./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/floats-cbmc-regression/float-no-simp1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 47ea0209 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a810398-882f-47ff-b122-ccbf70ccf1ff/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a810398-882f-47ff-b122-ccbf70ccf1ff/bin/utaipan-UUZaoUuFF8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a810398-882f-47ff-b122-ccbf70ccf1ff/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a810398-882f-47ff-b122-ccbf70ccf1ff/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/floats-cbmc-regression/float-no-simp1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a810398-882f-47ff-b122-ccbf70ccf1ff/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a810398-882f-47ff-b122-ccbf70ccf1ff/bin/utaipan-UUZaoUuFF8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 6be8c61124ae7b0d434e1a6e7e7df1be3e3bca0c1d0e7a5376e369656416ef61 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 02:23:15,469 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 02:23:15,471 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 02:23:15,516 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 02:23:15,517 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 02:23:15,519 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 02:23:15,521 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 02:23:15,524 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 02:23:15,531 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 02:23:15,533 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 02:23:15,535 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 02:23:15,537 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 02:23:15,537 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 02:23:15,539 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 02:23:15,541 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 02:23:15,544 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 02:23:15,545 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 02:23:15,547 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 02:23:15,550 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 02:23:15,554 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 02:23:15,557 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 02:23:15,560 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 02:23:15,562 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 02:23:15,563 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 02:23:15,569 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 02:23:15,569 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 02:23:15,570 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 02:23:15,571 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 02:23:15,572 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 02:23:15,582 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 02:23:15,583 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 02:23:15,585 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 02:23:15,588 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 02:23:15,590 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 02:23:15,594 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 02:23:15,595 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 02:23:15,596 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 02:23:15,596 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 02:23:15,597 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 02:23:15,599 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 02:23:15,600 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 02:23:15,601 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a810398-882f-47ff-b122-ccbf70ccf1ff/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-07 02:23:15,660 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 02:23:15,661 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 02:23:15,663 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 02:23:15,664 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 02:23:15,664 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 02:23:15,665 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 02:23:15,665 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-07 02:23:15,665 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 02:23:15,666 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 02:23:15,666 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-07 02:23:15,675 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-07 02:23:15,676 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 02:23:15,676 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-07 02:23:15,677 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-07 02:23:15,677 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-07 02:23:15,678 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 02:23:15,678 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 02:23:15,679 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 02:23:15,679 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 02:23:15,679 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 02:23:15,679 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 02:23:15,680 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 02:23:15,680 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 02:23:15,680 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 02:23:15,681 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 02:23:15,681 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 02:23:15,681 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 02:23:15,682 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 02:23:15,682 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 02:23:15,684 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 02:23:15,685 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 02:23:15,685 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 02:23:15,686 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 02:23:15,686 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 02:23:15,686 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-07 02:23:15,686 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 02:23:15,687 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 02:23:15,687 