./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/float_req_bl_0330a.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4fc63b2a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcecf283-64ba-4877-a4c6-f8c4f2787406/bin/utaipan-verify-DbMuA5NWw2/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcecf283-64ba-4877-a4c6-f8c4f2787406/bin/utaipan-verify-DbMuA5NWw2/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcecf283-64ba-4877-a4c6-f8c4f2787406/bin/utaipan-verify-DbMuA5NWw2/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcecf283-64ba-4877-a4c6-f8c4f2787406/bin/utaipan-verify-DbMuA5NWw2/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_0330a.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcecf283-64ba-4877-a4c6-f8c4f2787406/bin/utaipan-verify-DbMuA5NWw2/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcecf283-64ba-4877-a4c6-f8c4f2787406/bin/utaipan-verify-DbMuA5NWw2 --witnessprinter.witness.filename witness --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 d8a5eb990c153192e318d2d9dac158f64e046e94b625c258b59ee0833398ae1b --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4fc63b2 [2024-11-02 12:37:13,750 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-02 12:37:13,833 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcecf283-64ba-4877-a4c6-f8c4f2787406/bin/utaipan-verify-DbMuA5NWw2/config/svcomp-Reach-32bit-Taipan_Default.epf [2024-11-02 12:37:13,840 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-02 12:37:13,841 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-02 12:37:13,877 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-02 12:37:13,878 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-02 12:37:13,878 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-02 12:37:13,879 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-02 12:37:13,880 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-02 12:37:13,880 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-02 12:37:13,881 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-02 12:37:13,881 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-02 12:37:13,881 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-02 12:37:13,882 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-02 12:37:13,882 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-02 12:37:13,882 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-02 12:37:13,883 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-02 12:37:13,883 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-02 12:37:13,884 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-02 12:37:13,884 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-02 12:37:13,884 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-02 12:37:13,885 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-02 12:37:13,885 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-02 12:37:13,886 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-02 12:37:13,886 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-02 12:37:13,886 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-02 12:37:13,887 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-02 12:37:13,887 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-02 12:37:13,887 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-02 12:37:13,888 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-02 12:37:13,888 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-02 12:37:13,888 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-02 12:37:13,889 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-02 12:37:13,889 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-02 12:37:13,889 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-02 12:37:13,890 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-02 12:37:13,890 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-02 12:37:13,890 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-02 12:37:13,891 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-02 12:37:13,891 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-02 12:37:13,891 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-02 12:37:13,892 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-02 12:37:13,892 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-02 12:37:13,892 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-02 12:37:13,892 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-02 12:37:13,893 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-02 12:37:13,893 INFO L153 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_dcecf283-64ba-4877-a4c6-f8c4f2787406/bin/utaipan-verify-DbMuA5NWw2/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcecf283-64ba-4877-a4c6-f8c4f2787406/bin/utaipan-verify-DbMuA5NWw2 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d8a5eb990c153192e318d2d9dac158f64e046e94b625c258b59ee0833398ae1b [2024-11-02 12:37:14,162 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-02 12:37:14,192 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-02 12:37:14,195 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-02 12:37:14,197 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-02 12:37:14,197 INFO L274 PluginConnector]: CDTParser initialized [2024-11-02 12:37:14,199 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcecf283-64ba-4877-a4c6-f8c4f2787406/bin/utaipan-verify-DbMuA5NWw2/../../sv-benchmarks/c/float-newlib/float_req_bl_0330a.c Unable to find full path for "g++" [2024-11-02 12:37:16,217 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-02 12:37:16,454 INFO L384 CDTParser]: Found 1 translation units. [2024-11-02 12:37:16,454 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcecf283-64ba-4877-a4c6-f8c4f2787406/sv-benchmarks/c/float-newlib/float_req_bl_0330a.c [2024-11-02 12:37:16,466 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcecf283-64ba-4877-a4c6-f8c4f2787406/bin/utaipan-verify-DbMuA5NWw2/data/20a4ffea6/3d7b2b42c585409fbbae6b5e32299613/FLAGbb6bdc25f [2024-11-02 12:37:16,486 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcecf283-64ba-4877-a4c6-f8c4f2787406/bin/utaipan-verify-DbMuA5NWw2/data/20a4ffea6/3d7b2b42c585409fbbae6b5e32299613 [2024-11-02 12:37:16,489 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-02 12:37:16,492 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-02 12:37:16,494 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-02 12:37:16,494 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-02 12:37:16,499 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-02 12:37:16,500 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 12:37:16" (1/1) ... [2024-11-02 12:37:16,501 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@64bc0dd2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:37:16, skipping insertion in model container [2024-11-02 12:37:16,501 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 12:37:16" (1/1) ... [2024-11-02 12:37:16,541 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-02 12:37:16,903 WARN L251 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_dcecf283-64ba-4877-a4c6-f8c4f2787406/sv-benchmarks/c/float-newlib/float_req_bl_0330a.c[15496,15509] [2024-11-02 12:37:16,907 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-02 12:37:16,958 INFO L200 MainTranslator]: Completed pre-run [2024-11-02 12:37:17,078 WARN L251 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_dcecf283-64ba-4877-a4c6-f8c4f2787406/sv-benchmarks/c/float-newlib/float_req_bl_0330a.c[15496,15509] [2024-11-02 12:37:17,079 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-02 12:37:17,124 INFO L204 MainTranslator]: Completed translation [2024-11-02 12:37:17,124 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:37:17 WrapperNode [2024-11-02 12:37:17,125 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-02 12:37:17,126 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-02 12:37:17,126 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-02 12:37:17,126 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-02 12:37:17,134 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:37:17" (1/1) ... [2024-11-02 12:37:17,167 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:37:17" (1/1) ... [2024-11-02 12:37:17,275 INFO L138 Inliner]: procedures = 27, calls = 491, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 1179 [2024-11-02 12:37:17,276 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-02 12:37:17,276 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-02 12:37:17,277 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-02 12:37:17,277 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-02 12:37:17,289 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:37:17" (1/1) ... [2024-11-02 12:37:17,289 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:37:17" (1/1) ... [2024-11-02 12:37:17,311 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:37:17" (1/1) ... [2024-11-02 12:37:17,311 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:37:17" (1/1) ... [2024-11-02 12:37:17,379 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:37:17" (1/1) ... [2024-11-02 12:37:17,402 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:37:17" (1/1) ... [2024-11-02 12:37:17,410 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:37:17" (1/1) ... [2024-11-02 12:37:17,422 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:37:17" (1/1) ... [2024-11-02 12:37:17,440 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-02 12:37:17,444 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-02 12:37:17,448 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-02 12:37:17,448 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-02 12:37:17,449 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:37:17" (1/1) ... [2024-11-02 12:37:17,458 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-02 12:37:17,479 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcecf283-64ba-4877-a4c6-f8c4f2787406/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 12:37:17,498 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcecf283-64ba-4877-a4c6-f8c4f2787406/bin/utaipan-verify-DbMuA5NWw2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-02 12:37:17,507 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcecf283-64ba-4877-a4c6-f8c4f2787406/bin/utaipan-verify-DbMuA5NWw2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-02 12:37:17,534 INFO L130 BoogieDeclarations]: Found specification of procedure __kernel_cosf [2024-11-02 12:37:17,534 INFO L138 BoogieDeclarations]: Found implementation of procedure __kernel_cosf [2024-11-02 12:37:17,534 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-02 12:37:17,535 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2024-11-02 12:37:17,535 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~real [2024-11-02 12:37:17,535 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-02 12:37:17,535 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2024-11-02 12:37:17,536 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-11-02 12:37:17,536 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2024-11-02 12:37:17,536 INFO L130 BoogieDeclarations]: Found specification of procedure __kernel_sinf [2024-11-02 12:37:17,536 INFO L138 BoogieDeclarations]: Found implementation of procedure __kernel_sinf [2024-11-02 12:37:17,537 INFO L130 BoogieDeclarations]: Found specification of procedure scalbn_float [2024-11-02 12:37:17,537 INFO L138 BoogieDeclarations]: Found implementation of procedure scalbn_float [2024-11-02 12:37:17,537 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-11-02 12:37:17,537 INFO L130 BoogieDeclarations]: Found specification of procedure copysign_float [2024-11-02 12:37:17,538 INFO L138 BoogieDeclarations]: Found implementation of procedure copysign_float [2024-11-02 12:37:17,538 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-02 12:37:17,538 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-02 12:37:17,538 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-02 12:37:17,538 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-02 12:37:17,777 INFO L238 CfgBuilder]: Building ICFG [2024-11-02 12:37:17,779 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-02 12:37:23,859 INFO L? ?]: Removed 246 outVars from TransFormulas that were not future-live. [2024-11-02 12:37:23,859 INFO L287 CfgBuilder]: Performing block encoding [2024-11-02 12:37:24,405 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-02 12:37:24,405 INFO L316 CfgBuilder]: Removed 59 assume(true) statements. [2024-11-02 12:37:24,406 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 12:37:24 BoogieIcfgContainer [2024-11-02 12:37:24,406 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-02 12:37:24,408 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-02 12:37:24,409 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-02 12:37:24,412 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-02 12:37:24,412 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 12:37:16" (1/3) ... [2024-11-02 12:37:24,413 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@762ad6c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 12:37:24, skipping insertion in model container [2024-11-02 12:37:24,413 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:37:17" (2/3) ... [2024-11-02 12:37:24,413 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@762ad6c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 12:37:24, skipping insertion in model container [2024-11-02 12:37:24,413 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 12:37:24" (3/3) ... [2024-11-02 12:37:24,415 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_0330a.c [2024-11-02 12:37:24,432 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-02 12:37:24,432 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-02 12:37:24,512 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-02 12:37:24,517 INFO L333 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, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@1787b0f3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-02 12:37:24,517 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-02 12:37:24,521 INFO L276 IsEmpty]: Start isEmpty. Operand has 169 states, 151 states have (on average 1.6754966887417218) internal successors, (253), 152 states have internal predecessors, (253), 12 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-11-02 12:37:24,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-02 12:37:24,526 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:37:24,527 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:37:24,527 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:37:24,531 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:37:24,531 INFO L85 PathProgramCache]: Analyzing trace with hash -121846902, now seen corresponding path program 1 times [2024-11-02 12:37:24,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:37:24,541 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868389616] [2024-11-02 12:37:24,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:37:24,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:37:51,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:37:51,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:37:51,470 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:37:51,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [868389616] [2024-11-02 12:37:51,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [868389616] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:37:51,472 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:37:51,473 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-02 12:37:51,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89164186] [2024-11-02 12:37:51,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:37:51,480 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-02 12:37:51,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:37:51,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-02 12:37:51,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-02 12:37:51,520 INFO L87 Difference]: Start difference. First operand has 169 states, 151 states have (on average 1.6754966887417218) internal successors, (253), 152 states have internal predecessors, (253), 12 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) 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) [2024-11-02 12:37:53,591 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-02 12:37:54,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:37:54,445 INFO L93 Difference]: Finished difference Result 337 states and 565 transitions. [2024-11-02 12:37:54,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-02 12:37:54,452 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 [2024-11-02 12:37:54,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:37:54,468 INFO L225 Difference]: With dead ends: 337 [2024-11-02 12:37:54,468 INFO L226 Difference]: Without dead ends: 167 [2024-11-02 12:37:54,475 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-02 12:37:54,482 INFO L432 NwaCegarLoop]: 178 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 178 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2024-11-02 12:37:54,485 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 178 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 56 Invalid, 1 Unknown, 0 Unchecked, 2.8s Time] [2024-11-02 12:37:54,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2024-11-02 12:37:54,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 167. [2024-11-02 12:37:54,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 150 states have (on average 1.3933333333333333) internal successors, (209), 150 states have internal predecessors, (209), 12 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-11-02 12:37:54,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 233 transitions. [2024-11-02 12:37:54,562 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 233 transitions. Word has length 8 [2024-11-02 12:37:54,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:37:54,562 INFO L471 AbstractCegarLoop]: Abstraction has 167 states and 233 transitions. [2024-11-02 12:37:54,562 INFO L472 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) [2024-11-02 12:37:54,563 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 233 transitions. [2024-11-02 12:37:54,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-02 12:37:54,563 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:37:54,563 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:37:54,566 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-02 12:37:54,567 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:37:54,568 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:37:54,568 INFO L85 PathProgramCache]: Analyzing trace with hash 828157411, now seen corresponding path program 1 times [2024-11-02 12:37:54,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:37:54,568 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1165394680] [2024-11-02 12:37:54,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:37:54,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms