./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_codestructure_dependencies_file-11.i --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_8584a84e-ed7b-4a93-91f8-0a55fbc71371/bin/utaipan-verify-DbMuA5NWw2/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8584a84e-ed7b-4a93-91f8-0a55fbc71371/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_8584a84e-ed7b-4a93-91f8-0a55fbc71371/bin/utaipan-verify-DbMuA5NWw2/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8584a84e-ed7b-4a93-91f8-0a55fbc71371/bin/utaipan-verify-DbMuA5NWw2/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_codestructure_dependencies_file-11.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8584a84e-ed7b-4a93-91f8-0a55fbc71371/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_8584a84e-ed7b-4a93-91f8-0a55fbc71371/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 9d1f41225cd95f570d39f7dc152bf434eeb5ae603d7cefe611440d61ef080184 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4fc63b2 [2024-11-02 12:40:12,813 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-02 12:40:12,907 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8584a84e-ed7b-4a93-91f8-0a55fbc71371/bin/utaipan-verify-DbMuA5NWw2/config/svcomp-Reach-32bit-Taipan_Default.epf [2024-11-02 12:40:12,914 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-02 12:40:12,915 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-02 12:40:12,950 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-02 12:40:12,953 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-02 12:40:12,953 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-02 12:40:12,954 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-02 12:40:12,956 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-02 12:40:12,957 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-02 12:40:12,957 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-02 12:40:12,957 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-02 12:40:12,958 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-02 12:40:12,958 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-02 12:40:12,960 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-02 12:40:12,961 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-02 12:40:12,961 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-02 12:40:12,962 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-02 12:40:12,962 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-02 12:40:12,966 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-02 12:40:12,966 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-02 12:40:12,967 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-02 12:40:12,967 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-02 12:40:12,967 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-02 12:40:12,968 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-02 12:40:12,968 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-02 12:40:12,968 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-02 12:40:12,968 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-02 12:40:12,969 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-02 12:40:12,969 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-02 12:40:12,969 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-02 12:40:12,971 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-02 12:40:12,971 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-02 12:40:12,972 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-02 12:40:12,972 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-02 12:40:12,973 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-02 12:40:12,973 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-02 12:40:12,973 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-02 12:40:12,974 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-02 12:40:12,974 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-02 12:40:12,974 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-02 12:40:12,975 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-02 12:40:12,975 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-02 12:40:12,975 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-02 12:40:12,976 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-02 12:40:12,976 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-02 12:40:12,976 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_8584a84e-ed7b-4a93-91f8-0a55fbc71371/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8584a84e-ed7b-4a93-91f8-0a55fbc71371/bin/utaipan-verify-DbMuA5NWw2 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9d1f41225cd95f570d39f7dc152bf434eeb5ae603d7cefe611440d61ef080184 [2024-11-02 12:40:13,287 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-02 12:40:13,313 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-02 12:40:13,316 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-02 12:40:13,318 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-02 12:40:13,319 INFO L274 PluginConnector]: CDTParser initialized [2024-11-02 12:40:13,320 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8584a84e-ed7b-4a93-91f8-0a55fbc71371/bin/utaipan-verify-DbMuA5NWw2/../../sv-benchmarks/c/hardness-nfm22/hardness_codestructure_dependencies_file-11.i Unable to find full path for "g++" [2024-11-02 12:40:15,289 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-02 12:40:15,594 INFO L384 CDTParser]: Found 1 translation units. [2024-11-02 12:40:15,597 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8584a84e-ed7b-4a93-91f8-0a55fbc71371/sv-benchmarks/c/hardness-nfm22/hardness_codestructure_dependencies_file-11.i [2024-11-02 12:40:15,610 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8584a84e-ed7b-4a93-91f8-0a55fbc71371/bin/utaipan-verify-DbMuA5NWw2/data/38102b7e2/81b9ddfddf3a448da48a108f38b3e3b4/FLAGef7de6f39 [2024-11-02 12:40:15,875 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8584a84e-ed7b-4a93-91f8-0a55fbc71371/bin/utaipan-verify-DbMuA5NWw2/data/38102b7e2/81b9ddfddf3a448da48a108f38b3e3b4 [2024-11-02 12:40:15,881 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-02 12:40:15,882 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-02 12:40:15,890 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-02 12:40:15,890 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-02 12:40:15,902 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-02 12:40:15,910 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 12:40:15" (1/1) ... [2024-11-02 12:40:15,911 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c02ebf0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:40:15, skipping insertion in model container [2024-11-02 12:40:15,911 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 12:40:15" (1/1) ... [2024-11-02 12:40:15,959 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-02 12:40:16,234 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_8584a84e-ed7b-4a93-91f8-0a55fbc71371/sv-benchmarks/c/hardness-nfm22/hardness_codestructure_dependencies_file-11.i[919,932] [2024-11-02 12:40:16,304 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-02 12:40:16,316 INFO L200 MainTranslator]: Completed pre-run [2024-11-02 12:40:16,328 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_8584a84e-ed7b-4a93-91f8-0a55fbc71371/sv-benchmarks/c/hardness-nfm22/hardness_codestructure_dependencies_file-11.i[919,932] [2024-11-02 12:40:16,356 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-02 12:40:16,377 INFO L204 MainTranslator]: Completed translation [2024-11-02 12:40:16,378 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:40:16 WrapperNode [2024-11-02 12:40:16,378 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-02 12:40:16,379 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-02 12:40:16,380 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-02 12:40:16,380 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-02 12:40:16,388 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:40:16" (1/1) ... [2024-11-02 12:40:16,398 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:40:16" (1/1) ... [2024-11-02 12:40:16,432 INFO L138 Inliner]: procedures = 26, calls = 30, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 127 [2024-11-02 12:40:16,433 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-02 12:40:16,433 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-02 12:40:16,434 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-02 12:40:16,434 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-02 12:40:16,449 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:40:16" (1/1) ... [2024-11-02 12:40:16,449 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:40:16" (1/1) ... [2024-11-02 12:40:16,452 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:40:16" (1/1) ... [2024-11-02 12:40:16,452 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:40:16" (1/1) ... [2024-11-02 12:40:16,468 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:40:16" (1/1) ... [2024-11-02 12:40:16,486 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:40:16" (1/1) ... [2024-11-02 12:40:16,489 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:40:16" (1/1) ... [2024-11-02 12:40:16,491 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:40:16" (1/1) ... [2024-11-02 12:40:16,494 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-02 12:40:16,495 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-02 12:40:16,496 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-02 12:40:16,496 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-02 12:40:16,497 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:40:16" (1/1) ... [2024-11-02 12:40:16,505 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-02 12:40:16,522 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8584a84e-ed7b-4a93-91f8-0a55fbc71371/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 12:40:16,536 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8584a84e-ed7b-4a93-91f8-0a55fbc71371/bin/utaipan-verify-DbMuA5NWw2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-02 12:40:16,539 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8584a84e-ed7b-4a93-91f8-0a55fbc71371/bin/utaipan-verify-DbMuA5NWw2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-02 12:40:16,569 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-02 12:40:16,569 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-02 12:40:16,570 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-02 12:40:16,570 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-02 12:40:16,570 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-02 12:40:16,570 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-02 12:40:16,702 INFO L238 CfgBuilder]: Building ICFG [2024-11-02 12:40:16,708 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-02 12:40:17,154 INFO L? ?]: Removed 8 outVars from TransFormulas that were not future-live. [2024-11-02 12:40:17,159 INFO L287 CfgBuilder]: Performing block encoding [2024-11-02 12:40:17,468 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-02 12:40:17,468 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-02 12:40:17,470 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 12:40:17 BoogieIcfgContainer [2024-11-02 12:40:17,470 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-02 12:40:17,475 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-02 12:40:17,475 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-02 12:40:17,480 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-02 12:40:17,481 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 12:40:15" (1/3) ... [2024-11-02 12:40:17,483 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ce5302f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 12:40:17, skipping insertion in model container [2024-11-02 12:40:17,483 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:40:16" (2/3) ... [2024-11-02 12:40:17,485 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ce5302f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 12:40:17, skipping insertion in model container [2024-11-02 12:40:17,485 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 12:40:17" (3/3) ... [2024-11-02 12:40:17,487 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_codestructure_dependencies_file-11.i [2024-11-02 12:40:17,510 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-02 12:40:17,510 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-02 12:40:17,580 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-02 12:40:17,591 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;@8ad54d9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-02 12:40:17,592 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-02 12:40:17,597 INFO L276 IsEmpty]: Start isEmpty. Operand has 35 states, 15 states have (on average 1.2) internal successors, (18), 16 states have internal predecessors, (18), 17 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2024-11-02 12:40:17,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-11-02 12:40:17,624 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:40:17,653 INFO L215 NwaCegarLoop]: trace histogram [17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:40:17,655 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:40:17,663 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:40:17,665 INFO L85 PathProgramCache]: Analyzing trace with hash -115613383, now seen corresponding path program 1 times [2024-11-02 12:40:17,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:40:17,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [611548684] [2024-11-02 12:40:17,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:40:17,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:40:18,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-02 12:40:18,443 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-02 12:40:19,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-02 12:40:19,337 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2024-11-02 12:40:19,340 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-02 12:40:19,341 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-02 12:40:19,344 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-02 12:40:19,349 INFO L407 BasicCegarLoop]: Path program histogram: [1] [2024-11-02 12:40:19,446 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-02 12:40:19,450 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.11 12:40:19 BoogieIcfgContainer [2024-11-02 12:40:19,450 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-02 12:40:19,450 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-02 12:40:19,451 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-02 12:40:19,451 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-02 12:40:19,451 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 12:40:17" (3/4) ... [2024-11-02 12:40:19,457 INFO L145 WitnessPrinter]: No result that supports witness generation found [2024-11-02 12:40:19,458 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-02 12:40:19,460 INFO L158 Benchmark]: Toolchain (without parser) took 3576.92ms. Allocated memory was 119.5MB in the beginning and 205.5MB in the end (delta: 86.0MB). Free memory was 65.6MB in the beginning and 84.3MB in the end (delta: -18.7MB). Peak memory consumption was 68.6MB. Max. memory is 16.1GB. [2024-11-02 12:40:19,461 INFO L158 Benchmark]: CDTParser took 0.24ms. Allocated memory is still 119.5MB. Free memory was 89.9MB in the beginning and 89.7MB in the end (delta: 134.3kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-02 12:40:19,462 INFO L158 Benchmark]: CACSL2BoogieTranslator took 488.58ms. Allocated memory was 119.5MB in the beginning and 167.8MB in the end (delta: 48.2MB). Free memory was 65.5MB in the beginning and 133.3MB in the end (delta: -67.8MB). Peak memory consumption was 13.1MB. Max. memory is 16.1GB. [2024-11-02 12:40:19,463 INFO L158 Benchmark]: Boogie Procedure Inliner took 53.36ms. Allocated memory is still 167.8MB. Free memory was 133.3MB in the beginning and 131.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-02 12:40:19,463 INFO L158 Benchmark]: Boogie Preprocessor took 60.99ms. Allocated memory is still 167.8MB. Free memory was 131.3MB in the beginning and 129.8MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-02 12:40:19,464 INFO L158 Benchmark]: RCFGBuilder took 974.91ms. Allocated memory is still 167.8MB. Free memory was 129.8MB in the beginning and 95.0MB in the end (delta: 34.9MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. [2024-11-02 12:40:19,466 INFO L158 Benchmark]: TraceAbstraction took 1975.09ms. Allocated memory was 167.8MB in the beginning and 205.5MB in the end (delta: 37.7MB). Free memory was 94.2MB in the beginning and 84.3MB in the end (delta: 9.9MB). Peak memory consumption was 47.2MB. Max. memory is 16.1GB. [2024-11-02 12:40:19,467 INFO L158 Benchmark]: Witness Printer took 7.67ms. Allocated memory is still 205.5MB. Free memory is still 84.3MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-02 12:40:19,472 INFO L338 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 119.5MB. Free memory was 89.9MB in the beginning and 89.7MB in the end (delta: 134.3kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 488.58ms. Allocated memory was 119.5MB in the beginning and 167.8MB in the end (delta: 48.2MB). Free memory was 65.5MB in the beginning and 133.3MB in the end (delta: -67.8MB). Peak memory consumption was 13.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 53.36ms. Allocated memory is still 167.8MB. Free memory was 133.3MB in the beginning and 131.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 60.99ms. Allocated memory is still 167.8MB. Free memory was 131.3MB in the beginning and 129.8MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 974.91ms. Allocated memory is still 167.8MB. Free memory was 129.8MB in the beginning and 95.0MB in the end (delta: 34.9MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. * TraceAbstraction took 1975.09ms. Allocated memory was 167.8MB in the beginning and 205.5MB in the end (delta: 37.7MB). Free memory was 94.2MB in the beginning and 84.3MB in the end (delta: 9.9MB). Peak memory consumption was 47.2MB. Max. memory is 16.1GB. * Witness Printer took 7.67ms. Allocated memory is still 205.5MB. Free memory is still 84.3MB. 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: 19]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 47, overapproximation of someUnaryDOUBLEoperation at line 59. Possible FailurePath: [L21] unsigned char isInitial = 0; [L22] unsigned char var_1_1 = 1; [L23] unsigned char var_1_2 = 0; [L24] unsigned char var_1_3 = 0; [L25] signed char var_1_4 = 5; [L26] signed char var_1_7 = 0; [L27] signed char var_1_8 = 16; [L28] signed char var_1_9 = 4; [L29] unsigned long int var_1_10 = 128; [L30] unsigned long int var_1_11 = 1422462314; [L31] signed short int var_1_12 = 8; [L32] signed short int var_1_15 = -50; [L33] unsigned long int var_1_16 = 1; [L34] unsigned long int var_1_17 = 3609236770; [L35] unsigned long int var_1_18 = 2902762324; [L36] double var_1_19 = 3.8; [L37] double var_1_20 = 255.75; [L38] unsigned short int var_1_21 = 0; [L39] unsigned long int last_1_var_1_10 = 128; [L40] unsigned long int last_1_var_1_16 = 1; [L41] double last_1_var_1_19 = 3.8; [L122] isInitial = 1 [L123] FCALL initially() [L124] COND TRUE 1 [L125] CALL updateLastVariables() [L113] last_1_var_1_10 = var_1_10 [L114] last_1_var_1_16 = var_1_16 [L115] last_1_var_1_19 = var_1_19 [L125] RET updateLastVariables() [L126] CALL updateVariables() [L85] var_1_2 = __VERIFIER_nondet_uchar() [L86] CALL assume_abort_if_not(var_1_2 >= 0) VAL [\old(cond)=1, isInitial=1, last_1_var_1_10=128, last_1_var_1_16=1, last_1_var_1_19=19/5, var_1_10=128, var_1_11=1422462314, var_1_12=8, var_1_15=-50, var_1_16=1, var_1_17=3609236770, var_1_18=2902762324, var_1_19=19/5, var_1_1=1, var_1_20=1023/4, var_1_21=0, var_1_3=0, var_1_4=5, var_1_7=0, var_1_8=16, var_1_9=4] [L20] COND FALSE !(!cond) [L86] RET assume_abort_if_not(var_1_2 >= 0) VAL [isInitial=1, last_1_var_1_10=128, last_1_var_1_16=1, last_1_var_1_19=19/5, var_1_10=128, var_1_11=1422462314, var_1_12=8, var_1_15=-50, var_1_16=1, var_1_17=3609236770, var_1_18=2902762324, var_1_19=19/5, var_1_1=1, var_1_20=1023/4, var_1_21=0, var_1_3=0, var_1_4=5, var_1_7=0, var_1_8=16, var_1_9=4] [L87] CALL assume_abort_if_not(var_1_2 <= 1) VAL [\old(cond)=1, isInitial=1, last_1_var_1_10=128, last_1_var_1_16=1, last_1_var_1_19=19/5, var_1_10=128, var_1_11=1422462314, var_1_12=8, var_1_15=-50, var_1_16=1, var_1_17=3609236770, var_1_18=2902762324, var_1_19=19/5, var_1_1=1, var_1_20=1023/4, var_1_21=0, var_1_2=0, var_1_3=0, var_1_4=5, var_1_7=0, var_1_8=16, var_1_9=4] [L20] COND FALSE !(!cond) [L87] RET assume_abort_if_not(var_1_2 <= 1) VAL [isInitial=1, last_1_var_1_10=128, last_1_var_1_16=1, last_1_var_1_19=19/5, var_1_10=128, var_1_11=1422462314, var_1_12=8, var_1_15=-50, var_1_16=1, var_1_17=3609236770, var_1_18=2902762324, var_1_19=19/5, var_1_1=1, var_1_20=1023/4, var_1_21=0, var_1_2=0, var_1_3=0, var_1_4=5, var_1_7=0, var_1_8=16, var_1_9=4] [L88] var_1_3 = __VERIFIER_nondet_uchar() [L89] CALL assume_abort_if_not(var_1_3 >= 0) VAL [\old(cond)=1, isInitial=1, last_1_var_1_10=128, last_1_var_1_16=1, last_1_var_1_19=19/5, var_1_10=128, var_1_11=1422462314, var_1_12=8, var_1_15=-50, var_1_16=1, var_1_17=3609236770, var_1_18=2902762324, var_1_19=19/5, var_1_1=1, var_1_20=1023/4, var_1_21=0, var_1_2=0, var_1_4=5, var_1_7=0, var_1_8=16, var_1_9=4] [L20] COND FALSE !(!cond) [L89] RET assume_abort_if_not(var_1_3 >= 0) VAL [isInitial=1, last_1_var_1_10=128, last_1_var_1_16=1, last_1_var_1_19=19/5, var_1_10=128, var_1_11=1422462314, var_1_12=8, var_1_15=-50, var_1_16=1, var_1_17=3609236770, var_1_18=2902762324, var_1_19=19/5, var_1_1=1, var_1_20=1023/4, var_1_21=0, var_1_2=0, var_1_4=5, var_1_7=0, var_1_8=16, var_1_9=4] [L90] CALL assume_abort_if_not(var_1_3 <= 0) VAL [\old(cond)=1, isInitial=1, last_1_var_1_10=128, last_1_var_1_16=1, last_1_var_1_19=19/5, var_1_10=128, var_1_11=1422462314, var_1_12=8, var_1_15=-50, var_1_16=1, var_1_17=3609236770, var_1_18=2902762324, var_1_19=19/5, var_1_1=1, var_1_20=1023/4, var_1_21=0, var_1_2=0, var_1_3=0, var_1_4=5, var_1_7=0, var_1_8=16, var_1_9=4] [L20] COND FALSE !(!cond) [L90] RET assume_abort_if_not(var_1_3 <= 0) VAL [isInitial=1, last_1_var_1_10=128, last_1_var_1_16=1, last_1_var_1_19=19/5, var_1_10=128, var_1_11=1422462314, var_1_12=8, var_1_15=-50, var_1_16=1, var_1_17=3609236770, var_1_18=2902762324, var_1_19=19/5, var_1_1=1, var_1_20=1023/4, var_1_21=0, var_1_2=0, var_1_3=0, var_1_4=5, var_1_7=0, var_1_8=16, var_1_9=4] [L91] var_1_7 = __VERIFIER_nondet_char() [L92] CALL assume_abort_if_not(var_1_7 >= 0) VAL [\old(cond)=1, isInitial=1, last_1_var_1_10=128, last_1_var_1_16=1, last_1_var_1_19=19/5, var_1_10=128, var_1_11=1422462314, var_1_12=8, var_1_15=-50, var_1_16=1, var_1_17=3609236770, var_1_18=2902762324, var_1_19=19/5, var_1_1=1, var_1_20=1023/4, var_1_21=0, var_1_2=0, var_1_3=0, var_1_4=5, var_1_7=63, var_1_8=16, var_1_9=4] [L20] COND FALSE !(!cond) [L92] RET assume_abort_if_not(var_1_7 >= 0) VAL [isInitial=1, last_1_var_1_10=128, last_1_var_1_16=1, last_1_var_1_19=19/5, var_1_10=128, var_1_11=1422462314, var_1_12=8, var_1_15=-50, var_1_16=1, var_1_17=3609236770, var_1_18=2902762324, var_1_19=19/5, var_1_1=1, var_1_20=1023/4, var_1_21=0, var_1_2=0, var_1_3=0, var_1_4=5, var_1_7=63, var_1_8=16, var_1_9=4] [L93] CALL assume_abort_if_not(var_1_7 <= 63) VAL [\old(cond)=1, isInitial=1, last_1_var_1_10=128, last_1_var_1_16=1, last_1_var_1_19=19/5, var_1_10=128, var_1_11=1422462314, var_1_12=8, var_1_15=-50, var_1_16=1, var_1_17=3609236770, var_1_18=2902762324, var_1_19=19/5, var_1_1=1, var_1_20=1023/4, var_1_21=0, var_1_2=0, var_1_3=0, var_1_4=5, var_1_7=63, var_1_8=16, var_1_9=4] [L20] COND FALSE !(!cond) [L93] RET assume_abort_if_not(var_1_7 <= 63) VAL [isInitial=1, last_1_var_1_10=128, last_1_var_1_16=1, last_1_var_1_19=19/5, var_1_10=128, var_1_11=1422462314, var_1_12=8, var_1_15=-50, var_1_16=1, var_1_17=3609236770, var_1_18=2902762324, var_1_19=19/5, var_1_1=1, var_1_20=1023/4, var_1_21=0, var_1_2=0, var_1_3=0, var_1_4=5, var_1_7=63, var_1_8=16, var_1_9=4] [L94] var_1_8 = __VERIFIER_nondet_char() [L95] CALL assume_abort_if_not(var_1_8 >= 0) VAL [\old(cond)=1, isInitial=1, last_1_var_1_10=128, last_1_var_1_16=1, last_1_var_1_19=19/5, var_1_10=128, var_1_11=1422462314, var_1_12=8, var_1_15=-50, var_1_16=1, var_1_17=3609236770, var_1_18=2902762324, var_1_19=19/5, var_1_1=1, var_1_20=1023/4, var_1_21=0, var_1_2=0, var_1_3=0, var_1_4=5, var_1_7=63, var_1_8=1, var_1_9=4] [L20] COND FALSE !(!cond) [L95] RET assume_abort_if_not(var_1_8 >= 0) VAL [isInitial=1, last_1_var_1_10=128, last_1_var_1_16=1, last_1_var_1_19=19/5, var_1_10=128, var_1_11=1422462314, var_1_12=8, var_1_15=-50, var_1_16=1, var_1_17=3609236770, var_1_18=2902762324, var_1_19=19/5, var_1_1=1, var_1_20=1023/4, var_1_21=0, var_1_2=0, var_1_3=0, var_1_4=5, var_1_7=63, var_1_8=1, var_1_9=4] [L96] CALL assume_abort_if_not(var_1_8 <= 63) VAL [\old(cond)=1, isInitial=1, last_1_var_1_10=128, last_1_var_1_16=1, last_1_var_1_19=19/5, var_1_10=128, var_1_11=1422462314, var_1_12=8, var_1_15=-50, var_1_16=1, var_1_17=3609236770, var_1_18=2902762324, var_1_19=19/5, var_1_1=1, var_1_20=1023/4, var_1_21=0, var_1_2=0, var_1_3=0, var_1_4=5, var_1_7=63, var_1_8=1, var_1_9=4] [L20] COND FALSE !(!cond) [L96] RET assume_abort_if_not(var_1_8 <= 63) VAL [isInitial=1, last_1_var_1_10=128, last_1_var_1_16=1, last_1_var_1_19=19/5, var_1_10=128, var_1_11=1422462314, var_1_12=8, var_1_15=-50, var_1_16=1, var_1_17=3609236770, var_1_18=2902762324, var_1_19=19/5, var_1_1=1, var_1_20=1023/4, var_1_21=0, var_1_2=0, var_1_3=0, var_1_4=5, var_1_7=63, var_1_8=1, var_1_9=4] [L97] var_1_9 = __VERIFIER_nondet_char() [L98] CALL assume_abort_if_not(var_1_9 >= 0) VAL [\old(cond)=1, isInitial=1, last_1_var_1_10=128, last_1_var_1_16=1, last_1_var_1_19=19/5, var_1_10=128, var_1_11=1422462314, var_1_12=8, var_1_15=-50, var_1_16=1, var_1_17=3609236770, var_1_18=2902762324, var_1_19=19/5, var_1_1=1, var_1_20=1023/4, var_1_21=0, var_1_2=0, var_1_3=0, var_1_4=5, var_1_7=63, var_1_8=1, var_1_9=0] [L20] COND FALSE !(!cond) [L98] RET assume_abort_if_not(var_1_9 >= 0) VAL [isInitial=1, last_1_var_1_10=128, last_1_var_1_16=1, last_1_var_1_19=19/5, var_1_10=128, var_1_11=1422462314, var_1_12=8, var_1_15=-50, var_1_16=1, var_1_17=3609236770, var_1_18=2902762324, var_1_19=19/5, var_1_1=1, var_1_20=1023/4, var_1_21=0, var_1_2=0, var_1_3=0, var_1_4=5, var_1_7=63, var_1_8=1, var_1_9=0] [L99] CALL assume_abort_if_not(var_1_9 <= 126) VAL [\old(cond)=1, isInitial=1, last_1_var_1_10=128, last_1_var_1_16=1, last_1_var_1_19=19/5, var_1_10=128, var_1_11=1422462314, var_1_12=8, var_1_15=-50, var_1_16=1, var_1_17=3609236770, var_1_18=2902762324, var_1_19=19/5, var_1_1=1, var_1_20=1023/4, var_1_21=0, var_1_2=0, var_1_3=0, var_1_4=5, var_1_7=63, var_1_8=1, var_1_9=0] [L20] COND FALSE !(!cond) [L99] RET assume_abort_if_not(var_1_9 <= 126) VAL [isInitial=1, last_1_var_1_10=128, last_1_var_1_16=1, last_1_var_1_19=19/5, var_1_10=128, var_1_11=1422462314, var_1_12=8, var_1_15=-50, var_1_16=1, var_1_17=3609236770, var_1_18=2902762324, var_1_19=19/5, var_1_1=1, var_1_20=1023/4, var_1_21=0, var_1_2=0, var_1_3=0, var_1_4=5, var_1_7=63, var_1_8=1, var_1_9=0] [L100] var_1_11 = __VERIFIER_nondet_ulong() [L101] CALL assume_abort_if_not(var_1_11 >= 1073741823) VAL [\old(cond)=1, isInitial=1, last_1_var_1_10=128, last_1_var_1_16=1, last_1_var_1_19=19/5, var_1_10=128, var_1_11=-2147483649, var_1_12=8, var_1_15=-50, var_1_16=1, var_1_17=3609236770, var_1_18=2902762324, var_1_19=19/5, var_1_1=1, var_1_20=1023/4, var_1_21=0, var_1_2=0, var_1_3=0, var_1_4=5, var_1_7=63, var_1_8=1, var_1_9=0] [L20] COND FALSE !(!cond) [L101] RET assume_abort_if_not(var_1_11 >= 1073741823) VAL [isInitial=1, last_1_var_1_10=128, last_1_var_1_16=1, last_1_var_1_19=19/5, var_1_10=128, var_1_11=-2147483649, var_1_12=8, var_1_15=-50, var_1_16=1, var_1_17=3609236770, var_1_18=2902762324, var_1_19=19/5, var_1_1=1, var_1_20=1023/4, var_1_21=0, var_1_2=0, var_1_3=0, var_1_4=5, var_1_7=63, var_1_8=1, var_1_9=0] [L102] CALL assume_abort_if_not(var_1_11 <= 2147483647) VAL [\old(cond)=1, isInitial=1, last_1_var_1_10=128, last_1_var_1_16=1, last_1_var_1_19=19/5, var_1_10=128, var_1_11=-2147483649, var_1_12=8, var_1_15=-50, var_1_16=1, var_1_17=3609236770, var_1_18=2902762324, var_1_19=19/5, var_1_1=1, var_1_20=1023/4, var_1_21=0, var_1_2=0, var_1_3=0, var_1_4=5, var_1_7=63, var_1_8=1, var_1_9=0] [L20] COND FALSE !(!cond) [L102] RET assume_abort_if_not(var_1_11 <= 2147483647) VAL [isInitial=1, last_1_var_1_10=128, last_1_var_1_16=1, last_1_var_1_19=19/5, var_1_10=128, var_1_11=-2147483649, var_1_12=8, var_1_15=-50, var_1_16=1, var_1_17=3609236770, var_1_18=2902762324, var_1_19=19/5, var_1_1=1, var_1_20=1023/4, var_1_21=0, var_1_2=0, var_1_3=0, var_1_4=5, var_1_7=63, var_1_8=1, var_1_9=0] [L103] var_1_17 = __VERIFIER_nondet_ulong() [L104] CALL assume_abort_if_not(var_1_17 >= 2147483647) VAL [\old(cond)=1, isInitial=1, last_1_var_1_10=128, last_1_var_1_16=1, last_1_var_1_19=19/5, var_1_10=128, var_1_11=-2147483649, var_1_12=8, var_1_15=-50, var_1_16=1, var_1_17=-10737418241, var_1_18=2902762324, var_1_19=19/5, var_1_1=1, var_1_20=1023/4, var_1_21=0, var_1_2=0, var_1_3=0, var_1_4=5, var_1_7=63, var_1_8=1, var_1_9=0] [L20] COND FALSE !(!cond) [L104] RET assume_abort_if_not(var_1_17 >= 2147483647) VAL [isInitial=1, last_1_var_1_10=128, last_1_var_1_16=1, last_1_var_1_19=19/5, var_1_10=128, var_1_11=-2147483649, var_1_12=8, var_1_15=-50, var_1_16=1, var_1_17=-10737418241, var_1_18=2902762324, var_1_19=19/5, var_1_1=1, var_1_20=1023/4, var_1_21=0, var_1_2=0, var_1_3=0, var_1_4=5, var_1_7=63, var_1_8=1, var_1_9=0] [L105] CALL assume_abort_if_not(var_1_17 <= 4294967294) VAL [\old(cond)=1, isInitial=1, last_1_var_1_10=128, last_1_var_1_16=1, last_1_var_1_19=19/5, var_1_10=128, var_1_11=-2147483649, var_1_12=8, var_1_15=-50, var_1_16=1, var_1_17=-10737418241, var_1_18=2902762324, var_1_19=19/5, var_1_1=1, var_1_20=1023/4, var_1_21=0, var_1_2=0, var_1_3=0, var_1_4=5, var_1_7=63, var_1_8=1, var_1_9=0] [L20] COND FALSE !(!cond) [L105] RET assume_abort_if_not(var_1_17 <= 4294967294) VAL [isInitial=1, last_1_var_1_10=128, last_1_var_1_16=1, last_1_var_1_19=19/5, var_1_10=128, var_1_11=-2147483649, var_1_12=8, var_1_15=-50, var_1_16=1, var_1_17=-10737418241, var_1_18=2902762324, var_1_19=19/5, var_1_1=1, var_1_20=1023/4, var_1_21=0, var_1_2=0, var_1_3=0, var_1_4=5, var_1_7=63, var_1_8=1, var_1_9=0] [L106] var_1_18 = __VERIFIER_nondet_ulong() [L107] CALL assume_abort_if_not(var_1_18 >= 2147483647) VAL [\old(cond)=1, isInitial=1, last_1_var_1_10=128, last_1_var_1_16=1, last_1_var_1_19=19/5, var_1_10=128, var_1_11=-2147483649, var_1_12=8, var_1_15=-50, var_1_16=1, var_1_17=-10737418241, var_1_18=-10737418241, var_1_19=19/5, var_1_1=1, var_1_20=1023/4, var_1_21=0, var_1_2=0, var_1_3=0, var_1_4=5, var_1_7=63, var_1_8=1, var_1_9=0] [L20] COND FALSE !(!cond) [L107] RET assume_abort_if_not(var_1_18 >= 2147483647) VAL [isInitial=1, last_1_var_1_10=128, last_1_var_1_16=1, last_1_var_1_19=19/5, var_1_10=128, var_1_11=-2147483649, var_1_12=8, var_1_15=-50, var_1_16=1, var_1_17=-10737418241, var_1_18=-10737418241, var_1_19=19/5, var_1_1=1, var_1_20=1023/4, var_1_21=0, var_1_2=0, var_1_3=0, var_1_4=5, var_1_7=63, var_1_8=1, var_1_9=0] [L108] CALL assume_abort_if_not(var_1_18 <= 4294967294) VAL [\old(cond)=1, isInitial=1, last_1_var_1_10=128, last_1_var_1_16=1, last_1_var_1_19=19/5, var_1_10=128, var_1_11=-2147483649, var_1_12=8, var_1_15=-50, var_1_16=1, var_1_17=-10737418241, var_1_18=-10737418241, var_1_19=19/5, var_1_1=1, var_1_20=1023/4, var_1_21=0, var_1_2=0, var_1_3=0, var_1_4=5, var_1_7=63, var_1_8=1, var_1_9=0] [L20] COND FALSE !(!cond) [L108] RET assume_abort_if_not(var_1_18 <= 4294967294) VAL [isInitial=1, last_1_var_1_10=128, last_1_var_1_16=1, last_1_var_1_19=19/5, var_1_10=128, var_1_11=-2147483649, var_1_12=8, var_1_15=-50, var_1_16=1, var_1_17=-10737418241, var_1_18=-10737418241, var_1_19=19/5, var_1_1=1, var_1_20=1023/4, var_1_21=0, var_1_2=0, var_1_3=0, var_1_4=5, var_1_7=63, var_1_8=1, var_1_9=0] [L109] var_1_20 = __VERIFIER_nondet_double() [L110] CALL assume_abort_if_not((var_1_20 >= -922337.2036854765600e+13F && var_1_20 <= -1.0e-20F) || (var_1_20 <= 9223372.036854765600e+12F && var_1_20 >= 1.0e-20F )) VAL [\old(cond)=1, isInitial=1, last_1_var_1_10=128, last_1_var_1_16=1, last_1_var_1_19=19/5, var_1_10=128, var_1_11=-2147483649, var_1_12=8, var_1_15=-50, var_1_16=1, var_1_17=-10737418241, var_1_18=-10737418241, var_1_19=19/5, var_1_1=1, var_1_21=0, var_1_2=0, var_1_3=0, var_1_4=5, var_1_7=63, var_1_8=1, var_1_9=0] [L20] COND FALSE !(!cond) [L110] RET assume_abort_if_not((var_1_20 >= -922337.2036854765600e+13F && var_1_20 <= -1.0e-20F) || (var_1_20 <= 9223372.036854765600e+12F && var_1_20 >= 1.0e-20F )) VAL [isInitial=1, last_1_var_1_10=128, last_1_var_1_16=1, last_1_var_1_19=19/5, var_1_10=128, var_1_11=-2147483649, var_1_12=8, var_1_15=-50, var_1_16=1, var_1_17=-10737418241, var_1_18=-10737418241, var_1_19=19/5, var_1_1=1, var_1_21=0, var_1_2=0, var_1_3=0, var_1_4=5, var_1_7=63, var_1_8=1, var_1_9=0] [L126] RET updateVariables() [L127] CALL step() [L45] COND TRUE last_1_var_1_16 != last_1_var_1_10 [L46] COND TRUE var_1_8 <= last_1_var_1_16 [L47] COND TRUE (- last_1_var_1_19) >= last_1_var_1_19 [L48] var_1_12 = var_1_8 [L54] COND TRUE var_1_12 == var_1_12 [L55] var_1_4 = ((8 + ((((var_1_7) > (var_1_8)) ? (var_1_7) : (var_1_8)))) - var_1_9) [L57] var_1_1 = (var_1_2 || (! var_1_3)) [L58] var_1_10 = (4027026809u - (((((var_1_11) < 0 ) ? -(var_1_11) : (var_1_11))) - var_1_7)) [L59] var_1_19 = ((((((((var_1_20) < 0 ) ? -(var_1_20) : (var_1_20)))) < (1.4)) ? (((((var_1_20) < 0 ) ? -(var_1_20) : (var_1_20)))) : (1.4))) [L60] COND FALSE !(var_1_19 != var_1_19) [L63] COND TRUE var_1_4 > var_1_12 [L64] var_1_16 = (var_1_17 - (var_1_11 - var_1_8)) [L69] COND TRUE \read(var_1_1) [L70] COND FALSE !(var_1_19 >= var_1_19) [L75] var_1_15 = var_1_7 [L80] COND TRUE (var_1_16 == (var_1_8 - var_1_9)) && var_1_1 [L81] var_1_21 = var_1_9 [L127] RET step() [L128] CALL, EXPR property() [L118-L119] return (((((((var_1_1 == ((unsigned char) (var_1_2 || (! var_1_3)))) && ((var_1_12 == var_1_12) ? (var_1_4 == ((signed char) ((8 + ((((var_1_7) > (var_1_8)) ? (var_1_7) : (var_1_8)))) - var_1_9))) : 1)) && (var_1_10 == ((unsigned long int) (4027026809u - (((((var_1_11) < 0 ) ? -(var_1_11) : (var_1_11))) - var_1_7))))) && ((last_1_var_1_16 != last_1_var_1_10) ? ((var_1_8 <= last_1_var_1_16) ? (((- last_1_var_1_19) >= last_1_var_1_19) ? (var_1_12 == ((signed short int) var_1_8)) : 1) : 1) : (var_1_12 == ((signed short int) var_1_9)))) && (var_1_1 ? ((var_1_19 >= var_1_19) ? ((! var_1_3) ? (var_1_15 == ((signed short int) var_1_8)) : 1) : (var_1_15 == ((signed short int) var_1_7))) : (var_1_15 == ((signed short int) 5)))) && ((var_1_19 != var_1_19) ? (var_1_16 == ((unsigned long int) (((((var_1_11) < (var_1_7)) ? (var_1_11) : (var_1_7))) + var_1_8))) : ((var_1_4 > var_1_12) ? (var_1_16 == ((unsigned long int) (var_1_17 - (var_1_11 - var_1_8)))) : (var_1_16 == ((unsigned long int) (((((var_1_17) > (var_1_18)) ? (var_1_17) : (var_1_18))) - var_1_9)))))) && (var_1_19 == ((double) ((((((((var_1_20) < 0 ) ? -(var_1_20) : (var_1_20)))) < (1.4)) ? (((((var_1_20) < 0 ) ? -(var_1_20) : (var_1_20)))) : (1.4)))))) && (((var_1_16 == (var_1_8 - var_1_9)) && var_1_1) ? (var_1_21 == ((unsigned short int) var_1_9)) : 1) ; [L128] RET, EXPR property() [L128] CALL __VERIFIER_assert(property()) [L19] COND TRUE !(cond) VAL [isInitial=1, last_1_var_1_10=128, last_1_var_1_16=1, last_1_var_1_19=19/5, var_1_10=6174510521, var_1_11=-2147483649, var_1_12=1, var_1_15=63, var_1_16=-8589934591, var_1_17=-10737418241, var_1_18=-10737418241, var_1_19=7/5, var_1_1=1, var_1_20=7/5, var_1_21=0, var_1_2=0, var_1_3=0, var_1_4=71, var_1_7=63, var_1_8=1, var_1_9=0] [L19] reach_error() VAL [isInitial=1, last_1_var_1_10=128, last_1_var_1_16=1, last_1_var_1_19=19/5, var_1_10=6174510521, var_1_11=-2147483649, var_1_12=1, var_1_15=63, var_1_16=-8589934591, var_1_17=-10737418241, var_1_18=-10737418241, var_1_19=7/5, var_1_1=1, var_1_20=7/5, var_1_21=0, var_1_2=0, var_1_3=0, var_1_4=71, var_1_7=63, var_1_8=1, var_1_9=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 35 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.8s, OverallIterations: 1, TraceHistogramMax: 17, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=35occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 64 NumberOfCodeBlocks, 64 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2024-11-02 12:40:19,521 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8584a84e-ed7b-4a93-91f8-0a55fbc71371/bin/utaipan-verify-DbMuA5NWw2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8584a84e-ed7b-4a93-91f8-0a55fbc71371/bin/utaipan-verify-DbMuA5NWw2/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8584a84e-ed7b-4a93-91f8-0a55fbc71371/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_8584a84e-ed7b-4a93-91f8-0a55fbc71371/bin/utaipan-verify-DbMuA5NWw2/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8584a84e-ed7b-4a93-91f8-0a55fbc71371/bin/utaipan-verify-DbMuA5NWw2/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_codestructure_dependencies_file-11.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8584a84e-ed7b-4a93-91f8-0a55fbc71371/bin/utaipan-verify-DbMuA5NWw2/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8584a84e-ed7b-4a93-91f8-0a55fbc71371/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 9d1f41225cd95f570d39f7dc152bf434eeb5ae603d7cefe611440d61ef080184 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4fc63b2 [2024-11-02 12:40:22,141 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-02 12:40:22,255 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8584a84e-ed7b-4a93-91f8-0a55fbc71371/bin/utaipan-verify-DbMuA5NWw2/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2024-11-02 12:40:22,263 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-02 12:40:22,264 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-02 12:40:22,305 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-02 12:40:22,306 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-02 12:40:22,307 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-02 12:40:22,307 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-02 12:40:22,309 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-02 12:40:22,309 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-02 12:40:22,310 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-02 12:40:22,310 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-02 12:40:22,310 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-02 12:40:22,311 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-02 12:40:22,311 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-02 12:40:22,314 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-02 12:40:22,315 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-02 12:40:22,315 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-02 12:40:22,316 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-02 12:40:22,316 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-02 12:40:22,317 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-02 12:40:22,317 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-02 12:40:22,317 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-02 12:40:22,318 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-02 12:40:22,318 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-02 12:40:22,318 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-02 12:40:22,319 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-02 12:40:22,319 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-02 12:40:22,319 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-02 12:40:22,320 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-02 12:40:22,320 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-02 12:40:22,320 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-02 12:40:22,321 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-02 12:40:22,321 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-02 12:40:22,321 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-02 12:40:22,322 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-02 12:40:22,322 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-02 12:40:22,322 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-02 12:40:22,322 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2024-11-02 12:40:22,323 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-02 12:40:22,323 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-02 12:40:22,324 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-02 12:40:22,324 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-02 12:40:22,324 INFO L153 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_8584a84e-ed7b-4a93-91f8-0a55fbc71371/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8584a84e-ed7b-4a93-91f8-0a55fbc71371/bin/utaipan-verify-DbMuA5NWw2 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9d1f41225cd95f570d39f7dc152bf434eeb5ae603d7cefe611440d61ef080184 [2024-11-02 12:40:22,731 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-02 12:40:22,766 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-02 12:40:22,769 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-02 12:40:22,770 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-02 12:40:22,771 INFO L274 PluginConnector]: CDTParser initialized [2024-11-02 12:40:22,772 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8584a84e-ed7b-4a93-91f8-0a55fbc71371/bin/utaipan-verify-DbMuA5NWw2/../../sv-benchmarks/c/hardness-nfm22/hardness_codestructure_dependencies_file-11.i Unable to find full path for "g++" [2024-11-02 12:40:24,910 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-02 12:40:25,223 INFO L384 CDTParser]: Found 1 translation units. [2024-11-02 12:40:25,224 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8584a84e-ed7b-4a93-91f8-0a55fbc71371/sv-benchmarks/c/hardness-nfm22/hardness_codestructure_dependencies_file-11.i [2024-11-02 12:40:25,244 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8584a84e-ed7b-4a93-91f8-0a55fbc71371/bin/utaipan-verify-DbMuA5NWw2/data/66936da0b/69eabbb4ff804bb9b29297e8c907c180/FLAGd3df65afb [2024-11-02 12:40:25,277 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8584a84e-ed7b-4a93-91f8-0a55fbc71371/bin/utaipan-verify-DbMuA5NWw2/data/66936da0b/69eabbb4ff804bb9b29297e8c907c180 [2024-11-02 12:40:25,280 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-02 12:40:25,282 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-02 12:40:25,283 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-02 12:40:25,284 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-02 12:40:25,292 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-02 12:40:25,294 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 12:40:25" (1/1) ... [2024-11-02 12:40:25,297 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@602e9f38 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:40:25, skipping insertion in model container [2024-11-02 12:40:25,298 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 12:40:25" (1/1) ... [2024-11-02 12:40:25,358 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-02 12:40:25,622 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_8584a84e-ed7b-4a93-91f8-0a55fbc71371/sv-benchmarks/c/hardness-nfm22/hardness_codestructure_dependencies_file-11.i[919,932] [2024-11-02 12:40:25,720 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-02 12:40:25,745 INFO L200 MainTranslator]: Completed pre-run [2024-11-02 12:40:25,758 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_8584a84e-ed7b-4a93-91f8-0a55fbc71371/sv-benchmarks/c/hardness-nfm22/hardness_codestructure_dependencies_file-11.i[919,932] [2024-11-02 12:40:25,798 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-02 12:40:25,831 INFO L204 MainTranslator]: Completed translation [2024-11-02 12:40:25,831 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:40:25 WrapperNode [2024-11-02 12:40:25,832 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-02 12:40:25,833 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-02 12:40:25,833 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-02 12:40:25,834 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-02 12:40:25,842 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:40:25" (1/1) ... [2024-11-02 12:40:25,861 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:40:25" (1/1) ... [2024-11-02 12:40:25,917 INFO L138 Inliner]: procedures = 27, calls = 30, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 124 [2024-11-02 12:40:25,918 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-02 12:40:25,921 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-02 12:40:25,922 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-02 12:40:25,922 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-02 12:40:25,934 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:40:25" (1/1) ... [2024-11-02 12:40:25,934 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:40:25" (1/1) ... [2024-11-02 12:40:25,940 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:40:25" (1/1) ... [2024-11-02 12:40:25,942 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:40:25" (1/1) ... [2024-11-02 12:40:25,956 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:40:25" (1/1) ... [2024-11-02 12:40:25,964 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:40:25" (1/1) ... [2024-11-02 12:40:25,970 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:40:25" (1/1) ... [2024-11-02 12:40:25,971 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:40:25" (1/1) ... [2024-11-02 12:40:25,979 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-02 12:40:25,983 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-02 12:40:25,984 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-02 12:40:25,984 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-02 12:40:25,985 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:40:25" (1/1) ... [2024-11-02 12:40:26,000 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-02 12:40:26,016 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8584a84e-ed7b-4a93-91f8-0a55fbc71371/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 12:40:26,031 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8584a84e-ed7b-4a93-91f8-0a55fbc71371/bin/utaipan-verify-DbMuA5NWw2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-02 12:40:26,035 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8584a84e-ed7b-4a93-91f8-0a55fbc71371/bin/utaipan-verify-DbMuA5NWw2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-02 12:40:26,066 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-02 12:40:26,066 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2024-11-02 12:40:26,067 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-02 12:40:26,067 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-02 12:40:26,067 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-02 12:40:26,068 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-02 12:40:26,252 INFO L238 CfgBuilder]: Building ICFG [2024-11-02 12:40:26,257 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-02 12:40:26,715 INFO L? ?]: Removed 8 outVars from TransFormulas that were not future-live. [2024-11-02 12:40:26,715 INFO L287 CfgBuilder]: Performing block encoding [2024-11-02 12:40:26,730 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-02 12:40:26,730 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-02 12:40:26,730 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 12:40:26 BoogieIcfgContainer [2024-11-02 12:40:26,731 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-02 12:40:26,733 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-02 12:40:26,733 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-02 12:40:26,737 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-02 12:40:26,737 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 12:40:25" (1/3) ... [2024-11-02 12:40:26,738 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2348062b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 12:40:26, skipping insertion in model container [2024-11-02 12:40:26,738 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:40:25" (2/3) ... [2024-11-02 12:40:26,739 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2348062b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 12:40:26, skipping insertion in model container [2024-11-02 12:40:26,739 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 12:40:26" (3/3) ... [2024-11-02 12:40:26,740 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_codestructure_dependencies_file-11.i [2024-11-02 12:40:26,761 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-02 12:40:26,762 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-02 12:40:26,898 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-02 12:40:26,913 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;@536aa9f6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-02 12:40:26,917 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-02 12:40:26,924 INFO L276 IsEmpty]: Start isEmpty. Operand has 56 states, 36 states have (on average 1.4166666666666667) internal successors, (51), 37 states have internal predecessors, (51), 17 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2024-11-02 12:40:26,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2024-11-02 12:40:26,950 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:40:26,950 INFO L215 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:40:26,951 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:40:26,959 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:40:26,960 INFO L85 PathProgramCache]: Analyzing trace with hash 786963647, now seen corresponding path program 1 times [2024-11-02 12:40:26,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-02 12:40:26,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1858218718] [2024-11-02 12:40:26,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:40:26,979 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-02 12:40:26,979 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8584a84e-ed7b-4a93-91f8-0a55fbc71371/bin/utaipan-verify-DbMuA5NWw2/mathsat [2024-11-02 12:40:26,983 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8584a84e-ed7b-4a93-91f8-0a55fbc71371/bin/utaipan-verify-DbMuA5NWw2/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-02 12:40:27,006 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8584a84e-ed7b-4a93-91f8-0a55fbc71371/bin/utaipan-verify-DbMuA5NWw2/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2024-11-02 12:40:27,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:40:27,292 INFO L255 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-02 12:40:27,312 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 12:40:27,393 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2024-11-02 12:40:27,393 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-02 12:40:27,394 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-02 12:40:27,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1858218718] [2024-11-02 12:40:27,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1858218718] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:40:27,396 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:40:27,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-02 12:40:27,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114515007] [2024-11-02 12:40:27,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:40:27,405 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-02 12:40:27,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-02 12:40:27,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-02 12:40:27,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-02 12:40:27,459 INFO L87 Difference]: Start difference. First operand has 56 states, 36 states have (on average 1.4166666666666667) internal successors, (51), 37 states have internal predecessors, (51), 17 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) Second operand has 2 states, 2 states have (on average 13.5) internal successors, (27), 2 states have internal predecessors, (27), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2024-11-02 12:40:27,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:40:27,550 INFO L93 Difference]: Finished difference Result 105 states and 181 transitions. [2024-11-02 12:40:27,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-02 12:40:27,552 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 13.5) internal successors, (27), 2 states have internal predecessors, (27), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 109 [2024-11-02 12:40:27,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:40:27,564 INFO L225 Difference]: With dead ends: 105 [2024-11-02 12:40:27,565 INFO L226 Difference]: Without dead ends: 52 [2024-11-02 12:40:27,571 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 108 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 12:40:27,577 INFO L432 NwaCegarLoop]: 77 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-02 12:40:27,580 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-02 12:40:27,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2024-11-02 12:40:27,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2024-11-02 12:40:27,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 33 states have (on average 1.303030303030303) internal successors, (43), 33 states have internal predecessors, (43), 17 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2024-11-02 12:40:27,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 77 transitions. [2024-11-02 12:40:27,655 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 77 transitions. Word has length 109 [2024-11-02 12:40:27,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:40:27,658 INFO L471 AbstractCegarLoop]: Abstraction has 52 states and 77 transitions. [2024-11-02 12:40:27,659 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 13.5) internal successors, (27), 2 states have internal predecessors, (27), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2024-11-02 12:40:27,659 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 77 transitions. [2024-11-02 12:40:27,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2024-11-02 12:40:27,668 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:40:27,668 INFO L215 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:40:27,675 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8584a84e-ed7b-4a93-91f8-0a55fbc71371/bin/utaipan-verify-DbMuA5NWw2/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2024-11-02 12:40:27,869 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8584a84e-ed7b-4a93-91f8-0a55fbc71371/bin/utaipan-verify-DbMuA5NWw2/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-02 12:40:27,872 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:40:27,873 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:40:27,873 INFO L85 PathProgramCache]: Analyzing trace with hash 106905277, now seen corresponding path program 1 times [2024-11-02 12:40:27,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-02 12:40:27,875 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [903101226] [2024-11-02 12:40:27,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:40:27,876 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-02 12:40:27,876 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8584a84e-ed7b-4a93-91f8-0a55fbc71371/bin/utaipan-verify-DbMuA5NWw2/mathsat [2024-11-02 12:40:27,879 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8584a84e-ed7b-4a93-91f8-0a55fbc71371/bin/utaipan-verify-DbMuA5NWw2/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-02 12:40:27,881 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8584a84e-ed7b-4a93-91f8-0a55fbc71371/bin/utaipan-verify-DbMuA5NWw2/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2024-11-02 12:40:28,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:40:28,096 INFO L255 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-02 12:40:28,102 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 12:40:29,137 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2024-11-02 12:40:29,137 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-02 12:40:29,138 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-02 12:40:29,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [903101226] [2024-11-02 12:40:29,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [903101226] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:40:29,139 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:40:29,139 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-02 12:40:29,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067608172] [2024-11-02 12:40:29,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:40:29,141 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-02 12:40:29,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-02 12:40:29,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-02 12:40:29,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-02 12:40:29,143 INFO L87 Difference]: Start difference. First operand 52 states and 77 transitions. Second operand has 4 states, 4 states have (on average 6.75) internal successors, (27), 3 states have internal predecessors, (27), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2024-11-02 12:40:29,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:40:29,440 INFO L93 Difference]: Finished difference Result 151 states and 226 transitions. [2024-11-02 12:40:29,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-02 12:40:29,443 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 3 states have internal predecessors, (27), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 109 [2024-11-02 12:40:29,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:40:29,446 INFO L225 Difference]: With dead ends: 151 [2024-11-02 12:40:29,446 INFO L226 Difference]: Without dead ends: 102 [2024-11-02 12:40:29,447 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-02 12:40:29,448 INFO L432 NwaCegarLoop]: 72 mSDtfsCounter, 47 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 206 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-02 12:40:29,449 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 206 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-02 12:40:29,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2024-11-02 12:40:29,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 85. [2024-11-02 12:40:29,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 48 states have (on average 1.2083333333333333) internal successors, (58), 48 states have internal predecessors, (58), 34 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2024-11-02 12:40:29,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 126 transitions. [2024-11-02 12:40:29,477 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 126 transitions. Word has length 109 [2024-11-02 12:40:29,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:40:29,478 INFO L471 AbstractCegarLoop]: Abstraction has 85 states and 126 transitions. [2024-11-02 12:40:29,478 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 3 states have internal predecessors, (27), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2024-11-02 12:40:29,478 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 126 transitions. [2024-11-02 12:40:29,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2024-11-02 12:40:29,480 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:40:29,480 INFO L215 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:40:29,486 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8584a84e-ed7b-4a93-91f8-0a55fbc71371/bin/utaipan-verify-DbMuA5NWw2/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2024-11-02 12:40:29,681 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8584a84e-ed7b-4a93-91f8-0a55fbc71371/bin/utaipan-verify-DbMuA5NWw2/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-02 12:40:29,682 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:40:29,682 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:40:29,683 INFO L85 PathProgramCache]: Analyzing trace with hash 952564273, now seen corresponding path program 1 times [2024-11-02 12:40:29,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-02 12:40:29,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1713422042] [2024-11-02 12:40:29,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:40:29,684 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-02 12:40:29,684 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8584a84e-ed7b-4a93-91f8-0a55fbc71371/bin/utaipan-verify-DbMuA5NWw2/mathsat [2024-11-02 12:40:29,687 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8584a84e-ed7b-4a93-91f8-0a55fbc71371/bin/utaipan-verify-DbMuA5NWw2/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-02 12:40:29,689 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8584a84e-ed7b-4a93-91f8-0a55fbc71371/bin/utaipan-verify-DbMuA5NWw2/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2024-11-02 12:40:29,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:40:29,865 INFO L255 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-02 12:40:29,870 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 12:40:30,318 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2024-11-02 12:40:30,319 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-02 12:40:30,320 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-02 12:40:30,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1713422042] [2024-11-02 12:40:30,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1713422042] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:40:30,323 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:40:30,323 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-02 12:40:30,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568656849] [2024-11-02 12:40:30,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:40:30,326 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-02 12:40:30,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-02 12:40:30,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-02 12:40:30,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-02 12:40:30,328 INFO L87 Difference]: Start difference. First operand 85 states and 126 transitions. Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2024-11-02 12:40:30,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:40:30,668 INFO L93 Difference]: Finished difference Result 138 states and 206 transitions. [2024-11-02 12:40:30,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-02 12:40:30,669 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 110 [2024-11-02 12:40:30,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:40:30,671 INFO L225 Difference]: With dead ends: 138 [2024-11-02 12:40:30,672 INFO L226 Difference]: Without dead ends: 89 [2024-11-02 12:40:30,672 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-02 12:40:30,674 INFO L432 NwaCegarLoop]: 122 mSDtfsCounter, 58 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 175 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-02 12:40:30,674 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 175 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-02 12:40:30,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2024-11-02 12:40:30,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 85. [2024-11-02 12:40:30,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 48 states have (on average 1.1666666666666667) internal successors, (56), 48 states have internal predecessors, (56), 34 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2024-11-02 12:40:30,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 124 transitions. [2024-11-02 12:40:30,697 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 124 transitions. Word has length 110 [2024-11-02 12:40:30,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:40:30,698 INFO L471 AbstractCegarLoop]: Abstraction has 85 states and 124 transitions. [2024-11-02 12:40:30,698 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2024-11-02 12:40:30,698 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 124 transitions. [2024-11-02 12:40:30,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2024-11-02 12:40:30,700 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:40:30,700 INFO L215 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:40:30,706 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8584a84e-ed7b-4a93-91f8-0a55fbc71371/bin/utaipan-verify-DbMuA5NWw2/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2024-11-02 12:40:30,904 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8584a84e-ed7b-4a93-91f8-0a55fbc71371/bin/utaipan-verify-DbMuA5NWw2/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-02 12:40:30,905 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:40:30,906 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:40:30,906 INFO L85 PathProgramCache]: Analyzing trace with hash -2033102776, now seen corresponding path program 1 times [2024-11-02 12:40:30,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-02 12:40:30,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2071748127] [2024-11-02 12:40:30,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:40:30,907 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-02 12:40:30,907 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8584a84e-ed7b-4a93-91f8-0a55fbc71371/bin/utaipan-verify-DbMuA5NWw2/mathsat [2024-11-02 12:40:30,911 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8584a84e-ed7b-4a93-91f8-0a55fbc71371/bin/utaipan-verify-DbMuA5NWw2/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-02 12:40:30,912 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8584a84e-ed7b-4a93-91f8-0a55fbc71371/bin/utaipan-verify-DbMuA5NWw2/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2024-11-02 12:40:31,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:40:31,093 INFO L255 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-02 12:40:31,101 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 12:40:31,379 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 178 proven. 39 refuted. 0 times theorem prover too weak. 327 trivial. 0 not checked. [2024-11-02 12:40:31,379 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-02 12:40:31,675 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 9 proven. 39 refuted. 0 times theorem prover too weak. 496 trivial. 0 not checked. [2024-11-02 12:40:31,676 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-02 12:40:31,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2071748127] [2024-11-02 12:40:31,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2071748127] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-02 12:40:31,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1687364562] [2024-11-02 12:40:31,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:40:31,693 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-02 12:40:31,694 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8584a84e-ed7b-4a93-91f8-0a55fbc71371/bin/utaipan-verify-DbMuA5NWw2/cvc4 [2024-11-02 12:40:31,697 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8584a84e-ed7b-4a93-91f8-0a55fbc71371/bin/utaipan-verify-DbMuA5NWw2/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-02 12:40:31,700 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8584a84e-ed7b-4a93-91f8-0a55fbc71371/bin/utaipan-verify-DbMuA5NWw2/cvc4 --incremental --print-success --lang smt (6)] Waiting until timeout for monitored process [2024-11-02 12:40:32,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:40:32,054 INFO L255 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-02 12:40:32,057 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 12:40:32,084 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2024-11-02 12:40:32,085 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-02 12:40:32,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1687364562] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:40:32,086 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-02 12:40:32,086 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6, 6] total 10 [2024-11-02 12:40:32,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448494810] [2024-11-02 12:40:32,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:40:32,087 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-02 12:40:32,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-02 12:40:32,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-02 12:40:32,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-11-02 12:40:32,089 INFO L87 Difference]: Start difference. First operand 85 states and 124 transitions. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2024-11-02 12:40:32,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:40:32,198 INFO L93 Difference]: Finished difference Result 178 states and 260 transitions. [2024-11-02 12:40:32,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-02 12:40:32,200 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 111 [2024-11-02 12:40:32,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:40:32,205 INFO L225 Difference]: With dead ends: 178 [2024-11-02 12:40:32,207 INFO L226 Difference]: Without dead ends: 129 [2024-11-02 12:40:32,208 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 330 GetRequests, 321 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-11-02 12:40:32,211 INFO L432 NwaCegarLoop]: 128 mSDtfsCounter, 62 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 196 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-02 12:40:32,211 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 196 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-02 12:40:32,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2024-11-02 12:40:32,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 86. [2024-11-02 12:40:32,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 49 states have (on average 1.163265306122449) internal successors, (57), 49 states have internal predecessors, (57), 34 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2024-11-02 12:40:32,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 125 transitions. [2024-11-02 12:40:32,255 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 125 transitions. Word has length 111 [2024-11-02 12:40:32,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:40:32,256 INFO L471 AbstractCegarLoop]: Abstraction has 86 states and 125 transitions. [2024-11-02 12:40:32,256 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2024-11-02 12:40:32,256 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 125 transitions. [2024-11-02 12:40:32,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2024-11-02 12:40:32,261 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:40:32,262 INFO L215 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:40:32,267 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8584a84e-ed7b-4a93-91f8-0a55fbc71371/bin/utaipan-verify-DbMuA5NWw2/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Ended with exit code 0 [2024-11-02 12:40:32,465 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8584a84e-ed7b-4a93-91f8-0a55fbc71371/bin/utaipan-verify-DbMuA5NWw2/cvc4 --incremental --print-success --lang smt (6)] Forceful destruction successful, exit code 0 [2024-11-02 12:40:32,662 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8584a84e-ed7b-4a93-91f8-0a55fbc71371/bin/utaipan-verify-DbMuA5NWw2/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8584a84e-ed7b-4a93-91f8-0a55fbc71371/bin/utaipan-verify-DbMuA5NWw2/cvc4 --incremental --print-success --lang smt [2024-11-02 12:40:32,663 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:40:32,663 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:40:32,664 INFO L85 PathProgramCache]: Analyzing trace with hash -2031255734, now seen corresponding path program 1 times [2024-11-02 12:40:32,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-02 12:40:32,664 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [97598370] [2024-11-02 12:40:32,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:40:32,665 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-02 12:40:32,665 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8584a84e-ed7b-4a93-91f8-0a55fbc71371/bin/utaipan-verify-DbMuA5NWw2/mathsat [2024-11-02 12:40:32,668 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8584a84e-ed7b-4a93-91f8-0a55fbc71371/bin/utaipan-verify-DbMuA5NWw2/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-02 12:40:32,669 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8584a84e-ed7b-4a93-91f8-0a55fbc71371/bin/utaipan-verify-DbMuA5NWw2/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2024-11-02 12:40:32,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:40:32,819 INFO L255 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-02 12:40:32,822 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 12:40:33,082 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 178 proven. 39 refuted. 0 times theorem prover too weak. 327 trivial. 0 not checked. [2024-11-02 12:40:33,082 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-02 12:40:33,329 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 9 proven. 39 refuted. 0 times theorem prover too weak. 496 trivial. 0 not checked. [2024-11-02 12:40:33,329 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-02 12:40:33,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [97598370] [2024-11-02 12:40:33,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [97598370] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-02 12:40:33,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [470964914] [2024-11-02 12:40:33,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:40:33,330 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-02 12:40:33,331 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8584a84e-ed7b-4a93-91f8-0a55fbc71371/bin/utaipan-verify-DbMuA5NWw2/cvc4 [2024-11-02 12:40:33,333 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8584a84e-ed7b-4a93-91f8-0a55fbc71371/bin/utaipan-verify-DbMuA5NWw2/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-02 12:40:33,335 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8584a84e-ed7b-4a93-91f8-0a55fbc71371/bin/utaipan-verify-DbMuA5NWw2/cvc4 --incremental --print-success --lang smt (8)] Waiting until timeout for monitored process [2024-11-02 12:40:33,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:40:33,960 INFO L255 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-02 12:40:33,963 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 12:40:34,166 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 178 proven. 39 refuted. 0 times theorem prover too weak. 327 trivial. 0 not checked. [2024-11-02 12:40:34,166 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-02 12:40:34,373 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 9 proven. 39 refuted. 0 times theorem prover too weak. 496 trivial. 0 not checked. [2024-11-02 12:40:34,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [470964914] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-02 12:40:34,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1928210930] [2024-11-02 12:40:34,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:40:34,374 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 12:40:34,375 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8584a84e-ed7b-4a93-91f8-0a55fbc71371/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 12:40:34,377 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8584a84e-ed7b-4a93-91f8-0a55fbc71371/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-02 12:40:34,379 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8584a84e-ed7b-4a93-91f8-0a55fbc71371/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-02 12:40:34,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:40:34,492 INFO L255 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-02 12:40:34,496 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 12:40:34,698 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 178 proven. 39 refuted. 0 times theorem prover too weak. 327 trivial. 0 not checked. [2024-11-02 12:40:34,698 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-02 12:40:34,879 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 9 proven. 39 refuted. 0 times theorem prover too weak. 496 trivial. 0 not checked. [2024-11-02 12:40:34,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1928210930] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-02 12:40:34,879 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2024-11-02 12:40:34,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6, 6, 6, 6] total 9 [2024-11-02 12:40:34,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83206399] [2024-11-02 12:40:34,880 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2024-11-02 12:40:34,881 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-02 12:40:34,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-02 12:40:34,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-02 12:40:34,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-11-02 12:40:34,883 INFO L87 Difference]: Start difference. First operand 86 states and 125 transitions. Second operand has 9 states, 9 states have (on average 4.666666666666667) internal successors, (42), 9 states have internal predecessors, (42), 2 states have call successors, (30), 2 states have call predecessors, (30), 4 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2024-11-02 12:40:35,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:40:35,295 INFO L93 Difference]: Finished difference Result 151 states and 211 transitions. [2024-11-02 12:40:35,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-02 12:40:35,298 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.666666666666667) internal successors, (42), 9 states have internal predecessors, (42), 2 states have call successors, (30), 2 states have call predecessors, (30), 4 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) Word has length 111 [2024-11-02 12:40:35,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:40:35,300 INFO L225 Difference]: With dead ends: 151 [2024-11-02 12:40:35,300 INFO L226 Difference]: Without dead ends: 101 [2024-11-02 12:40:35,301 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 668 GetRequests, 651 SyntacticMatches, 3 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=87, Invalid=153, Unknown=0, NotChecked=0, Total=240 [2024-11-02 12:40:35,302 INFO L432 NwaCegarLoop]: 48 mSDtfsCounter, 70 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 109 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-02 12:40:35,303 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 109 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-02 12:40:35,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2024-11-02 12:40:35,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 93. [2024-11-02 12:40:35,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 54 states have (on average 1.1111111111111112) internal successors, (60), 54 states have internal predecessors, (60), 34 states have call successors, (34), 4 states have call predecessors, (34), 4 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2024-11-02 12:40:35,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 128 transitions. [2024-11-02 12:40:35,336 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 128 transitions. Word has length 111 [2024-11-02 12:40:35,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:40:35,337 INFO L471 AbstractCegarLoop]: Abstraction has 93 states and 128 transitions. [2024-11-02 12:40:35,338 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.666666666666667) internal successors, (42), 9 states have internal predecessors, (42), 2 states have call successors, (30), 2 states have call predecessors, (30), 4 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2024-11-02 12:40:35,338 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 128 transitions. [2024-11-02 12:40:35,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2024-11-02 12:40:35,340 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:40:35,340 INFO L215 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:40:35,349 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8584a84e-ed7b-4a93-91f8-0a55fbc71371/bin/utaipan-verify-DbMuA5NWw2/cvc4 --incremental --print-success --lang smt (8)] Ended with exit code 0 [2024-11-02 12:40:35,544 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8584a84e-ed7b-4a93-91f8-0a55fbc71371/bin/utaipan-verify-DbMuA5NWw2/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2024-11-02 12:40:35,756 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8584a84e-ed7b-4a93-91f8-0a55fbc71371/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-02 12:40:35,941 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8584a84e-ed7b-4a93-91f8-0a55fbc71371/bin/utaipan-verify-DbMuA5NWw2/cvc4 --incremental --print-success --lang smt,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8584a84e-ed7b-4a93-91f8-0a55fbc71371/bin/utaipan-verify-DbMuA5NWw2/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8584a84e-ed7b-4a93-91f8-0a55fbc71371/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 12:40:35,942 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:40:35,942 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:40:35,942 INFO L85 PathProgramCache]: Analyzing trace with hash 877399859, now seen corresponding path program 1 times [2024-11-02 12:40:35,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-02 12:40:35,943 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1822830621] [2024-11-02 12:40:35,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:40:35,944 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-02 12:40:35,944 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8584a84e-ed7b-4a93-91f8-0a55fbc71371/bin/utaipan-verify-DbMuA5NWw2/mathsat [2024-11-02 12:40:35,947 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8584a84e-ed7b-4a93-91f8-0a55fbc71371/bin/utaipan-verify-DbMuA5NWw2/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-02 12:40:35,949 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8584a84e-ed7b-4a93-91f8-0a55fbc71371/bin/utaipan-verify-DbMuA5NWw2/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2024-11-02 12:40:36,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:40:36,100 INFO L255 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-02 12:40:36,106 INFO L278 TraceCheckSpWp]: Computing forward predicates...