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 02:23:15,687 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 02:23:15,688 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_9a810398-882f-47ff-b122-ccbf70ccf1ff/bin/utaipan-UUZaoUuFF8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a810398-882f-47ff-b122-ccbf70ccf1ff/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6be8c61124ae7b0d434e1a6e7e7df1be3e3bca0c1d0e7a5376e369656416ef61 [2021-11-07 02:23:16,015 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 02:23:16,041 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 02:23:16,044 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 02:23:16,046 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 02:23:16,047 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 02:23:16,048 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a810398-882f-47ff-b122-ccbf70ccf1ff/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/floats-cbmc-regression/float-no-simp1.c [2021-11-07 02:23:16,120 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a810398-882f-47ff-b122-ccbf70ccf1ff/bin/utaipan-UUZaoUuFF8/data/b487ef7b7/35906990fdba4127b671881378de8d7b/FLAGe14341462 [2021-11-07 02:23:16,618 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 02:23:16,621 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a810398-882f-47ff-b122-ccbf70ccf1ff/sv-benchmarks/c/floats-cbmc-regression/float-no-simp1.c [2021-11-07 02:23:16,643 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a810398-882f-47ff-b122-ccbf70ccf1ff/bin/utaipan-UUZaoUuFF8/data/b487ef7b7/35906990fdba4127b671881378de8d7b/FLAGe14341462 [2021-11-07 02:23:17,003 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a810398-882f-47ff-b122-ccbf70ccf1ff/bin/utaipan-UUZaoUuFF8/data/b487ef7b7/35906990fdba4127b671881378de8d7b [2021-11-07 02:23:17,011 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 02:23:17,015 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 02:23:17,019 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 02:23:17,019 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 02:23:17,025 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 02:23:17,026 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:23:17" (1/1) ... [2021-11-07 02:23:17,030 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5548deb4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:23:17, skipping insertion in model container [2021-11-07 02:23:17,031 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:23:17" (1/1) ... [2021-11-07 02:23:17,039 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 02:23:17,051 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 02:23:17,255 WARN L228 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_9a810398-882f-47ff-b122-ccbf70ccf1ff/sv-benchmarks/c/floats-cbmc-regression/float-no-simp1.c[352,365] [2021-11-07 02:23:17,259 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 02:23:17,270 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 02:23:17,287 WARN L228 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_9a810398-882f-47ff-b122-ccbf70ccf1ff/sv-benchmarks/c/floats-cbmc-regression/float-no-simp1.c[352,365] [2021-11-07 02:23:17,288 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 02:23:17,304 INFO L208 MainTranslator]: Completed translation [2021-11-07 02:23:17,304 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:23:17 WrapperNode [2021-11-07 02:23:17,305 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 02:23:17,306 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 02:23:17,306 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 02:23:17,307 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 02:23:17,316 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:23:17" (1/1) ... [2021-11-07 02:23:17,324 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:23:17" (1/1) ... [2021-11-07 02:23:17,344 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 02:23:17,345 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 02:23:17,345 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 02:23:17,346 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 02:23:17,356 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:23:17" (1/1) ... [2021-11-07 02:23:17,356 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:23:17" (1/1) ... [2021-11-07 02:23:17,359 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:23:17" (1/1) ... [2021-11-07 02:23:17,359 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:23:17" (1/1) ... [2021-11-07 02:23:17,368 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:23:17" (1/1) ... [2021-11-07 02:23:17,372 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:23:17" (1/1) ... [2021-11-07 02:23:17,373 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:23:17" (1/1) ... [2021-11-07 02:23:17,382 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 02:23:17,383 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 02:23:17,384 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 02:23:17,384 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 02:23:17,387 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:23:17" (1/1) ... [2021-11-07 02:23:17,396 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 02:23:17,409 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a810398-882f-47ff-b122-ccbf70ccf1ff/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 02:23:17,429 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a810398-882f-47ff-b122-ccbf70ccf1ff/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 02:23:17,450 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a810398-882f-47ff-b122-ccbf70ccf1ff/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 02:23:17,494 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 02:23:17,495 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 02:23:17,495 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-07 02:23:17,495 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 02:23:17,728 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 02:23:17,729 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-11-07 02:23:17,732 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:23:17 BoogieIcfgContainer [2021-11-07 02:23:17,732 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 02:23:17,734 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 02:23:17,735 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 02:23:17,739 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 02:23:17,739 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 02:23:17" (1/3) ... [2021-11-07 02:23:17,740 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6cd4a721 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:23:17, skipping insertion in model container [2021-11-07 02:23:17,741 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:23:17" (2/3) ... [2021-11-07 02:23:17,741 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6cd4a721 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:23:17, skipping insertion in model container [2021-11-07 02:23:17,741 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:23:17" (3/3) ... [2021-11-07 02:23:17,743 INFO L111 eAbstractionObserver]: Analyzing ICFG float-no-simp1.c [2021-11-07 02:23:17,750 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 02:23:17,754 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-07 02:23:17,815 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 02:23:17,823 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=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-07 02:23:17,824 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-07 02:23:17,841 INFO L276 IsEmpty]: Start isEmpty. Operand has 6 states, 4 states have (on average 1.5) internal successors, (6), 5 states have internal predecessors, (6), 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) [2021-11-07 02:23:17,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-11-07 02:23:17,847 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:23:17,848 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-11-07 02:23:17,848 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 02:23:17,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:23:17,855 INFO L85 PathProgramCache]: Analyzing trace with hash 42445, now seen corresponding path program 1 times [2021-11-07 02:23:17,868 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 02:23:17,868 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1383081546] [2021-11-07 02:23:17,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:23:17,870 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 02:23:18,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-07 02:23:18,007 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-07 02:23:18,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-07 02:23:18,087 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-11-07 02:23:18,092 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-11-07 02:23:18,094 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-11-07 02:23:18,097 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-07 02:23:18,106 INFO L731 BasicCegarLoop]: Path program histogram: [1] [2021-11-07 02:23:18,110 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-07 02:23:18,135 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 02:23:18 BoogieIcfgContainer [2021-11-07 02:23:18,135 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-07 02:23:18,139 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-07 02:23:18,139 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-07 02:23:18,140 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-07 02:23:18,140 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:23:17" (3/4) ... [2021-11-07 02:23:18,144 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-07 02:23:18,145 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-07 02:23:18,150 INFO L168 Benchmark]: Toolchain (without parser) took 1131.99 ms. Allocated memory is still 98.6 MB. Free memory was 61.9 MB in the beginning and 50.5 MB in the end (delta: 11.5 MB). Peak memory consumption was 10.1 MB. Max. memory is 16.1 GB. [2021-11-07 02:23:18,151 INFO L168 Benchmark]: CDTParser took 0.34 ms. Allocated memory is still 98.6 MB. Free memory is still 78.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 02:23:18,153 INFO L168 Benchmark]: CACSL2BoogieTranslator took 286.38 ms. Allocated memory is still 98.6 MB. Free memory was 61.7 MB in the beginning and 75.3 MB in the end (delta: -13.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-11-07 02:23:18,154 INFO L168 Benchmark]: Boogie Procedure Inliner took 38.22 ms. Allocated memory is still 98.6 MB. Free memory was 75.3 MB in the beginning and 74.0 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 02:23:18,155 INFO L168 Benchmark]: Boogie Preprocessor took 37.56 ms. Allocated memory is still 98.6 MB. Free memory was 74.0 MB in the beginning and 72.9 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 02:23:18,156 INFO L168 Benchmark]: RCFGBuilder took 348.80 ms. Allocated memory is still 98.6 MB. Free memory was 72.9 MB in the beginning and 63.8 MB in the end (delta: 9.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-11-07 02:23:18,157 INFO L168 Benchmark]: TraceAbstraction took 400.70 ms. Allocated memory is still 98.6 MB. Free memory was 63.3 MB in the beginning and 50.9 MB in the end (delta: 12.3 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-11-07 02:23:18,166 INFO L168 Benchmark]: Witness Printer took 6.43 ms. Allocated memory is still 98.6 MB. Free memory was 50.9 MB in the beginning and 50.5 MB in the end (delta: 490.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 02:23:18,174 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34 ms. Allocated memory is still 98.6 MB. Free memory is still 78.3 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 286.38 ms. Allocated memory is still 98.6 MB. Free memory was 61.7 MB in the beginning and 75.3 MB in the end (delta: -13.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 38.22 ms. Allocated memory is still 98.6 MB. Free memory was 75.3 MB in the beginning and 74.0 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 37.56 ms. Allocated memory is still 98.6 MB. Free memory was 74.0 MB in the beginning and 72.9 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 348.80 ms. Allocated memory is still 98.6 MB. Free memory was 72.9 MB in the beginning and 63.8 MB in the end (delta: 9.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 400.70 ms. Allocated memory is still 98.6 MB. Free memory was 63.3 MB in the beginning and 50.9 MB in the end (delta: 12.3 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Witness Printer took 6.43 ms. Allocated memory is still 98.6 MB. Free memory was 50.9 MB in the beginning and 50.5 MB in the end (delta: 490.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * 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: 12]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of to_int at line 9, overapproximation of to_real at line 10. Possible FailurePath: [L6] unsigned int i, j; [L7] double d; [L9] i=100.0 [L10] d=i [L11] j=d [L12] COND TRUE !(j==100) [L12] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 6 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.2s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=6occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 3 NumberOfCodeBlocks, 3 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-11-07 02:23:18,233 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a810398-882f-47ff-b122-ccbf70ccf1ff/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with 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_9a810398-882f-47ff-b122-ccbf70ccf1ff/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a810398-882f-47ff-b122-ccbf70ccf1ff/bin/utaipan-UUZaoUuFF8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a810398-882f-47ff-b122-ccbf70ccf1ff/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a810398-882f-47ff-b122-ccbf70ccf1ff/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/floats-cbmc-regression/float-no-simp1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a810398-882f-47ff-b122-ccbf70ccf1ff/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a810398-882f-47ff-b122-ccbf70ccf1ff/bin/utaipan-UUZaoUuFF8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 6be8c61124ae7b0d434e1a6e7e7df1be3e3bca0c1d0e7a5376e369656416ef61 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 02:23:21,191 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 02:23:21,195 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 02:23:21,273 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 02:23:21,273 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 02:23:21,279 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 02:23:21,282 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 02:23:21,288 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 02:23:21,292 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 02:23:21,303 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 02:23:21,304 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 02:23:21,306 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 02:23:21,306 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 02:23:21,307 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 02:23:21,309 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 02:23:21,312 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 02:23:21,315 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 02:23:21,317 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 02:23:21,323 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 02:23:21,327 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 02:23:21,329 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 02:23:21,331 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 02:23:21,333 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 02:23:21,334 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 02:23:21,338 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 02:23:21,339 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 02:23:21,339 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 02:23:21,341 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 02:23:21,342 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 02:23:21,343 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 02:23:21,344 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 02:23:21,345 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 02:23:21,346 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 02:23:21,347 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 02:23:21,349 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 02:23:21,349 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 02:23:21,350 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 02:23:21,351 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 02:23:21,351 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 02:23:21,352 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 02:23:21,353 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 02:23:21,354 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a810398-882f-47ff-b122-ccbf70ccf1ff/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-07 02:23:21,384 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 02:23:21,385 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 02:23:21,386 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 02:23:21,386 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 02:23:21,387 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 02:23:21,387 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 02:23:21,387 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 02:23:21,388 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 02:23:21,388 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 02:23:21,389 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 02:23:21,389 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 02:23:21,389 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 02:23:21,390 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 02:23:21,390 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 02:23:21,390 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 02:23:21,391 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 02:23:21,391 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 02:23:21,391 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-07 02:23:21,391 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-07 02:23:21,392 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 02:23:21,392 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 02:23:21,392 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 02:23:21,392 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 02:23:21,393 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 02:23:21,393 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 02:23:21,393 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 02:23:21,394 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 02:23:21,394 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 02:23:21,394 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 02:23:21,395 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 02:23:21,395 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-07 02:23:21,395 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-07 02:23:21,395 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 02:23:21,396 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 02:23:21,396 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 02:23:21,396 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_9a810398-882f-47ff-b122-ccbf70ccf1ff/bin/utaipan-UUZaoUuFF8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a810398-882f-47ff-b122-ccbf70ccf1ff/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6be8c61124ae7b0d434e1a6e7e7df1be3e3bca0c1d0e7a5376e369656416ef61 [2021-11-07 02:23:21,901 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 02:23:21,936 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 02:23:21,941 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 02:23:21,943 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 02:23:21,944 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 02:23:21,948 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a810398-882f-47ff-b122-ccbf70ccf1ff/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/floats-cbmc-regression/float-no-simp1.c [2021-11-07 02:23:22,032 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a810398-882f-47ff-b122-ccbf70ccf1ff/bin/utaipan-UUZaoUuFF8/data/7e360ddca/a595d2fcc6bb4d1da23a0c245411b88e/FLAG87271f002 [2021-11-07 02:23:22,723 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 02:23:22,724 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a810398-882f-47ff-b122-ccbf70ccf1ff/sv-benchmarks/c/floats-cbmc-regression/float-no-simp1.c [2021-11-07 02:23:22,730 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a810398-882f-47ff-b122-ccbf70ccf1ff/bin/utaipan-UUZaoUuFF8/data/7e360ddca/a595d2fcc6bb4d1da23a0c245411b88e/FLAG87271f002 [2021-11-07 02:23:23,084 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a810398-882f-47ff-b122-ccbf70ccf1ff/bin/utaipan-UUZaoUuFF8/data/7e360ddca/a595d2fcc6bb4d1da23a0c245411b88e [2021-11-07 02:23:23,087 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 02:23:23,089 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 02:23:23,091 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 02:23:23,091 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 02:23:23,112 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 02:23:23,114 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:23:23" (1/1) ... [2021-11-07 02:23:23,115 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e1f6bcd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:23:23, skipping insertion in model container [2021-11-07 02:23:23,116 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:23:23" (1/1) ... [2021-11-07 02:23:23,125 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 02:23:23,140 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 02:23:23,303 WARN L228 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_9a810398-882f-47ff-b122-ccbf70ccf1ff/sv-benchmarks/c/floats-cbmc-regression/float-no-simp1.c[352,365] [2021-11-07 02:23:23,308 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 02:23:23,330 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 02:23:23,389 WARN L228 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_9a810398-882f-47ff-b122-ccbf70ccf1ff/sv-benchmarks/c/floats-cbmc-regression/float-no-simp1.c[352,365] [2021-11-07 02:23:23,391 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 02:23:23,412 INFO L208 MainTranslator]: Completed translation [2021-11-07 02:23:23,412 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:23:23 WrapperNode [2021-11-07 02:23:23,412 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 02:23:23,414 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 02:23:23,415 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 02:23:23,415 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 02:23:23,424 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:23:23" (1/1) ... [2021-11-07 02:23:23,436 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:23:23" (1/1) ... [2021-11-07 02:23:23,458 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 02:23:23,461 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 02:23:23,461 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 02:23:23,462 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 02:23:23,471 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:23:23" (1/1) ... [2021-11-07 02:23:23,472 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:23:23" (1/1) ... [2021-11-07 02:23:23,488 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:23:23" (1/1) ... [2021-11-07 02:23:23,490 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:23:23" (1/1) ... [2021-11-07 02:23:23,497 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:23:23" (1/1) ... [2021-11-07 02:23:23,502 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:23:23" (1/1) ... [2021-11-07 02:23:23,509 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:23:23" (1/1) ... [2021-11-07 02:23:23,513 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 02:23:23,516 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 02:23:23,517 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 02:23:23,517 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 02:23:23,518 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:23:23" (1/1) ... [2021-11-07 02:23:23,527 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 02:23:23,544 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a810398-882f-47ff-b122-ccbf70ccf1ff/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 02:23:23,564 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a810398-882f-47ff-b122-ccbf70ccf1ff/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 02:23:23,586 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a810398-882f-47ff-b122-ccbf70ccf1ff/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 02:23:23,635 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 02:23:23,636 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 02:23:23,636 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-07 02:23:23,636 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 02:23:24,183 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 02:23:24,183 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-11-07 02:23:24,186 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:23:24 BoogieIcfgContainer [2021-11-07 02:23:24,186 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 02:23:24,188 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 02:23:24,189 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 02:23:24,192 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 02:23:24,192 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 02:23:23" (1/3) ... [2021-11-07 02:23:24,193 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34f3211d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:23:24, skipping insertion in model container [2021-11-07 02:23:24,194 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:23:23" (2/3) ... [2021-11-07 02:23:24,194 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34f3211d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:23:24, skipping insertion in model container [2021-11-07 02:23:24,195 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:23:24" (3/3) ... [2021-11-07 02:23:24,196 INFO L111 eAbstractionObserver]: Analyzing ICFG float-no-simp1.c [2021-11-07 02:23:24,203 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 02:23:24,222 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-07 02:23:24,306 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 02:23:24,315 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=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-07 02:23:24,316 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-07 02:23:24,333 INFO L276 IsEmpty]: Start isEmpty. Operand has 8 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 7 states have internal predecessors, (8), 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) [2021-11-07 02:23:24,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-11-07 02:23:24,339 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:23:24,340 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-11-07 02:23:24,341 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 02:23:24,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:23:24,348 INFO L85 PathProgramCache]: Analyzing trace with hash 925604, now seen corresponding path program 1 times [2021-11-07 02:23:24,363 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:23:24,364 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [4443296] [2021-11-07 02:23:24,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:23:24,374 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:23:24,375 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a810398-882f-47ff-b122-ccbf70ccf1ff/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:23:24,385 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a810398-882f-47ff-b122-ccbf70ccf1ff/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:23:24,422 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a810398-882f-47ff-b122-ccbf70ccf1ff/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-07 02:23:24,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:23:24,529 INFO L263 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 02:23:24,534 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:23:24,713 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:23:24,713 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:23:24,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:23:24,770 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:23:24,771 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [4443296] [2021-11-07 02:23:24,772 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [4443296] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:23:24,772 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:23:24,772 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 02:23:24,775 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687518270] [2021-11-07 02:23:24,802 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 02:23:24,802 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:23:24,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 02:23:24,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=5, Unknown=0, NotChecked=0, Total=12 [2021-11-07 02:23:24,826 INFO L87 Difference]: Start difference. First operand has 8 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 7 states have internal predecessors, (8), 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 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 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) [2021-11-07 02:23:24,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:23:24,864 INFO L93 Difference]: Finished difference Result 11 states and 10 transitions. [2021-11-07 02:23:24,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 02:23:24,874 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 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 4 [2021-11-07 02:23:24,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:23:24,888 INFO L225 Difference]: With dead ends: 11 [2021-11-07 02:23:24,889 INFO L226 Difference]: Without dead ends: 0 [2021-11-07 02:23:24,892 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=5, Unknown=0, NotChecked=0, Total=12 [2021-11-07 02:23:24,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-07 02:23:24,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-07 02:23:24,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 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) [2021-11-07 02:23:24,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-07 02:23:24,923 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 4 [2021-11-07 02:23:24,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:23:24,923 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-07 02:23:24,923 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 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) [2021-11-07 02:23:24,924 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-07 02:23:24,924 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-07 02:23:24,927 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-11-07 02:23:24,949 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a810398-882f-47ff-b122-ccbf70ccf1ff/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-07 02:23:25,142 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a810398-882f-47ff-b122-ccbf70ccf1ff/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:23:25,145 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-11-07 02:23:25,148 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-11-07 02:23:25,148 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-11-07 02:23:25,148 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-11-07 02:23:25,149 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-11-07 02:23:25,149 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2021-11-07 02:23:25,149 INFO L857 garLoopResultBuilder]: For program point L12(line 12) no Hoare annotation was computed. [2021-11-07 02:23:25,149 INFO L857 garLoopResultBuilder]: For program point L12-1(line 12) no Hoare annotation was computed. [2021-11-07 02:23:25,150 INFO L857 garLoopResultBuilder]: For program point L4(lines 4 13) no Hoare annotation was computed. [2021-11-07 02:23:25,153 INFO L731 BasicCegarLoop]: Path program histogram: [1] [2021-11-07 02:23:25,155 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-07 02:23:25,161 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 02:23:25 BoogieIcfgContainer [2021-11-07 02:23:25,161 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-07 02:23:25,162 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-07 02:23:25,162 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-07 02:23:25,162 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-07 02:23:25,163 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:23:24" (3/4) ... [2021-11-07 02:23:25,169 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-11-07 02:23:25,186 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2021-11-07 02:23:25,187 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-11-07 02:23:25,188 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-11-07 02:23:25,188 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-07 02:23:25,229 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a810398-882f-47ff-b122-ccbf70ccf1ff/bin/utaipan-UUZaoUuFF8/witness.graphml [2021-11-07 02:23:25,229 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-07 02:23:25,231 INFO L168 Benchmark]: Toolchain (without parser) took 2141.26 ms. Allocated memory is still 79.7 MB. Free memory was 63.7 MB in the beginning and 53.1 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.7 MB. Max. memory is 16.1 GB. [2021-11-07 02:23:25,232 INFO L168 Benchmark]: CDTParser took 1.31 ms. Allocated memory is still 79.7 MB. Free memory is still 59.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 02:23:25,233 INFO L168 Benchmark]: CACSL2BoogieTranslator took 322.47 ms. Allocated memory is still 79.7 MB. Free memory was 63.3 MB in the beginning and 62.5 MB in the end (delta: 793.4 kB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-11-07 02:23:25,234 INFO L168 Benchmark]: Boogie Procedure Inliner took 43.81 ms. Allocated memory is still 79.7 MB. Free memory was 62.4 MB in the beginning and 61.0 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 02:23:25,234 INFO L168 Benchmark]: Boogie Preprocessor took 53.20 ms. Allocated memory is still 79.7 MB. Free memory was 61.0 MB in the beginning and 59.9 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 02:23:25,235 INFO L168 Benchmark]: RCFGBuilder took 670.29 ms. Allocated memory is still 79.7 MB. Free memory was 59.9 MB in the beginning and 50.9 MB in the end (delta: 9.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-11-07 02:23:25,236 INFO L168 Benchmark]: TraceAbstraction took 972.84 ms. Allocated memory is still 79.7 MB. Free memory was 50.6 MB in the beginning and 55.5 MB in the end (delta: -4.9 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 02:23:25,237 INFO L168 Benchmark]: Witness Printer took 67.41 ms. Allocated memory is still 79.7 MB. Free memory was 55.2 MB in the beginning and 53.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-07 02:23:25,241 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.31 ms. Allocated memory is still 79.7 MB. Free memory is still 59.8 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 322.47 ms. Allocated memory is still 79.7 MB. Free memory was 63.3 MB in the beginning and 62.5 MB in the end (delta: 793.4 kB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 43.81 ms. Allocated memory is still 79.7 MB. Free memory was 62.4 MB in the beginning and 61.0 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 53.20 ms. Allocated memory is still 79.7 MB. Free memory was 61.0 MB in the beginning and 59.9 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 670.29 ms. Allocated memory is still 79.7 MB. Free memory was 59.9 MB in the beginning and 50.9 MB in the end (delta: 9.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 972.84 ms. Allocated memory is still 79.7 MB. Free memory was 50.6 MB in the beginning and 55.5 MB in the end (delta: -4.9 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 67.41 ms. Allocated memory is still 79.7 MB. Free memory was 55.2 MB in the beginning and 53.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * 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 - PositiveResult [Line: 12]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 8 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.8s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 4 SDtfs, 3 SDslu, 1 SDs, 0 SdLazy, 1 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=8occurred in iteration=0, InterpolantAutomatonStates: 3, 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: 0.0s HoareAnnotationTime, 0 LocationsWithAnnotation, 0 PreInvPairs, 0 NumberOfFragments, 0 HoareAnnotationTreeSize, 0 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 0 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 6 ConstructedInterpolants, 1 QuantifiedInterpolants, 19 SizeOfPredicates, 5 NumberOfNonLiveVariables, 27 ConjunctsInSsa, 4 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-11-07 02:23:25,298 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a810398-882f-47ff-b122-ccbf70ccf1ff/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE