./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/double_req_bl_1211b.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e7fbc69 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57232db7-be4d-44b4-864b-f119beeaff74/bin/utaipan-Q6hlc19bkW/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57232db7-be4d-44b4-864b-f119beeaff74/bin/utaipan-Q6hlc19bkW/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57232db7-be4d-44b4-864b-f119beeaff74/bin/utaipan-Q6hlc19bkW/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57232db7-be4d-44b4-864b-f119beeaff74/bin/utaipan-Q6hlc19bkW/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1211b.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57232db7-be4d-44b4-864b-f119beeaff74/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57232db7-be4d-44b4-864b-f119beeaff74/bin/utaipan-Q6hlc19bkW --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 357cd7c68915d75ef7cc5bde5b81cbcf327e780f04b059068444ae319e85eb5a --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-4e7fbc6 [2022-11-23 15:29:52,902 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 15:29:52,905 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 15:29:52,945 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 15:29:52,946 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 15:29:52,949 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 15:29:52,952 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 15:29:52,955 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 15:29:52,958 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 15:29:52,964 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 15:29:52,965 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 15:29:52,967 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 15:29:52,968 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 15:29:52,971 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 15:29:52,973 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 15:29:52,979 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 15:29:52,981 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 15:29:52,982 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 15:29:52,983 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 15:29:52,989 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 15:29:52,991 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 15:29:52,993 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 15:29:52,994 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 15:29:52,995 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 15:29:52,999 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 15:29:52,999 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 15:29:53,000 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 15:29:53,001 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 15:29:53,001 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 15:29:53,004 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 15:29:53,005 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 15:29:53,006 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 15:29:53,008 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 15:29:53,009 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 15:29:53,011 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 15:29:53,011 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 15:29:53,012 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 15:29:53,013 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 15:29:53,013 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 15:29:53,014 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 15:29:53,015 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 15:29:53,016 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57232db7-be4d-44b4-864b-f119beeaff74/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-23 15:29:53,058 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 15:29:53,058 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 15:29:53,059 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 15:29:53,059 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 15:29:53,060 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 15:29:53,060 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 15:29:53,061 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-23 15:29:53,061 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-23 15:29:53,061 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-23 15:29:53,061 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-23 15:29:53,062 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-23 15:29:53,063 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-23 15:29:53,063 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-23 15:29:53,063 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-23 15:29:53,063 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-23 15:29:53,064 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-23 15:29:53,064 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-23 15:29:53,064 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-23 15:29:53,065 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 15:29:53,065 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-23 15:29:53,065 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 15:29:53,066 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-23 15:29:53,066 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 15:29:53,066 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 15:29:53,066 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 15:29:53,067 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 15:29:53,067 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-23 15:29:53,067 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 15:29:53,067 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 15:29:53,067 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 15:29:53,068 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 15:29:53,068 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 15:29:53,068 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 15:29:53,069 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 15:29:53,069 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-23 15:29:53,069 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 15:29:53,069 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 15:29:53,070 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-23 15:29:53,070 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 15:29:53,070 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 15:29:53,070 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-23 15:29:53,070 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57232db7-be4d-44b4-864b-f119beeaff74/bin/utaipan-Q6hlc19bkW/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57232db7-be4d-44b4-864b-f119beeaff74/bin/utaipan-Q6hlc19bkW Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 357cd7c68915d75ef7cc5bde5b81cbcf327e780f04b059068444ae319e85eb5a [2022-11-23 15:29:53,346 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 15:29:53,384 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 15:29:53,388 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 15:29:53,390 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 15:29:53,390 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 15:29:53,392 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57232db7-be4d-44b4-864b-f119beeaff74/bin/utaipan-Q6hlc19bkW/../../sv-benchmarks/c/float-newlib/double_req_bl_1211b.c [2022-11-23 15:29:56,418 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 15:29:56,653 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 15:29:56,654 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57232db7-be4d-44b4-864b-f119beeaff74/sv-benchmarks/c/float-newlib/double_req_bl_1211b.c [2022-11-23 15:29:56,661 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57232db7-be4d-44b4-864b-f119beeaff74/bin/utaipan-Q6hlc19bkW/data/7bdc8bf62/f3fd8db0b2984d3987d6671ce0227901/FLAG41b7c245e [2022-11-23 15:29:56,677 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57232db7-be4d-44b4-864b-f119beeaff74/bin/utaipan-Q6hlc19bkW/data/7bdc8bf62/f3fd8db0b2984d3987d6671ce0227901 [2022-11-23 15:29:56,679 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 15:29:56,681 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 15:29:56,689 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 15:29:56,690 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 15:29:56,694 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 15:29:56,695 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:29:56" (1/1) ... [2022-11-23 15:29:56,696 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1be13ff6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:29:56, skipping insertion in model container [2022-11-23 15:29:56,697 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:29:56" (1/1) ... [2022-11-23 15:29:56,705 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 15:29:56,730 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 15:29:56,908 WARN L237 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_57232db7-be4d-44b4-864b-f119beeaff74/sv-benchmarks/c/float-newlib/double_req_bl_1211b.c[3718,3731] [2022-11-23 15:29:56,912 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 15:29:56,926 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 15:29:56,970 WARN L237 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_57232db7-be4d-44b4-864b-f119beeaff74/sv-benchmarks/c/float-newlib/double_req_bl_1211b.c[3718,3731] [2022-11-23 15:29:56,971 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 15:29:56,985 INFO L208 MainTranslator]: Completed translation [2022-11-23 15:29:56,986 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:29:56 WrapperNode [2022-11-23 15:29:56,986 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 15:29:56,987 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 15:29:56,988 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 15:29:56,988 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 15:29:56,995 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:29:56" (1/1) ... [2022-11-23 15:29:57,006 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:29:56" (1/1) ... [2022-11-23 15:29:57,036 INFO L138 Inliner]: procedures = 20, calls = 80, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 243 [2022-11-23 15:29:57,037 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 15:29:57,037 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 15:29:57,038 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 15:29:57,038 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 15:29:57,048 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:29:56" (1/1) ... [2022-11-23 15:29:57,048 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:29:56" (1/1) ... [2022-11-23 15:29:57,052 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:29:56" (1/1) ... [2022-11-23 15:29:57,053 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:29:56" (1/1) ... [2022-11-23 15:29:57,081 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:29:56" (1/1) ... [2022-11-23 15:29:57,096 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:29:56" (1/1) ... [2022-11-23 15:29:57,099 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:29:56" (1/1) ... [2022-11-23 15:29:57,100 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:29:56" (1/1) ... [2022-11-23 15:29:57,118 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 15:29:57,119 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 15:29:57,119 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 15:29:57,119 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 15:29:57,120 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:29:56" (1/1) ... [2022-11-23 15:29:57,130 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 15:29:57,141 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57232db7-be4d-44b4-864b-f119beeaff74/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:29:57,162 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57232db7-be4d-44b4-864b-f119beeaff74/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 15:29:57,187 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57232db7-be4d-44b4-864b-f119beeaff74/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 15:29:57,217 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 15:29:57,218 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-23 15:29:57,218 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-23 15:29:57,218 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2022-11-23 15:29:57,218 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-23 15:29:57,218 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2022-11-23 15:29:57,219 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 15:29:57,219 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 15:29:57,219 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2022-11-23 15:29:57,219 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-23 15:29:57,219 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-23 15:29:57,368 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 15:29:57,384 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 15:29:57,880 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 15:29:57,923 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 