./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/square_3+soft_float_4-2a.c.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e04fb08f 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_a09b4df8-ecbb-46a1-8e36-97ff5e7602a1/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a09b4df8-ecbb-46a1-8e36-97ff5e7602a1/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a09b4df8-ecbb-46a1-8e36-97ff5e7602a1/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a09b4df8-ecbb-46a1-8e36-97ff5e7602a1/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/square_3+soft_float_4-2a.c.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a09b4df8-ecbb-46a1-8e36-97ff5e7602a1/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a09b4df8-ecbb-46a1-8e36-97ff5e7602a1/bin/uautomizer-tPACEb0tL8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 4ba0922fbaee541ed4ded1889d0ea25cfcdd1e879f7757f1ef1aa76d5475dafa --- 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-e04fb08 [2022-11-16 10:54:54,408 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 10:54:54,410 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 10:54:54,433 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 10:54:54,434 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 10:54:54,435 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 10:54:54,437 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 10:54:54,439 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 10:54:54,441 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 10:54:54,442 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 10:54:54,444 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 10:54:54,445 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 10:54:54,446 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 10:54:54,447 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 10:54:54,449 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 10:54:54,450 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 10:54:54,451 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 10:54:54,452 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 10:54:54,454 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 10:54:54,457 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 10:54:54,459 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 10:54:54,468 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 10:54:54,469 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 10:54:54,470 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 10:54:54,475 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 10:54:54,485 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 10:54:54,486 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 10:54:54,487 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 10:54:54,487 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 10:54:54,488 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 10:54:54,489 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 10:54:54,490 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 10:54:54,491 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 10:54:54,493 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 10:54:54,495 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 10:54:54,496 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 10:54:54,497 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 10:54:54,498 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 10:54:54,499 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 10:54:54,500 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 10:54:54,501 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 10:54:54,502 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a09b4df8-ecbb-46a1-8e36-97ff5e7602a1/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-16 10:54:54,528 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 10:54:54,528 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 10:54:54,529 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 10:54:54,529 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 10:54:54,530 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 10:54:54,530 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 10:54:54,531 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 10:54:54,531 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 10:54:54,532 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 10:54:54,532 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 10:54:54,532 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 10:54:54,532 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 10:54:54,533 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 10:54:54,533 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 10:54:54,533 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 10:54:54,533 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 10:54:54,534 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 10:54:54,534 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 10:54:54,534 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 10:54:54,534 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 10:54:54,535 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 10:54:54,535 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 10:54:54,535 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 10:54:54,536 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 10:54:54,536 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 10:54:54,536 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 10:54:54,536 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 10:54:54,537 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 10:54:54,537 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 10:54:54,537 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 10:54:54,537 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 10:54:54,538 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 10:54:54,538 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 10:54:54,538 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_a09b4df8-ecbb-46a1-8e36-97ff5e7602a1/bin/uautomizer-tPACEb0tL8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a09b4df8-ecbb-46a1-8e36-97ff5e7602a1/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4ba0922fbaee541ed4ded1889d0ea25cfcdd1e879f7757f1ef1aa76d5475dafa [2022-11-16 10:54:54,837 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 10:54:54,866 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 10:54:54,870 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 10:54:54,871 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 10:54:54,872 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 10:54:54,874 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a09b4df8-ecbb-46a1-8e36-97ff5e7602a1/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/combinations/square_3+soft_float_4-2a.c.cil.c [2022-11-16 10:54:54,961 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a09b4df8-ecbb-46a1-8e36-97ff5e7602a1/bin/uautomizer-tPACEb0tL8/data/420f1c2ce/5c610676d6ee490cbc0e0cff1d17d300/FLAGdff584adb [2022-11-16 10:54:55,540 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 10:54:55,541 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a09b4df8-ecbb-46a1-8e36-97ff5e7602a1/sv-benchmarks/c/combinations/square_3+soft_float_4-2a.c.cil.c [2022-11-16 10:54:55,554 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a09b4df8-ecbb-46a1-8e36-97ff5e7602a1/bin/uautomizer-tPACEb0tL8/data/420f1c2ce/5c610676d6ee490cbc0e0cff1d17d300/FLAGdff584adb [2022-11-16 10:54:55,861 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a09b4df8-ecbb-46a1-8e36-97ff5e7602a1/bin/uautomizer-tPACEb0tL8/data/420f1c2ce/5c610676d6ee490cbc0e0cff1d17d300 [2022-11-16 10:54:55,864 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 10:54:55,866 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 10:54:55,874 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 10:54:55,875 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 10:54:55,879 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 10:54:55,880 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 10:54:55" (1/1) ... [2022-11-16 10:54:55,882 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30025469 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:54:55, skipping insertion in model container [2022-11-16 10:54:55,882 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 10:54:55" (1/1) ... [2022-11-16 10:54:55,901 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 10:54:55,948 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 10:54:56,144 WARN L229 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_a09b4df8-ecbb-46a1-8e36-97ff5e7602a1/sv-benchmarks/c/combinations/square_3+soft_float_4-2a.c.cil.c[1999,2012] [2022-11-16 10:54:56,150 WARN L229 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_a09b4df8-ecbb-46a1-8e36-97ff5e7602a1/sv-benchmarks/c/combinations/square_3+soft_float_4-2a.c.cil.c[2393,2406] [2022-11-16 10:54:56,194 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 10:54:56,204 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 10:54:56,221 WARN L229 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_a09b4df8-ecbb-46a1-8e36-97ff5e7602a1/sv-benchmarks/c/combinations/square_3+soft_float_4-2a.c.cil.c[1999,2012] [2022-11-16 10:54:56,227 WARN L229 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_a09b4df8-ecbb-46a1-8e36-97ff5e7602a1/sv-benchmarks/c/combinations/square_3+soft_float_4-2a.c.cil.c[2393,2406] [2022-11-16 10:54:56,282 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 10:54:56,305 INFO L208 MainTranslator]: Completed translation [2022-11-16 10:54:56,305 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:54:56 WrapperNode [2022-11-16 10:54:56,305 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 10:54:56,306 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 10:54:56,307 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 10:54:56,307 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 10:54:56,316 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:54:56" (1/1) ... [2022-11-16 10:54:56,344 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:54:56" (1/1) ... [2022-11-16 10:54:56,365 INFO L138 Inliner]: procedures = 27, calls = 19, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 74 [2022-11-16 10:54:56,366 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 10:54:56,367 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 10:54:56,367 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 10:54:56,367 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 10:54:56,377 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:54:56" (1/1) ... [2022-11-16 10:54:56,377 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:54:56" (1/1) ... [2022-11-16 10:54:56,383 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:54:56" (1/1) ... [2022-11-16 10:54:56,383 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:54:56" (1/1) ... [2022-11-16 10:54:56,391 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:54:56" (1/1) ... [2022-11-16 10:54:56,413 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:54:56" (1/1) ... [2022-11-16 10:54:56,415 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:54:56" (1/1) ... [2022-11-16 10:54:56,417 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:54:56" (1/1) ... [2022-11-16 10:54:56,420 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 10:54:56,435 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 10:54:56,435 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 10:54:56,435 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 10:54:56,436 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:54:56" (1/1) ... [2022-11-16 10:54:56,448 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 10:54:56,473 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a09b4df8-ecbb-46a1-8e36-97ff5e7602a1/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 10:54:56,500 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a09b4df8-ecbb-46a1-8e36-97ff5e7602a1/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 10:54:56,527 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a09b4df8-ecbb-46a1-8e36-97ff5e7602a1/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 10:54:56,571 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 10:54:56,572 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2022-11-16 10:54:56,572 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2022-11-16 10:54:56,572 INFO L130 BoogieDeclarations]: Found specification of procedure addflt [2022-11-16 10:54:56,574 INFO L138 BoogieDeclarations]: Found implementation of procedure addflt [2022-11-16 10:54:56,574 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 10:54:56,575 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 10:54:56,575 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 10:54:56,575 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-16 10:54:56,576 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-16 10:54:56,706 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 10:54:56,708 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 10:54:57,120 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 10:54:57,145 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 10:54:57,146 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-16 10:54:57,148 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 10:54:57 BoogieIcfgContainer [2022-11-16 10:54:57,148 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 10:54:57,151 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 10:54:57,166 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 10:54:57,170 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 10:54:57,171 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 10:54:55" (1/3) ... [2022-11-16 10:54:57,172 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14bc61e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 10:54:57, skipping insertion in model container [2022-11-16 10:54:57,172 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:54:56" (2/3) ... [2022-11-16 10:54:57,173 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14bc61e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 10:54:57, skipping insertion in model container [2022-11-16 10:54:57,173 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 10:54:57" (3/3) ... [2022-11-16 10:54:57,175 INFO L112 eAbstractionObserver]: Analyzing ICFG square_3+soft_float_4-2a.c.cil.c [2022-11-16 10:54:57,204 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 10:54:57,204 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-16 10:54:57,286 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 10:54:57,293 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=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@582fa496, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 10:54:57,293 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-16 10:54:57,298 INFO L276 IsEmpty]: Start isEmpty. Operand has 81 states, 67 states have (on average 1.5970149253731343) internal successors, (107), 69 states have internal predecessors, (107), 8 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-11-16 10:54:57,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-16 10:54:57,307 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 10:54:57,307 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-16 10:54:57,308 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 10:54:57,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:54:57,313 INFO L85 PathProgramCache]: Analyzing trace with hash -1847035396, now seen corresponding path program 1 times [2022-11-16 10:54:57,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:54:57,323 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1284094882] [2022-11-16 10:54:57,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:54:57,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:54:57,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:54:57,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 10:54:57,505 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 10:54:57,505 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1284094882] [2022-11-16 10:54:57,506 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1284094882] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 10:54:57,507 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 10:54:57,507 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 10:54:57,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752899115] [2022-11-16 10:54:57,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 10:54:57,518 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-16 10:54:57,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 10:54:57,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-16 10:54:57,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-16 10:54:57,590 INFO L87 Difference]: Start difference. First operand has 81 states, 67 states have (on average 1.5970149253731343) internal successors, (107), 69 states have internal predecessors, (107), 8 states have call successors, (8), 3 states have call predecessors, (8), 3 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) [2022-11-16 10:54:57,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 10:54:57,664 INFO L93 Difference]: Finished difference Result 157 states and 246 transitions. [2022-11-16 10:54:57,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-16 10:54:57,667 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 [2022-11-16 10:54:57,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 10:54:57,686 INFO L225 Difference]: With dead ends: 157 [2022-11-16 10:54:57,686 INFO L226 Difference]: Without dead ends: 74 [2022-11-16 10:54:57,692 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-16 10:54:57,699 INFO L413 NwaCegarLoop]: 113 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, 113 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 [2022-11-16 10:54:57,701 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 10:54:57,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2022-11-16 10:54:57,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2022-11-16 10:54:57,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 61 states have (on average 1.4754098360655739) internal successors, (90), 63 states have internal predecessors, (90), 8 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-11-16 10:54:57,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 105 transitions. [2022-11-16 10:54:57,806 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 105 transitions. Word has length 7 [2022-11-16 10:54:57,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 10:54:57,807 INFO L495 AbstractCegarLoop]: Abstraction has 74 states and 105 transitions. [2022-11-16 10:54:57,807 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) [2022-11-16 10:54:57,808 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 105 transitions. [2022-11-16 10:54:57,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-16 10:54:57,809 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 10:54:57,809 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-16 10:54:57,810 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 10:54:57,810 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 10:54:57,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:54:57,837 INFO L85 PathProgramCache]: Analyzing trace with hash -1846975814, now seen corresponding path program 1 times [2022-11-16 10:54:57,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:54:57,839 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [618962245] [2022-11-16 10:54:57,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:54:57,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:54:57,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 10:54:57,885 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 10:54:57,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 10:54:57,948 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-16 10:54:57,948 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-16 10:54:57,950 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2022-11-16 10:54:57,953 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2022-11-16 10:54:57,954 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 10:54:57,958 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1] [2022-11-16 10:54:57,963 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-16 10:54:57,998 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.11 10:54:57 BoogieIcfgContainer [2022-11-16 10:54:57,999 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-16 10:54:58,001 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-16 10:54:58,001 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-16 10:54:58,002 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-16 10:54:58,002 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 10:54:57" (3/4) ... [2022-11-16 10:54:58,006 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-16 10:54:58,006 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-16 10:54:58,008 INFO L158 Benchmark]: Toolchain (without parser) took 2140.88ms. Allocated memory was 115.3MB in the beginning and 161.5MB in the end (delta: 46.1MB). Free memory was 74.8MB in the beginning and 133.6MB in the end (delta: -58.8MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 10:54:58,009 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 115.3MB. Free memory was 91.6MB in the beginning and 91.5MB in the end (delta: 73.7kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 10:54:58,012 INFO L158 Benchmark]: CACSL2BoogieTranslator took 431.39ms. Allocated memory is still 115.3MB. Free memory was 74.6MB in the beginning and 86.1MB in the end (delta: -11.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-16 10:54:58,014 INFO L158 Benchmark]: Boogie Procedure Inliner took 59.66ms. Allocated memory is still 115.3MB. Free memory was 86.1MB in the beginning and 84.2MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-16 10:54:58,017 INFO L158 Benchmark]: Boogie Preprocessor took 67.23ms. Allocated memory is still 115.3MB. Free memory was 84.2MB in the beginning and 82.6MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-16 10:54:58,018 INFO L158 Benchmark]: RCFGBuilder took 713.84ms. Allocated memory is still 115.3MB. Free memory was 82.6MB in the beginning and 63.7MB in the end (delta: 18.8MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2022-11-16 10:54:58,018 INFO L158 Benchmark]: TraceAbstraction took 847.97ms. Allocated memory was 115.3MB in the beginning and 161.5MB in the end (delta: 46.1MB). Free memory was 63.0MB in the beginning and 133.6MB in the end (delta: -70.6MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 10:54:58,019 INFO L158 Benchmark]: Witness Printer took 5.56ms. Allocated memory is still 161.5MB. Free memory is still 133.6MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 10:54:58,028 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30ms. Allocated memory is still 115.3MB. Free memory was 91.6MB in the beginning and 91.5MB in the end (delta: 73.7kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 431.39ms. Allocated memory is still 115.3MB. Free memory was 74.6MB in the beginning and 86.1MB in the end (delta: -11.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 59.66ms. Allocated memory is still 115.3MB. Free memory was 86.1MB in the beginning and 84.2MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 67.23ms. Allocated memory is still 115.3MB. Free memory was 84.2MB in the beginning and 82.6MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 713.84ms. Allocated memory is still 115.3MB. Free memory was 82.6MB in the beginning and 63.7MB in the end (delta: 18.8MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * TraceAbstraction took 847.97ms. Allocated memory was 115.3MB in the beginning and 161.5MB in the end (delta: 46.1MB). Free memory was 63.0MB in the beginning and 133.6MB in the end (delta: -70.6MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 5.56ms. Allocated memory is still 161.5MB. Free memory is still 133.6MB. 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: [L310] COND TRUE __VERIFIER_nondet_int() [L311] CALL main1() [L39] float IN = __VERIFIER_nondet_float(); [L40] CALL assume_abort_if_not(IN >= 0.0f && IN < 1.0f) [L34] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [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 < 1.39843f) 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 4 procedures, 81 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.7s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 113 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 0 IncrementalHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 113 mSDtfsCounter, 0 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=81occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 14 NumberOfCodeBlocks, 14 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 6 ConstructedInterpolants, 0 QuantifiedInterpolants, 6 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-11-16 10:54:58,063 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a09b4df8-ecbb-46a1-8e36-97ff5e7602a1/bin/uautomizer-tPACEb0tL8/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_a09b4df8-ecbb-46a1-8e36-97ff5e7602a1/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a09b4df8-ecbb-46a1-8e36-97ff5e7602a1/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a09b4df8-ecbb-46a1-8e36-97ff5e7602a1/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a09b4df8-ecbb-46a1-8e36-97ff5e7602a1/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/square_3+soft_float_4-2a.c.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a09b4df8-ecbb-46a1-8e36-97ff5e7602a1/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a09b4df8-ecbb-46a1-8e36-97ff5e7602a1/bin/uautomizer-tPACEb0tL8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 4ba0922fbaee541ed4ded1889d0ea25cfcdd1e879f7757f1ef1aa76d5475dafa --- 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-e04fb08 [2022-11-16 10:55:00,547 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 10:55:00,549 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 10:55:00,581 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 10:55:00,590 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 10:55:00,591 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 10:55:00,593 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 10:55:00,595 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 10:55:00,596 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 10:55:00,598 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 10:55:00,599 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 10:55:00,600 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 10:55:00,600 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 10:55:00,602 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 10:55:00,603 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 10:55:00,604 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 10:55:00,605 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 10:55:00,606 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 10:55:00,608 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 10:55:00,610 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 10:55:00,612 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 10:55:00,615 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 10:55:00,616 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 10:55:00,617 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 10:55:00,621 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 10:55:00,621 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 10:55:00,622 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 10:55:00,623 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 10:55:00,623 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 10:55:00,625 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 10:55:00,625 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 10:55:00,636 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 10:55:00,637 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 10:55:00,638 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 10:55:00,639 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 10:55:00,640 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 10:55:00,640 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 10:55:00,641 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 10:55:00,641 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 10:55:00,642 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 10:55:00,643 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 10:55:00,644 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a09b4df8-ecbb-46a1-8e36-97ff5e7602a1/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2022-11-16 10:55:00,689 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 10:55:00,694 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 10:55:00,696 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 10:55:00,696 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 10:55:00,697 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 10:55:00,698 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 10:55:00,698 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 10:55:00,701 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 10:55:00,702 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 10:55:00,703 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 10:55:00,704 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 10:55:00,704 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 10:55:00,704 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 10:55:00,705 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 10:55:00,705 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 10:55:00,705 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 10:55:00,705 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-16 10:55:00,706 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-16 10:55:00,706 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-16 10:55:00,706 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 10:55:00,706 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 10:55:00,707 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 10:55:00,707 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 10:55:00,707 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 10:55:00,707 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 10:55:00,708 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 10:55:00,708 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 10:55:00,708 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 10:55:00,708 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 10:55:00,709 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 10:55:00,709 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-11-16 10:55:00,709 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-16 10:55:00,709 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 10:55:00,710 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 10:55:00,710 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 10:55:00,710 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-16 10:55:00,710 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_a09b4df8-ecbb-46a1-8e36-97ff5e7602a1/bin/uautomizer-tPACEb0tL8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a09b4df8-ecbb-46a1-8e36-97ff5e7602a1/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4ba0922fbaee541ed4ded1889d0ea25cfcdd1e879f7757f1ef1aa76d5475dafa [2022-11-16 10:55:01,206 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 10:55:01,234 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 10:55:01,237 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 10:55:01,238 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 10:55:01,239 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 10:55:01,241 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a09b4df8-ecbb-46a1-8e36-97ff5e7602a1/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/combinations/square_3+soft_float_4-2a.c.cil.c [2022-11-16 10:55:01,327 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a09b4df8-ecbb-46a1-8e36-97ff5e7602a1/bin/uautomizer-tPACEb0tL8/data/598e8f3fe/99f7d03c7ba948388ae4078240a55c82/FLAGea7191a6d [2022-11-16 10:55:02,015 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 10:55:02,015 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a09b4df8-ecbb-46a1-8e36-97ff5e7602a1/sv-benchmarks/c/combinations/square_3+soft_float_4-2a.c.cil.c [2022-11-16 10:55:02,029 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a09b4df8-ecbb-46a1-8e36-97ff5e7602a1/bin/uautomizer-tPACEb0tL8/data/598e8f3fe/99f7d03c7ba948388ae4078240a55c82/FLAGea7191a6d [2022-11-16 10:55:02,308 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a09b4df8-ecbb-46a1-8e36-97ff5e7602a1/bin/uautomizer-tPACEb0tL8/data/598e8f3fe/99f7d03c7ba948388ae4078240a55c82 [2022-11-16 10:55:02,311 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 10:55:02,312 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 10:55:02,314 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 10:55:02,314 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 10:55:02,318 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 10:55:02,319 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 10:55:02" (1/1) ... [2022-11-16 10:55:02,320 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a862af3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:55:02, skipping insertion in model container [2022-11-16 10:55:02,320 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 10:55:02" (1/1) ... [2022-11-16 10:55:02,329 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 10:55:02,360 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 10:55:02,539 WARN L229 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_a09b4df8-ecbb-46a1-8e36-97ff5e7602a1/sv-benchmarks/c/combinations/square_3+soft_float_4-2a.c.cil.c[1999,2012] [2022-11-16 10:55:02,545 WARN L229 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_a09b4df8-ecbb-46a1-8e36-97ff5e7602a1/sv-benchmarks/c/combinations/square_3+soft_float_4-2a.c.cil.c[2393,2406] [2022-11-16 10:55:02,634 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 10:55:02,647 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 10:55:02,664 WARN L229 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_a09b4df8-ecbb-46a1-8e36-97ff5e7602a1/sv-benchmarks/c/combinations/square_3+soft_float_4-2a.c.cil.c[1999,2012] [2022-11-16 10:55:02,666 WARN L229 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_a09b4df8-ecbb-46a1-8e36-97ff5e7602a1/sv-benchmarks/c/combinations/square_3+soft_float_4-2a.c.cil.c[2393,2406] [2022-11-16 10:55:02,695 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 10:55:02,711 INFO L208 MainTranslator]: Completed translation [2022-11-16 10:55:02,712 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:55:02 WrapperNode [2022-11-16 10:55:02,712 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 10:55:02,713 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 10:55:02,713 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 10:55:02,714 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 10:55:02,721 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:55:02" (1/1) ... [2022-11-16 10:55:02,733 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:55:02" (1/1) ... [2022-11-16 10:55:02,756 INFO L138 Inliner]: procedures = 28, calls = 19, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 70 [2022-11-16 10:55:02,756 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 10:55:02,757 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 10:55:02,757 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 10:55:02,757 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 10:55:02,768 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:55:02" (1/1) ... [2022-11-16 10:55:02,768 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:55:02" (1/1) ... [2022-11-16 10:55:02,772 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:55:02" (1/1) ... [2022-11-16 10:55:02,773 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:55:02" (1/1) ... [2022-11-16 10:55:02,783 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:55:02" (1/1) ... [2022-11-16 10:55:02,787 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:55:02" (1/1) ... [2022-11-16 10:55:02,789 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:55:02" (1/1) ... [2022-11-16 10:55:02,791 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:55:02" (1/1) ... [2022-11-16 10:55:02,795 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 10:55:02,796 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 10:55:02,796 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 10:55:02,796 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 10:55:02,797 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:55:02" (1/1) ... [2022-11-16 10:55:02,803 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 10:55:02,824 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a09b4df8-ecbb-46a1-8e36-97ff5e7602a1/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 10:55:02,837 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a09b4df8-ecbb-46a1-8e36-97ff5e7602a1/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 10:55:02,862 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a09b4df8-ecbb-46a1-8e36-97ff5e7602a1/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 10:55:02,883 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 10:55:02,883 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-16 10:55:02,883 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2022-11-16 10:55:02,884 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2022-11-16 10:55:02,884 INFO L130 BoogieDeclarations]: Found specification of procedure addflt [2022-11-16 10:55:02,884 INFO L138 BoogieDeclarations]: Found implementation of procedure addflt [2022-11-16 10:55:02,884 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 10:55:02,884 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 10:55:02,885 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-16 10:55:02,885 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-16 10:55:02,978 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 10:55:02,980 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 10:55:05,608 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 10:55:05,617 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 10:55:05,617 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-16 10:55:05,620 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 10:55:05 BoogieIcfgContainer [2022-11-16 10:55:05,620 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 10:55:05,622 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 10:55:05,623 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 10:55:05,627 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 10:55:05,627 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 10:55:02" (1/3) ... [2022-11-16 10:55:05,628 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f1546e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 10:55:05, skipping insertion in model container [2022-11-16 10:55:05,628 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:55:02" (2/3) ... [2022-11-16 10:55:05,629 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f1546e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 10:55:05, skipping insertion in model container [2022-11-16 10:55:05,629 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 10:55:05" (3/3) ... [2022-11-16 10:55:05,631 INFO L112 eAbstractionObserver]: Analyzing ICFG square_3+soft_float_4-2a.c.cil.c [2022-11-16 10:55:05,652 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 10:55:05,653 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-16 10:55:05,709 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 10:55:05,716 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=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@3a84e116, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 10:55:05,716 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-16 10:55:05,721 INFO L276 IsEmpty]: Start isEmpty. Operand has 63 states, 49 states have (on average 1.489795918367347) internal successors, (73), 51 states have internal predecessors, (73), 8 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-11-16 10:55:05,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-16 10:55:05,729 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 10:55:05,730 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-16 10:55:05,731 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 10:55:05,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:55:05,737 INFO L85 PathProgramCache]: Analyzing trace with hash -548115930, now seen corresponding path program 1 times [2022-11-16 10:55:05,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 10:55:05,752 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [183685086] [2022-11-16 10:55:05,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:55:05,753 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 [2022-11-16 10:55:05,753 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a09b4df8-ecbb-46a1-8e36-97ff5e7602a1/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 10:55:05,759 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a09b4df8-ecbb-46a1-8e36-97ff5e7602a1/bin/uautomizer-tPACEb0tL8/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) [2022-11-16 10:55:05,766 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a09b4df8-ecbb-46a1-8e36-97ff5e7602a1/bin/uautomizer-tPACEb0tL8/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 [2022-11-16 10:55:06,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:55:06,419 INFO L263 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 1 conjunts are in the unsatisfiable core [2022-11-16 10:55:06,423 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 10:55:06,442 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 10:55:06,442 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 10:55:06,443 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 10:55:06,443 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [183685086] [2022-11-16 10:55:06,444 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [183685086] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 10:55:06,444 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 10:55:06,444 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 10:55:06,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894916405] [2022-11-16 10:55:06,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 10:55:06,451 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-16 10:55:06,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 10:55:06,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-16 10:55:06,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-16 10:55:06,493 INFO L87 Difference]: Start difference. First operand has 63 states, 49 states have (on average 1.489795918367347) internal successors, (73), 51 states have internal predecessors, (73), 8 states have call successors, (8), 3 states have call predecessors, (8), 3 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) [2022-11-16 10:55:06,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 10:55:06,533 INFO L93 Difference]: Finished difference Result 121 states and 178 transitions. [2022-11-16 10:55:06,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-16 10:55:06,536 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 [2022-11-16 10:55:06,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 10:55:06,545 INFO L225 Difference]: With dead ends: 121 [2022-11-16 10:55:06,546 INFO L226 Difference]: Without dead ends: 56 [2022-11-16 10:55:06,550 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 [2022-11-16 10:55:06,554 INFO L413 NwaCegarLoop]: 81 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, 81 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 [2022-11-16 10:55:06,556 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 10:55:06,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2022-11-16 10:55:06,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2022-11-16 10:55:06,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 43 states have (on average 1.3488372093023255) internal successors, (58), 45 states have internal predecessors, (58), 8 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-11-16 10:55:06,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 73 transitions. [2022-11-16 10:55:06,645 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 73 transitions. Word has length 7 [2022-11-16 10:55:06,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 10:55:06,646 INFO L495 AbstractCegarLoop]: Abstraction has 56 states and 73 transitions. [2022-11-16 10:55:06,646 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) [2022-11-16 10:55:06,647 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 73 transitions. [2022-11-16 10:55:06,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-16 10:55:06,647 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 10:55:06,648 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-16 10:55:06,679 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a09b4df8-ecbb-46a1-8e36-97ff5e7602a1/bin/uautomizer-tPACEb0tL8/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 [2022-11-16 10:55:06,866 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a09b4df8-ecbb-46a1-8e36-97ff5e7602a1/bin/uautomizer-tPACEb0tL8/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 [2022-11-16 10:55:06,867 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 10:55:06,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:55:06,868 INFO L85 PathProgramCache]: Analyzing trace with hash -548056348, now seen corresponding path program 1 times [2022-11-16 10:55:06,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 10:55:06,869 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [603320028] [2022-11-16 10:55:06,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:55:06,869 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 [2022-11-16 10:55:06,870 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a09b4df8-ecbb-46a1-8e36-97ff5e7602a1/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 10:55:06,873 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a09b4df8-ecbb-46a1-8e36-97ff5e7602a1/bin/uautomizer-tPACEb0tL8/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) [2022-11-16 10:55:06,886 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a09b4df8-ecbb-46a1-8e36-97ff5e7602a1/bin/uautomizer-tPACEb0tL8/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 [2022-11-16 10:56:20,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 10:56:20,570 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 10:59:25,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 10:59:25,591 INFO L130 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2022-11-16 10:59:25,591 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-16 10:59:25,593 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2022-11-16 10:59:25,596 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2022-11-16 10:59:25,646 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a09b4df8-ecbb-46a1-8e36-97ff5e7602a1/bin/uautomizer-tPACEb0tL8/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)] Forceful destruction successful, exit code 0 [2022-11-16 10:59:25,797 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a09b4df8-ecbb-46a1-8e36-97ff5e7602a1/bin/uautomizer-tPACEb0tL8/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 [2022-11-16 10:59:25,801 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1] [2022-11-16 10:59:25,804 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-16 10:59:25,834 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.11 10:59:25 BoogieIcfgContainer [2022-11-16 10:59:25,834 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-16 10:59:25,835 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-16 10:59:25,835 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-16 10:59:25,835 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-16 10:59:25,836 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 10:55:05" (3/4) ... [2022-11-16 10:59:25,838 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-11-16 10:59:25,897 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a09b4df8-ecbb-46a1-8e36-97ff5e7602a1/bin/uautomizer-tPACEb0tL8/witness.graphml [2022-11-16 10:59:25,897 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-16 10:59:25,898 INFO L158 Benchmark]: Toolchain (without parser) took 263585.33ms. Allocated memory was 69.2MB in the beginning and 83.9MB in the end (delta: 14.7MB). Free memory was 50.6MB in the beginning and 55.6MB in the end (delta: -5.0MB). Peak memory consumption was 10.0MB. Max. memory is 16.1GB. [2022-11-16 10:59:25,898 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 69.2MB. Free memory is still 50.6MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 10:59:25,899 INFO L158 Benchmark]: CACSL2BoogieTranslator took 398.86ms. Allocated memory is still 69.2MB. Free memory was 50.4MB in the beginning and 49.0MB in the end (delta: 1.4MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-11-16 10:59:25,900 INFO L158 Benchmark]: Boogie Procedure Inliner took 43.32ms. Allocated memory is still 69.2MB. Free memory was 48.8MB in the beginning and 47.1MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-16 10:59:25,900 INFO L158 Benchmark]: Boogie Preprocessor took 37.78ms. Allocated memory is still 69.2MB. Free memory was 47.1MB in the beginning and 45.3MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-16 10:59:25,901 INFO L158 Benchmark]: RCFGBuilder took 2824.57ms. Allocated memory is still 69.2MB. Free memory was 45.3MB in the beginning and 48.6MB in the end (delta: -3.3MB). Peak memory consumption was 16.6MB. Max. memory is 16.1GB. [2022-11-16 10:59:25,901 INFO L158 Benchmark]: TraceAbstraction took 260211.50ms. Allocated memory was 69.2MB in the beginning and 83.9MB in the end (delta: 14.7MB). Free memory was 48.1MB in the beginning and 57.1MB in the end (delta: -9.0MB). Peak memory consumption was 7.2MB. Max. memory is 16.1GB. [2022-11-16 10:59:25,902 INFO L158 Benchmark]: Witness Printer took 62.33ms. Allocated memory is still 83.9MB. Free memory was 57.1MB in the beginning and 55.6MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 10:59:25,916 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 69.2MB. Free memory is still 50.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 398.86ms. Allocated memory is still 69.2MB. Free memory was 50.4MB in the beginning and 49.0MB in the end (delta: 1.4MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 43.32ms. Allocated memory is still 69.2MB. Free memory was 48.8MB in the beginning and 47.1MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 37.78ms. Allocated memory is still 69.2MB. Free memory was 47.1MB in the beginning and 45.3MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 2824.57ms. Allocated memory is still 69.2MB. Free memory was 45.3MB in the beginning and 48.6MB in the end (delta: -3.3MB). Peak memory consumption was 16.6MB. Max. memory is 16.1GB. * TraceAbstraction took 260211.50ms. Allocated memory was 69.2MB in the beginning and 83.9MB in the end (delta: 14.7MB). Free memory was 48.1MB in the beginning and 57.1MB in the end (delta: -9.0MB). Peak memory consumption was 7.2MB. Max. memory is 16.1GB. * Witness Printer took 62.33ms. Allocated memory is still 83.9MB. Free memory was 57.1MB in the beginning and 55.6MB in the end (delta: 1.5MB). 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 - CounterExampleResult [Line: 48]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L310] COND TRUE __VERIFIER_nondet_int() [L311] CALL main1() [L39] float IN = __VERIFIER_nondet_float(); [L40] CALL assume_abort_if_not(IN >= 0.0f && IN < 1.0f) [L34] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [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=0.9999997615814209, result=1.3984375, x=0.9999997615814209] [L47] COND TRUE !(result >= 0.0f && result < 1.39843f) VAL [IN=0.9999997615814209, result=1.3984375, x=0.9999997615814209] [L48] reach_error() VAL [IN=0.9999997615814209, result=1.3984375, x=0.9999997615814209] - 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 4 procedures, 63 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 260.1s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 81 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 0 IncrementalHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 81 mSDtfsCounter, 0 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 6 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=63occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 74.2s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 14 NumberOfCodeBlocks, 14 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 6 ConstructedInterpolants, 0 QuantifiedInterpolants, 6 SizeOfPredicates, 0 NumberOfNonLiveVariables, 22 ConjunctsInSsa, 1 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2022-11-16 10:59:25,991 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a09b4df8-ecbb-46a1-8e36-97ff5e7602a1/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE