./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/square_6+soft_float_4-3a.c.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7e70badd Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f01c6a20-b034-4aa1-b1a0-c5bfb214b897/bin/uautomizer-wIGwrQj20G/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f01c6a20-b034-4aa1-b1a0-c5bfb214b897/bin/uautomizer-wIGwrQj20G/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f01c6a20-b034-4aa1-b1a0-c5bfb214b897/bin/uautomizer-wIGwrQj20G/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f01c6a20-b034-4aa1-b1a0-c5bfb214b897/bin/uautomizer-wIGwrQj20G/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/square_6+soft_float_4-3a.c.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f01c6a20-b034-4aa1-b1a0-c5bfb214b897/bin/uautomizer-wIGwrQj20G/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f01c6a20-b034-4aa1-b1a0-c5bfb214b897/bin/uautomizer-wIGwrQj20G --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 7f9af890a0b98df8fb43a2c8ebf2715c4a4b8a7c4e81db20c6dd9c8d356ba701 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-7e70bad [2021-11-23 12:42:03,363 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 12:42:03,366 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 12:42:03,431 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 12:42:03,432 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 12:42:03,436 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 12:42:03,439 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 12:42:03,443 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 12:42:03,446 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 12:42:03,453 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 12:42:03,455 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 12:42:03,457 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 12:42:03,458 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 12:42:03,461 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 12:42:03,464 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 12:42:03,470 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 12:42:03,472 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 12:42:03,473 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 12:42:03,483 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 12:42:03,485 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 12:42:03,488 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 12:42:03,492 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 12:42:03,496 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 12:42:03,498 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 12:42:03,509 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 12:42:03,511 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 12:42:03,511 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 12:42:03,514 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 12:42:03,514 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 12:42:03,516 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 12:42:03,517 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 12:42:03,518 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 12:42:03,521 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 12:42:03,523 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 12:42:03,525 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 12:42:03,525 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 12:42:03,526 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 12:42:03,527 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 12:42:03,527 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 12:42:03,528 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 12:42:03,530 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 12:42:03,531 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f01c6a20-b034-4aa1-b1a0-c5bfb214b897/bin/uautomizer-wIGwrQj20G/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-23 12:42:03,584 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 12:42:03,584 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 12:42:03,585 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 12:42:03,593 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 12:42:03,595 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-23 12:42:03,596 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-23 12:42:03,596 INFO L138 SettingsManager]: * Use SBE=true [2021-11-23 12:42:03,597 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 12:42:03,597 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 12:42:03,597 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 12:42:03,599 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 12:42:03,599 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 12:42:03,600 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 12:42:03,600 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 12:42:03,600 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 12:42:03,600 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 12:42:03,601 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 12:42:03,601 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 12:42:03,601 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 12:42:03,602 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 12:42:03,602 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-23 12:42:03,602 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 12:42:03,602 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 12:42:03,603 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 12:42:03,603 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 12:42:03,603 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 12:42:03,604 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-23 12:42:03,604 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 12:42:03,604 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-23 12:42:03,606 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-23 12:42:03,606 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 12:42:03,607 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 12:42:03,607 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_f01c6a20-b034-4aa1-b1a0-c5bfb214b897/bin/uautomizer-wIGwrQj20G/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f01c6a20-b034-4aa1-b1a0-c5bfb214b897/bin/uautomizer-wIGwrQj20G Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7f9af890a0b98df8fb43a2c8ebf2715c4a4b8a7c4e81db20c6dd9c8d356ba701 [2021-11-23 12:42:03,934 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 12:42:03,963 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 12:42:03,966 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 12:42:03,968 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 12:42:03,969 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 12:42:03,971 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f01c6a20-b034-4aa1-b1a0-c5bfb214b897/bin/uautomizer-wIGwrQj20G/../../sv-benchmarks/c/combinations/square_6+soft_float_4-3a.c.cil.c [2021-11-23 12:42:04,039 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f01c6a20-b034-4aa1-b1a0-c5bfb214b897/bin/uautomizer-wIGwrQj20G/data/e6fb9ec5d/ff05dcb1f9064253b5b30b2e05349d7a/FLAGb5101d728 [2021-11-23 12:42:04,600 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 12:42:04,601 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f01c6a20-b034-4aa1-b1a0-c5bfb214b897/sv-benchmarks/c/combinations/square_6+soft_float_4-3a.c.cil.c [2021-11-23 12:42:04,621 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f01c6a20-b034-4aa1-b1a0-c5bfb214b897/bin/uautomizer-wIGwrQj20G/data/e6fb9ec5d/ff05dcb1f9064253b5b30b2e05349d7a/FLAGb5101d728 [2021-11-23 12:42:04,933 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f01c6a20-b034-4aa1-b1a0-c5bfb214b897/bin/uautomizer-wIGwrQj20G/data/e6fb9ec5d/ff05dcb1f9064253b5b30b2e05349d7a [2021-11-23 12:42:04,935 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 12:42:04,937 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 12:42:04,960 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 12:42:04,961 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 12:42:04,965 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 12:42:04,966 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 12:42:04" (1/1) ... [2021-11-23 12:42:04,967 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63339b4c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:42:04, skipping insertion in model container [2021-11-23 12:42:04,970 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 12:42:04" (1/1) ... [2021-11-23 12:42:04,978 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 12:42:05,038 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 12:42:05,228 WARN L230 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_f01c6a20-b034-4aa1-b1a0-c5bfb214b897/sv-benchmarks/c/combinations/square_6+soft_float_4-3a.c.cil.c[1997,2010] [2021-11-23 12:42:05,232 WARN L230 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_f01c6a20-b034-4aa1-b1a0-c5bfb214b897/sv-benchmarks/c/combinations/square_6+soft_float_4-3a.c.cil.c[2366,2379] [2021-11-23 12:42:05,271 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 12:42:05,279 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 12:42:05,292 WARN L230 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_f01c6a20-b034-4aa1-b1a0-c5bfb214b897/sv-benchmarks/c/combinations/square_6+soft_float_4-3a.c.cil.c[1997,2010] [2021-11-23 12:42:05,294 WARN L230 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_f01c6a20-b034-4aa1-b1a0-c5bfb214b897/sv-benchmarks/c/combinations/square_6+soft_float_4-3a.c.cil.c[2366,2379] [2021-11-23 12:42:05,322 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 12:42:05,336 INFO L208 MainTranslator]: Completed translation [2021-11-23 12:42:05,337 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:42:05 WrapperNode [2021-11-23 12:42:05,337 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 12:42:05,339 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 12:42:05,339 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 12:42:05,339 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 12:42:05,347 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:42:05" (1/1) ... [2021-11-23 12:42:05,357 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:42:05" (1/1) ... [2021-11-23 12:42:05,395 INFO L137 Inliner]: procedures = 27, calls = 20, calls flagged for inlining = 16, calls inlined = 17, statements flattened = 324 [2021-11-23 12:42:05,395 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 12:42:05,396 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 12:42:05,396 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 12:42:05,397 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 12:42:05,405 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:42:05" (1/1) ... [2021-11-23 12:42:05,406 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:42:05" (1/1) ... [2021-11-23 12:42:05,411 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:42:05" (1/1) ... [2021-11-23 12:42:05,411 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:42:05" (1/1) ... [2021-11-23 12:42:05,421 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:42:05" (1/1) ... [2021-11-23 12:42:05,441 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:42:05" (1/1) ... [2021-11-23 12:42:05,448 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:42:05" (1/1) ... [2021-11-23 12:42:05,453 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 12:42:05,454 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 12:42:05,454 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 12:42:05,454 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 12:42:05,471 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:42:05" (1/1) ... [2021-11-23 12:42:05,479 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 12:42:05,490 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f01c6a20-b034-4aa1-b1a0-c5bfb214b897/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 12:42:05,502 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f01c6a20-b034-4aa1-b1a0-c5bfb214b897/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 12:42:05,521 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f01c6a20-b034-4aa1-b1a0-c5bfb214b897/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 12:42:05,554 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 12:42:05,555 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 12:42:05,555 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 12:42:05,555 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 12:42:05,675 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 12:42:05,677 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 12:42:06,182 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 12:42:06,192 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 12:42:06,192 INFO L301 CfgBuilder]: Removed 6 assume(true) statements. [2021-11-23 12:42:06,195 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 12:42:06 BoogieIcfgContainer [2021-11-23 12:42:06,195 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 12:42:06,198 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 12:42:06,198 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 12:42:06,202 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 12:42:06,203 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 12:42:04" (1/3) ... [2021-11-23 12:42:06,204 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@154534f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 12:42:06, skipping insertion in model container [2021-11-23 12:42:06,204 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:42:05" (2/3) ... [2021-11-23 12:42:06,204 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@154534f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 12:42:06, skipping insertion in model container [2021-11-23 12:42:06,204 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 12:42:06" (3/3) ... [2021-11-23 12:42:06,206 INFO L111 eAbstractionObserver]: Analyzing ICFG square_6+soft_float_4-3a.c.cil.c [2021-11-23 12:42:06,213 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 12:42:06,213 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2021-11-23 12:42:06,271 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 12:42:06,279 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, 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, mLoopAccelerationTechnique=FAST_UPR [2021-11-23 12:42:06,279 INFO L340 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2021-11-23 12:42:06,305 INFO L276 IsEmpty]: Start isEmpty. Operand has 95 states, 86 states have (on average 1.697674418604651) internal successors, (146), 94 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:42:06,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-23 12:42:06,313 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:42:06,314 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:42:06,315 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-23 12:42:06,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:42:06,324 INFO L85 PathProgramCache]: Analyzing trace with hash 1804936583, now seen corresponding path program 1 times [2021-11-23 12:42:06,333 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:42:06,334 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146170489] [2021-11-23 12:42:06,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:42:06,335 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:42:06,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:42:06,520 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:42:06,521 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:42:06,521 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2146170489] [2021-11-23 12:42:06,522 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2146170489] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:42:06,523 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:42:06,523 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 12:42:06,525 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271030840] [2021-11-23 12:42:06,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:42:06,532 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-23 12:42:06,532 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:42:06,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-23 12:42:06,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-23 12:42:06,587 INFO L87 Difference]: Start difference. First operand has 95 states, 86 states have (on average 1.697674418604651) internal successors, (146), 94 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 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) [2021-11-23 12:42:06,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:42:06,624 INFO L93 Difference]: Finished difference Result 178 states and 268 transitions. [2021-11-23 12:42:06,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-23 12:42:06,627 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 [2021-11-23 12:42:06,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:42:06,641 INFO L225 Difference]: With dead ends: 178 [2021-11-23 12:42:06,641 INFO L226 Difference]: Without dead ends: 88 [2021-11-23 12:42:06,646 INFO L932 BasicCegarLoop]: 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 [2021-11-23 12:42:06,651 INFO L933 BasicCegarLoop]: 125 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, 125 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 [2021-11-23 12:42:06,652 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 12:42:06,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2021-11-23 12:42:06,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2021-11-23 12:42:06,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 80 states have (on average 1.4625) internal successors, (117), 87 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:42:06,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 117 transitions. [2021-11-23 12:42:06,708 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 117 transitions. Word has length 7 [2021-11-23 12:42:06,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:42:06,709 INFO L470 AbstractCegarLoop]: Abstraction has 88 states and 117 transitions. [2021-11-23 12:42:06,709 INFO L471 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) [2021-11-23 12:42:06,710 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 117 transitions. [2021-11-23 12:42:06,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-23 12:42:06,711 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:42:06,711 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:42:06,712 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-23 12:42:06,712 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-23 12:42:06,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:42:06,713 INFO L85 PathProgramCache]: Analyzing trace with hash 1804996165, now seen corresponding path program 1 times [2021-11-23 12:42:06,714 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:42:06,714 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366751723] [2021-11-23 12:42:06,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:42:06,715 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:42:06,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 12:42:06,732 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-23 12:42:06,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 12:42:06,767 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-23 12:42:06,768 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-23 12:42:06,770 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (7 of 8 remaining) [2021-11-23 12:42:06,773 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (6 of 8 remaining) [2021-11-23 12:42:06,774 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (5 of 8 remaining) [2021-11-23 12:42:06,774 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION (4 of 8 remaining) [2021-11-23 12:42:06,775 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (3 of 8 remaining) [2021-11-23 12:42:06,775 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION (2 of 8 remaining) [2021-11-23 12:42:06,776 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION (1 of 8 remaining) [2021-11-23 12:42:06,776 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION (0 of 8 remaining) [2021-11-23 12:42:06,777 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-23 12:42:06,782 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2021-11-23 12:42:06,786 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-23 12:42:06,812 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 12:42:06 BoogieIcfgContainer [2021-11-23 12:42:06,812 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-23 12:42:06,813 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-23 12:42:06,813 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-23 12:42:06,814 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-23 12:42:06,814 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 12:42:06" (3/4) ... [2021-11-23 12:42:06,819 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-23 12:42:06,819 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-23 12:42:06,820 INFO L158 Benchmark]: Toolchain (without parser) took 1882.85ms. Allocated memory was 90.2MB in the beginning and 109.1MB in the end (delta: 18.9MB). Free memory was 47.5MB in the beginning and 73.2MB in the end (delta: -25.7MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 12:42:06,821 INFO L158 Benchmark]: CDTParser took 0.36ms. Allocated memory is still 90.2MB. Free memory was 64.5MB in the beginning and 64.5MB in the end (delta: 41.6kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 12:42:06,822 INFO L158 Benchmark]: CACSL2BoogieTranslator took 377.32ms. Allocated memory is still 90.2MB. Free memory was 68.1MB in the beginning and 61.2MB in the end (delta: 6.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-23 12:42:06,823 INFO L158 Benchmark]: Boogie Procedure Inliner took 56.94ms. Allocated memory is still 90.2MB. Free memory was 61.2MB in the beginning and 58.7MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 12:42:06,824 INFO L158 Benchmark]: Boogie Preprocessor took 56.80ms. Allocated memory is still 90.2MB. Free memory was 58.4MB in the beginning and 56.8MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 12:42:06,825 INFO L158 Benchmark]: RCFGBuilder took 741.89ms. Allocated memory is still 90.2MB. Free memory was 56.8MB in the beginning and 39.8MB in the end (delta: 17.0MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2021-11-23 12:42:06,826 INFO L158 Benchmark]: TraceAbstraction took 614.55ms. Allocated memory was 90.2MB in the beginning and 109.1MB in the end (delta: 18.9MB). Free memory was 39.3MB in the beginning and 73.9MB in the end (delta: -34.5MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 12:42:06,826 INFO L158 Benchmark]: Witness Printer took 6.06ms. Allocated memory is still 109.1MB. Free memory was 73.9MB in the beginning and 73.2MB in the end (delta: 633.2kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 12:42:06,831 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36ms. Allocated memory is still 90.2MB. Free memory was 64.5MB in the beginning and 64.5MB in the end (delta: 41.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 377.32ms. Allocated memory is still 90.2MB. Free memory was 68.1MB in the beginning and 61.2MB in the end (delta: 6.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 56.94ms. Allocated memory is still 90.2MB. Free memory was 61.2MB in the beginning and 58.7MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 56.80ms. Allocated memory is still 90.2MB. Free memory was 58.4MB in the beginning and 56.8MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 741.89ms. Allocated memory is still 90.2MB. Free memory was 56.8MB in the beginning and 39.8MB in the end (delta: 17.0MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 614.55ms. Allocated memory was 90.2MB in the beginning and 109.1MB in the end (delta: 18.9MB). Free memory was 39.3MB in the beginning and 73.9MB in the end (delta: -34.5MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 6.06ms. Allocated memory is still 109.1MB. Free memory was 73.9MB in the beginning and 73.2MB in the end (delta: 633.2kB). 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: [L309] COND TRUE __VERIFIER_nondet_int() [L310] 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=49, x=49] [L47] COND TRUE !(result >= 0.0f && result < 1.399f) VAL [IN=49, x=49] [L48] reach_error() VAL [IN=49, x=49] - UnprovableResult [Line: 60]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 60]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 60]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 60]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 60]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 60]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 60]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 95 locations, 8 error locations. Started 1 CEGAR loops. OverallTime: 0.5s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 125 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, 125 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=95occurred 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: 0.0s 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 [2021-11-23 12:42:06,891 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f01c6a20-b034-4aa1-b1a0-c5bfb214b897/bin/uautomizer-wIGwrQj20G/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/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f01c6a20-b034-4aa1-b1a0-c5bfb214b897/bin/uautomizer-wIGwrQj20G/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f01c6a20-b034-4aa1-b1a0-c5bfb214b897/bin/uautomizer-wIGwrQj20G/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f01c6a20-b034-4aa1-b1a0-c5bfb214b897/bin/uautomizer-wIGwrQj20G/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f01c6a20-b034-4aa1-b1a0-c5bfb214b897/bin/uautomizer-wIGwrQj20G/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/square_6+soft_float_4-3a.c.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f01c6a20-b034-4aa1-b1a0-c5bfb214b897/bin/uautomizer-wIGwrQj20G/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f01c6a20-b034-4aa1-b1a0-c5bfb214b897/bin/uautomizer-wIGwrQj20G --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 7f9af890a0b98df8fb43a2c8ebf2715c4a4b8a7c4e81db20c6dd9c8d356ba701 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-7e70bad [2021-11-23 12:42:09,703 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 12:42:09,707 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 12:42:09,773 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 12:42:09,774 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 12:42:09,779 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 12:42:09,781 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 12:42:09,789 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 12:42:09,793 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 12:42:09,800 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 12:42:09,802 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 12:42:09,805 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 12:42:09,806 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 12:42:09,809 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 12:42:09,812 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 12:42:09,817 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 12:42:09,819 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 12:42:09,821 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 12:42:09,824 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 12:42:09,834 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 12:42:09,836 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 12:42:09,838 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 12:42:09,842 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 12:42:09,844 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 12:42:09,849 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 12:42:09,850 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 12:42:09,850 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 12:42:09,851 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 12:42:09,852 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 12:42:09,853 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 12:42:09,854 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 12:42:09,855 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 12:42:09,856 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 12:42:09,857 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 12:42:09,858 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 12:42:09,859 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 12:42:09,871 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 12:42:09,871 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 12:42:09,872 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 12:42:09,874 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 12:42:09,875 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 12:42:09,878 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f01c6a20-b034-4aa1-b1a0-c5bfb214b897/bin/uautomizer-wIGwrQj20G/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-11-23 12:42:09,935 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 12:42:09,935 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 12:42:09,936 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 12:42:09,936 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 12:42:09,939 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-23 12:42:09,939 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-23 12:42:09,940 INFO L138 SettingsManager]: * Use SBE=true [2021-11-23 12:42:09,940 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 12:42:09,940 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 12:42:09,940 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 12:42:09,942 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 12:42:09,942 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 12:42:09,942 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 12:42:09,943 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 12:42:09,943 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-23 12:42:09,944 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-23 12:42:09,944 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-23 12:42:09,944 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 12:42:09,944 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 12:42:09,945 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 12:42:09,945 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 12:42:09,945 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 12:42:09,945 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-23 12:42:09,946 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 12:42:09,946 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 12:42:09,946 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 12:42:09,947 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 12:42:09,947 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 12:42:09,948 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-11-23 12:42:09,948 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-23 12:42:09,948 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-23 12:42:09,948 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-23 12:42:09,949 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 12:42:09,949 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 12:42:09,949 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 12:42:09,950 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_f01c6a20-b034-4aa1-b1a0-c5bfb214b897/bin/uautomizer-wIGwrQj20G/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f01c6a20-b034-4aa1-b1a0-c5bfb214b897/bin/uautomizer-wIGwrQj20G Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7f9af890a0b98df8fb43a2c8ebf2715c4a4b8a7c4e81db20c6dd9c8d356ba701 [2021-11-23 12:42:10,466 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 12:42:10,491 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 12:42:10,495 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 12:42:10,497 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 12:42:10,497 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 12:42:10,499 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f01c6a20-b034-4aa1-b1a0-c5bfb214b897/bin/uautomizer-wIGwrQj20G/../../sv-benchmarks/c/combinations/square_6+soft_float_4-3a.c.cil.c [2021-11-23 12:42:10,583 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f01c6a20-b034-4aa1-b1a0-c5bfb214b897/bin/uautomizer-wIGwrQj20G/data/c21bcdc2e/5c3a99c651f449da949ee5d825ec7102/FLAG58dd9abdb [2021-11-23 12:42:11,246 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 12:42:11,248 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f01c6a20-b034-4aa1-b1a0-c5bfb214b897/sv-benchmarks/c/combinations/square_6+soft_float_4-3a.c.cil.c [2021-11-23 12:42:11,261 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f01c6a20-b034-4aa1-b1a0-c5bfb214b897/bin/uautomizer-wIGwrQj20G/data/c21bcdc2e/5c3a99c651f449da949ee5d825ec7102/FLAG58dd9abdb [2021-11-23 12:42:11,585 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f01c6a20-b034-4aa1-b1a0-c5bfb214b897/bin/uautomizer-wIGwrQj20G/data/c21bcdc2e/5c3a99c651f449da949ee5d825ec7102 [2021-11-23 12:42:11,590 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 12:42:11,593 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 12:42:11,599 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 12:42:11,599 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 12:42:11,604 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 12:42:11,605 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 12:42:11" (1/1) ... [2021-11-23 12:42:11,607 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@24c030f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:42:11, skipping insertion in model container [2021-11-23 12:42:11,608 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 12:42:11" (1/1) ... [2021-11-23 12:42:11,618 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 12:42:11,679 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 12:42:11,947 WARN L230 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_f01c6a20-b034-4aa1-b1a0-c5bfb214b897/sv-benchmarks/c/combinations/square_6+soft_float_4-3a.c.cil.c[1997,2010] [2021-11-23 12:42:11,958 WARN L230 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_f01c6a20-b034-4aa1-b1a0-c5bfb214b897/sv-benchmarks/c/combinations/square_6+soft_float_4-3a.c.cil.c[2366,2379] [2021-11-23 12:42:12,046 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 12:42:12,081 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 12:42:12,115 WARN L230 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_f01c6a20-b034-4aa1-b1a0-c5bfb214b897/sv-benchmarks/c/combinations/square_6+soft_float_4-3a.c.cil.c[1997,2010] [2021-11-23 12:42:12,120 WARN L230 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_f01c6a20-b034-4aa1-b1a0-c5bfb214b897/sv-benchmarks/c/combinations/square_6+soft_float_4-3a.c.cil.c[2366,2379] [2021-11-23 12:42:12,182 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 12:42:12,210 INFO L208 MainTranslator]: Completed translation [2021-11-23 12:42:12,211 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:42:12 WrapperNode [2021-11-23 12:42:12,211 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 12:42:12,212 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 12:42:12,213 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 12:42:12,213 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 12:42:12,222 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:42:12" (1/1) ... [2021-11-23 12:42:12,254 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:42:12" (1/1) ... [2021-11-23 12:42:12,327 INFO L137 Inliner]: procedures = 28, calls = 20, calls flagged for inlining = 16, calls inlined = 17, statements flattened = 320 [2021-11-23 12:42:12,328 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 12:42:12,329 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 12:42:12,329 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 12:42:12,330 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 12:42:12,340 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:42:12" (1/1) ... [2021-11-23 12:42:12,341 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:42:12" (1/1) ... [2021-11-23 12:42:12,366 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:42:12" (1/1) ... [2021-11-23 12:42:12,366 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:42:12" (1/1) ... [2021-11-23 12:42:12,380 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:42:12" (1/1) ... [2021-11-23 12:42:12,401 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:42:12" (1/1) ... [2021-11-23 12:42:12,408 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:42:12" (1/1) ... [2021-11-23 12:42:12,420 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 12:42:12,421 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 12:42:12,421 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 12:42:12,422 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 12:42:12,422 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:42:12" (1/1) ... [2021-11-23 12:42:12,430 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 12:42:12,442 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f01c6a20-b034-4aa1-b1a0-c5bfb214b897/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 12:42:12,454 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f01c6a20-b034-4aa1-b1a0-c5bfb214b897/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 12:42:12,471 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f01c6a20-b034-4aa1-b1a0-c5bfb214b897/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 12:42:12,502 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 12:42:12,502 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-23 12:42:12,503 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 12:42:12,503 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 12:42:12,622 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 12:42:12,624 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 12:42:15,469 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 12:42:15,479 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 12:42:15,479 INFO L301 CfgBuilder]: Removed 6 assume(true) statements. [2021-11-23 12:42:15,482 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 12:42:15 BoogieIcfgContainer [2021-11-23 12:42:15,482 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 12:42:15,501 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 12:42:15,501 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 12:42:15,504 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 12:42:15,505 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 12:42:11" (1/3) ... [2021-11-23 12:42:15,506 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63abe69 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 12:42:15, skipping insertion in model container [2021-11-23 12:42:15,506 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:42:12" (2/3) ... [2021-11-23 12:42:15,506 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63abe69 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 12:42:15, skipping insertion in model container [2021-11-23 12:42:15,506 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 12:42:15" (3/3) ... [2021-11-23 12:42:15,508 INFO L111 eAbstractionObserver]: Analyzing ICFG square_6+soft_float_4-3a.c.cil.c [2021-11-23 12:42:15,514 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 12:42:15,514 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2021-11-23 12:42:15,566 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 12:42:15,573 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, 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, mLoopAccelerationTechnique=FAST_UPR [2021-11-23 12:42:15,573 INFO L340 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2021-11-23 12:42:15,589 INFO L276 IsEmpty]: Start isEmpty. Operand has 95 states, 86 states have (on average 1.697674418604651) internal successors, (146), 94 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:42:15,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-23 12:42:15,594 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:42:15,595 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:42:15,596 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-23 12:42:15,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:42:15,601 INFO L85 PathProgramCache]: Analyzing trace with hash 1804936583, now seen corresponding path program 1 times [2021-11-23 12:42:15,613 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 12:42:15,613 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [519857084] [2021-11-23 12:42:15,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:42:15,614 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 12:42:15,614 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f01c6a20-b034-4aa1-b1a0-c5bfb214b897/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 12:42:15,615 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f01c6a20-b034-4aa1-b1a0-c5bfb214b897/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 12:42:15,617 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f01c6a20-b034-4aa1-b1a0-c5bfb214b897/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-23 12:42:16,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:42:16,195 INFO L263 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-23 12:42:16,198 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 12:42:16,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:42:16,246 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 12:42:16,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:42:16,279 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 12:42:16,279 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [519857084] [2021-11-23 12:42:16,280 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [519857084] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 12:42:16,280 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:42:16,281 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-23 12:42:16,282 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159205022] [2021-11-23 12:42:16,283 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 12:42:16,288 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-23 12:42:16,289 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 12:42:16,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-23 12:42:16,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-23 12:42:16,326 INFO L87 Difference]: Start difference. First operand has 95 states, 86 states have (on average 1.697674418604651) internal successors, (146), 94 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 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) [2021-11-23 12:42:16,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:42:16,361 INFO L93 Difference]: Finished difference Result 178 states and 268 transitions. [2021-11-23 12:42:16,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-23 12:42:16,364 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 [2021-11-23 12:42:16,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:42:16,376 INFO L225 Difference]: With dead ends: 178 [2021-11-23 12:42:16,376 INFO L226 Difference]: Without dead ends: 88 [2021-11-23 12:42:16,380 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-23 12:42:16,385 INFO L933 BasicCegarLoop]: 125 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, 125 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 [2021-11-23 12:42:16,386 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 12:42:16,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2021-11-23 12:42:16,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2021-11-23 12:42:16,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 80 states have (on average 1.4625) internal successors, (117), 87 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:42:16,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 117 transitions. [2021-11-23 12:42:16,436 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 117 transitions. Word has length 7 [2021-11-23 12:42:16,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:42:16,437 INFO L470 AbstractCegarLoop]: Abstraction has 88 states and 117 transitions. [2021-11-23 12:42:16,437 INFO L471 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) [2021-11-23 12:42:16,437 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 117 transitions. [2021-11-23 12:42:16,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-23 12:42:16,438 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:42:16,438 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:42:16,465 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f01c6a20-b034-4aa1-b1a0-c5bfb214b897/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-23 12:42:16,654 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f01c6a20-b034-4aa1-b1a0-c5bfb214b897/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 12:42:16,655 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-23 12:42:16,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:42:16,656 INFO L85 PathProgramCache]: Analyzing trace with hash 1804996165, now seen corresponding path program 1 times [2021-11-23 12:42:16,657 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 12:42:16,657 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [895871159] [2021-11-23 12:42:16,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:42:16,658 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 12:42:16,658 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f01c6a20-b034-4aa1-b1a0-c5bfb214b897/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 12:42:16,659 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f01c6a20-b034-4aa1-b1a0-c5bfb214b897/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 12:42:16,664 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f01c6a20-b034-4aa1-b1a0-c5bfb214b897/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-23 12:56:19,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:56:19,848 INFO L263 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-23 12:56:19,850 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 12:56:35,165 WARN L838 $PredicateComparison]: unable to prove that (and (exists ((|ULTIMATE.start_main1_~IN~0#1| (_ FloatingPoint 8 24))) (let ((.cse0 ((_ to_fp 8 24) c_currentRoundingMode 1.0))) (and (fp.geq |ULTIMATE.start_main1_~IN~0#1| (_ +zero 8 24)) (fp.lt |ULTIMATE.start_main1_~IN~0#1| .cse0) (= |c_ULTIMATE.start_main1_~result~0#1| (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode .cse0 (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 2.0)) |ULTIMATE.start_main1_~IN~0#1|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 8.0)) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 16.0)) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 128.0)) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|)))))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from false