15:29:57,924 INFO L300 CfgBuilder]: Removed 24 assume(true) statements. [2022-11-23 15:29:57,926 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:29:57 BoogieIcfgContainer [2022-11-23 15:29:57,926 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 15:29:57,929 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 15:29:57,929 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 15:29:57,932 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 15:29:57,932 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 03:29:56" (1/3) ... [2022-11-23 15:29:57,933 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50b1077f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:29:57, skipping insertion in model container [2022-11-23 15:29:57,933 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:29:56" (2/3) ... [2022-11-23 15:29:57,934 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50b1077f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:29:57, skipping insertion in model container [2022-11-23 15:29:57,934 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:29:57" (3/3) ... [2022-11-23 15:29:57,935 INFO L112 eAbstractionObserver]: Analyzing ICFG double_req_bl_1211b.c [2022-11-23 15:29:57,955 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 15:29:57,955 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-23 15:29:58,011 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 15:29:58,017 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@6bc55b73, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 15:29:58,017 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-23 15:29:58,022 INFO L276 IsEmpty]: Start isEmpty. Operand has 48 states, 46 states have (on average 1.7173913043478262) internal successors, (79), 47 states have internal predecessors, (79), 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) [2022-11-23 15:29:58,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-23 15:29:58,030 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:29:58,030 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:29:58,031 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:29:58,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:29:58,036 INFO L85 PathProgramCache]: Analyzing trace with hash 834473654, now seen corresponding path program 1 times [2022-11-23 15:29:58,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:29:58,047 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785339172] [2022-11-23 15:29:58,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:29:58,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:29:58,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:29:58,306 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:29:58,307 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:29:58,307 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785339172] [2022-11-23 15:29:58,307 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1785339172] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:29:58,308 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:29:58,308 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 15:29:58,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273717337] [2022-11-23 15:29:58,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:29:58,315 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-23 15:29:58,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:29:58,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-23 15:29:58,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-23 15:29:58,345 INFO L87 Difference]: Start difference. First operand has 48 states, 46 states have (on average 1.7173913043478262) internal successors, (79), 47 states have internal predecessors, (79), 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) [2022-11-23 15:29:58,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:29:58,399 INFO L93 Difference]: Finished difference Result 95 states and 157 transitions. [2022-11-23 15:29:58,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-23 15:29:58,401 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 [2022-11-23 15:29:58,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:29:58,411 INFO L225 Difference]: With dead ends: 95 [2022-11-23 15:29:58,411 INFO L226 Difference]: Without dead ends: 46 [2022-11-23 15:29:58,415 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-23 15:29:58,422 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 15:29:58,424 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 50 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 15:29:58,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2022-11-23 15:29:58,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2022-11-23 15:29:58,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 45 states have (on average 1.1555555555555554) internal successors, (52), 45 states have internal predecessors, (52), 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) [2022-11-23 15:29:58,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 52 transitions. [2022-11-23 15:29:58,472 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 52 transitions. Word has length 13 [2022-11-23 15:29:58,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:29:58,474 INFO L495 AbstractCegarLoop]: Abstraction has 46 states and 52 transitions. [2022-11-23 15:29:58,475 INFO L496 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) [2022-11-23 15:29:58,475 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 52 transitions. [2022-11-23 15:29:58,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-23 15:29:58,478 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:29:58,478 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:29:58,479 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-23 15:29:58,479 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:29:58,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:29:58,481 INFO L85 PathProgramCache]: Analyzing trace with hash 1702812403, now seen corresponding path program 1 times [2022-11-23 15:29:58,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:29:58,482 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1113950534] [2022-11-23 15:29:58,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:29:58,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:29:58,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:29:58,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:29:58,668 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:29:58,669 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1113950534] [2022-11-23 15:29:58,669 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1113950534] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:29:58,670 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:29:58,670 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 15:29:58,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585308302] [2022-11-23 15:29:58,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:29:58,672 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:29:58,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:29:58,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:29:58,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:29:58,675 INFO L87 Difference]: Start difference. First operand 46 states and 52 transitions. Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 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) [2022-11-23 15:29:58,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:29:58,716 INFO L93 Difference]: Finished difference Result 49 states and 54 transitions. [2022-11-23 15:29:58,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:29:58,718 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 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 16 [2022-11-23 15:29:58,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:29:58,719 INFO L225 Difference]: With dead ends: 49 [2022-11-23 15:29:58,719 INFO L226 Difference]: Without dead ends: 46 [2022-11-23 15:29:58,719 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:29:58,721 INFO L413 NwaCegarLoop]: 49 mSDtfsCounter, 0 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 15:29:58,722 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 94 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 15:29:58,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2022-11-23 15:29:58,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2022-11-23 15:29:58,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 45 states have (on average 1.1333333333333333) internal successors, (51), 45 states have internal predecessors, (51), 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) [2022-11-23 15:29:58,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 51 transitions. [2022-11-23 15:29:58,728 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 51 transitions. Word has length 16 [2022-11-23 15:29:58,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:29:58,729 INFO L495 AbstractCegarLoop]: Abstraction has 46 states and 51 transitions. [2022-11-23 15:29:58,729 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 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) [2022-11-23 15:29:58,729 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 51 transitions. [2022-11-23 15:29:58,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-23 15:29:58,730 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:29:58,730 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:29:58,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-23 15:29:58,731 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:29:58,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:29:58,732 INFO L85 PathProgramCache]: Analyzing trace with hash -2223683, now seen corresponding path program 1 times [2022-11-23 15:29:58,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:29:58,732 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [90915210] [2022-11-23 15:29:58,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:29:58,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:29:59,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-23 15:29:59,002 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-23 15:29:59,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-23 15:29:59,265 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-23 15:29:59,265 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-23 15:29:59,266 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-23 15:29:59,268 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-23 15:29:59,273 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-11-23 15:29:59,277 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-23 15:29:59,332 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 03:29:59 BoogieIcfgContainer [2022-11-23 15:29:59,332 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-23 15:29:59,334 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-23 15:29:59,334 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-23 15:29:59,334 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-23 15:29:59,335 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:29:57" (3/4) ... [2022-11-23 15:29:59,339 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-23 15:29:59,339 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-23 15:29:59,340 INFO L158 Benchmark]: Toolchain (without parser) took 2659.16ms. Allocated memory is still 169.9MB. Free memory was 137.9MB in the beginning and 133.3MB in the end (delta: 4.6MB). Peak memory consumption was 6.4MB. Max. memory is 16.1GB. [2022-11-23 15:29:59,340 INFO L158 Benchmark]: CDTParser took 0.28ms. Allocated memory is still 136.3MB. Free memory is still 77.3MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 15:29:59,341 INFO L158 Benchmark]: CACSL2BoogieTranslator took 297.20ms. Allocated memory is still 169.9MB. Free memory was 137.9MB in the beginning and 125.4MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-23 15:29:59,344 INFO L158 Benchmark]: Boogie Procedure Inliner took 49.52ms. Allocated memory is still 169.9MB. Free memory was 125.4MB in the beginning and 122.9MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-23 15:29:59,347 INFO L158 Benchmark]: Boogie Preprocessor took 80.56ms. Allocated memory is still 169.9MB. Free memory was 122.9MB in the beginning and 120.3MB in the end (delta: 2.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-23 15:29:59,348 INFO L158 Benchmark]: RCFGBuilder took 807.82ms. Allocated memory is still 169.9MB. Free memory was 120.3MB in the beginning and 93.0MB in the end (delta: 27.3MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. [2022-11-23 15:29:59,348 INFO L158 Benchmark]: TraceAbstraction took 1403.85ms. Allocated memory is still 169.9MB. Free memory was 92.5MB in the beginning and 133.3MB in the end (delta: -40.8MB). Peak memory consumption was 31.6MB. Max. memory is 16.1GB. [2022-11-23 15:29:59,349 INFO L158 Benchmark]: Witness Printer took 5.40ms. Allocated memory is still 169.9MB. Free memory is still 133.3MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 15:29:59,350 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28ms. Allocated memory is still 136.3MB. Free memory is still 77.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 297.20ms. Allocated memory is still 169.9MB. Free memory was 137.9MB in the beginning and 125.4MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 49.52ms. Allocated memory is still 169.9MB. Free memory was 125.4MB in the beginning and 122.9MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 80.56ms. Allocated memory is still 169.9MB. Free memory was 122.9MB in the beginning and 120.3MB in the end (delta: 2.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 807.82ms. Allocated memory is still 169.9MB. Free memory was 120.3MB in the beginning and 93.0MB in the end (delta: 27.3MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. * TraceAbstraction took 1403.85ms. Allocated memory is still 169.9MB. Free memory was 92.5MB in the beginning and 133.3MB in the end (delta: -40.8MB). Peak memory consumption was 31.6MB. Max. memory is 16.1GB. * Witness Printer took 5.40ms. Allocated memory is still 169.9MB. Free memory is still 133.3MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 152]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of bitwiseOr at line 122, overapproximation of someBinaryArithmeticDOUBLEoperation at line 146, overapproximation of bitwiseAnd at line 121, overapproximation of someBinaryDOUBLEComparisonOperation at line 151. Possible FailurePath: [L20] static const double one_modf = 1.0; [L146] double x = -1.0 / 0.0; [L147] double iptr = __VERIFIER_nondet_double(); [L148] CALL, EXPR modf_double(x, &iptr) [L23] __int32_t i0, i1, j0; [L24] __uint32_t i; VAL [#in~iptr={6:0}, iptr={6:0}, one_modf=1, unknown-#in~x-unknown=4294967316, x=4294967316] [L26] ieee_double_shape_type ew_u; [L27] ew_u.value = (x) [L28] EXPR ew_u.parts.msw [L28] (i0) = ew_u.parts.msw [L29] EXPR ew_u.parts.lsw [L29] (i1) = ew_u.parts.lsw [L31] j0 = ((i0 >> 20) & 0x7ff) - 0x3ff VAL [#in~iptr={6:0}, i0=-1048576, i1=-2, iptr={6:0}, j0=-1024, one_modf=1, unknown-#in~x-unknown=4294967316, x=4294967316] [L32] COND TRUE j0 < 20 VAL [#in~iptr={6:0}, i0=-1048576, i1=-2, iptr={6:0}, j0=-1024, one_modf=1, unknown-#in~x-unknown=4294967316, x=4294967316] [L33] COND TRUE j0 < 0 VAL [#in~iptr={6:0}, i0=-1048576, i1=-2, iptr={6:0}, j0=-1024, one_modf=1, unknown-#in~x-unknown=4294967316, x=4294967316] [L35] ieee_double_shape_type iw_u; [L36] iw_u.parts.msw = (i0 & 0x80000000) [L37] iw_u.parts.lsw = (0) [L38] EXPR iw_u.value [L38] (*iptr) = iw_u.value [L40] return x; VAL [#in~iptr={6:0}, \result=4294967316, i0=-1048576, i1=-2, iptr={6:0}, j0=-1024, one_modf=1, unknown-#in~x-unknown=4294967316, x=4294967316] [L148] RET, EXPR modf_double(x, &iptr) [L148] double res = modf_double(x, &iptr); [L151] EXPR \read(iptr) [L151] CALL, EXPR isinf_double(iptr) [L114] __int32_t hx, lx; VAL [one_modf=1, unknown-#in~x-unknown=4294967315, x=4294967315] [L116] ieee_double_shape_type ew_u; [L117] ew_u.value = (x) [L118] EXPR ew_u.parts.msw [L118] (hx) = ew_u.parts.msw [L119] EXPR ew_u.parts.lsw [L119] (lx) = ew_u.parts.lsw [L121] hx &= 0x7fffffff [L122] hx |= (__uint32_t)(lx | (-lx)) >> 31 [L123] hx = 0x7ff00000 - hx [L124] return 1 - (int)((__uint32_t)(hx | (-hx)) >> 31); [L151] RET, EXPR isinf_double(iptr) [L151] isinf_double(iptr) && !(res == -0.0 && __signbit_double(res) == 1) [L151] EXPR res == -0.0 && __signbit_double(res) == 1 VAL [\read(iptr)=4294967315, iptr={6:0}, isinf_double(iptr)=-2147483648, isinf_double(iptr) && !(res == -0.0 && __signbit_double(res) == 1)=1, one_modf=1, res=4294967316, res == -0.0 && __signbit_double(res) == 1=0, x=4294967316] [L151] isinf_double(iptr) && !(res == -0.0 && __signbit_double(res) == 1) VAL [\read(iptr)=4294967315, iptr={6:0}, isinf_double(iptr)=-2147483648, isinf_double(iptr) && !(res == -0.0 && __signbit_double(res) == 1)=1, one_modf=1, res=4294967316, res == -0.0 && __signbit_double(res) == 1=0, x=4294967316] [L151] COND TRUE isinf_double(iptr) && !(res == -0.0 && __signbit_double(res) == 1) [L152] reach_error() VAL [iptr={6:0}, one_modf=1, res=4294967316, x=4294967316] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 48 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.3s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 144 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 45 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 13 IncrementalHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 99 mSDtfsCounter, 13 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=48occurred in iteration=0, InterpolantAutomatonStates: 5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 47 NumberOfCodeBlocks, 47 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 27 ConstructedInterpolants, 0 QuantifiedInterpolants, 28 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 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 [2022-11-23 15:29:59,373 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57232db7-be4d-44b4-864b-f119beeaff74/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57232db7-be4d-44b4-864b-f119beeaff74/bin/utaipan-Q6hlc19bkW/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57232db7-be4d-44b4-864b-f119beeaff74/bin/utaipan-Q6hlc19bkW/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57232db7-be4d-44b4-864b-f119beeaff74/bin/utaipan-Q6hlc19bkW/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57232db7-be4d-44b4-864b-f119beeaff74/bin/utaipan-Q6hlc19bkW/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1211b.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57232db7-be4d-44b4-864b-f119beeaff74/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57232db7-be4d-44b4-864b-f119beeaff74/bin/utaipan-Q6hlc19bkW --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 357cd7c68915d75ef7cc5bde5b81cbcf327e780f04b059068444ae319e85eb5a --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-4e7fbc6 [2022-11-23 15:30:01,862 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 15:30:01,864 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 15:30:01,896 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 15:30:01,898 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 15:30:01,900 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 15:30:01,902 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 15:30:01,907 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 15:30:01,912 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 15:30:01,914 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 15:30:01,915 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 15:30:01,917 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 15:30:01,919 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 15:30:01,922 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 15:30:01,924 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 15:30:01,929 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 15:30:01,930 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 15:30:01,931 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 15:30:01,933 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 15:30:01,935 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 15:30:01,936 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 15:30:01,938 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 15:30:01,939 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 15:30:01,940 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 15:30:01,943 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 15:30:01,944 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 15:30:01,944 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 15:30:01,945 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 15:30:01,946 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 15:30:01,947 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 15:30:01,947 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 15:30:01,948 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 15:30:01,949 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 15:30:01,950 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 15:30:01,963 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 15:30:01,963 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 15:30:01,964 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 15:30:01,964 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 15:30:01,965 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 15:30:01,966 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 15:30:01,967 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 15:30:01,973 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57232db7-be4d-44b4-864b-f119beeaff74/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2022-11-23 15:30:02,021 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 15:30:02,022 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 15:30:02,024 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 15:30:02,024 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 15:30:02,025 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 15:30:02,025 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 15:30:02,026 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-23 15:30:02,026 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-23 15:30:02,026 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-23 15:30:02,027 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-23 15:30:02,028 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-23 15:30:02,028 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-23 15:30:02,029 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 15:30:02,029 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-23 15:30:02,030 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-23 15:30:02,030 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 15:30:02,030 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 15:30:02,030 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 15:30:02,031 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 15:30:02,031 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-23 15:30:02,031 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-23 15:30:02,032 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-23 15:30:02,032 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-23 15:30:02,032 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 15:30:02,033 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 15:30:02,033 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 15:30:02,033 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 15:30:02,034 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-23 15:30:02,034 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 15:30:02,034 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 15:30:02,035 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 15:30:02,035 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 15:30:02,035 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 15:30:02,036 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-11-23 15:30:02,036 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-23 15:30:02,036 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 15:30:02,037 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-23 15:30:02,037 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-23 15:30:02,037 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_57232db7-be4d-44b4-864b-f119beeaff74/bin/utaipan-Q6hlc19bkW/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57232db7-be4d-44b4-864b-f119beeaff74/bin/utaipan-Q6hlc19bkW Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 357cd7c68915d75ef7cc5bde5b81cbcf327e780f04b059068444ae319e85eb5a [2022-11-23 15:30:02,410 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 15:30:02,433 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 15:30:02,436 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 15:30:02,437 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 15:30:02,438 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 15:30:02,440 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57232db7-be4d-44b4-864b-f119beeaff74/bin/utaipan-Q6hlc19bkW/../../sv-benchmarks/c/float-newlib/double_req_bl_1211b.c [2022-11-23 15:30:05,451 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 15:30:05,654 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 15:30:05,655 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57232db7-be4d-44b4-864b-f119beeaff74/sv-benchmarks/c/float-newlib/double_req_bl_1211b.c [2022-11-23 15:30:05,663 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57232db7-be4d-44b4-864b-f119beeaff74/bin/utaipan-Q6hlc19bkW/data/898ed50f6/b17726db818e4d32bfb01b88ca888d07/FLAGe19d308ce [2022-11-23 15:30:05,687 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57232db7-be4d-44b4-864b-f119beeaff74/bin/utaipan-Q6hlc19bkW/data/898ed50f6/b17726db818e4d32bfb01b88ca888d07 [2022-11-23 15:30:05,693 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 15:30:05,695 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 15:30:05,700 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 15:30:05,704 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 15:30:05,709 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 15:30:05,711 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:30:05" (1/1) ... [2022-11-23 15:30:05,712 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d2a1f27 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:30:05, skipping insertion in model container [2022-11-23 15:30:05,712 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:30:05" (1/1) ... [2022-11-23 15:30:05,720 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 15:30:05,761 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 15:30:06,038 WARN L237 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_57232db7-be4d-44b4-864b-f119beeaff74/sv-benchmarks/c/float-newlib/double_req_bl_1211b.c[3718,3731] [2022-11-23 15:30:06,046 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 15:30:06,065 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 15:30:06,112 WARN L237 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_57232db7-be4d-44b4-864b-f119beeaff74/sv-benchmarks/c/float-newlib/double_req_bl_1211b.c[3718,3731] [2022-11-23 15:30:06,113 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 15:30:06,130 INFO L208 MainTranslator]: Completed translation [2022-11-23 15:30:06,130 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:30:06 WrapperNode [2022-11-23 15:30:06,130 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 15:30:06,132 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 15:30:06,132 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 15:30:06,132 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 15:30:06,140 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:30:06" (1/1) ... [2022-11-23 15:30:06,153 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:30:06" (1/1) ... [2022-11-23 15:30:06,182 INFO L138 Inliner]: procedures = 23, calls = 80, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 242 [2022-11-23 15:30:06,182 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 15:30:06,183 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 15:30:06,183 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 15:30:06,183 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 15:30:06,192 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:30:06" (1/1) ... [2022-11-23 15:30:06,193 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:30:06" (1/1) ... [2022-11-23 15:30:06,198 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:30:06" (1/1) ... [2022-11-23 15:30:06,198 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:30:06" (1/1) ... [2022-11-23 15:30:06,228 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:30:06" (1/1) ... [2022-11-23 15:30:06,234 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:30:06" (1/1) ... [2022-11-23 15:30:06,236 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:30:06" (1/1) ... [2022-11-23 15:30:06,238 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:30:06" (1/1) ... [2022-11-23 15:30:06,242 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 15:30:06,243 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 15:30:06,243 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 15:30:06,243 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 15:30:06,244 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:30:06" (1/1) ... [2022-11-23 15:30:06,255 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 15:30:06,268 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57232db7-be4d-44b4-864b-f119beeaff74/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:30:06,284 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57232db7-be4d-44b4-864b-f119beeaff74/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 15:30:06,311 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57232db7-be4d-44b4-864b-f119beeaff74/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 15:30:06,334 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 15:30:06,335 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2022-11-23 15:30:06,335 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2022-11-23 15:30:06,335 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-23 15:30:06,335 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-23 15:30:06,335 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8 [2022-11-23 15:30:06,335 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-11-23 15:30:06,335 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 15:30:06,336 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 15:30:06,336 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-11-23 15:30:06,336 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-23 15:30:06,475 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 15:30:06,480 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 15:30:07,370 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 15:30:07,376 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 15:30:07,377 INFO L300 CfgBuilder]: Removed 24 assume(true) statements. [2022-11-23 15:30:07,379 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:30:07 BoogieIcfgContainer [2022-11-23 15:30:07,379 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 15:30:07,381 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 15:30:07,381 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 15:30:07,385 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 15:30:07,385 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 03:30:05" (1/3) ... [2022-11-23 15:30:07,386 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f361bba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:30:07, skipping insertion in model container [2022-11-23 15:30:07,388 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:30:06" (2/3) ... [2022-11-23 15:30:07,388 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f361bba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:30:07, skipping insertion in model container [2022-11-23 15:30:07,389 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:30:07" (3/3) ... [2022-11-23 15:30:07,390 INFO L112 eAbstractionObserver]: Analyzing ICFG double_req_bl_1211b.c [2022-11-23 15:30:07,410 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 15:30:07,410 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-23 15:30:07,471 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 15:30:07,477 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@35e53c00, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 15:30:07,478 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-23 15:30:07,482 INFO L276 IsEmpty]: Start isEmpty. Operand has 52 states, 50 states have (on average 1.66) internal successors, (83), 51 states have internal predecessors, (83), 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) [2022-11-23 15:30:07,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-23 15:30:07,491 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:30:07,492 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:30:07,494 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:30:07,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:30:07,498 INFO L85 PathProgramCache]: Analyzing trace with hash -892017235, now seen corresponding path program 1 times [2022-11-23 