45,864 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 08:07:45,864 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 08:07:45,864 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 08:07:45,865 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 08:07:45,865 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-13 08:07:45,865 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-13 08:07:45,865 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 08:07:45,865 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 08:07:45,866 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-13 08:07:45,866 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_b5805093-8c75-40f3-a345-2731a8f19ad6/bin/utaipan-q2qaUkNPG8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5805093-8c75-40f3-a345-2731a8f19ad6/bin/utaipan-q2qaUkNPG8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 85e5b86abce931d95696fba33e25199d528f9f0e [2021-10-13 08:07:46,238 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 08:07:46,264 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 08:07:46,267 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 08:07:46,268 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 08:07:46,269 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 08:07:46,271 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5805093-8c75-40f3-a345-2731a8f19ad6/bin/utaipan-q2qaUkNPG8/../../sv-benchmarks/c/float-newlib/double_req_bl_1210.c [2021-10-13 08:07:46,355 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5805093-8c75-40f3-a345-2731a8f19ad6/bin/utaipan-q2qaUkNPG8/data/4494d8273/65396ad5d42248e988d6fa2bf5cbd17c/FLAGa79427099 [2021-10-13 08:07:46,912 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 08:07:46,912 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5805093-8c75-40f3-a345-2731a8f19ad6/sv-benchmarks/c/float-newlib/double_req_bl_1210.c [2021-10-13 08:07:46,922 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5805093-8c75-40f3-a345-2731a8f19ad6/bin/utaipan-q2qaUkNPG8/data/4494d8273/65396ad5d42248e988d6fa2bf5cbd17c/FLAGa79427099 [2021-10-13 08:07:47,255 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5805093-8c75-40f3-a345-2731a8f19ad6/bin/utaipan-q2qaUkNPG8/data/4494d8273/65396ad5d42248e988d6fa2bf5cbd17c [2021-10-13 08:07:47,258 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 08:07:47,261 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 08:07:47,266 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 08:07:47,267 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 08:07:47,270 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 08:07:47,271 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 08:07:47" (1/1) ... [2021-10-13 08:07:47,273 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f6abe69 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:07:47, skipping insertion in model container [2021-10-13 08:07:47,274 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 08:07:47" (1/1) ... [2021-10-13 08:07:47,281 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 08:07:47,317 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 08:07:47,468 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_b5805093-8c75-40f3-a345-2731a8f19ad6/sv-benchmarks/c/float-newlib/double_req_bl_1210.c[3091,3104] [2021-10-13 08:07:47,471 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 08:07:47,508 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 08:07:47,600 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_b5805093-8c75-40f3-a345-2731a8f19ad6/sv-benchmarks/c/float-newlib/double_req_bl_1210.c[3091,3104] [2021-10-13 08:07:47,602 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 08:07:47,618 INFO L208 MainTranslator]: Completed translation [2021-10-13 08:07:47,618 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:07:47 WrapperNode [2021-10-13 08:07:47,619 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 08:07:47,620 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 08:07:47,620 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 08:07:47,620 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 08:07:47,628 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:07:47" (1/1) ... [2021-10-13 08:07:47,641 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:07:47" (1/1) ... [2021-10-13 08:07:47,670 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 08:07:47,671 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 08:07:47,671 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 08:07:47,671 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 08:07:47,680 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:07:47" (1/1) ... [2021-10-13 08:07:47,680 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:07:47" (1/1) ... [2021-10-13 08:07:47,686 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:07:47" (1/1) ... [2021-10-13 08:07:47,687 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:07:47" (1/1) ... [2021-10-13 08:07:47,700 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:07:47" (1/1) ... [2021-10-13 08:07:47,706 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:07:47" (1/1) ... [2021-10-13 08:07:47,709 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:07:47" (1/1) ... [2021-10-13 08:07:47,714 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 08:07:47,715 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 08:07:47,715 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 08:07:47,715 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 08:07:47,716 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:07:47" (1/1) ... [2021-10-13 08:07:47,723 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 08:07:47,738 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5805093-8c75-40f3-a345-2731a8f19ad6/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 08:07:47,754 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5805093-8c75-40f3-a345-2731a8f19ad6/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 08:07:47,758 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5805093-8c75-40f3-a345-2731a8f19ad6/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 08:07:47,797 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2021-10-13 08:07:47,797 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2021-10-13 08:07:47,797 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-13 08:07:47,797 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 08:07:47,798 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-13 08:07:47,798 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 08:07:47,798 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 08:07:47,798 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-13 08:07:47,799 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-13 08:07:48,761 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 08:07:48,761 INFO L299 CfgBuilder]: Removed 30 assume(true) statements. [2021-10-13 08:07:48,763 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 08:07:48 BoogieIcfgContainer [2021-10-13 08:07:48,764 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 08:07:48,766 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 08:07:48,766 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 08:07:48,769 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 08:07:48,769 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 08:07:47" (1/3) ... [2021-10-13 08:07:48,770 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b9d37a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 08:07:48, skipping insertion in model container [2021-10-13 08:07:48,770 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:07:47" (2/3) ... [2021-10-13 08:07:48,771 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b9d37a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 08:07:48, skipping insertion in model container [2021-10-13 08:07:48,771 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 08:07:48" (3/3) ... [2021-10-13 08:07:48,772 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1210.c [2021-10-13 08:07:48,778 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 08:07:48,778 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-13 08:07:48,827 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 08:07:48,834 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-13 08:07:48,834 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-13 08:07:48,850 INFO L276 IsEmpty]: Start isEmpty. Operand has 44 states, 42 states have (on average 1.6666666666666667) internal successors, (70), 43 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:07:48,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-13 08:07:48,856 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:07:48,857 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 08:07:48,857 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 08:07:48,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:07:48,863 INFO L82 PathProgramCache]: Analyzing trace with hash -1560975081, now seen corresponding path program 1 times [2021-10-13 08:07:48,875 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 08:07:48,876 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1069442477] [2021-10-13 08:07:48,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:07:48,877 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 08:07:48,877 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5805093-8c75-40f3-a345-2731a8f19ad6/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 08:07:48,881 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5805093-8c75-40f3-a345-2731a8f19ad6/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 08:07:48,916 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5805093-8c75-40f3-a345-2731a8f19ad6/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-13 08:07:49,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:07:49,034 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-13 08:07:49,038 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:07:49,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:07:49,132 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:07:49,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:07:49,202 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 08:07:49,202 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1069442477] [2021-10-13 08:07:49,202 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1069442477] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 08:07:49,203 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 08:07:49,203 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-13 08:07:49,204 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558225272] [2021-10-13 08:07:49,209 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-13 08:07:49,209 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 08:07:49,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-13 08:07:49,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-13 08:07:49,224 INFO L87 Difference]: Start difference. First operand has 44 states, 42 states have (on average 1.6666666666666667) internal successors, (70), 43 states have internal predecessors, (70), 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 6.5) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:07:49,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:07:49,243 INFO L93 Difference]: Finished difference Result 86 states and 138 transitions. [2021-10-13 08:07:49,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-13 08:07:49,244 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-10-13 08:07:49,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:07:49,253 INFO L225 Difference]: With dead ends: 86 [2021-10-13 08:07:49,253 INFO L226 Difference]: Without dead ends: 41 [2021-10-13 08:07:49,256 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-13 08:07:49,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2021-10-13 08:07:49,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2021-10-13 08:07:49,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 40 states have (on average 1.15) internal successors, (46), 40 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:07:49,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 46 transitions. [2021-10-13 08:07:49,288 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 46 transitions. Word has length 13 [2021-10-13 08:07:49,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:07:49,289 INFO L470 AbstractCegarLoop]: Abstraction has 41 states and 46 transitions. [2021-10-13 08:07:49,289 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:07:49,289 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 46 transitions. [2021-10-13 08:07:49,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-13 08:07:49,290 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:07:49,291 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 08:07:49,310 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5805093-8c75-40f3-a345-2731a8f19ad6/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-13 08:07:49,507 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5805093-8c75-40f3-a345-2731a8f19ad6/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 08:07:49,507 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 08:07:49,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:07:49,508 INFO L82 PathProgramCache]: Analyzing trace with hash -11965906, now seen corresponding path program 1 times [2021-10-13 08:07:49,509 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 08:07:49,510 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1397508426] [2021-10-13 08:07:49,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:07:49,510 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 08:07:49,510 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5805093-8c75-40f3-a345-2731a8f19ad6/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 08:07:49,513 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5805093-8c75-40f3-a345-2731a8f19ad6/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 08:07:49,516 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5805093-8c75-40f3-a345-2731a8f19ad6/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-13 08:07:49,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:07:49,643 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-13 08:07:49,645 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:07:50,063 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:07:50,063 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:07:50,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:07:50,361 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 08:07:50,362 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1397508426] [2021-10-13 08:07:50,362 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1397508426] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 08:07:50,362 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 08:07:50,363 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-10-13 08:07:50,363 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946755644] [2021-10-13 08:07:50,364 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-13 08:07:50,365 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 08:07:50,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-13 08:07:50,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-10-13 08:07:50,367 INFO L87 Difference]: Start difference. First operand 41 states and 46 transitions. Second operand has 8 states, 8 states have (on average 2.5) internal successors, (20), 8 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:07:52,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:07:52,739 INFO L93 Difference]: Finished difference Result 48 states and 53 transitions. [2021-10-13 08:07:52,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 08:07:52,741 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.5) internal successors, (20), 8 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-10-13 08:07:52,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:07:52,742 INFO L225 Difference]: With dead ends: 48 [2021-10-13 08:07:52,742 INFO L226 Difference]: Without dead ends: 19 [2021-10-13 08:07:52,743 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 462.5ms TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2021-10-13 08:07:52,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2021-10-13 08:07:52,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2021-10-13 08:07:52,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 18 states have (on average 1.0555555555555556) internal successors, (19), 18 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:07:52,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2021-10-13 08:07:52,747 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 15 [2021-10-13 08:07:52,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:07:52,747 INFO L470 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2021-10-13 08:07:52,748 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.5) internal successors, (20), 8 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:07:52,748 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2021-10-13 08:07:52,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-13 08:07:52,760 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:07:52,760 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 08:07:52,780 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5805093-8c75-40f3-a345-2731a8f19ad6/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-13 08:07:52,961 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5805093-8c75-40f3-a345-2731a8f19ad6/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 08:07:52,961 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 08:07:52,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:07:52,962 INFO L82 PathProgramCache]: Analyzing trace with hash 1834889353, now seen corresponding path program 1 times [2021-10-13 08:07:52,963 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 08:07:52,963 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1285592497] [2021-10-13 08:07:52,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:07:52,963 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 08:07:52,963 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5805093-8c75-40f3-a345-2731a8f19ad6/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 08:07:52,965 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5805093-8c75-40f3-a345-2731a8f19ad6/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 08:07:52,973 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5805093-8c75-40f3-a345-2731a8f19ad6/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-13 08:07:53,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:07:53,342 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 08:07:53,343 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:07:53,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:07:53,402 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:07:53,444 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:07:53,444 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 08:07:53,444 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1285592497] [2021-10-13 08:07:53,445 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1285592497] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 08:07:53,445 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 08:07:53,445 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-13 08:07:53,445 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729875522] [2021-10-13 08:07:53,446 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 08:07:53,446 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 08:07:53,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 08:07:53,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 08:07:53,447 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:07:53,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:07:53,515 INFO L93 Difference]: Finished difference Result 22 states and 21 transitions. [2021-10-13 08:07:53,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 08:07:53,517 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 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 17 [2021-10-13 08:07:53,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:07:53,518 INFO L225 Difference]: With dead ends: 22 [2021-10-13 08:07:53,518 INFO L226 Difference]: Without dead ends: 19 [2021-10-13 08:07:53,518 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.1ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 08:07:53,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2021-10-13 08:07:53,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2021-10-13 08:07:53,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 18 states have (on average 1.0) internal successors, (18), 18 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:07:53,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 18 transitions. [2021-10-13 08:07:53,521 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 18 transitions. Word has length 17 [2021-10-13 08:07:53,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:07:53,522 INFO L470 AbstractCegarLoop]: Abstraction has 19 states and 18 transitions. [2021-10-13 08:07:53,529 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:07:53,529 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 18 transitions. [2021-10-13 08:07:53,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-13 08:07:53,532 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:07:53,532 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 08:07:53,556 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5805093-8c75-40f3-a345-2731a8f19ad6/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-13 08:07:53,749 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5805093-8c75-40f3-a345-2731a8f19ad6/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 08:07:53,750 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 08:07:53,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:07:53,751 INFO L82 PathProgramCache]: Analyzing trace with hash 1046870301, now seen corresponding path program 1 times [2021-10-13 08:07:53,751 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 08:07:53,751 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1030485723] [2021-10-13 08:07:53,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:07:53,752 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 08:07:53,752 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5805093-8c75-40f3-a345-2731a8f19ad6/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 08:07:53,753 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5805093-8c75-40f3-a345-2731a8f19ad6/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 08:07:53,757 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5805093-8c75-40f3-a345-2731a8f19ad6/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-13 08:07:54,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 08:07:54,206 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 08:07:54,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 08:07:54,687 INFO L133 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2021-10-13 08:07:54,687 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-13 08:07:54,689 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 08:07:54,716 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5805093-8c75-40f3-a345-2731a8f19ad6/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-13 08:07:54,891 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5805093-8c75-40f3-a345-2731a8f19ad6/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 08:07:54,896 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-13 08:07:54,931 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 08:07:54 BoogieIcfgContainer [2021-10-13 08:07:54,931 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-13 08:07:54,932 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-13 08:07:54,932 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-13 08:07:54,932 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-13 08:07:54,933 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 08:07:48" (3/4) ... [2021-10-13 08:07:54,935 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-13 08:07:54,992 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5805093-8c75-40f3-a345-2731a8f19ad6/bin/utaipan-q2qaUkNPG8/witness.graphml [2021-10-13 08:07:54,993 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-13 08:07:54,995 INFO L168 Benchmark]: Toolchain (without parser) took 7732.45 ms. Allocated memory was 58.7 MB in the beginning and 90.2 MB in the end (delta: 31.5 MB). Free memory was 36.9 MB in the beginning and 57.9 MB in the end (delta: -21.0 MB). Peak memory consumption was 12.3 MB. Max. memory is 16.1 GB. [2021-10-13 08:07:54,995 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 58.7 MB. Free memory is still 39.6 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 08:07:54,996 INFO L168 Benchmark]: CACSL2BoogieTranslator took 352.88 ms. Allocated memory was 58.7 MB in the beginning and 73.4 MB in the end (delta: 14.7 MB). Free memory was 36.7 MB in the beginning and 55.4 MB in the end (delta: -18.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-10-13 08:07:54,997 INFO L168 Benchmark]: Boogie Procedure Inliner took 50.38 ms. Allocated memory is still 73.4 MB. Free memory was 55.2 MB in the beginning and 53.3 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 08:07:54,997 INFO L168 Benchmark]: Boogie Preprocessor took 43.07 ms. Allocated memory is still 73.4 MB. Free memory was 53.3 MB in the beginning and 51.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 08:07:54,998 INFO L168 Benchmark]: RCFGBuilder took 1049.06 ms. Allocated memory is still 73.4 MB. Free memory was 51.2 MB in the beginning and 49.9 MB in the end (delta: 1.2 MB). Peak memory consumption was 16.7 MB. Max. memory is 16.1 GB. [2021-10-13 08:07:54,999 INFO L168 Benchmark]: TraceAbstraction took 6165.98 ms. Allocated memory was 73.4 MB in the beginning and 90.2 MB in the end (delta: 16.8 MB). Free memory was 49.5 MB in the beginning and 60.5 MB in the end (delta: -11.0 MB). Peak memory consumption was 5.0 MB. Max. memory is 16.1 GB. [2021-10-13 08:07:55,000 INFO L168 Benchmark]: Witness Printer took 60.96 ms. Allocated memory is still 90.2 MB. Free memory was 60.5 MB in the beginning and 57.9 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 08:07:55,003 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 58.7 MB. Free memory is still 39.6 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 352.88 ms. Allocated memory was 58.7 MB in the beginning and 73.4 MB in the end (delta: 14.7 MB). Free memory was 36.7 MB in the beginning and 55.4 MB in the end (delta: -18.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 50.38 ms. Allocated memory is still 73.4 MB. Free memory was 55.2 MB in the beginning and 53.3 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 43.07 ms. Allocated memory is still 73.4 MB. Free memory was 53.3 MB in the beginning and 51.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1049.06 ms. Allocated memory is still 73.4 MB. Free memory was 51.2 MB in the beginning and 49.9 MB in the end (delta: 1.2 MB). Peak memory consumption was 16.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 6165.98 ms. Allocated memory was 73.4 MB in the beginning and 90.2 MB in the end (delta: 16.8 MB). Free memory was 49.5 MB in the beginning and 60.5 MB in the end (delta: -11.0 MB). Peak memory consumption was 5.0 MB. Max. memory is 16.1 GB. * Witness Printer took 60.96 ms. Allocated memory is still 90.2 MB. Free memory was 60.5 MB in the beginning and 57.9 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 124]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L19] static const double one_modf = 1.0; VAL [one_modf=1.0] [L118] double x = 0.0 / 0.0; [L119] double iptr; [L22] __int32_t i0, i1, j0; [L23] __uint32_t i; VAL [one_modf=1.0] [L25] ieee_double_shape_type ew_u; [L26] ew_u.value = (x) [L27] EXPR ew_u.parts.msw [L27] (i0) = ew_u.parts.msw [L28] EXPR ew_u.parts.lsw [L28] (i1) = ew_u.parts.lsw [L30] j0 = ((i0 >> 20) & 0x7ff) - 0x3ff VAL [one_modf=1.0] [L31] COND FALSE !(j0 < 20) VAL [one_modf=1.0] [L67] COND TRUE j0 > 51 [L68] __uint32_t high; [L69] *iptr = x * one_modf VAL [one_modf=1.0] [L71] ieee_double_shape_type gh_u; [L72] gh_u.value = (x) [L73] EXPR gh_u.parts.msw [L73] (high) = gh_u.parts.msw [L76] ieee_double_shape_type iw_u; [L77] iw_u.parts.msw = (high & 0x80000000) [L78] iw_u.parts.lsw = (0) [L79] EXPR iw_u.value [L79] (x) = iw_u.value [L81] return x; VAL [one_modf=1.0] [L120] double res = modf_double(x, &iptr); [L123] EXPR \read(iptr) [L17] return x != x; VAL [one_modf=1.0] [L123] isnan_double(iptr) && !isnan_double(res) [L17] return x != x; VAL [one_modf=1.0] [L123] isnan_double(iptr) && !isnan_double(res) VAL [one_modf=1.0] [L123] COND TRUE isnan_double(iptr) && !isnan_double(res) [L124] reach_error() VAL [one_modf=1.0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 44 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 6070.4ms, OverallIterations: 4, TraceHistogramMax: 1, EmptinessCheckTime: 25.8ms, AutomataDifference: 2496.4ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 11.3ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 83 SDtfs, 13 SDslu, 64 SDs, 0 SdLazy, 16 SolverSat, 1 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 2209.1ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 86 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 468.8ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=44occurred in iteration=0, InterpolantAutomatonStates: 10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 25.5ms AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 62.2ms SsaConstructionTime, 820.8ms SatisfiabilityAnalysisTime, 1019.6ms InterpolantComputationTime, 63 NumberOfCodeBlocks, 63 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 84 ConstructedInterpolants, 5 QuantifiedInterpolants, 192 SizeOfPredicates, 8 NumberOfNonLiveVariables, 199 ConjunctsInSsa, 11 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 RESULT: Ultimate proved your program to be incorrect! [2021-10-13 08:07:55,072 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5805093-8c75-40f3-a345-2731a8f19ad6/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...