./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/square_4+soft_float_1-2a.c.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc693ec-4121-4f6a-ba44-15b96106fc42/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc693ec-4121-4f6a-ba44-15b96106fc42/bin/utaipan-I9t0OCRTmS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc693ec-4121-4f6a-ba44-15b96106fc42/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc693ec-4121-4f6a-ba44-15b96106fc42/bin/utaipan-I9t0OCRTmS/config/TaipanReach.xml -i ../../sv-benchmarks/c/combinations/square_4+soft_float_1-2a.c.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc693ec-4121-4f6a-ba44-15b96106fc42/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc693ec-4121-4f6a-ba44-15b96106fc42/bin/utaipan-I9t0OCRTmS --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 964037bccd5af2bec8208ce0f4b08447d41303350ff91bfe4b13e42b362dc54b --- 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-8393723 [2022-11-19 06:08:48,452 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 06:08:48,456 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 06:08:48,501 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 06:08:48,503 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 06:08:48,508 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 06:08:48,512 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 06:08:48,519 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 06:08:48,521 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 06:08:48,523 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 06:08:48,525 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 06:08:48,528 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 06:08:48,529 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 06:08:48,535 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 06:08:48,537 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 06:08:48,539 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 06:08:48,541 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 06:08:48,544 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 06:08:48,546 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 06:08:48,552 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 06:08:48,554 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 06:08:48,556 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 06:08:48,560 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 06:08:48,561 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 06:08:48,572 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 06:08:48,574 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 06:08:48,574 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 06:08:48,576 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 06:08:48,577 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 06:08:48,578 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 06:08:48,579 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 06:08:48,580 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 06:08:48,583 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 06:08:48,585 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 06:08:48,586 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 06:08:48,587 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 06:08:48,588 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 06:08:48,588 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 06:08:48,589 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 06:08:48,590 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 06:08:48,591 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 06:08:48,592 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc693ec-4121-4f6a-ba44-15b96106fc42/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-19 06:08:48,639 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 06:08:48,639 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 06:08:48,640 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 06:08:48,640 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 06:08:48,641 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 06:08:48,642 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 06:08:48,642 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 06:08:48,642 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 06:08:48,642 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 06:08:48,643 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-19 06:08:48,644 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 06:08:48,644 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 06:08:48,644 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-19 06:08:48,645 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-19 06:08:48,645 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 06:08:48,645 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-19 06:08:48,645 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-19 06:08:48,646 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-19 06:08:48,646 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 06:08:48,647 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-19 06:08:48,647 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-19 06:08:48,647 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-19 06:08:48,647 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 06:08:48,648 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-19 06:08:48,648 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 06:08:48,648 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-19 06:08:48,648 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-19 06:08:48,648 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-19 06:08:48,649 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 06:08:48,649 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-19 06:08:48,649 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 06:08:48,650 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 06:08:48,650 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 06:08:48,650 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 06:08:48,650 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-19 06:08:48,650 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 06:08:48,651 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-19 06:08:48,651 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-19 06:08:48,651 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-19 06:08:48,652 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-19 06:08:48,652 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 06:08:48,652 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_afc693ec-4121-4f6a-ba44-15b96106fc42/bin/utaipan-I9t0OCRTmS/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc693ec-4121-4f6a-ba44-15b96106fc42/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 964037bccd5af2bec8208ce0f4b08447d41303350ff91bfe4b13e42b362dc54b [2022-11-19 06:08:48,976 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 06:08:49,022 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 06:08:49,025 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 06:08:49,027 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 06:08:49,028 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 06:08:49,029 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc693ec-4121-4f6a-ba44-15b96106fc42/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/combinations/square_4+soft_float_1-2a.c.cil.c [2022-11-19 06:08:49,097 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc693ec-4121-4f6a-ba44-15b96106fc42/bin/utaipan-I9t0OCRTmS/data/1df2e4d1d/16afc6ffdbfe49fcbb42035dd5e3ea30/FLAG45e90c72a [2022-11-19 06:08:49,677 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 06:08:49,678 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc693ec-4121-4f6a-ba44-15b96106fc42/sv-benchmarks/c/combinations/square_4+soft_float_1-2a.c.cil.c [2022-11-19 06:08:49,695 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc693ec-4121-4f6a-ba44-15b96106fc42/bin/utaipan-I9t0OCRTmS/data/1df2e4d1d/16afc6ffdbfe49fcbb42035dd5e3ea30/FLAG45e90c72a [2022-11-19 06:08:50,011 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc693ec-4121-4f6a-ba44-15b96106fc42/bin/utaipan-I9t0OCRTmS/data/1df2e4d1d/16afc6ffdbfe49fcbb42035dd5e3ea30 [2022-11-19 06:08:50,014 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 06:08:50,016 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 06:08:50,019 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 06:08:50,019 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 06:08:50,024 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 06:08:50,025 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 06:08:50" (1/1) ... [2022-11-19 06:08:50,026 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@72e4a547 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:08:50, skipping insertion in model container [2022-11-19 06:08:50,026 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 06:08:50" (1/1) ... [2022-11-19 06:08:50,035 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 06:08:50,073 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 06:08:50,333 WARN L234 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_afc693ec-4121-4f6a-ba44-15b96106fc42/sv-benchmarks/c/combinations/square_4+soft_float_1-2a.c.cil.c[1999,2012] [2022-11-19 06:08:50,339 WARN L234 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_afc693ec-4121-4f6a-ba44-15b96106fc42/sv-benchmarks/c/combinations/square_4+soft_float_1-2a.c.cil.c[2393,2406] [2022-11-19 06:08:50,401 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 06:08:50,411 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 06:08:50,435 WARN L234 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_afc693ec-4121-4f6a-ba44-15b96106fc42/sv-benchmarks/c/combinations/square_4+soft_float_1-2a.c.cil.c[1999,2012] [2022-11-19 06:08:50,436 WARN L234 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_afc693ec-4121-4f6a-ba44-15b96106fc42/sv-benchmarks/c/combinations/square_4+soft_float_1-2a.c.cil.c[2393,2406] [2022-11-19 06:08:50,513 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 06:08:50,545 INFO L208 MainTranslator]: Completed translation [2022-11-19 06:08:50,545 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:08:50 WrapperNode [2022-11-19 06:08:50,546 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 06:08:50,559 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 06:08:50,559 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 06:08:50,559 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 06:08:50,572 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:08:50" (1/1) ... [2022-11-19 06:08:50,584 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:08:50" (1/1) ... [2022-11-19 06:08:50,619 INFO L138 Inliner]: procedures = 27, calls = 20, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 211 [2022-11-19 06:08:50,620 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 06:08:50,621 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 06:08:50,621 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 06:08:50,621 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 06:08:50,630 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:08:50" (1/1) ... [2022-11-19 06:08:50,631 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:08:50" (1/1) ... [2022-11-19 06:08:50,634 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:08:50" (1/1) ... [2022-11-19 06:08:50,634 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:08:50" (1/1) ... [2022-11-19 06:08:50,644 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:08:50" (1/1) ... [2022-11-19 06:08:50,653 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:08:50" (1/1) ... [2022-11-19 06:08:50,656 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:08:50" (1/1) ... [2022-11-19 06:08:50,658 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:08:50" (1/1) ... [2022-11-19 06:08:50,662 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 06:08:50,663 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 06:08:50,663 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 06:08:50,663 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 06:08:50,664 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:08:50" (1/1) ... [2022-11-19 06:08:50,685 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 06:08:50,700 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc693ec-4121-4f6a-ba44-15b96106fc42/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:08:50,714 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc693ec-4121-4f6a-ba44-15b96106fc42/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 06:08:50,739 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc693ec-4121-4f6a-ba44-15b96106fc42/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 06:08:50,771 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-19 06:08:50,771 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2022-11-19 06:08:50,771 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2022-11-19 06:08:50,771 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-19 06:08:50,772 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 06:08:50,772 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 06:08:50,772 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-19 06:08:50,772 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-19 06:08:50,872 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 06:08:50,875 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 06:08:51,527 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 06:08:51,914 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 06:08:51,914 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-19 06:08:51,917 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 06:08:51 BoogieIcfgContainer [2022-11-19 06:08:51,918 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 06:08:51,920 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 06:08:51,920 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 06:08:51,925 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 06:08:51,925 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 06:08:50" (1/3) ... [2022-11-19 06:08:51,926 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73fcbe0a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 06:08:51, skipping insertion in model container [2022-11-19 06:08:51,927 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:08:50" (2/3) ... [2022-11-19 06:08:51,927 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73fcbe0a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 06:08:51, skipping insertion in model container [2022-11-19 06:08:51,928 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 06:08:51" (3/3) ... [2022-11-19 06:08:51,929 INFO L112 eAbstractionObserver]: Analyzing ICFG square_4+soft_float_1-2a.c.cil.c [2022-11-19 06:08:51,953 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 06:08:51,953 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-19 06:08:52,020 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 06:08:52,032 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;@4599191d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 06:08:52,034 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-19 06:08:52,038 INFO L276 IsEmpty]: Start isEmpty. Operand has 51 states, 38 states have (on average 1.5526315789473684) internal successors, (59), 42 states have internal predecessors, (59), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-11-19 06:08:52,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-19 06:08:52,046 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:08:52,047 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-19 06:08:52,048 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:08:52,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:08:52,055 INFO L85 PathProgramCache]: Analyzing trace with hash 12644195, now seen corresponding path program 1 times [2022-11-19 06:08:52,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:08:52,068 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1208511010] [2022-11-19 06:08:52,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:08:52,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:08:52,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-19 06:08:52,196 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-19 06:08:52,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-19 06:08:52,231 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-19 06:08:52,234 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-19 06:08:52,235 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2022-11-19 06:08:52,238 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2022-11-19 06:08:52,239 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-19 06:08:52,245 INFO L444 BasicCegarLoop]: Path program histogram: [1] [2022-11-19 06:08:52,250 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-19 06:08:52,273 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 06:08:52 BoogieIcfgContainer [2022-11-19 06:08:52,274 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-19 06:08:52,274 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-19 06:08:52,275 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-19 06:08:52,275 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-19 06:08:52,276 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 06:08:51" (3/4) ... [2022-11-19 06:08:52,280 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-19 06:08:52,280 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-19 06:08:52,281 INFO L158 Benchmark]: Toolchain (without parser) took 2265.08ms. Allocated memory is still 146.8MB. Free memory was 109.4MB in the beginning and 117.5MB in the end (delta: -8.1MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-19 06:08:52,282 INFO L158 Benchmark]: CDTParser took 0.33ms. Allocated memory is still 146.8MB. Free memory is still 127.1MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-19 06:08:52,283 INFO L158 Benchmark]: CACSL2BoogieTranslator took 527.09ms. Allocated memory is still 146.8MB. Free memory was 109.1MB in the beginning and 118.2MB in the end (delta: -9.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-19 06:08:52,284 INFO L158 Benchmark]: Boogie Procedure Inliner took 60.98ms. Allocated memory is still 146.8MB. Free memory was 118.2MB in the beginning and 116.0MB in the end (delta: 2.2MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-19 06:08:52,284 INFO L158 Benchmark]: Boogie Preprocessor took 41.30ms. Allocated memory is still 146.8MB. Free memory was 116.0MB in the beginning and 114.0MB in the end (delta: 2.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-19 06:08:52,285 INFO L158 Benchmark]: RCFGBuilder took 1255.02ms. Allocated memory is still 146.8MB. Free memory was 114.0MB in the beginning and 65.8MB in the end (delta: 48.2MB). Peak memory consumption was 48.2MB. Max. memory is 16.1GB. [2022-11-19 06:08:52,286 INFO L158 Benchmark]: TraceAbstraction took 353.67ms. Allocated memory is still 146.8MB. Free memory was 65.1MB in the beginning and 117.5MB in the end (delta: -52.4MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-19 06:08:52,286 INFO L158 Benchmark]: Witness Printer took 5.86ms. Allocated memory is still 146.8MB. Free memory is still 117.5MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-19 06:08:52,290 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33ms. Allocated memory is still 146.8MB. Free memory is still 127.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 527.09ms. Allocated memory is still 146.8MB. Free memory was 109.1MB in the beginning and 118.2MB in the end (delta: -9.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 60.98ms. Allocated memory is still 146.8MB. Free memory was 118.2MB in the beginning and 116.0MB in the end (delta: 2.2MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 41.30ms. Allocated memory is still 146.8MB. Free memory was 116.0MB in the beginning and 114.0MB in the end (delta: 2.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 1255.02ms. Allocated memory is still 146.8MB. Free memory was 114.0MB in the beginning and 65.8MB in the end (delta: 48.2MB). Peak memory consumption was 48.2MB. Max. memory is 16.1GB. * TraceAbstraction took 353.67ms. Allocated memory is still 146.8MB. Free memory was 65.1MB in the beginning and 117.5MB in the end (delta: -52.4MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 5.86ms. Allocated memory is still 146.8MB. Free memory is still 117.5MB. There was no memory consumed. 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: [L403] COND TRUE __VERIFIER_nondet_int() [L404] 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 < 1.39844f) VAL [IN=53, x=53] [L48] reach_error() VAL [IN=53, x=53] - UnprovableResult [Line: 61]: 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, 51 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.2s, 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=51occurred 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 [2022-11-19 06:08:52,322 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc693ec-4121-4f6a-ba44-15b96106fc42/bin/utaipan-I9t0OCRTmS/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-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc693ec-4121-4f6a-ba44-15b96106fc42/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc693ec-4121-4f6a-ba44-15b96106fc42/bin/utaipan-I9t0OCRTmS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc693ec-4121-4f6a-ba44-15b96106fc42/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc693ec-4121-4f6a-ba44-15b96106fc42/bin/utaipan-I9t0OCRTmS/config/TaipanReach.xml -i ../../sv-benchmarks/c/combinations/square_4+soft_float_1-2a.c.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc693ec-4121-4f6a-ba44-15b96106fc42/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc693ec-4121-4f6a-ba44-15b96106fc42/bin/utaipan-I9t0OCRTmS --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 964037bccd5af2bec8208ce0f4b08447d41303350ff91bfe4b13e42b362dc54b --- 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-8393723 [2022-11-19 06:08:55,115 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 06:08:55,121 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 06:08:55,156 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 06:08:55,157 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 06:08:55,162 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 06:08:55,166 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 06:08:55,171 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 06:08:55,174 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 06:08:55,183 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 06:08:55,185 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 06:08:55,188 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 06:08:55,189 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 06:08:55,192 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 06:08:55,194 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 06:08:55,196 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 06:08:55,198 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 06:08:55,200 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 06:08:55,206 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 06:08:55,211 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 06:08:55,217 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 06:08:55,219 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 06:08:55,220 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 06:08:55,223 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 06:08:55,227 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 06:08:55,233 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 06:08:55,234 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 06:08:55,235 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 06:08:55,237 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 06:08:55,238 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 06:08:55,239 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 06:08:55,240 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 06:08:55,243 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 06:08:55,244 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 06:08:55,245 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 06:08:55,245 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 06:08:55,247 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 06:08:55,247 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 06:08:55,248 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 06:08:55,250 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 06:08:55,251 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 06:08:55,257 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc693ec-4121-4f6a-ba44-15b96106fc42/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2022-11-19 06:08:55,305 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 06:08:55,306 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 06:08:55,308 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 06:08:55,308 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 06:08:55,309 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 06:08:55,310 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 06:08:55,310 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 06:08:55,311 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 06:08:55,311 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 06:08:55,311 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 06:08:55,313 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 06:08:55,313 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 06:08:55,315 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 06:08:55,316 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-19 06:08:55,316 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-19 06:08:55,316 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 06:08:55,317 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-19 06:08:55,317 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 06:08:55,317 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-19 06:08:55,318 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-19 06:08:55,318 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-19 06:08:55,318 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-19 06:08:55,319 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-19 06:08:55,319 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-19 06:08:55,319 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 06:08:55,320 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-19 06:08:55,320 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 06:08:55,321 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-19 06:08:55,321 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 06:08:55,321 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 06:08:55,322 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 06:08:55,322 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 06:08:55,323 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-19 06:08:55,323 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-11-19 06:08:55,324 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-19 06:08:55,324 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-19 06:08:55,324 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 06:08:55,325 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-19 06:08:55,325 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_afc693ec-4121-4f6a-ba44-15b96106fc42/bin/utaipan-I9t0OCRTmS/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc693ec-4121-4f6a-ba44-15b96106fc42/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 964037bccd5af2bec8208ce0f4b08447d41303350ff91bfe4b13e42b362dc54b [2022-11-19 06:08:55,781 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 06:08:55,806 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 06:08:55,809 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 06:08:55,811 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 06:08:55,812 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 06:08:55,813 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc693ec-4121-4f6a-ba44-15b96106fc42/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/combinations/square_4+soft_float_1-2a.c.cil.c [2022-11-19 06:08:55,896 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc693ec-4121-4f6a-ba44-15b96106fc42/bin/utaipan-I9t0OCRTmS/data/066d446da/61de936ca5ed498380d5fa00c261521d/FLAGc9333560d [2022-11-19 06:08:56,468 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 06:08:56,469 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc693ec-4121-4f6a-ba44-15b96106fc42/sv-benchmarks/c/combinations/square_4+soft_float_1-2a.c.cil.c [2022-11-19 06:08:56,481 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc693ec-4121-4f6a-ba44-15b96106fc42/bin/utaipan-I9t0OCRTmS/data/066d446da/61de936ca5ed498380d5fa00c261521d/FLAGc9333560d [2022-11-19 06:08:56,814 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc693ec-4121-4f6a-ba44-15b96106fc42/bin/utaipan-I9t0OCRTmS/data/066d446da/61de936ca5ed498380d5fa00c261521d [2022-11-19 06:08:56,817 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 06:08:56,820 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 06:08:56,826 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 06:08:56,827 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 06:08:56,832 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 06:08:56,834 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 06:08:56" (1/1) ... [2022-11-19 06:08:56,835 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@76489060 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:08:56, skipping insertion in model container [2022-11-19 06:08:56,836 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 06:08:56" (1/1) ... [2022-11-19 06:08:56,845 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 06:08:56,911 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 06:08:57,158 WARN L234 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_afc693ec-4121-4f6a-ba44-15b96106fc42/sv-benchmarks/c/combinations/square_4+soft_float_1-2a.c.cil.c[1999,2012] [2022-11-19 06:08:57,188 WARN L234 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_afc693ec-4121-4f6a-ba44-15b96106fc42/sv-benchmarks/c/combinations/square_4+soft_float_1-2a.c.cil.c[2393,2406] [2022-11-19 06:08:57,294 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 06:08:57,322 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 06:08:57,356 WARN L234 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_afc693ec-4121-4f6a-ba44-15b96106fc42/sv-benchmarks/c/combinations/square_4+soft_float_1-2a.c.cil.c[1999,2012] [2022-11-19 06:08:57,360 WARN L234 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_afc693ec-4121-4f6a-ba44-15b96106fc42/sv-benchmarks/c/combinations/square_4+soft_float_1-2a.c.cil.c[2393,2406] [2022-11-19 06:08:57,406 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 06:08:57,431 INFO L208 MainTranslator]: Completed translation [2022-11-19 06:08:57,431 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:08:57 WrapperNode [2022-11-19 06:08:57,432 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 06:08:57,433 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 06:08:57,433 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 06:08:57,433 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 06:08:57,443 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:08:57" (1/1) ... [2022-11-19 06:08:57,456 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:08:57" (1/1) ... [2022-11-19 06:08:57,501 INFO L138 Inliner]: procedures = 28, calls = 20, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 165 [2022-11-19 06:08:57,506 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 06:08:57,507 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 06:08:57,509 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 06:08:57,509 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 06:08:57,519 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:08:57" (1/1) ... [2022-11-19 06:08:57,520 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:08:57" (1/1) ... [2022-11-19 06:08:57,535 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:08:57" (1/1) ... [2022-11-19 06:08:57,551 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:08:57" (1/1) ... [2022-11-19 06:08:57,560 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:08:57" (1/1) ... [2022-11-19 06:08:57,580 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:08:57" (1/1) ... [2022-11-19 06:08:57,582 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:08:57" (1/1) ... [2022-11-19 06:08:57,584 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:08:57" (1/1) ... [2022-11-19 06:08:57,589 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 06:08:57,603 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 06:08:57,604 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 06:08:57,604 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 06:08:57,605 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:08:57" (1/1) ... [2022-11-19 06:08:57,617 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 06:08:57,634 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc693ec-4121-4f6a-ba44-15b96106fc42/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:08:57,650 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc693ec-4121-4f6a-ba44-15b96106fc42/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 06:08:57,663 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc693ec-4121-4f6a-ba44-15b96106fc42/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 06:08:57,706 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-19 06:08:57,706 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-19 06:08:57,707 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2022-11-19 06:08:57,707 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2022-11-19 06:08:57,707 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 06:08:57,707 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 06:08:57,707 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-19 06:08:57,707 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-19 06:08:57,841 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 06:08:57,844 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 06:09:00,500 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 06:09:00,509 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 06:09:00,509 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-19 06:09:00,512 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 06:09:00 BoogieIcfgContainer [2022-11-19 06:09:00,512 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 06:09:00,515 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 06:09:00,515 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 06:09:00,519 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 06:09:00,519 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 06:08:56" (1/3) ... [2022-11-19 06:09:00,520 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56f321b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 06:09:00, skipping insertion in model container [2022-11-19 06:09:00,521 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:08:57" (2/3) ... [2022-11-19 06:09:00,521 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56f321b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 06:09:00, skipping insertion in model container [2022-11-19 06:09:00,521 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 06:09:00" (3/3) ... [2022-11-19 06:09:00,523 INFO L112 eAbstractionObserver]: Analyzing ICFG square_4+soft_float_1-2a.c.cil.c [2022-11-19 06:09:00,557 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 06:09:00,557 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-19 06:09:00,616 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 06:09:00,624 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;@de00bfd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 06:09:00,624 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-19 06:09:00,629 INFO L276 IsEmpty]: Start isEmpty. Operand has 81 states, 68 states have (on average 1.588235294117647) internal successors, (108), 72 states have internal predecessors, (108), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-11-19 06:09:00,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-19 06:09:00,638 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:09:00,639 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:09:00,640 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:09:00,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:09:00,646 INFO L85 PathProgramCache]: Analyzing trace with hash -548115930, now seen corresponding path program 1 times [2022-11-19 06:09:00,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 06:09:00,662 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1484098694] [2022-11-19 06:09:00,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:09:00,663 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 [2022-11-19 06:09:00,663 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc693ec-4121-4f6a-ba44-15b96106fc42/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 06:09:00,671 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc693ec-4121-4f6a-ba44-15b96106fc42/bin/utaipan-I9t0OCRTmS/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) [2022-11-19 06:09:00,712 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc693ec-4121-4f6a-ba44-15b96106fc42/bin/utaipan-I9t0OCRTmS/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 [2022-11-19 06:09:01,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:09:01,525 INFO L263 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 1 conjunts are in the unsatisfiable core [2022-11-19 06:09:01,529 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:09:01,552 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:09:01,553 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 06:09:01,554 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 06:09:01,554 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1484098694] [2022-11-19 06:09:01,555 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1484098694] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:09:01,555 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:09:01,556 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-19 06:09:01,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381223275] [2022-11-19 06:09:01,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:09:01,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-19 06:09:01,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 06:09:01,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-19 06:09:01,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-19 06:09:01,605 INFO L87 Difference]: Start difference. First operand has 81 states, 68 states have (on average 1.588235294117647) internal successors, (108), 72 states have internal predecessors, (108), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) 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) [2022-11-19 06:09:01,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:09:01,705 INFO L93 Difference]: Finished difference Result 157 states and 248 transitions. [2022-11-19 06:09:01,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-19 06:09:01,709 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 [2022-11-19 06:09:01,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:09:01,719 INFO L225 Difference]: With dead ends: 157 [2022-11-19 06:09:01,720 INFO L226 Difference]: Without dead ends: 74 [2022-11-19 06:09:01,724 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 [2022-11-19 06:09:01,728 INFO L413 NwaCegarLoop]: 116 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, 116 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 [2022-11-19 06:09:01,729 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 06:09:01,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2022-11-19 06:09:01,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2022-11-19 06:09:01,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 62 states have (on average 1.4838709677419355) internal successors, (92), 65 states have internal predecessors, (92), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-11-19 06:09:01,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 107 transitions. [2022-11-19 06:09:01,797 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 107 transitions. Word has length 7 [2022-11-19 06:09:01,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:09:01,800 INFO L495 AbstractCegarLoop]: Abstraction has 74 states and 107 transitions. [2022-11-19 06:09:01,800 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) [2022-11-19 06:09:01,801 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 107 transitions. [2022-11-19 06:09:01,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-19 06:09:01,803 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:09:01,804 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:09:01,832 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc693ec-4121-4f6a-ba44-15b96106fc42/bin/utaipan-I9t0OCRTmS/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 0 [2022-11-19 06:09:02,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc693ec-4121-4f6a-ba44-15b96106fc42/bin/utaipan-I9t0OCRTmS/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 [2022-11-19 06:09:02,007 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:09:02,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:09:02,008 INFO L85 PathProgramCache]: Analyzing trace with hash -548056348, now seen corresponding path program 1 times [2022-11-19 06:09:02,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 06:09:02,009 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1759174656] [2022-11-19 06:09:02,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:09:02,010 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 [2022-11-19 06:09:02,010 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc693ec-4121-4f6a-ba44-15b96106fc42/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 06:09:02,013 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc693ec-4121-4f6a-ba44-15b96106fc42/bin/utaipan-I9t0OCRTmS/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) [2022-11-19 06:09:02,059 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc693ec-4121-4f6a-ba44-15b96106fc42/bin/utaipan-I9t0OCRTmS/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