15:30:07,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 15:30:07,515 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [333637565] [2022-11-23 15:30:07,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:30:07,515 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 15:30:07,516 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57232db7-be4d-44b4-864b-f119beeaff74/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 15:30:07,517 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57232db7-be4d-44b4-864b-f119beeaff74/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-23 15:30:07,519 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57232db7-be4d-44b4-864b-f119beeaff74/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-23 15:30:07,640 ERROR L418 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57232db7-be4d-44b4-864b-f119beeaff74/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Exception during sending of exit command (exit): Broken pipe [2022-11-23 15:30:07,643 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57232db7-be4d-44b4-864b-f119beeaff74/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 139 [2022-11-23 15:30:07,840 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57232db7-be4d-44b4-864b-f119beeaff74/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 15:30:07,841 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57232db7-be4d-44b4-864b-f119beeaff74/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2) with exit command (exit)) Received EOF on stdin. No stderr output. at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheck.(TraceCheck.java:236) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheck.(InterpolatingTraceCheck.java:91) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:132) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:209) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:121) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:336) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:262) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57232db7-be4d-44b4-864b-f119beeaff74/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2) with exit command (exit)) Received EOF on stdin. No stderr output. at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:243) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseCheckSatResult(Executor.java:262) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.checkSat(Scriptor.java:155) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.AnnotateAndAsserter.buildAnnotatedSsaAndAssertTerms(AnnotateAndAsserter.java:130) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheck.checkTrace(TraceCheck.java:317) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheck.(TraceCheck.java:215) ... 30 more Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: EOF at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1465) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:658) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:383) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:239) ... 37 more [2022-11-23 15:30:07,845 INFO L158 Benchmark]: Toolchain (without parser) took 2149.31ms. Allocated memory is still 81.8MB. Free memory was 59.0MB in the beginning and 51.1MB in the end (delta: 7.9MB). Peak memory consumption was 8.0MB. Max. memory is 16.1GB. [2022-11-23 15:30:07,846 INFO L158 Benchmark]: CDTParser took 0.31ms. Allocated memory is still 56.6MB. Free memory was 35.0MB in the beginning and 35.0MB in the end (delta: 37.9kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 15:30:07,847 INFO L158 Benchmark]: CACSL2BoogieTranslator took 430.36ms. Allocated memory is still 81.8MB. Free memory was 58.8MB in the beginning and 45.4MB in the end (delta: 13.4MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-11-23 15:30:07,847 INFO L158 Benchmark]: Boogie Procedure Inliner took 50.79ms. Allocated memory is still 81.8MB. Free memory was 45.4MB in the beginning and 43.1MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-23 15:30:07,848 INFO L158 Benchmark]: Boogie Preprocessor took 59.07ms. Allocated memory is still 81.8MB. Free memory was 43.1MB in the beginning and 61.8MB in the end (delta: -18.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-23 15:30:07,848 INFO L158 Benchmark]: RCFGBuilder took 1136.28ms. Allocated memory is still 81.8MB. Free memory was 61.8MB in the beginning and 38.4MB in the end (delta: 23.4MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2022-11-23 15:30:07,849 INFO L158 Benchmark]: TraceAbstraction took 462.70ms. Allocated memory is still 81.8MB. Free memory was 37.7MB in the beginning and 51.1MB in the end (delta: -13.4MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 15:30:07,852 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31ms. Allocated memory is still 56.6MB. Free memory was 35.0MB in the beginning and 35.0MB in the end (delta: 37.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 430.36ms. Allocated memory is still 81.8MB. Free memory was 58.8MB in the beginning and 45.4MB in the end (delta: 13.4MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 50.79ms. Allocated memory is still 81.8MB. Free memory was 45.4MB in the beginning and 43.1MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 59.07ms. Allocated memory is still 81.8MB. Free memory was 43.1MB in the beginning and 61.8MB in the end (delta: -18.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 1136.28ms. Allocated memory is still 81.8MB. Free memory was 61.8MB in the beginning and 38.4MB in the end (delta: 23.4MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * TraceAbstraction took 462.70ms. Allocated memory is still 81.8MB. Free memory was 37.7MB in the beginning and 51.1MB in the end (delta: -13.4MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57232db7-be4d-44b4-864b-f119beeaff74/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2) with exit command (exit)) Received EOF on stdin. No stderr output. de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57232db7-be4d-44b4-864b-f119beeaff74/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2) with exit command (exit)) Received EOF on stdin. No stderr output.: de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheck.(TraceCheck.java:236) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2022-11-23 15:30:07,902 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57232db7-be4d-44b4-864b-f119beeaff74/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: AssertionError: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57232db7-be4d-44b4-864b-f119beeaff74/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2) with exit command (exit)) Received EOF on stdin. No stderr output.