./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/square_5+soft_float_1-3a.c.cil.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_56524146-e3c5-4e6b-9175-4e641970eb1e/bin/utaipan-Q6hlc19bkW/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56524146-e3c5-4e6b-9175-4e641970eb1e/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_56524146-e3c5-4e6b-9175-4e641970eb1e/bin/utaipan-Q6hlc19bkW/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56524146-e3c5-4e6b-9175-4e641970eb1e/bin/utaipan-Q6hlc19bkW/config/TaipanReach.xml -i ../../sv-benchmarks/c/combinations/square_5+soft_float_1-3a.c.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56524146-e3c5-4e6b-9175-4e641970eb1e/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_56524146-e3c5-4e6b-9175-4e641970eb1e/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 6db80c50f6c3923c66cb027dfda5b1b6c51388d665fc6094a25deaee220bcef4 --- 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 15:11:47,929 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 15:11:47,932 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 15:11:47,959 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 15:11:47,959 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 15:11:47,961 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 15:11:47,962 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 15:11:47,965 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 15:11:47,967 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 15:11:47,968 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 15:11:47,969 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 15:11:47,971 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 15:11:47,971 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 15:11:47,973 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 15:11:47,974 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 15:11:47,976 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 15:11:47,977 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 15:11:47,978 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 15:11:47,980 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 15:11:47,983 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 15:11:47,985 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 15:11:47,987 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 15:11:47,988 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 15:11:47,990 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 15:11:47,994 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 15:11:47,995 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 15:11:47,995 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 15:11:47,997 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 15:11:47,997 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 15:11:47,999 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 15:11:47,999 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 15:11:48,000 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 15:11:48,002 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 15:11:48,003 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 15:11:48,004 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 15:11:48,005 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 15:11:48,006 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 15:11:48,006 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 15:11:48,007 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 15:11:48,008 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 15:11:48,009 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 15:11:48,010 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56524146-e3c5-4e6b-9175-4e641970eb1e/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-23 15:11:48,048 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 15:11:48,049 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 15:11:48,050 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 15:11:48,050 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 15:11:48,051 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 15:11:48,051 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 15:11:48,052 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-23 15:11:48,052 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-23 15:11:48,053 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-23 15:11:48,053 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-23 15:11:48,053 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-23 15:11:48,054 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-23 15:11:48,054 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-23 15:11:48,055 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-23 15:11:48,055 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-23 15:11:48,056 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-23 15:11:48,056 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-23 15:11:48,056 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-23 15:11:48,057 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 15:11:48,058 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-23 15:11:48,058 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 15:11:48,059 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-23 15:11:48,059 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 15:11:48,059 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 15:11:48,060 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 15:11:48,060 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 15:11:48,061 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-23 15:11:48,061 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 15:11:48,061 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 15:11:48,062 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 15:11:48,062 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 15:11:48,062 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 15:11:48,063 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 15:11:48,063 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 15:11:48,064 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-23 15:11:48,064 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 15:11:48,064 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 15:11:48,065 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-23 15:11:48,065 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 15:11:48,066 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 15:11:48,066 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-23 15:11:48,066 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_56524146-e3c5-4e6b-9175-4e641970eb1e/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56524146-e3c5-4e6b-9175-4e641970eb1e/bin/utaipan-Q6hlc19bkW Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6db80c50f6c3923c66cb027dfda5b1b6c51388d665fc6094a25deaee220bcef4 [2022-11-23 15:11:48,366 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 15:11:48,404 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 15:11:48,407 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 15:11:48,409 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 15:11:48,410 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 15:11:48,411 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56524146-e3c5-4e6b-9175-4e641970eb1e/bin/utaipan-Q6hlc19bkW/../../sv-benchmarks/c/combinations/square_5+soft_float_1-3a.c.cil.c [2022-11-23 15:11:51,562 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 15:11:51,800 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 15:11:51,801 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56524146-e3c5-4e6b-9175-4e641970eb1e/sv-benchmarks/c/combinations/square_5+soft_float_1-3a.c.cil.c [2022-11-23 15:11:51,810 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56524146-e3c5-4e6b-9175-4e641970eb1e/bin/utaipan-Q6hlc19bkW/data/37d7fd3bf/a32098a9d1e24c15be54d66dc41f6243/FLAG8568ae3d1 [2022-11-23 15:11:51,826 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56524146-e3c5-4e6b-9175-4e641970eb1e/bin/utaipan-Q6hlc19bkW/data/37d7fd3bf/a32098a9d1e24c15be54d66dc41f6243 [2022-11-23 15:11:51,829 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 15:11:51,830 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 15:11:51,832 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 15:11:51,832 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 15:11:51,836 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 15:11:51,837 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:11:51" (1/1) ... [2022-11-23 15:11:51,838 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f5a7bb5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:11:51, skipping insertion in model container [2022-11-23 15:11:51,839 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:11:51" (1/1) ... [2022-11-23 15:11:51,847 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 15:11:51,876 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 15:11:52,032 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_56524146-e3c5-4e6b-9175-4e641970eb1e/sv-benchmarks/c/combinations/square_5+soft_float_1-3a.c.cil.c[1998,2011] [2022-11-23 15:11:52,039 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_56524146-e3c5-4e6b-9175-4e641970eb1e/sv-benchmarks/c/combinations/square_5+soft_float_1-3a.c.cil.c[2367,2380] [2022-11-23 15:11:52,099 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 15:11:52,110 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 15:11:52,125 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_56524146-e3c5-4e6b-9175-4e641970eb1e/sv-benchmarks/c/combinations/square_5+soft_float_1-3a.c.cil.c[1998,2011] [2022-11-23 15:11:52,127 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_56524146-e3c5-4e6b-9175-4e641970eb1e/sv-benchmarks/c/combinations/square_5+soft_float_1-3a.c.cil.c[2367,2380] [2022-11-23 15:11:52,167 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 15:11:52,193 INFO L208 MainTranslator]: Completed translation [2022-11-23 15:11:52,194 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:11:52 WrapperNode [2022-11-23 15:11:52,194 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 15:11:52,200 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 15:11:52,200 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 15:11:52,200 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 15:11:52,208 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:11:52" (1/1) ... [2022-11-23 15:11:52,220 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:11:52" (1/1) ... [2022-11-23 15:11:52,263 INFO L138 Inliner]: procedures = 27, calls = 21, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 222 [2022-11-23 15:11:52,264 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 15:11:52,265 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 15:11:52,265 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 15:11:52,265 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 15:11:52,277 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:11:52" (1/1) ... [2022-11-23 15:11:52,277 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:11:52" (1/1) ... [2022-11-23 15:11:52,295 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:11:52" (1/1) ... [2022-11-23 15:11:52,295 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:11:52" (1/1) ... [2022-11-23 15:11:52,305 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:11:52" (1/1) ... [2022-11-23 15:11:52,311 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:11:52" (1/1) ... [2022-11-23 15:11:52,313 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:11:52" (1/1) ... [2022-11-23 15:11:52,315 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:11:52" (1/1) ... [2022-11-23 15:11:52,319 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 15:11:52,320 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 15:11:52,320 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 15:11:52,320 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 15:11:52,321 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:11:52" (1/1) ... [2022-11-23 15:11:52,330 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 15:11:52,345 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56524146-e3c5-4e6b-9175-4e641970eb1e/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:11:52,360 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56524146-e3c5-4e6b-9175-4e641970eb1e/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 15:11:52,375 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56524146-e3c5-4e6b-9175-4e641970eb1e/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 15:11:52,425 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 15:11:52,425 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2022-11-23 15:11:52,425 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2022-11-23 15:11:52,426 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-23 15:11:52,426 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 15:11:52,426 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 15:11:52,426 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-23 15:11:52,427 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-23 15:11:52,516 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 15:11:52,518 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 15:11:53,102 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 15:11:53,443 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 15:11:53,444 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-23 15:11:53,447 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:11:53 BoogieIcfgContainer [2022-11-23 15:11:53,447 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 15:11:53,450 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 15:11:53,450 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 15:11:53,454 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 15:11:53,455 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 03:11:51" (1/3) ... [2022-11-23 15:11:53,455 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c97dc59 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:11:53, skipping insertion in model container [2022-11-23 15:11:53,456 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:11:52" (2/3) ... [2022-11-23 15:11:53,456 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c97dc59 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:11:53, skipping insertion in model container [2022-11-23 15:11:53,456 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:11:53" (3/3) ... [2022-11-23 15:11:53,458 INFO L112 eAbstractionObserver]: Analyzing ICFG square_5+soft_float_1-3a.c.cil.c [2022-11-23 15:11:53,481 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 15:11:53,482 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-23 15:11:53,541 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 15:11:53,549 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;@43c81ba4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 15:11:53,549 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-23 15:11:53,554 INFO L276 IsEmpty]: Start isEmpty. Operand has 53 states, 39 states have (on average 1.5384615384615385) internal successors, (60), 43 states have internal predecessors, (60), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2022-11-23 15:11:53,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-23 15:11:53,562 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:11:53,563 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-23 15:11:53,564 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:11:53,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:11:53,571 INFO L85 PathProgramCache]: Analyzing trace with hash 12620202, now seen corresponding path program 1 times [2022-11-23 15:11:53,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:11:53,584 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2144273932] [2022-11-23 15:11:53,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:11:53,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:11:53,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-23 15:11:53,713 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-23 15:11:53,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-23 15:11:53,758 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-23 15:11:53,761 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-23 15:11:53,763 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2022-11-23 15:11:53,766 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2022-11-23 15:11:53,768 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-23 15:11:53,774 INFO L444 BasicCegarLoop]: Path program histogram: [1] [2022-11-23 15:11:53,779 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-23 15:11:53,807 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 03:11:53 BoogieIcfgContainer [2022-11-23 15:11:53,808 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-23 15:11:53,812 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-23 15:11:53,812 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-23 15:11:53,812 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-23 15:11:53,813 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:11:53" (3/4) ... [2022-11-23 15:11:53,817 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-23 15:11:53,818 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-23 15:11:53,820 INFO L158 Benchmark]: Toolchain (without parser) took 1988.99ms. Allocated memory was 180.4MB in the beginning and 228.6MB in the end (delta: 48.2MB). Free memory was 138.1MB in the beginning and 178.3MB in the end (delta: -40.2MB). Peak memory consumption was 12.3MB. Max. memory is 16.1GB. [2022-11-23 15:11:53,821 INFO L158 Benchmark]: CDTParser took 0.34ms. Allocated memory is still 180.4MB. Free memory was 148.7MB in the beginning and 148.6MB in the end (delta: 161.0kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 15:11:53,822 INFO L158 Benchmark]: CACSL2BoogieTranslator took 367.39ms. Allocated memory is still 180.4MB. Free memory was 138.1MB in the beginning and 122.8MB in the end (delta: 15.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2022-11-23 15:11:53,824 INFO L158 Benchmark]: Boogie Procedure Inliner took 64.24ms. Allocated memory is still 180.4MB. Free memory was 122.8MB in the beginning and 120.2MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-23 15:11:53,831 INFO L158 Benchmark]: Boogie Preprocessor took 54.52ms. Allocated memory is still 180.4MB. Free memory was 120.2MB in the beginning and 118.6MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-23 15:11:53,833 INFO L158 Benchmark]: RCFGBuilder took 1127.51ms. Allocated memory was 180.4MB in the beginning and 228.6MB in the end (delta: 48.2MB). Free memory was 118.6MB in the beginning and 193.0MB in the end (delta: -74.3MB). Peak memory consumption was 60.5MB. Max. memory is 16.1GB. [2022-11-23 15:11:53,833 INFO L158 Benchmark]: TraceAbstraction took 358.52ms. Allocated memory is still 228.6MB. Free memory was 193.0MB in the beginning and 178.3MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-11-23 15:11:53,834 INFO L158 Benchmark]: Witness Printer took 6.24ms. Allocated memory is still 228.6MB. Free memory was 178.3MB in the beginning and 178.3MB in the end (delta: 2.0kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-23 15:11:53,844 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34ms. Allocated memory is still 180.4MB. Free memory was 148.7MB in the beginning and 148.6MB in the end (delta: 161.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 367.39ms. Allocated memory is still 180.4MB. Free memory was 138.1MB in the beginning and 122.8MB in the end (delta: 15.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 64.24ms. Allocated memory is still 180.4MB. Free memory was 122.8MB in the beginning and 120.2MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 54.52ms. Allocated memory is still 180.4MB. Free memory was 120.2MB in the beginning and 118.6MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 1127.51ms. Allocated memory was 180.4MB in the beginning and 228.6MB in the end (delta: 48.2MB). Free memory was 118.6MB in the beginning and 193.0MB in the end (delta: -74.3MB). Peak memory consumption was 60.5MB. Max. memory is 16.1GB. * TraceAbstraction took 358.52ms. Allocated memory is still 228.6MB. Free memory was 193.0MB in the beginning and 178.3MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Witness Printer took 6.24ms. Allocated memory is still 228.6MB. Free memory was 178.3MB in the beginning and 178.3MB in the end (delta: 2.0kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * 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: 48]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 47, overapproximation of someBinaryArithmeticFLOAToperation at line 45. Possible FailurePath: [L402] COND TRUE __VERIFIER_nondet_int() [L403] CALL main1() [L39] float IN = __VERIFIER_nondet_float(); [L40] CALL assume_abort_if_not(IN >= 0.0f && IN < 1.0f) [L34] COND FALSE !(!cond) [L40] RET assume_abort_if_not(IN >= 0.0f && IN < 1.0f) [L42] float x = IN; [L44-L45] float result = 1.0f + 0.5f*x - 0.125f*x*x + 0.0625f*x*x*x - 0.0390625f*x*x*x*x; VAL [IN=53, x=53] [L47] COND TRUE !(result >= 0.0f && result < 1.3985f) VAL [IN=53, x=53] [L48] reach_error() VAL [IN=53, x=53] - UnprovableResult [Line: 60]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 53 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.3s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=53occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 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 15:11:53,883 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56524146-e3c5-4e6b-9175-4e641970eb1e/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_56524146-e3c5-4e6b-9175-4e641970eb1e/bin/utaipan-Q6hlc19bkW/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56524146-e3c5-4e6b-9175-4e641970eb1e/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_56524146-e3c5-4e6b-9175-4e641970eb1e/bin/utaipan-Q6hlc19bkW/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56524146-e3c5-4e6b-9175-4e641970eb1e/bin/utaipan-Q6hlc19bkW/config/TaipanReach.xml -i ../../sv-benchmarks/c/combinations/square_5+soft_float_1-3a.c.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56524146-e3c5-4e6b-9175-4e641970eb1e/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_56524146-e3c5-4e6b-9175-4e641970eb1e/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 6db80c50f6c3923c66cb027dfda5b1b6c51388d665fc6094a25deaee220bcef4 --- 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 15:11:56,510 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 15:11:56,513 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 15:11:56,539 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 15:11:56,540 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 15:11:56,544 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 15:11:56,549 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 15:11:56,553 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 15:11:56,556 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 15:11:56,562 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 15:11:56,563 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 15:11:56,564 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 15:11:56,564 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 15:11:56,565 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 15:11:56,566 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 15:11:56,567 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 15:11:56,568 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 15:11:56,569 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 15:11:56,571 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 15:11:56,573 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 15:11:56,578 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 15:11:56,582 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 15:11:56,584 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 15:11:56,588 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 15:11:56,602 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 15:11:56,602 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 15:11:56,603 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 15:11:56,604 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 15:11:56,604 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 15:11:56,605 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 15:11:56,605 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 15:11:56,606 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 15:11:56,607 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 15:11:56,608 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 15:11:56,609 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 15:11:56,617 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 15:11:56,618 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 15:11:56,619 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 15:11:56,619 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 15:11:56,621 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 15:11:56,621 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 15:11:56,627 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56524146-e3c5-4e6b-9175-4e641970eb1e/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2022-11-23 15:11:56,673 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 15:11:56,674 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 15:11:56,675 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 15:11:56,676 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 15:11:56,677 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 15:11:56,677 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 15:11:56,677 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-23 15:11:56,678 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-23 15:11:56,678 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-23 15:11:56,678 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-23 15:11:56,679 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-23 15:11:56,680 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-23 15:11:56,681 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 15:11:56,681 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-23 15:11:56,681 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-23 15:11:56,682 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 15:11:56,682 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 15:11:56,682 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 15:11:56,682 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 15:11:56,683 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-23 15:11:56,683 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-23 15:11:56,683 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-23 15:11:56,683 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-23 15:11:56,684 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 15:11:56,684 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 15:11:56,684 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 15:11:56,684 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 15:11:56,685 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-23 15:11:56,685 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 15:11:56,685 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 15:11:56,686 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 15:11:56,686 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 15:11:56,686 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 15:11:56,687 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-11-23 15:11:56,687 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-23 15:11:56,687 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 15:11:56,687 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-23 15:11:56,688 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-23 15:11:56,688 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_56524146-e3c5-4e6b-9175-4e641970eb1e/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56524146-e3c5-4e6b-9175-4e641970eb1e/bin/utaipan-Q6hlc19bkW Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6db80c50f6c3923c66cb027dfda5b1b6c51388d665fc6094a25deaee220bcef4 [2022-11-23 15:11:57,086 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 15:11:57,112 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 15:11:57,116 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 15:11:57,117 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 15:11:57,118 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 15:11:57,120 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56524146-e3c5-4e6b-9175-4e641970eb1e/bin/utaipan-Q6hlc19bkW/../../sv-benchmarks/c/combinations/square_5+soft_float_1-3a.c.cil.c [2022-11-23 15:12:00,479 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 15:12:00,793 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 15:12:00,795 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56524146-e3c5-4e6b-9175-4e641970eb1e/sv-benchmarks/c/combinations/square_5+soft_float_1-3a.c.cil.c [2022-11-23 15:12:00,809 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56524146-e3c5-4e6b-9175-4e641970eb1e/bin/utaipan-Q6hlc19bkW/data/5b2cb8971/3668b21aed75438ab0a69a2e43e2b614/FLAG6c26c23ae [2022-11-23 15:12:00,832 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56524146-e3c5-4e6b-9175-4e641970eb1e/bin/utaipan-Q6hlc19bkW/data/5b2cb8971/3668b21aed75438ab0a69a2e43e2b614 [2022-11-23 15:12:00,837 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 15:12:00,839 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 15:12:00,843 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 15:12:00,843 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 15:12:00,847 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 15:12:00,848 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:12:00" (1/1) ... [2022-11-23 15:12:00,849 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c9ff029 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:12:00, skipping insertion in model container [2022-11-23 15:12:00,849 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:12:00" (1/1) ... [2022-11-23 15:12:00,857 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 15:12:00,915 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 15:12:01,159 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_56524146-e3c5-4e6b-9175-4e641970eb1e/sv-benchmarks/c/combinations/square_5+soft_float_1-3a.c.cil.c[1998,2011] [2022-11-23 15:12:01,166 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_56524146-e3c5-4e6b-9175-4e641970eb1e/sv-benchmarks/c/combinations/square_5+soft_float_1-3a.c.cil.c[2367,2380] [2022-11-23 15:12:01,242 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 15:12:01,257 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 15:12:01,274 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_56524146-e3c5-4e6b-9175-4e641970eb1e/sv-benchmarks/c/combinations/square_5+soft_float_1-3a.c.cil.c[1998,2011] [2022-11-23 15:12:01,276 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_56524146-e3c5-4e6b-9175-4e641970eb1e/sv-benchmarks/c/combinations/square_5+soft_float_1-3a.c.cil.c[2367,2380] [2022-11-23 15:12:01,305 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 15:12:01,322 INFO L208 MainTranslator]: Completed translation [2022-11-23 15:12:01,323 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:12:01 WrapperNode [2022-11-23 15:12:01,323 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 15:12:01,325 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 15:12:01,325 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 15:12:01,325 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 15:12:01,334 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:12:01" (1/1) ... [2022-11-23 15:12:01,347 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:12:01" (1/1) ... [2022-11-23 15:12:01,374 INFO L138 Inliner]: procedures = 28, calls = 21, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 164 [2022-11-23 15:12:01,375 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 15:12:01,375 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 15:12:01,376 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 15:12:01,376 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 15:12:01,387 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:12:01" (1/1) ... [2022-11-23 15:12:01,388 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:12:01" (1/1) ... [2022-11-23 15:12:01,392 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:12:01" (1/1) ... [2022-11-23 15:12:01,393 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:12:01" (1/1) ... [2022-11-23 15:12:01,402 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:12:01" (1/1) ... [2022-11-23 15:12:01,407 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:12:01" (1/1) ... [2022-11-23 15:12:01,409 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:12:01" (1/1) ... [2022-11-23 15:12:01,411 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:12:01" (1/1) ... [2022-11-23 15:12:01,415 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 15:12:01,416 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 15:12:01,417 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 15:12:01,417 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 15:12:01,418 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:12:01" (1/1) ... [2022-11-23 15:12:01,425 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 15:12:01,448 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56524146-e3c5-4e6b-9175-4e641970eb1e/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:12:01,467 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56524146-e3c5-4e6b-9175-4e641970eb1e/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 15:12:01,473 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56524146-e3c5-4e6b-9175-4e641970eb1e/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 15:12:01,508 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 15:12:01,509 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-23 15:12:01,509 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2022-11-23 15:12:01,509 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2022-11-23 15:12:01,509 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 15:12:01,510 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 15:12:01,510 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-23 15:12:01,510 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-23 15:12:01,599 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 15:12:01,601 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 15:12:04,255 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 15:12:04,264 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 15:12:04,264 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-23 15:12:04,267 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:12:04 BoogieIcfgContainer [2022-11-23 15:12:04,267 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 15:12:04,269 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 15:12:04,270 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 15:12:04,273 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 15:12:04,274 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 03:12:00" (1/3) ... [2022-11-23 15:12:04,275 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28d5a69c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:12:04, skipping insertion in model container [2022-11-23 15:12:04,275 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:12:01" (2/3) ... [2022-11-23 15:12:04,275 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28d5a69c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:12:04, skipping insertion in model container [2022-11-23 15:12:04,275 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:12:04" (3/3) ... [2022-11-23 15:12:04,277 INFO L112 eAbstractionObserver]: Analyzing ICFG square_5+soft_float_1-3a.c.cil.c [2022-11-23 15:12:04,299 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 15:12:04,299 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-23 15:12:04,356 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 15:12:04,364 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;@41adf31f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 15:12:04,364 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-23 15:12:04,369 INFO L276 IsEmpty]: Start isEmpty. Operand has 81 states, 67 states have (on average 1.5820895522388059) internal successors, (106), 71 states have internal predecessors, (106), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2022-11-23 15:12:04,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-23 15:12:04,377 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:12:04,378 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:12:04,379 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:12:04,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:12:04,386 INFO L85 PathProgramCache]: Analyzing trace with hash -548115930, now seen corresponding path program 1 times [2022-11-23 15:12:04,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 15:12:04,401 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1991173790] [2022-11-23 15:12:04,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:12:04,402 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 15:12:04,402 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56524146-e3c5-4e6b-9175-4e641970eb1e/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 15:12:04,410 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56524146-e3c5-4e6b-9175-4e641970eb1e/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 15:12:04,422 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56524146-e3c5-4e6b-9175-4e641970eb1e/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 15:12:05,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:12:05,224 INFO L263 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 1 conjunts are in the unsatisfiable core [2022-11-23 15:12:05,227 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:12:05,248 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 15:12:05,248 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 15:12:05,249 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 15:12:05,250 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1991173790] [2022-11-23 15:12:05,250 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1991173790] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:12:05,251 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:12:05,251 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 15:12:05,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656894076] [2022-11-23 15:12:05,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:12:05,258 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-23 15:12:05,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-23 15:12:05,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-23 15:12:05,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-23 15:12:05,292 INFO L87 Difference]: Start difference. First operand has 81 states, 67 states have (on average 1.5820895522388059) internal successors, (106), 71 states have internal predecessors, (106), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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 15:12:05,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:12:05,332 INFO L93 Difference]: Finished difference Result 157 states and 249 transitions. [2022-11-23 15:12:05,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-23 15:12:05,335 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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 7 [2022-11-23 15:12:05,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:12:05,345 INFO L225 Difference]: With dead ends: 157 [2022-11-23 15:12:05,346 INFO L226 Difference]: Without dead ends: 74 [2022-11-23 15:12:05,350 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 6 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 15:12:05,354 INFO L413 NwaCegarLoop]: 117 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 15:12:05,356 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 15:12:05,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2022-11-23 15:12:05,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2022-11-23 15:12:05,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 61 states have (on average 1.4918032786885247) internal successors, (91), 64 states have internal predecessors, (91), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-11-23 15:12:05,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 108 transitions. [2022-11-23 15:12:05,410 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 108 transitions. Word has length 7 [2022-11-23 15:12:05,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:12:05,412 INFO L495 AbstractCegarLoop]: Abstraction has 74 states and 108 transitions. [2022-11-23 15:12:05,412 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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 15:12:05,413 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 108 transitions. [2022-11-23 15:12:05,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-23 15:12:05,415 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:12:05,416 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:12:05,443 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56524146-e3c5-4e6b-9175-4e641970eb1e/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)] Ended with exit code 0 [2022-11-23 15:12:05,630 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56524146-e3c5-4e6b-9175-4e641970eb1e/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 15:12:05,631 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:12:05,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:12:05,632 INFO L85 PathProgramCache]: Analyzing trace with hash -548056348, now seen corresponding path program 1 times [2022-11-23 15:12:05,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 15:12:05,633 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2007442501] [2022-11-23 15:12:05,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:12:05,633 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 15:12:05,633 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56524146-e3c5-4e6b-9175-4e641970eb1e/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 15:12:05,634 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56524146-e3c5-4e6b-9175-4e641970eb1e/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 15:12:05,639 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56524146-e3c5-4e6b-9175-4e641970eb1e/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 (3)] Waiting until timeout for monitored process