./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/float_req_bl_0480.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 63182f13 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48bfe166-afcb-4944-b1c7-071be546f47f/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48bfe166-afcb-4944-b1c7-071be546f47f/bin/utaipan-vmNK8stdcF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48bfe166-afcb-4944-b1c7-071be546f47f/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48bfe166-afcb-4944-b1c7-071be546f47f/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_0480.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48bfe166-afcb-4944-b1c7-071be546f47f/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48bfe166-afcb-4944-b1c7-071be546f47f/bin/utaipan-vmNK8stdcF --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 63d3574782fa6454b0d1694c2d11597178e5561b6615edd1b2b746975245a1dc --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-13 01:37:03,496 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-13 01:37:03,498 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-13 01:37:03,553 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-13 01:37:03,553 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-13 01:37:03,559 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-13 01:37:03,563 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-13 01:37:03,568 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-13 01:37:03,571 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-13 01:37:03,577 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-13 01:37:03,578 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-13 01:37:03,580 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-13 01:37:03,581 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-13 01:37:03,584 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-13 01:37:03,587 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-13 01:37:03,589 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-13 01:37:03,591 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-13 01:37:03,592 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-13 01:37:03,597 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-13 01:37:03,605 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-13 01:37:03,607 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-13 01:37:03,609 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-13 01:37:03,612 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-13 01:37:03,613 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-13 01:37:03,618 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-13 01:37:03,618 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-13 01:37:03,619 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-13 01:37:03,621 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-13 01:37:03,622 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-13 01:37:03,623 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-13 01:37:03,624 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-13 01:37:03,625 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-13 01:37:03,627 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-13 01:37:03,629 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-13 01:37:03,631 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-13 01:37:03,631 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-13 01:37:03,632 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-13 01:37:03,632 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-13 01:37:03,633 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-13 01:37:03,634 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-13 01:37:03,634 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-13 01:37:03,635 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48bfe166-afcb-4944-b1c7-071be546f47f/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-13 01:37:03,676 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-13 01:37:03,676 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-13 01:37:03,677 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-13 01:37:03,677 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-13 01:37:03,677 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-13 01:37:03,678 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-13 01:37:03,678 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-13 01:37:03,678 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-13 01:37:03,679 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-13 01:37:03,679 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-13 01:37:03,679 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-13 01:37:03,679 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-13 01:37:03,680 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-13 01:37:03,680 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-13 01:37:03,680 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-13 01:37:03,680 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-13 01:37:03,681 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-13 01:37:03,682 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-13 01:37:03,682 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-13 01:37:03,682 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-13 01:37:03,682 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-13 01:37:03,683 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-13 01:37:03,683 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-13 01:37:03,683 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-13 01:37:03,683 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-13 01:37:03,684 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-13 01:37:03,684 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-13 01:37:03,684 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-13 01:37:03,685 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-13 01:37:03,685 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-13 01:37:03,685 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-13 01:37:03,685 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 01:37:03,686 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-13 01:37:03,686 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-13 01:37:03,686 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-13 01:37:03,687 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-13 01:37:03,687 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-13 01:37:03,687 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-13 01:37:03,687 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-13 01:37:03,688 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-13 01:37:03,688 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_48bfe166-afcb-4944-b1c7-071be546f47f/bin/utaipan-vmNK8stdcF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48bfe166-afcb-4944-b1c7-071be546f47f/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 63d3574782fa6454b0d1694c2d11597178e5561b6615edd1b2b746975245a1dc [2021-11-13 01:37:04,021 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-13 01:37:04,061 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-13 01:37:04,064 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-13 01:37:04,065 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-13 01:37:04,066 INFO L275 PluginConnector]: CDTParser initialized [2021-11-13 01:37:04,068 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48bfe166-afcb-4944-b1c7-071be546f47f/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/float-newlib/float_req_bl_0480.c [2021-11-13 01:37:04,168 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48bfe166-afcb-4944-b1c7-071be546f47f/bin/utaipan-vmNK8stdcF/data/574fef766/243e7df8081c468496e33dcee7c21a94/FLAGc90b53699 [2021-11-13 01:37:04,627 INFO L306 CDTParser]: Found 1 translation units. [2021-11-13 01:37:04,628 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48bfe166-afcb-4944-b1c7-071be546f47f/sv-benchmarks/c/float-newlib/float_req_bl_0480.c [2021-11-13 01:37:04,635 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48bfe166-afcb-4944-b1c7-071be546f47f/bin/utaipan-vmNK8stdcF/data/574fef766/243e7df8081c468496e33dcee7c21a94/FLAGc90b53699 [2021-11-13 01:37:05,013 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48bfe166-afcb-4944-b1c7-071be546f47f/bin/utaipan-vmNK8stdcF/data/574fef766/243e7df8081c468496e33dcee7c21a94 [2021-11-13 01:37:05,016 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-13 01:37:05,017 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-13 01:37:05,031 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-13 01:37:05,032 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-13 01:37:05,034 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-13 01:37:05,034 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 01:37:05" (1/1) ... [2021-11-13 01:37:05,035 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5f5d1925 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:37:05, skipping insertion in model container [2021-11-13 01:37:05,036 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 01:37:05" (1/1) ... [2021-11-13 01:37:05,042 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-13 01:37:05,065 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 01:37:05,286 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_48bfe166-afcb-4944-b1c7-071be546f47f/sv-benchmarks/c/float-newlib/float_req_bl_0480.c[4489,4502] [2021-11-13 01:37:05,289 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 01:37:05,304 INFO L203 MainTranslator]: Completed pre-run [2021-11-13 01:37:05,349 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_48bfe166-afcb-4944-b1c7-071be546f47f/sv-benchmarks/c/float-newlib/float_req_bl_0480.c[4489,4502] [2021-11-13 01:37:05,349 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 01:37:05,364 INFO L208 MainTranslator]: Completed translation [2021-11-13 01:37:05,365 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:37:05 WrapperNode [2021-11-13 01:37:05,365 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-13 01:37:05,366 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-13 01:37:05,366 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-13 01:37:05,366 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-13 01:37:05,379 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:37:05" (1/1) ... [2021-11-13 01:37:05,406 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:37:05" (1/1) ... [2021-11-13 01:37:05,432 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-13 01:37:05,433 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-13 01:37:05,434 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-13 01:37:05,434 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-13 01:37:05,442 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:37:05" (1/1) ... [2021-11-13 01:37:05,442 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:37:05" (1/1) ... [2021-11-13 01:37:05,446 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:37:05" (1/1) ... [2021-11-13 01:37:05,446 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:37:05" (1/1) ... [2021-11-13 01:37:05,459 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:37:05" (1/1) ... [2021-11-13 01:37:05,466 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:37:05" (1/1) ... [2021-11-13 01:37:05,480 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:37:05" (1/1) ... [2021-11-13 01:37:05,483 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-13 01:37:05,483 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-13 01:37:05,484 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-13 01:37:05,484 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-13 01:37:05,485 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:37:05" (1/1) ... [2021-11-13 01:37:05,505 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 01:37:05,527 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48bfe166-afcb-4944-b1c7-071be546f47f/bin/utaipan-vmNK8stdcF/z3 [2021-11-13 01:37:05,537 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48bfe166-afcb-4944-b1c7-071be546f47f/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-13 01:37:05,547 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48bfe166-afcb-4944-b1c7-071be546f47f/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-13 01:37:05,574 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-13 01:37:05,574 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-13 01:37:05,574 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-11-13 01:37:05,574 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-13 01:37:05,575 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-11-13 01:37:05,575 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-13 01:37:05,575 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-13 01:37:05,575 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-13 01:37:05,575 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-13 01:37:05,576 INFO L130 BoogieDeclarations]: Found specification of procedure __ieee754_sqrtf [2021-11-13 01:37:05,576 INFO L138 BoogieDeclarations]: Found implementation of procedure __ieee754_sqrtf [2021-11-13 01:37:06,021 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-13 01:37:06,021 INFO L299 CfgBuilder]: Removed 14 assume(true) statements. [2021-11-13 01:37:06,024 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 01:37:06 BoogieIcfgContainer [2021-11-13 01:37:06,024 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-13 01:37:06,026 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-13 01:37:06,026 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-13 01:37:06,034 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-13 01:37:06,034 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 01:37:05" (1/3) ... [2021-11-13 01:37:06,035 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@211a92e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 01:37:06, skipping insertion in model container [2021-11-13 01:37:06,035 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:37:05" (2/3) ... [2021-11-13 01:37:06,036 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@211a92e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 01:37:06, skipping insertion in model container [2021-11-13 01:37:06,036 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 01:37:06" (3/3) ... [2021-11-13 01:37:06,037 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_0480.c [2021-11-13 01:37:06,041 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-13 01:37:06,041 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-13 01:37:06,109 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-13 01:37:06,118 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 [2021-11-13 01:37:06,119 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-13 01:37:06,148 INFO L276 IsEmpty]: Start isEmpty. Operand has 43 states, 38 states have (on average 1.6578947368421053) internal successors, (63), 39 states have internal predecessors, (63), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-13 01:37:06,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-13 01:37:06,152 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:37:06,153 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 01:37:06,154 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 01:37:06,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:37:06,161 INFO L85 PathProgramCache]: Analyzing trace with hash 2019825892, now seen corresponding path program 1 times [2021-11-13 01:37:06,170 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 01:37:06,171 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [707372682] [2021-11-13 01:37:06,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:37:06,172 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 01:37:06,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:37:06,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:37:06,391 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 01:37:06,391 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [707372682] [2021-11-13 01:37:06,392 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [707372682] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 01:37:06,392 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:37:06,392 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-13 01:37:06,393 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288246564] [2021-11-13 01:37:06,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:37:06,398 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-13 01:37:06,398 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 01:37:06,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-13 01:37:06,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-13 01:37:06,437 INFO L87 Difference]: Start difference. First operand has 43 states, 38 states have (on average 1.6578947368421053) internal successors, (63), 39 states have internal predecessors, (63), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 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) [2021-11-13 01:37:06,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:37:06,481 INFO L93 Difference]: Finished difference Result 85 states and 135 transitions. [2021-11-13 01:37:06,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-13 01:37:06,484 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 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) Word has length 8 [2021-11-13 01:37:06,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:37:06,491 INFO L225 Difference]: With dead ends: 85 [2021-11-13 01:37:06,491 INFO L226 Difference]: Without dead ends: 41 [2021-11-13 01:37:06,495 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 [2021-11-13 01:37:06,498 INFO L933 BasicCegarLoop]: 44 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.17ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.95ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.93ms IncrementalHoareTripleChecker+Time [2021-11-13 01:37:06,500 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 44 Invalid, 10 Unknown, 0 Unchecked, 0.95ms Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 20.93ms Time] [2021-11-13 01:37:06,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2021-11-13 01:37:06,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2021-11-13 01:37:06,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 37 states have (on average 1.2972972972972974) internal successors, (48), 37 states have internal predecessors, (48), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-13 01:37:06,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 52 transitions. [2021-11-13 01:37:06,537 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 52 transitions. Word has length 8 [2021-11-13 01:37:06,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:37:06,538 INFO L470 AbstractCegarLoop]: Abstraction has 41 states and 52 transitions. [2021-11-13 01:37:06,538 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 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) [2021-11-13 01:37:06,538 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 52 transitions. [2021-11-13 01:37:06,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-13 01:37:06,539 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:37:06,539 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 01:37:06,539 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-13 01:37:06,540 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 01:37:06,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:37:06,541 INFO L85 PathProgramCache]: Analyzing trace with hash 1226868043, now seen corresponding path program 1 times [2021-11-13 01:37:06,541 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 01:37:06,541 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [205779679] [2021-11-13 01:37:06,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:37:06,541 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 01:37:06,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-13 01:37:06,580 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-13 01:37:06,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-13 01:37:06,632 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-11-13 01:37:06,632 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-13 01:37:06,634 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-13 01:37:06,636 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-13 01:37:06,639 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2021-11-13 01:37:06,642 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-13 01:37:06,674 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.11 01:37:06 BoogieIcfgContainer [2021-11-13 01:37:06,674 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-13 01:37:06,675 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-13 01:37:06,675 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-13 01:37:06,675 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-13 01:37:06,675 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 01:37:06" (3/4) ... [2021-11-13 01:37:06,678 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-13 01:37:06,678 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-13 01:37:06,679 INFO L158 Benchmark]: Toolchain (without parser) took 1661.73ms. Allocated memory was 88.1MB in the beginning and 127.9MB in the end (delta: 39.8MB). Free memory was 56.2MB in the beginning and 90.3MB in the end (delta: -34.1MB). Peak memory consumption was 5.0MB. Max. memory is 16.1GB. [2021-11-13 01:37:06,680 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 88.1MB. Free memory was 43.7MB in the beginning and 43.7MB in the end (delta: 46.5kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-13 01:37:06,681 INFO L158 Benchmark]: CACSL2BoogieTranslator took 333.80ms. Allocated memory was 88.1MB in the beginning and 127.9MB in the end (delta: 39.8MB). Free memory was 56.0MB in the beginning and 101.1MB in the end (delta: -45.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-13 01:37:06,681 INFO L158 Benchmark]: Boogie Procedure Inliner took 66.69ms. Allocated memory is still 127.9MB. Free memory was 101.1MB in the beginning and 99.5MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-13 01:37:06,682 INFO L158 Benchmark]: Boogie Preprocessor took 49.35ms. Allocated memory is still 127.9MB. Free memory was 99.5MB in the beginning and 97.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-13 01:37:06,683 INFO L158 Benchmark]: RCFGBuilder took 540.42ms. Allocated memory is still 127.9MB. Free memory was 97.4MB in the beginning and 77.5MB in the end (delta: 19.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2021-11-13 01:37:06,683 INFO L158 Benchmark]: TraceAbstraction took 648.56ms. Allocated memory is still 127.9MB. Free memory was 77.0MB in the beginning and 90.9MB in the end (delta: -13.9MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-13 01:37:06,684 INFO L158 Benchmark]: Witness Printer took 3.79ms. Allocated memory is still 127.9MB. Free memory was 90.9MB in the beginning and 90.3MB in the end (delta: 655.7kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-13 01:37:06,687 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29ms. Allocated memory is still 88.1MB. Free memory was 43.7MB in the beginning and 43.7MB in the end (delta: 46.5kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 333.80ms. Allocated memory was 88.1MB in the beginning and 127.9MB in the end (delta: 39.8MB). Free memory was 56.0MB in the beginning and 101.1MB in the end (delta: -45.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 66.69ms. Allocated memory is still 127.9MB. Free memory was 101.1MB in the beginning and 99.5MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 49.35ms. Allocated memory is still 127.9MB. Free memory was 99.5MB in the beginning and 97.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 540.42ms. Allocated memory is still 127.9MB. Free memory was 97.4MB in the beginning and 77.5MB in the end (delta: 19.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * TraceAbstraction took 648.56ms. Allocated memory is still 127.9MB. Free memory was 77.0MB in the beginning and 90.9MB in the end (delta: -13.9MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 3.79ms. Allocated memory is still 127.9MB. Free memory was 90.9MB in the beginning and 90.3MB in the end (delta: 655.7kB). 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: 184]: 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 183, overapproximation of someUnaryDOUBLEoperation at line 86, overapproximation of bitwiseAnd at line 100, overapproximation of someBinaryArithmeticFLOAToperation at line 105. Possible FailurePath: [L14] static const float one_sqrt = 1.0, tiny_sqrt = 1.0e-30; [L83-L90] static const float one_acos = 1.0000000000e+00, pi = 3.1415925026e+00, pio2_hi_acos = 1.5707962513e+00, pio2_lo_acos = 7.5497894159e-08, pS0_acos = 1.6666667163e-01, pS1_acos = -3.2556581497e-01, pS2_acos = 2.0121252537e-01, pS3_acos = -4.0055535734e-02, pS4_acos = 7.9153501429e-04, pS5_acos = 3.4793309169e-05, qS1_acos = -2.4033949375e+00, qS2_acos = 2.0209457874e+00, qS3_acos = -6.8828397989e-01, qS4_acos = 7.7038154006e-02; [L179] float x = 1.0f; [L180] CALL, EXPR __ieee754_acosf(x) [L93] float z, p, q, r, w, s, c, df; [L94] __int32_t hx, ix; VAL [\old(x)=1, one_acos=1, one_sqrt=1, pi=75497894159/1000000000000000000, pi=15707962513/5000000000, pi=15707962513/10000000000, pS0_acos=16666667163/100000000000, pS2_acos=20121252537/100000000000, pS4_acos=79153501429/100000000000000, pS5_acos=34793309169/1000000000000000, qS2_acos=10104728937/5000000000, qS4_acos=38519077003/500000000000, tiny_sqrt=1/1000000000000000000000000000000, x=1] [L96] ieee_float_shape_type gf_u; [L97] gf_u.value = (x) [L98] EXPR gf_u.word [L98] (hx) = gf_u.word [L100] ix = hx & 0x7fffffff VAL [\old(x)=1, hx=8, one_acos=1, one_sqrt=1, pi=75497894159/1000000000000000000, pi=15707962513/10000000000, pi=15707962513/5000000000, pS0_acos=16666667163/100000000000, pS2_acos=20121252537/100000000000, pS4_acos=79153501429/100000000000000, pS5_acos=34793309169/1000000000000000, qS2_acos=10104728937/5000000000, qS4_acos=38519077003/500000000000, tiny_sqrt=1/1000000000000000000000000000000, x=1] [L101] COND TRUE ix == 0x3f800000 [L102] COND TRUE hx > 0 [L103] return 0.0; VAL [\old(x)=1, \result=0, hx=8, ix=1065353216, one_acos=1, one_sqrt=1, pi=15707962513/10000000000, pi=75497894159/1000000000000000000, pi=15707962513/5000000000, pS0_acos=16666667163/100000000000, pS2_acos=20121252537/100000000000, pS4_acos=79153501429/100000000000000, pS5_acos=34793309169/1000000000000000, qS2_acos=10104728937/5000000000, qS4_acos=38519077003/500000000000, tiny_sqrt=1/1000000000000000000000000000000, x=1] [L180] RET, EXPR __ieee754_acosf(x) [L180] float res = __ieee754_acosf(x); [L183] EXPR res == 0.0f && __signbit_float(res) == 0 VAL [one_acos=1, one_sqrt=1, pi=15707962513/10000000000, pi=15707962513/5000000000, pi=75497894159/1000000000000000000, pS0_acos=16666667163/100000000000, pS2_acos=20121252537/100000000000, pS4_acos=79153501429/100000000000000, pS5_acos=34793309169/1000000000000000, qS2_acos=10104728937/5000000000, qS4_acos=38519077003/500000000000, res=0, res == 0.0f && __signbit_float(res) == 0=0, tiny_sqrt=1/1000000000000000000000000000000, x=1] [L183] COND TRUE !(res == 0.0f && __signbit_float(res) == 0) [L184] reach_error() VAL [one_acos=1, one_sqrt=1, pi=15707962513/5000000000, pi=75497894159/1000000000000000000, pi=15707962513/10000000000, pS0_acos=16666667163/100000000000, pS2_acos=20121252537/100000000000, pS4_acos=79153501429/100000000000000, pS5_acos=34793309169/1000000000000000, qS2_acos=10104728937/5000000000, qS4_acos=38519077003/500000000000, res=0, tiny_sqrt=1/1000000000000000000000000000000, x=1] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 43 locations, 1 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, 20.93ms IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 44 SdHoareTripleChecker+Invalid, 17.17ms Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 10 IncrementalHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 44 mSDtfsCounter, 10 mSolverCounterSat, 0.95ms 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=43occurred 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, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 17 NumberOfCodeBlocks, 17 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 7 ConstructedInterpolants, 0 QuantifiedInterpolants, 7 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 [2021-11-13 01:37:06,731 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48bfe166-afcb-4944-b1c7-071be546f47f/bin/utaipan-vmNK8stdcF/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_48bfe166-afcb-4944-b1c7-071be546f47f/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48bfe166-afcb-4944-b1c7-071be546f47f/bin/utaipan-vmNK8stdcF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48bfe166-afcb-4944-b1c7-071be546f47f/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48bfe166-afcb-4944-b1c7-071be546f47f/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_0480.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48bfe166-afcb-4944-b1c7-071be546f47f/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48bfe166-afcb-4944-b1c7-071be546f47f/bin/utaipan-vmNK8stdcF --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 63d3574782fa6454b0d1694c2d11597178e5561b6615edd1b2b746975245a1dc --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-13 01:37:09,443 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-13 01:37:09,446 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-13 01:37:09,502 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-13 01:37:09,503 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-13 01:37:09,507 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-13 01:37:09,510 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-13 01:37:09,515 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-13 01:37:09,519 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-13 01:37:09,527 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-13 01:37:09,529 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-13 01:37:09,531 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-13 01:37:09,531 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-13 01:37:09,534 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-13 01:37:09,537 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-13 01:37:09,542 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-13 01:37:09,543 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-13 01:37:09,566 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-13 01:37:09,568 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-13 01:37:09,576 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-13 01:37:09,578 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-13 01:37:09,580 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-13 01:37:09,583 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-13 01:37:09,585 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-13 01:37:09,597 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-13 01:37:09,598 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-13 01:37:09,598 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-13 01:37:09,599 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-13 01:37:09,600 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-13 01:37:09,601 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-13 01:37:09,601 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-13 01:37:09,602 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-13 01:37:09,603 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-13 01:37:09,604 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-13 01:37:09,605 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-13 01:37:09,605 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-13 01:37:09,606 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-13 01:37:09,606 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-13 01:37:09,607 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-13 01:37:09,608 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-13 01:37:09,609 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-13 01:37:09,609 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48bfe166-afcb-4944-b1c7-071be546f47f/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-13 01:37:09,641 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-13 01:37:09,642 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-13 01:37:09,643 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-13 01:37:09,643 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-13 01:37:09,643 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-13 01:37:09,643 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-13 01:37:09,644 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-13 01:37:09,644 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-13 01:37:09,644 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-13 01:37:09,644 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-13 01:37:09,645 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-13 01:37:09,645 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-13 01:37:09,646 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-13 01:37:09,646 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-13 01:37:09,646 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-13 01:37:09,646 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-13 01:37:09,647 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-13 01:37:09,647 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-13 01:37:09,647 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-13 01:37:09,647 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-13 01:37:09,647 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-13 01:37:09,648 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-13 01:37:09,648 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-13 01:37:09,648 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-13 01:37:09,648 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-13 01:37:09,649 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-13 01:37:09,649 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-13 01:37:09,649 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 01:37:09,649 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-13 01:37:09,650 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-13 01:37:09,650 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-13 01:37:09,650 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-13 01:37:09,650 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-13 01:37:09,651 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-13 01:37:09,651 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-13 01:37:09,651 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-13 01:37:09,651 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_48bfe166-afcb-4944-b1c7-071be546f47f/bin/utaipan-vmNK8stdcF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48bfe166-afcb-4944-b1c7-071be546f47f/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 63d3574782fa6454b0d1694c2d11597178e5561b6615edd1b2b746975245a1dc [2021-11-13 01:37:10,106 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-13 01:37:10,137 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-13 01:37:10,140 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-13 01:37:10,142 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-13 01:37:10,142 INFO L275 PluginConnector]: CDTParser initialized [2021-11-13 01:37:10,144 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48bfe166-afcb-4944-b1c7-071be546f47f/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/float-newlib/float_req_bl_0480.c [2021-11-13 01:37:10,223 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48bfe166-afcb-4944-b1c7-071be546f47f/bin/utaipan-vmNK8stdcF/data/557e8f5f4/8cfc297acffb4f379cec0c2a3ca2d77d/FLAGd93883fff [2021-11-13 01:37:10,834 INFO L306 CDTParser]: Found 1 translation units. [2021-11-13 01:37:10,846 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48bfe166-afcb-4944-b1c7-071be546f47f/sv-benchmarks/c/float-newlib/float_req_bl_0480.c [2021-11-13 01:37:10,855 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48bfe166-afcb-4944-b1c7-071be546f47f/bin/utaipan-vmNK8stdcF/data/557e8f5f4/8cfc297acffb4f379cec0c2a3ca2d77d/FLAGd93883fff [2021-11-13 01:37:11,121 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48bfe166-afcb-4944-b1c7-071be546f47f/bin/utaipan-vmNK8stdcF/data/557e8f5f4/8cfc297acffb4f379cec0c2a3ca2d77d [2021-11-13 01:37:11,125 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-13 01:37:11,127 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-13 01:37:11,130 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-13 01:37:11,131 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-13 01:37:11,134 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-13 01:37:11,135 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 01:37:11" (1/1) ... [2021-11-13 01:37:11,136 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@698a477e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:37:11, skipping insertion in model container [2021-11-13 01:37:11,137 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 01:37:11" (1/1) ... [2021-11-13 01:37:11,144 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-13 01:37:11,186 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 01:37:11,385 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_48bfe166-afcb-4944-b1c7-071be546f47f/sv-benchmarks/c/float-newlib/float_req_bl_0480.c[4489,4502] [2021-11-13 01:37:11,388 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 01:37:11,414 INFO L203 MainTranslator]: Completed pre-run [2021-11-13 01:37:11,505 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_48bfe166-afcb-4944-b1c7-071be546f47f/sv-benchmarks/c/float-newlib/float_req_bl_0480.c[4489,4502] [2021-11-13 01:37:11,506 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 01:37:11,530 INFO L208 MainTranslator]: Completed translation [2021-11-13 01:37:11,530 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:37:11 WrapperNode [2021-11-13 01:37:11,530 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-13 01:37:11,533 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-13 01:37:11,534 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-13 01:37:11,534 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-13 01:37:11,542 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:37:11" (1/1) ... [2021-11-13 01:37:11,574 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:37:11" (1/1) ... [2021-11-13 01:37:11,613 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-13 01:37:11,613 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-13 01:37:11,614 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-13 01:37:11,614 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-13 01:37:11,623 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:37:11" (1/1) ... [2021-11-13 01:37:11,624 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:37:11" (1/1) ... [2021-11-13 01:37:11,630 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:37:11" (1/1) ... [2021-11-13 01:37:11,630 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:37:11" (1/1) ... [2021-11-13 01:37:11,643 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:37:11" (1/1) ... [2021-11-13 01:37:11,649 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:37:11" (1/1) ... [2021-11-13 01:37:11,653 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:37:11" (1/1) ... [2021-11-13 01:37:11,658 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-13 01:37:11,659 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-13 01:37:11,659 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-13 01:37:11,659 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-13 01:37:11,660 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:37:11" (1/1) ... [2021-11-13 01:37:11,666 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 01:37:11,677 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48bfe166-afcb-4944-b1c7-071be546f47f/bin/utaipan-vmNK8stdcF/z3 [2021-11-13 01:37:11,695 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48bfe166-afcb-4944-b1c7-071be546f47f/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-13 01:37:11,713 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48bfe166-afcb-4944-b1c7-071be546f47f/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-13 01:37:11,753 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-13 01:37:11,754 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-13 01:37:11,754 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2021-11-13 01:37:11,754 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-13 01:37:11,754 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-13 01:37:11,754 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-13 01:37:11,754 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2021-11-13 01:37:11,754 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-13 01:37:11,755 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-13 01:37:11,755 INFO L130 BoogieDeclarations]: Found specification of procedure __ieee754_sqrtf [2021-11-13 01:37:11,755 INFO L138 BoogieDeclarations]: Found implementation of procedure __ieee754_sqrtf [2021-11-13 01:37:22,678 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-13 01:37:22,679 INFO L299 CfgBuilder]: Removed 14 assume(true) statements. [2021-11-13 01:37:22,681 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 01:37:22 BoogieIcfgContainer [2021-11-13 01:37:22,681 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-13 01:37:22,683 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-13 01:37:22,683 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-13 01:37:22,687 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-13 01:37:22,687 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 01:37:11" (1/3) ... [2021-11-13 01:37:22,688 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2bcb08dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 01:37:22, skipping insertion in model container [2021-11-13 01:37:22,688 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:37:11" (2/3) ... [2021-11-13 01:37:22,688 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2bcb08dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 01:37:22, skipping insertion in model container [2021-11-13 01:37:22,688 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 01:37:22" (3/3) ... [2021-11-13 01:37:22,690 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_0480.c [2021-11-13 01:37:22,707 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-13 01:37:22,707 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-13 01:37:22,751 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-13 01:37:22,758 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 [2021-11-13 01:37:22,759 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-13 01:37:22,776 INFO L276 IsEmpty]: Start isEmpty. Operand has 58 states, 53 states have (on average 1.6415094339622642) internal successors, (87), 54 states have internal predecessors, (87), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-13 01:37:22,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-13 01:37:22,781 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:37:22,781 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 01:37:22,782 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 01:37:22,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:37:22,787 INFO L85 PathProgramCache]: Analyzing trace with hash 1029505661, now seen corresponding path program 1 times [2021-11-13 01:37:22,799 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:37:22,799 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1597124278] [2021-11-13 01:37:22,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:37:22,800 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:37:22,800 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48bfe166-afcb-4944-b1c7-071be546f47f/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:37:22,809 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48bfe166-afcb-4944-b1c7-071be546f47f/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:37:22,843 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48bfe166-afcb-4944-b1c7-071be546f47f/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-13 01:37:23,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:37:23,474 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-13 01:37:23,478 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:37:23,583 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:37:23,583 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:37:23,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:37:23,679 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:37:23,679 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1597124278] [2021-11-13 01:37:23,680 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1597124278] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 01:37:23,680 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:37:23,680 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-13 01:37:23,682 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060750440] [2021-11-13 01:37:23,683 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 01:37:23,688 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-13 01:37:23,689 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:37:23,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-13 01:37:23,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-13 01:37:23,726 INFO L87 Difference]: Start difference. First operand has 58 states, 53 states have (on average 1.6415094339622642) internal successors, (87), 54 states have internal predecessors, (87), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 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) [2021-11-13 01:37:23,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:37:23,763 INFO L93 Difference]: Finished difference Result 114 states and 182 transitions. [2021-11-13 01:37:23,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-13 01:37:23,766 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 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 10 [2021-11-13 01:37:23,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:37:23,775 INFO L225 Difference]: With dead ends: 114 [2021-11-13 01:37:23,775 INFO L226 Difference]: Without dead ends: 55 [2021-11-13 01:37:23,780 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-13 01:37:23,786 INFO L933 BasicCegarLoop]: 76 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.60ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.00ms IncrementalHoareTripleChecker+Time [2021-11-13 01:37:23,788 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 2.60ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.00ms Time] [2021-11-13 01:37:23,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2021-11-13 01:37:23,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2021-11-13 01:37:23,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 51 states have (on average 1.3529411764705883) internal successors, (69), 51 states have internal predecessors, (69), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-13 01:37:23,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 73 transitions. [2021-11-13 01:37:23,842 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 73 transitions. Word has length 10 [2021-11-13 01:37:23,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:37:23,843 INFO L470 AbstractCegarLoop]: Abstraction has 55 states and 73 transitions. [2021-11-13 01:37:23,843 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 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) [2021-11-13 01:37:23,844 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 73 transitions. [2021-11-13 01:37:23,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-13 01:37:23,846 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:37:23,846 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 01:37:23,867 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48bfe166-afcb-4944-b1c7-071be546f47f/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-13 01:37:24,067 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48bfe166-afcb-4944-b1c7-071be546f47f/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:37:24,067 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 01:37:24,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:37:24,068 INFO L85 PathProgramCache]: Analyzing trace with hash -1305801536, now seen corresponding path program 1 times [2021-11-13 01:37:24,069 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:37:24,069 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [628803353] [2021-11-13 01:37:24,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:37:24,069 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:37:24,069 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48bfe166-afcb-4944-b1c7-071be546f47f/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:37:24,071 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48bfe166-afcb-4944-b1c7-071be546f47f/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:37:24,086 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48bfe166-afcb-4944-b1c7-071be546f47f/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-13 01:37:24,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:37:24,706 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-13 01:37:24,707 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:37:25,064 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:37:25,064 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:37:25,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:37:25,228 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:37:25,228 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [628803353] [2021-11-13 01:37:25,229 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [628803353] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 01:37:25,229 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:37:25,229 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-13 01:37:25,230 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150833145] [2021-11-13 01:37:25,230 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 01:37:25,231 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 01:37:25,232 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:37:25,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 01:37:25,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-13 01:37:25,233 INFO L87 Difference]: Start difference. First operand 55 states and 73 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 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) [2021-11-13 01:37:28,694 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.47s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-13 01:37:31,017 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-13 01:37:33,632 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.61s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-13 01:37:33,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:37:33,635 INFO L93 Difference]: Finished difference Result 60 states and 78 transitions. [2021-11-13 01:37:33,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 01:37:33,864 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 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 11 [2021-11-13 01:37:33,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:37:33,866 INFO L225 Difference]: With dead ends: 60 [2021-11-13 01:37:33,866 INFO L226 Difference]: Without dead ends: 57 [2021-11-13 01:37:33,867 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-13 01:37:33,868 INFO L933 BasicCegarLoop]: 71 mSDtfsCounter, 4 mSDsluCounter, 190 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8111.38ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 261 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.55ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 9 IncrementalHoareTripleChecker+Unchecked, 8379.47ms IncrementalHoareTripleChecker+Time [2021-11-13 01:37:33,869 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 261 Invalid, 23 Unknown, 0 Unchecked, 3.55ms Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 3 Unknown, 9 Unchecked, 8379.47ms Time] [2021-11-13 01:37:33,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2021-11-13 01:37:33,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2021-11-13 01:37:33,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 53 states have (on average 1.3396226415094339) internal successors, (71), 53 states have internal predecessors, (71), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-13 01:37:33,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 75 transitions. [2021-11-13 01:37:33,886 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 75 transitions. Word has length 11 [2021-11-13 01:37:33,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:37:33,886 INFO L470 AbstractCegarLoop]: Abstraction has 57 states and 75 transitions. [2021-11-13 01:37:33,887 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 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) [2021-11-13 01:37:33,887 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 75 transitions. [2021-11-13 01:37:33,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-13 01:37:33,888 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:37:33,888 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 01:37:33,917 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48bfe166-afcb-4944-b1c7-071be546f47f/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-13 01:37:34,099 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48bfe166-afcb-4944-b1c7-071be546f47f/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:37:34,100 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 01:37:34,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:37:34,100 INFO L85 PathProgramCache]: Analyzing trace with hash -1303954494, now seen corresponding path program 1 times [2021-11-13 01:37:34,101 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:37:34,101 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1093216560] [2021-11-13 01:37:34,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:37:34,101 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:37:34,102 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48bfe166-afcb-4944-b1c7-071be546f47f/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:37:34,112 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48bfe166-afcb-4944-b1c7-071be546f47f/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:37:34,115 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48bfe166-afcb-4944-b1c7-071be546f47f/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-13 01:37:34,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:37:34,707 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-13 01:37:34,709 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:37:35,007 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:37:35,007 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:37:35,440 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:37:35,440 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:37:35,440 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1093216560] [2021-11-13 01:37:35,440 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1093216560] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 01:37:35,440 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:37:35,441 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-13 01:37:35,441 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069781838] [2021-11-13 01:37:35,441 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 01:37:35,441 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 01:37:35,442 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:37:35,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 01:37:35,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-13 01:37:35,443 INFO L87 Difference]: Start difference. First operand 57 states and 75 transitions. Second operand has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 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) [2021-11-13 01:37:35,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:37:35,457 INFO L93 Difference]: Finished difference Result 75 states and 93 transitions. [2021-11-13 01:37:35,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 01:37:35,457 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 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 11 [2021-11-13 01:37:35,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:37:35,459 INFO L225 Difference]: With dead ends: 75 [2021-11-13 01:37:35,459 INFO L226 Difference]: Without dead ends: 66 [2021-11-13 01:37:35,460 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-13 01:37:35,462 INFO L933 BasicCegarLoop]: 73 mSDtfsCounter, 16 mSDsluCounter, 254 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 327 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.33ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 8 IncrementalHoareTripleChecker+Unchecked, 0.08ms IncrementalHoareTripleChecker+Time [2021-11-13 01:37:35,462 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 327 Invalid, 8 Unknown, 0 Unchecked, 3.33ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 8 Unchecked, 0.08ms Time] [2021-11-13 01:37:35,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2021-11-13 01:37:35,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 57. [2021-11-13 01:37:35,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 53 states have (on average 1.320754716981132) internal successors, (70), 53 states have internal predecessors, (70), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-13 01:37:35,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 74 transitions. [2021-11-13 01:37:35,474 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 74 transitions. Word has length 11 [2021-11-13 01:37:35,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:37:35,474 INFO L470 AbstractCegarLoop]: Abstraction has 57 states and 74 transitions. [2021-11-13 01:37:35,474 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 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) [2021-11-13 01:37:35,475 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 74 transitions. [2021-11-13 01:37:35,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-13 01:37:35,476 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:37:35,476 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 01:37:35,505 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48bfe166-afcb-4944-b1c7-071be546f47f/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-13 01:37:35,697 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48bfe166-afcb-4944-b1c7-071be546f47f/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:37:35,698 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 01:37:35,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:37:35,698 INFO L85 PathProgramCache]: Analyzing trace with hash -1098932832, now seen corresponding path program 1 times [2021-11-13 01:37:35,699 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:37:35,699 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [228767289] [2021-11-13 01:37:35,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:37:35,699 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:37:35,700 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48bfe166-afcb-4944-b1c7-071be546f47f/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:37:35,701 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48bfe166-afcb-4944-b1c7-071be546f47f/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:37:35,705 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48bfe166-afcb-4944-b1c7-071be546f47f/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-13 01:37:36,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:37:36,391 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-13 01:37:36,392 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:37:36,829 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:37:36,829 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:37:37,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:37:37,453 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:37:37,453 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [228767289] [2021-11-13 01:37:37,453 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [228767289] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 01:37:37,453 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:37:37,454 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-13 01:37:37,454 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61964568] [2021-11-13 01:37:37,454 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 01:37:37,454 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 01:37:37,455 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:37:37,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 01:37:37,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-11-13 01:37:37,456 INFO L87 Difference]: Start difference. First operand 57 states and 74 transitions. Second operand has 8 states, 8 states have (on average 2.0) internal successors, (16), 8 states have internal predecessors, (16), 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) [2021-11-13 01:37:37,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:37:37,553 INFO L93 Difference]: Finished difference Result 64 states and 80 transitions. [2021-11-13 01:37:37,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 01:37:37,554 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.0) internal successors, (16), 8 states have internal predecessors, (16), 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 11 [2021-11-13 01:37:37,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:37:37,555 INFO L225 Difference]: With dead ends: 64 [2021-11-13 01:37:37,555 INFO L226 Difference]: Without dead ends: 16 [2021-11-13 01:37:37,556 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-11-13 01:37:37,557 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 10 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 42.63ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.67ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 7 IncrementalHoareTripleChecker+Unchecked, 43.35ms IncrementalHoareTripleChecker+Time [2021-11-13 01:37:37,558 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 43 Invalid, 11 Unknown, 0 Unchecked, 0.67ms Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 7 Unchecked, 43.35ms Time] [2021-11-13 01:37:37,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2021-11-13 01:37:37,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2021-11-13 01:37:37,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 15 states have (on average 1.0) internal successors, (15), 15 states have internal predecessors, (15), 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) [2021-11-13 01:37:37,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 15 transitions. [2021-11-13 01:37:37,562 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 15 transitions. Word has length 11 [2021-11-13 01:37:37,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:37:37,563 INFO L470 AbstractCegarLoop]: Abstraction has 16 states and 15 transitions. [2021-11-13 01:37:37,563 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.0) internal successors, (16), 8 states have internal predecessors, (16), 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) [2021-11-13 01:37:37,563 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 15 transitions. [2021-11-13 01:37:37,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-13 01:37:37,564 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:37:37,564 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 01:37:37,593 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48bfe166-afcb-4944-b1c7-071be546f47f/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-13 01:37:37,788 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48bfe166-afcb-4944-b1c7-071be546f47f/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:37:37,789 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 01:37:37,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:37:37,789 INFO L85 PathProgramCache]: Analyzing trace with hash -1217406699, now seen corresponding path program 1 times [2021-11-13 01:37:37,790 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:37:37,790 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [910518856] [2021-11-13 01:37:37,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:37:37,790 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:37:37,790 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48bfe166-afcb-4944-b1c7-071be546f47f/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:37:37,793 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48bfe166-afcb-4944-b1c7-071be546f47f/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:37:37,798 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48bfe166-afcb-4944-b1c7-071be546f47f/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-13 01:37:38,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:37:38,302 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-13 01:37:38,304 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:37:39,325 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:37:39,326 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:37:40,588 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:37:40,588 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:37:40,588 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [910518856] [2021-11-13 01:37:40,589 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [910518856] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 01:37:40,589 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:37:40,589 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 12 [2021-11-13 01:37:40,589 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407485386] [2021-11-13 01:37:40,589 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 01:37:40,590 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-13 01:37:40,590 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:37:40,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-13 01:37:40,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2021-11-13 01:37:40,591 INFO L87 Difference]: Start difference. First operand 16 states and 15 transitions. Second operand has 12 states, 12 states have (on average 1.75) internal successors, (21), 12 states have internal predecessors, (21), 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) [2021-11-13 01:37:40,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:37:40,801 INFO L93 Difference]: Finished difference Result 16 states and 15 transitions. [2021-11-13 01:37:40,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-13 01:37:40,802 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 1.75) internal successors, (21), 12 states have internal predecessors, (21), 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 15 [2021-11-13 01:37:40,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:37:40,802 INFO L225 Difference]: With dead ends: 16 [2021-11-13 01:37:40,802 INFO L226 Difference]: Without dead ends: 0 [2021-11-13 01:37:40,803 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2021-11-13 01:37:40,804 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 1 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 29.95ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.64ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 9 IncrementalHoareTripleChecker+Unchecked, 30.76ms IncrementalHoareTripleChecker+Time [2021-11-13 01:37:40,805 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 57 Invalid, 12 Unknown, 0 Unchecked, 0.64ms Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 9 Unchecked, 30.76ms Time] [2021-11-13 01:37:40,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-13 01:37:40,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-13 01:37:40,807 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) [2021-11-13 01:37:40,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-13 01:37:40,807 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2021-11-13 01:37:40,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:37:40,807 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-13 01:37:40,808 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 1.75) internal successors, (21), 12 states have internal predecessors, (21), 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) [2021-11-13 01:37:40,808 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-13 01:37:40,808 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-13 01:37:40,812 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-13 01:37:40,837 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48bfe166-afcb-4944-b1c7-071be546f47f/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-13 01:37:41,023 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48bfe166-afcb-4944-b1c7-071be546f47f/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:37:41,025 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-11-13 01:37:41,307 INFO L861 garLoopResultBuilder]: At program point L188(lines 173 189) the Hoare annotation is: true [2021-11-13 01:37:41,307 INFO L858 garLoopResultBuilder]: For program point L184(line 184) no Hoare annotation was computed. [2021-11-13 01:37:41,307 INFO L858 garLoopResultBuilder]: For program point L143(lines 143 147) no Hoare annotation was computed. [2021-11-13 01:37:41,308 INFO L858 garLoopResultBuilder]: For program point L110(lines 110 111) no Hoare annotation was computed. [2021-11-13 01:37:41,308 INFO L858 garLoopResultBuilder]: For program point L143-1(lines 133 158) no Hoare annotation was computed. [2021-11-13 01:37:41,308 INFO L858 garLoopResultBuilder]: For program point L143-2(lines 143 147) no Hoare annotation was computed. [2021-11-13 01:37:41,308 INFO L858 garLoopResultBuilder]: For program point L106(lines 106 108) no Hoare annotation was computed. [2021-11-13 01:37:41,308 INFO L858 garLoopResultBuilder]: For program point L102(lines 102 105) no Hoare annotation was computed. [2021-11-13 01:37:41,309 INFO L858 garLoopResultBuilder]: For program point L164-1(lines 164 168) no Hoare annotation was computed. [2021-11-13 01:37:41,309 INFO L854 garLoopResultBuilder]: At program point L164-2(lines 164 168) the Hoare annotation is: (and (= (_ bv1065353216 32) |ULTIMATE.start___ieee754_acosf_~ix~1#1|) |ULTIMATE.start_main_#t~short18#1| (exists ((currentRoundingMode RoundingMode)) (= ((_ to_fp 8 24) currentRoundingMode (_ +zero 11 53)) |ULTIMATE.start___signbit_float_~x#1|))) [2021-11-13 01:37:41,309 INFO L858 garLoopResultBuilder]: For program point L164-3(lines 164 168) no Hoare annotation was computed. [2021-11-13 01:37:41,309 INFO L858 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-11-13 01:37:41,309 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-11-13 01:37:41,310 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-11-13 01:37:41,310 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 184) no Hoare annotation was computed. [2021-11-13 01:37:41,310 INFO L854 garLoopResultBuilder]: At program point L136(line 136) the Hoare annotation is: false [2021-11-13 01:37:41,310 INFO L858 garLoopResultBuilder]: For program point L136-1(line 136) no Hoare annotation was computed. [2021-11-13 01:37:41,311 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-11-13 01:37:41,311 INFO L858 garLoopResultBuilder]: For program point L95-1(lines 95 99) no Hoare annotation was computed. [2021-11-13 01:37:41,311 INFO L854 garLoopResultBuilder]: At program point L95-2(lines 95 99) the Hoare annotation is: (exists ((currentRoundingMode RoundingMode)) (= |ULTIMATE.start___ieee754_acosf_~x#1| ((_ to_fp 8 24) currentRoundingMode 1.0))) [2021-11-13 01:37:41,311 INFO L854 garLoopResultBuilder]: At program point L157(lines 92 159) the Hoare annotation is: (and (= (_ bv1065353216 32) |ULTIMATE.start___ieee754_acosf_~ix~1#1|) (exists ((currentRoundingMode RoundingMode)) (= ((_ to_fp 8 24) currentRoundingMode (_ +zero 11 53)) |ULTIMATE.start___ieee754_acosf_#res#1|))) [2021-11-13 01:37:41,311 INFO L858 garLoopResultBuilder]: For program point L95-3(lines 95 99) no Hoare annotation was computed. [2021-11-13 01:37:41,312 INFO L854 garLoopResultBuilder]: At program point L170(lines 161 171) the Hoare annotation is: (and (= |ULTIMATE.start___signbit_float_#res#1| (_ bv0 32)) (= (_ bv1065353216 32) |ULTIMATE.start___ieee754_acosf_~ix~1#1|) |ULTIMATE.start_main_#t~short18#1|) [2021-11-13 01:37:41,312 INFO L854 garLoopResultBuilder]: At program point L129(line 129) the Hoare annotation is: false [2021-11-13 01:37:41,312 INFO L858 garLoopResultBuilder]: For program point L129-1(line 129) no Hoare annotation was computed. [2021-11-13 01:37:41,312 INFO L858 garLoopResultBuilder]: For program point L121(lines 121 158) no Hoare annotation was computed. [2021-11-13 01:37:41,313 INFO L858 garLoopResultBuilder]: For program point L183(line 183) no Hoare annotation was computed. [2021-11-13 01:37:41,313 INFO L858 garLoopResultBuilder]: For program point L183-2(lines 183 186) no Hoare annotation was computed. [2021-11-13 01:37:41,313 INFO L858 garLoopResultBuilder]: For program point L109(lines 109 158) no Hoare annotation was computed. [2021-11-13 01:37:41,313 INFO L858 garLoopResultBuilder]: For program point L138-1(lines 138 142) no Hoare annotation was computed. [2021-11-13 01:37:41,313 INFO L854 garLoopResultBuilder]: At program point L138-2(lines 138 142) the Hoare annotation is: false [2021-11-13 01:37:41,314 INFO L858 garLoopResultBuilder]: For program point L101(lines 101 108) no Hoare annotation was computed. [2021-11-13 01:37:41,314 INFO L858 garLoopResultBuilder]: For program point L31(lines 31 32) no Hoare annotation was computed. [2021-11-13 01:37:41,314 INFO L861 garLoopResultBuilder]: At program point L52-2(lines 52 61) the Hoare annotation is: true [2021-11-13 01:37:41,314 INFO L858 garLoopResultBuilder]: For program point L52-3(lines 16 81) no Hoare annotation was computed. [2021-11-13 01:37:41,314 INFO L858 garLoopResultBuilder]: For program point L44(lines 44 45) no Hoare annotation was computed. [2021-11-13 01:37:41,315 INFO L858 garLoopResultBuilder]: For program point L44-2(lines 44 45) no Hoare annotation was computed. [2021-11-13 01:37:41,315 INFO L858 garLoopResultBuilder]: For program point L65(lines 65 71) no Hoare annotation was computed. [2021-11-13 01:37:41,315 INFO L858 garLoopResultBuilder]: For program point L28(lines 28 29) no Hoare annotation was computed. [2021-11-13 01:37:41,315 INFO L861 garLoopResultBuilder]: At program point __ieee754_sqrtfENTRY(lines 16 81) the Hoare annotation is: true [2021-11-13 01:37:41,315 INFO L858 garLoopResultBuilder]: For program point __ieee754_sqrtfFINAL(lines 16 81) no Hoare annotation was computed. [2021-11-13 01:37:41,316 INFO L858 garLoopResultBuilder]: For program point L37(lines 37 41) no Hoare annotation was computed. [2021-11-13 01:37:41,316 INFO L858 garLoopResultBuilder]: For program point L37-2(lines 37 41) no Hoare annotation was computed. [2021-11-13 01:37:41,316 INFO L858 garLoopResultBuilder]: For program point L33(lines 33 34) no Hoare annotation was computed. [2021-11-13 01:37:41,316 INFO L858 garLoopResultBuilder]: For program point L54(lines 54 58) no Hoare annotation was computed. [2021-11-13 01:37:41,316 INFO L858 garLoopResultBuilder]: For program point L21-1(lines 21 25) no Hoare annotation was computed. [2021-11-13 01:37:41,316 INFO L858 garLoopResultBuilder]: For program point L54-2(lines 54 58) no Hoare annotation was computed. [2021-11-13 01:37:41,316 INFO L858 garLoopResultBuilder]: For program point __ieee754_sqrtfEXIT(lines 16 81) no Hoare annotation was computed. [2021-11-13 01:37:41,316 INFO L861 garLoopResultBuilder]: At program point L21-2(lines 21 25) the Hoare annotation is: true [2021-11-13 01:37:41,316 INFO L858 garLoopResultBuilder]: For program point L21-3(lines 21 25) no Hoare annotation was computed. [2021-11-13 01:37:41,317 INFO L858 garLoopResultBuilder]: For program point L75-1(lines 75 79) no Hoare annotation was computed. [2021-11-13 01:37:41,317 INFO L861 garLoopResultBuilder]: At program point L75-2(lines 75 79) the Hoare annotation is: true [2021-11-13 01:37:41,317 INFO L858 garLoopResultBuilder]: For program point L75-3(lines 75 79) no Hoare annotation was computed. [2021-11-13 01:37:41,317 INFO L858 garLoopResultBuilder]: For program point L38-2(lines 38 39) no Hoare annotation was computed. [2021-11-13 01:37:41,317 INFO L861 garLoopResultBuilder]: At program point L38-3(lines 38 39) the Hoare annotation is: true [2021-11-13 01:37:41,317 INFO L858 garLoopResultBuilder]: For program point L67(lines 67 70) no Hoare annotation was computed. [2021-11-13 01:37:41,318 INFO L858 garLoopResultBuilder]: For program point L38-4(lines 38 39) no Hoare annotation was computed. [2021-11-13 01:37:41,318 INFO L858 garLoopResultBuilder]: For program point L63(lines 63 72) no Hoare annotation was computed. [2021-11-13 01:37:41,321 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2021-11-13 01:37:41,322 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-13 01:37:41,329 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-11-13 01:37:41,333 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-11-13 01:37:41,334 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-11-13 01:37:41,335 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-11-13 01:37:41,335 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-11-13 01:37:41,336 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-11-13 01:37:41,337 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.11 01:37:41 BoogieIcfgContainer [2021-11-13 01:37:41,337 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-13 01:37:41,338 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-13 01:37:41,338 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-13 01:37:41,339 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-13 01:37:41,339 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 01:37:22" (3/4) ... [2021-11-13 01:37:41,342 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-11-13 01:37:41,349 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __ieee754_sqrtf [2021-11-13 01:37:41,357 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 30 nodes and edges [2021-11-13 01:37:41,358 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2021-11-13 01:37:41,358 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2021-11-13 01:37:41,359 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-13 01:37:41,383 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (\exists currentRoundingMode : FloatRoundingMode :: x == ~to_fp~LONGDOUBLE(currentRoundingMode, 1.0)) [2021-11-13 01:37:41,384 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: 1065353216bv32 == ix && (\exists currentRoundingMode : FloatRoundingMode :: ~to_fp~LONGDOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE()) == \result) [2021-11-13 01:37:41,385 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (1065353216bv32 == ix && aux-res == 0.0f && __signbit_float(res) == 0-aux) && (\exists currentRoundingMode : FloatRoundingMode :: ~to_fp~LONGDOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE()) == x) [2021-11-13 01:37:41,386 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (\result == 0bv32 && 1065353216bv32 == ix) && aux-res == 0.0f && __signbit_float(res) == 0-aux [2021-11-13 01:37:41,419 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48bfe166-afcb-4944-b1c7-071be546f47f/bin/utaipan-vmNK8stdcF/witness.graphml [2021-11-13 01:37:41,419 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-13 01:37:41,419 INFO L158 Benchmark]: Toolchain (without parser) took 30292.69ms. Allocated memory is still 77.6MB. Free memory was 58.9MB in the beginning and 36.3MB in the end (delta: 22.6MB). Peak memory consumption was 23.6MB. Max. memory is 16.1GB. [2021-11-13 01:37:41,420 INFO L158 Benchmark]: CDTParser took 0.24ms. Allocated memory is still 77.6MB. Free memory is still 57.7MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-13 01:37:41,420 INFO L158 Benchmark]: CACSL2BoogieTranslator took 400.14ms. Allocated memory is still 77.6MB. Free memory was 58.7MB in the beginning and 57.1MB in the end (delta: 1.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-11-13 01:37:41,421 INFO L158 Benchmark]: Boogie Procedure Inliner took 79.37ms. Allocated memory is still 77.6MB. Free memory was 57.1MB in the beginning and 55.0MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-13 01:37:41,421 INFO L158 Benchmark]: Boogie Preprocessor took 44.44ms. Allocated memory is still 77.6MB. Free memory was 55.0MB in the beginning and 52.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-13 01:37:41,422 INFO L158 Benchmark]: RCFGBuilder took 11022.70ms. Allocated memory is still 77.6MB. Free memory was 52.6MB in the beginning and 34.7MB in the end (delta: 17.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2021-11-13 01:37:41,422 INFO L158 Benchmark]: TraceAbstraction took 18654.37ms. Allocated memory is still 77.6MB. Free memory was 34.4MB in the beginning and 42.6MB in the end (delta: -8.2MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-13 01:37:41,422 INFO L158 Benchmark]: Witness Printer took 80.85ms. Allocated memory is still 77.6MB. Free memory was 42.6MB in the beginning and 36.3MB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-11-13 01:37:41,424 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24ms. Allocated memory is still 77.6MB. Free memory is still 57.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 400.14ms. Allocated memory is still 77.6MB. Free memory was 58.7MB in the beginning and 57.1MB in the end (delta: 1.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 79.37ms. Allocated memory is still 77.6MB. Free memory was 57.1MB in the beginning and 55.0MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 44.44ms. Allocated memory is still 77.6MB. Free memory was 55.0MB in the beginning and 52.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 11022.70ms. Allocated memory is still 77.6MB. Free memory was 52.6MB in the beginning and 34.7MB in the end (delta: 17.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 18654.37ms. Allocated memory is still 77.6MB. Free memory was 34.4MB in the beginning and 42.6MB in the end (delta: -8.2MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 80.85ms. Allocated memory is still 77.6MB. Free memory was 42.6MB in the beginning and 36.3MB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] * 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: 184]: 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 2 procedures, 58 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 18.6s, OverallIterations: 5, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 9.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.3s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 3 mSolverCounterUnknown, 31 SdHoareTripleChecker+Valid, 8453.65ms IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 31 mSDsluCounter, 764 SdHoareTripleChecker+Invalid, 8183.96ms Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 33 IncrementalHoareTripleChecker+Unchecked, 524 mSDsCounter, 1 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 17 IncrementalHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1 mSolverCounterUnsat, 240 mSDtfsCounter, 17 mSolverCounterSat, 10.80ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 108 GetRequests, 83 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 3.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=58occurred in iteration=0, InterpolantAutomatonStates: 23, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 5 MinimizatonAttempts, 9 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 13 LocationsWithAnnotation, 28 PreInvPairs, 33 NumberOfFragments, 44 HoareAnnotationTreeSize, 28 FomulaSimplifications, 30 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 13 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 2.7s SatisfiabilityAnalysisTime, 5.0s InterpolantComputationTime, 58 NumberOfCodeBlocks, 58 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 106 ConstructedInterpolants, 20 QuantifiedInterpolants, 352 SizeOfPredicates, 29 NumberOfNonLiveVariables, 301 ConjunctsInSsa, 31 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 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 - InvariantResult [Line: 38]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 52]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 164]: Loop Invariant [2021-11-13 01:37:41,434 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-11-13 01:37:41,434 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] Derived loop invariant: (1065353216bv32 == ix && aux-res == 0.0f && __signbit_float(res) == 0-aux) && (\exists currentRoundingMode : FloatRoundingMode :: ~to_fp~LONGDOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE()) == x) - InvariantResult [Line: 75]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 92]: Loop Invariant [2021-11-13 01:37:41,435 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-11-13 01:37:41,435 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] Derived loop invariant: 1065353216bv32 == ix && (\exists currentRoundingMode : FloatRoundingMode :: ~to_fp~LONGDOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE()) == \result) - InvariantResult [Line: 95]: Loop Invariant [2021-11-13 01:37:41,436 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-11-13 01:37:41,436 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] Derived loop invariant: (\exists currentRoundingMode : FloatRoundingMode :: x == ~to_fp~LONGDOUBLE(currentRoundingMode, 1.0)) - InvariantResult [Line: 138]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 173]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 21]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 161]: Loop Invariant Derived loop invariant: (\result == 0bv32 && 1065353216bv32 == ix) && aux-res == 0.0f && __signbit_float(res) == 0-aux RESULT: Ultimate proved your program to be correct! [2021-11-13 01:37:41,608 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48bfe166-afcb-4944-b1c7-071be546f47f/bin/utaipan-vmNK8stdcF/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