./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_codestructure_normal_file-68.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cf1a7837 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_db7d24b8-f95e-4f5f-aecc-01b56396deae/bin/utaipan-verify-NcY6lQBIFX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db7d24b8-f95e-4f5f-aecc-01b56396deae/bin/utaipan-verify-NcY6lQBIFX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db7d24b8-f95e-4f5f-aecc-01b56396deae/bin/utaipan-verify-NcY6lQBIFX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db7d24b8-f95e-4f5f-aecc-01b56396deae/bin/utaipan-verify-NcY6lQBIFX/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_codestructure_normal_file-68.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db7d24b8-f95e-4f5f-aecc-01b56396deae/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db7d24b8-f95e-4f5f-aecc-01b56396deae/bin/utaipan-verify-NcY6lQBIFX --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 bdb04820b0552f240cac64f9b4eeb39d6636c8d16d50737ca938c89bab3fc009 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 00:44:36,312 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 00:44:36,431 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db7d24b8-f95e-4f5f-aecc-01b56396deae/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-11-12 00:44:36,438 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 00:44:36,439 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 00:44:36,488 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 00:44:36,489 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 00:44:36,490 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 00:44:36,491 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 00:44:36,496 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 00:44:36,497 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-12 00:44:36,497 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-12 00:44:36,498 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-12 00:44:36,500 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-12 00:44:36,500 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-12 00:44:36,501 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-12 00:44:36,501 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-12 00:44:36,501 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-12 00:44:36,503 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-12 00:44:36,504 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-12 00:44:36,504 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-12 00:44:36,505 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-12 00:44:36,506 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 00:44:36,507 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-12 00:44:36,507 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 00:44:36,508 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 00:44:36,508 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 00:44:36,509 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 00:44:36,509 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-12 00:44:36,518 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 00:44:36,520 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-12 00:44:36,520 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 00:44:36,520 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 00:44:36,521 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 00:44:36,521 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 00:44:36,521 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 00:44:36,522 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 00:44:36,522 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 00:44:36,522 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 00:44:36,523 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-12 00:44:36,523 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-12 00:44:36,523 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 00:44:36,524 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-12 00:44:36,524 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-12 00:44:36,525 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 00:44:36,525 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_db7d24b8-f95e-4f5f-aecc-01b56396deae/bin/utaipan-verify-NcY6lQBIFX/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db7d24b8-f95e-4f5f-aecc-01b56396deae/bin/utaipan-verify-NcY6lQBIFX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bdb04820b0552f240cac64f9b4eeb39d6636c8d16d50737ca938c89bab3fc009 [2023-11-12 00:44:36,801 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 00:44:36,849 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 00:44:36,853 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 00:44:36,855 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 00:44:36,872 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 00:44:36,874 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db7d24b8-f95e-4f5f-aecc-01b56396deae/bin/utaipan-verify-NcY6lQBIFX/../../sv-benchmarks/c/hardness-nfm22/hardness_codestructure_normal_file-68.i [2023-11-12 00:44:40,041 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 00:44:40,354 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 00:44:40,355 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db7d24b8-f95e-4f5f-aecc-01b56396deae/sv-benchmarks/c/hardness-nfm22/hardness_codestructure_normal_file-68.i [2023-11-12 00:44:40,367 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db7d24b8-f95e-4f5f-aecc-01b56396deae/bin/utaipan-verify-NcY6lQBIFX/data/1d9dc6345/55a204f6c9034366b3199736eb6d3732/FLAGa42585c64 [2023-11-12 00:44:40,418 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db7d24b8-f95e-4f5f-aecc-01b56396deae/bin/utaipan-verify-NcY6lQBIFX/data/1d9dc6345/55a204f6c9034366b3199736eb6d3732 [2023-11-12 00:44:40,424 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 00:44:40,426 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 00:44:40,430 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 00:44:40,430 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 00:44:40,436 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 00:44:40,437 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:44:40" (1/1) ... [2023-11-12 00:44:40,438 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@53fc1220 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:44:40, skipping insertion in model container [2023-11-12 00:44:40,438 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:44:40" (1/1) ... [2023-11-12 00:44:40,496 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 00:44:40,648 WARN L240 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_db7d24b8-f95e-4f5f-aecc-01b56396deae/sv-benchmarks/c/hardness-nfm22/hardness_codestructure_normal_file-68.i[913,926] [2023-11-12 00:44:40,702 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:44:40,715 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 00:44:40,729 WARN L240 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_db7d24b8-f95e-4f5f-aecc-01b56396deae/sv-benchmarks/c/hardness-nfm22/hardness_codestructure_normal_file-68.i[913,926] [2023-11-12 00:44:40,760 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:44:40,779 INFO L206 MainTranslator]: Completed translation [2023-11-12 00:44:40,780 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:44:40 WrapperNode [2023-11-12 00:44:40,780 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 00:44:40,781 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 00:44:40,781 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 00:44:40,782 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 00:44:40,790 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:44:40" (1/1) ... [2023-11-12 00:44:40,802 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:44:40" (1/1) ... [2023-11-12 00:44:40,854 INFO L138 Inliner]: procedures = 26, calls = 29, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 143 [2023-11-12 00:44:40,854 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 00:44:40,855 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 00:44:40,855 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 00:44:40,855 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 00:44:40,866 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:44:40" (1/1) ... [2023-11-12 00:44:40,866 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:44:40" (1/1) ... [2023-11-12 00:44:40,870 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:44:40" (1/1) ... [2023-11-12 00:44:40,871 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:44:40" (1/1) ... [2023-11-12 00:44:40,883 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:44:40" (1/1) ... [2023-11-12 00:44:40,887 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:44:40" (1/1) ... [2023-11-12 00:44:40,892 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:44:40" (1/1) ... [2023-11-12 00:44:40,895 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:44:40" (1/1) ... [2023-11-12 00:44:40,901 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 00:44:40,902 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 00:44:40,902 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 00:44:40,903 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 00:44:40,904 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:44:40" (1/1) ... [2023-11-12 00:44:40,911 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 00:44:40,929 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db7d24b8-f95e-4f5f-aecc-01b56396deae/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:44:40,956 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db7d24b8-f95e-4f5f-aecc-01b56396deae/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 00:44:40,967 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db7d24b8-f95e-4f5f-aecc-01b56396deae/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 00:44:41,004 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 00:44:41,004 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-12 00:44:41,004 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-12 00:44:41,005 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 00:44:41,005 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 00:44:41,005 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 00:44:41,084 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 00:44:41,087 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 00:44:41,586 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 00:44:41,900 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 00:44:41,901 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-12 00:44:41,904 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:44:41 BoogieIcfgContainer [2023-11-12 00:44:41,904 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 00:44:41,907 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 00:44:41,907 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 00:44:41,911 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 00:44:41,911 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 12:44:40" (1/3) ... [2023-11-12 00:44:41,913 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43d68aef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:44:41, skipping insertion in model container [2023-11-12 00:44:41,913 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:44:40" (2/3) ... [2023-11-12 00:44:41,914 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43d68aef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:44:41, skipping insertion in model container [2023-11-12 00:44:41,915 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:44:41" (3/3) ... [2023-11-12 00:44:41,916 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_codestructure_normal_file-68.i [2023-11-12 00:44:41,938 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 00:44:41,938 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-12 00:44:41,997 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 00:44:42,005 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=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;@3e99e0d1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-12 00:44:42,005 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-12 00:44:42,011 INFO L276 IsEmpty]: Start isEmpty. Operand has 33 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 15 states have internal predecessors, (17), 16 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2023-11-12 00:44:42,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-11-12 00:44:42,025 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:44:42,026 INFO L195 NwaCegarLoop]: trace histogram [16, 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] [2023-11-12 00:44:42,027 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:44:42,034 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:44:42,035 INFO L85 PathProgramCache]: Analyzing trace with hash 2121005096, now seen corresponding path program 1 times [2023-11-12 00:44:42,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:44:42,047 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [316980473] [2023-11-12 00:44:42,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:44:42,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:44:42,248 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 00:44:42,248 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1548769892] [2023-11-12 00:44:42,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:44:42,249 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:44:42,249 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db7d24b8-f95e-4f5f-aecc-01b56396deae/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:44:42,254 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db7d24b8-f95e-4f5f-aecc-01b56396deae/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 00:44:42,257 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db7d24b8-f95e-4f5f-aecc-01b56396deae/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-12 00:44:42,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-12 00:44:42,556 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-12 00:44:42,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-12 00:44:42,688 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-11-12 00:44:42,691 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-12 00:44:42,692 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-12 00:44:42,707 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db7d24b8-f95e-4f5f-aecc-01b56396deae/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-12 00:44:42,901 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db7d24b8-f95e-4f5f-aecc-01b56396deae/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-12 00:44:42,907 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-11-12 00:44:42,911 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-11-12 00:44:43,002 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 12:44:43 BoogieIcfgContainer [2023-11-12 00:44:43,003 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-12 00:44:43,003 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-12 00:44:43,004 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-12 00:44:43,004 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-12 00:44:43,004 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:44:41" (3/4) ... [2023-11-12 00:44:43,007 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-12 00:44:43,009 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-12 00:44:43,010 INFO L158 Benchmark]: Toolchain (without parser) took 2583.37ms. Allocated memory was 148.9MB in the beginning and 180.4MB in the end (delta: 31.5MB). Free memory was 119.9MB in the beginning and 132.4MB in the end (delta: -12.6MB). Peak memory consumption was 18.4MB. Max. memory is 16.1GB. [2023-11-12 00:44:43,011 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 123.7MB. Free memory is still 97.6MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-12 00:44:43,011 INFO L158 Benchmark]: CACSL2BoogieTranslator took 350.50ms. Allocated memory is still 148.9MB. Free memory was 119.7MB in the beginning and 107.7MB in the end (delta: 12.0MB). Peak memory consumption was 12.8MB. Max. memory is 16.1GB. [2023-11-12 00:44:43,012 INFO L158 Benchmark]: Boogie Procedure Inliner took 73.26ms. Allocated memory is still 148.9MB. Free memory was 107.7MB in the beginning and 104.1MB in the end (delta: 3.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-12 00:44:43,013 INFO L158 Benchmark]: Boogie Preprocessor took 46.24ms. Allocated memory is still 148.9MB. Free memory was 104.1MB in the beginning and 102.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-12 00:44:43,013 INFO L158 Benchmark]: RCFGBuilder took 1001.81ms. Allocated memory is still 148.9MB. Free memory was 102.1MB in the beginning and 78.2MB in the end (delta: 23.9MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2023-11-12 00:44:43,014 INFO L158 Benchmark]: TraceAbstraction took 1096.07ms. Allocated memory was 148.9MB in the beginning and 180.4MB in the end (delta: 31.5MB). Free memory was 77.7MB in the beginning and 133.5MB in the end (delta: -55.8MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-12 00:44:43,015 INFO L158 Benchmark]: Witness Printer took 5.36ms. Allocated memory is still 180.4MB. Free memory was 133.5MB in the beginning and 132.4MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-12 00:44:43,018 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30ms. Allocated memory is still 123.7MB. Free memory is still 97.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 350.50ms. Allocated memory is still 148.9MB. Free memory was 119.7MB in the beginning and 107.7MB in the end (delta: 12.0MB). Peak memory consumption was 12.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 73.26ms. Allocated memory is still 148.9MB. Free memory was 107.7MB in the beginning and 104.1MB in the end (delta: 3.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 46.24ms. Allocated memory is still 148.9MB. Free memory was 104.1MB in the beginning and 102.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 1001.81ms. Allocated memory is still 148.9MB. Free memory was 102.1MB in the beginning and 78.2MB in the end (delta: 23.9MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * TraceAbstraction took 1096.07ms. Allocated memory was 148.9MB in the beginning and 180.4MB in the end (delta: 31.5MB). Free memory was 77.7MB in the beginning and 133.5MB in the end (delta: -55.8MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 5.36ms. Allocated memory is still 180.4MB. Free memory was 133.5MB in the beginning and 132.4MB in the end (delta: 1.0MB). 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 60, overapproximation of someBinaryFLOATComparisonOperation at line 111, overapproximation of bitwiseOr at line 41. Possible FailurePath: [L21] unsigned char isInitial = 0; [L22] unsigned char var_1_1 = 1; [L23] unsigned char var_1_2 = 10; [L24] unsigned char var_1_3 = 25; [L25] unsigned char var_1_4 = 16; [L26] unsigned char var_1_5 = 0; [L27] unsigned char var_1_6 = 0; [L28] unsigned char var_1_7 = 1; [L29] unsigned char var_1_8 = 32; [L30] double var_1_9 = 4.6; [L31] double var_1_10 = 9.25; [L32] double var_1_11 = 1.25; [L33] unsigned char var_1_12 = 100; [L34] unsigned char var_1_13 = 64; [L35] unsigned char var_1_14 = 0; [L36] float var_1_15 = 7.5; [L37] signed long int var_1_16 = 0; [L115] isInitial = 1 [L116] FCALL initially() [L117] COND TRUE 1 [L118] FCALL updateLastVariables() [L119] CALL updateVariables() [L83] var_1_2 = __VERIFIER_nondet_uchar() [L84] CALL assume_abort_if_not(var_1_2 >= 0) VAL [\old(cond)=1, isInitial=1, var_1_10=37/4, var_1_11=5/4, var_1_12=100, var_1_13=64, var_1_14=0, var_1_15=15/2, var_1_16=0, var_1_1=1, var_1_3=25, var_1_4=16, var_1_5=0, var_1_6=0, var_1_7=1, var_1_8=32, var_1_9=23/5] [L20] COND FALSE !(!cond) [L84] RET assume_abort_if_not(var_1_2 >= 0) VAL [isInitial=1, var_1_10=37/4, var_1_11=5/4, var_1_12=100, var_1_13=64, var_1_14=0, var_1_15=15/2, var_1_16=0, var_1_1=1, var_1_3=25, var_1_4=16, var_1_5=0, var_1_6=0, var_1_7=1, var_1_8=32, var_1_9=23/5] [L85] CALL assume_abort_if_not(var_1_2 <= 255) VAL [\old(cond)=1, isInitial=1, var_1_10=37/4, var_1_11=5/4, var_1_12=100, var_1_13=64, var_1_14=0, var_1_15=15/2, var_1_16=0, var_1_1=1, var_1_3=25, var_1_4=16, var_1_5=0, var_1_6=0, var_1_7=1, var_1_8=32, var_1_9=23/5] [L20] COND FALSE !(!cond) [L85] RET assume_abort_if_not(var_1_2 <= 255) VAL [isInitial=1, var_1_10=37/4, var_1_11=5/4, var_1_12=100, var_1_13=64, var_1_14=0, var_1_15=15/2, var_1_16=0, var_1_1=1, var_1_3=25, var_1_4=16, var_1_5=0, var_1_6=0, var_1_7=1, var_1_8=32, var_1_9=23/5] [L86] var_1_3 = __VERIFIER_nondet_uchar() [L87] CALL assume_abort_if_not(var_1_3 >= 0) VAL [\old(cond)=1, isInitial=1, var_1_10=37/4, var_1_11=5/4, var_1_12=100, var_1_13=64, var_1_14=0, var_1_15=15/2, var_1_16=0, var_1_1=1, var_1_3=1, var_1_4=16, var_1_5=0, var_1_6=0, var_1_7=1, var_1_8=32, var_1_9=23/5] [L20] COND FALSE !(!cond) [L87] RET assume_abort_if_not(var_1_3 >= 0) VAL [isInitial=1, var_1_10=37/4, var_1_11=5/4, var_1_12=100, var_1_13=64, var_1_14=0, var_1_15=15/2, var_1_16=0, var_1_1=1, var_1_3=1, var_1_4=16, var_1_5=0, var_1_6=0, var_1_7=1, var_1_8=32, var_1_9=23/5] [L88] CALL assume_abort_if_not(var_1_3 <= 255) VAL [\old(cond)=1, isInitial=1, var_1_10=37/4, var_1_11=5/4, var_1_12=100, var_1_13=64, var_1_14=0, var_1_15=15/2, var_1_16=0, var_1_1=1, var_1_3=1, var_1_4=16, var_1_5=0, var_1_6=0, var_1_7=1, var_1_8=32, var_1_9=23/5] [L20] COND FALSE !(!cond) [L88] RET assume_abort_if_not(var_1_3 <= 255) VAL [isInitial=1, var_1_10=37/4, var_1_11=5/4, var_1_12=100, var_1_13=64, var_1_14=0, var_1_15=15/2, var_1_16=0, var_1_1=1, var_1_3=1, var_1_4=16, var_1_5=0, var_1_6=0, var_1_7=1, var_1_8=32, var_1_9=23/5] [L89] var_1_4 = __VERIFIER_nondet_uchar() [L90] CALL assume_abort_if_not(var_1_4 >= 0) VAL [\old(cond)=1, isInitial=1, var_1_10=37/4, var_1_11=5/4, var_1_12=100, var_1_13=64, var_1_14=0, var_1_15=15/2, var_1_16=0, var_1_1=1, var_1_3=1, var_1_4=2, var_1_5=0, var_1_6=0, var_1_7=1, var_1_8=32, var_1_9=23/5] [L20] COND FALSE !(!cond) [L90] RET assume_abort_if_not(var_1_4 >= 0) VAL [isInitial=1, var_1_10=37/4, var_1_11=5/4, var_1_12=100, var_1_13=64, var_1_14=0, var_1_15=15/2, var_1_16=0, var_1_1=1, var_1_3=1, var_1_4=2, var_1_5=0, var_1_6=0, var_1_7=1, var_1_8=32, var_1_9=23/5] [L91] CALL assume_abort_if_not(var_1_4 <= 255) VAL [\old(cond)=1, isInitial=1, var_1_10=37/4, var_1_11=5/4, var_1_12=100, var_1_13=64, var_1_14=0, var_1_15=15/2, var_1_16=0, var_1_1=1, var_1_3=1, var_1_4=2, var_1_5=0, var_1_6=0, var_1_7=1, var_1_8=32, var_1_9=23/5] [L20] COND FALSE !(!cond) [L91] RET assume_abort_if_not(var_1_4 <= 255) VAL [isInitial=1, var_1_10=37/4, var_1_11=5/4, var_1_12=100, var_1_13=64, var_1_14=0, var_1_15=15/2, var_1_16=0, var_1_1=1, var_1_3=1, var_1_4=2, var_1_5=0, var_1_6=0, var_1_7=1, var_1_8=32, var_1_9=23/5] [L92] var_1_5 = __VERIFIER_nondet_uchar() [L93] CALL assume_abort_if_not(var_1_5 >= 0) VAL [\old(cond)=1, isInitial=1, var_1_10=37/4, var_1_11=5/4, var_1_12=100, var_1_13=64, var_1_14=0, var_1_15=15/2, var_1_16=0, var_1_1=1, var_1_3=1, var_1_4=2, var_1_5=0, var_1_6=0, var_1_7=1, var_1_8=32, var_1_9=23/5] [L20] COND FALSE !(!cond) [L93] RET assume_abort_if_not(var_1_5 >= 0) VAL [isInitial=1, var_1_10=37/4, var_1_11=5/4, var_1_12=100, var_1_13=64, var_1_14=0, var_1_15=15/2, var_1_16=0, var_1_1=1, var_1_3=1, var_1_4=2, var_1_5=0, var_1_6=0, var_1_7=1, var_1_8=32, var_1_9=23/5] [L94] CALL assume_abort_if_not(var_1_5 <= 0) VAL [\old(cond)=1, isInitial=1, var_1_10=37/4, var_1_11=5/4, var_1_12=100, var_1_13=64, var_1_14=0, var_1_15=15/2, var_1_16=0, var_1_1=1, var_1_3=1, var_1_4=2, var_1_5=0, var_1_6=0, var_1_7=1, var_1_8=32, var_1_9=23/5] [L20] COND FALSE !(!cond) [L94] RET assume_abort_if_not(var_1_5 <= 0) VAL [isInitial=1, var_1_10=37/4, var_1_11=5/4, var_1_12=100, var_1_13=64, var_1_14=0, var_1_15=15/2, var_1_16=0, var_1_1=1, var_1_3=1, var_1_4=2, var_1_5=0, var_1_6=0, var_1_7=1, var_1_8=32, var_1_9=23/5] [L95] var_1_7 = __VERIFIER_nondet_uchar() [L96] CALL assume_abort_if_not(var_1_7 >= 1) VAL [\old(cond)=1, isInitial=1, var_1_10=37/4, var_1_11=5/4, var_1_12=100, var_1_13=64, var_1_14=0, var_1_15=15/2, var_1_16=0, var_1_1=1, var_1_3=1, var_1_4=2, var_1_5=0, var_1_6=0, var_1_7=1, var_1_8=32, var_1_9=23/5] [L20] COND FALSE !(!cond) [L96] RET assume_abort_if_not(var_1_7 >= 1) VAL [isInitial=1, var_1_10=37/4, var_1_11=5/4, var_1_12=100, var_1_13=64, var_1_14=0, var_1_15=15/2, var_1_16=0, var_1_1=1, var_1_3=1, var_1_4=2, var_1_5=0, var_1_6=0, var_1_7=1, var_1_8=32, var_1_9=23/5] [L97] CALL assume_abort_if_not(var_1_7 <= 1) VAL [\old(cond)=1, isInitial=1, var_1_10=37/4, var_1_11=5/4, var_1_12=100, var_1_13=64, var_1_14=0, var_1_15=15/2, var_1_16=0, var_1_1=1, var_1_3=1, var_1_4=2, var_1_5=0, var_1_6=0, var_1_7=1, var_1_8=32, var_1_9=23/5] [L20] COND FALSE !(!cond) [L97] RET assume_abort_if_not(var_1_7 <= 1) VAL [isInitial=1, var_1_10=37/4, var_1_11=5/4, var_1_12=100, var_1_13=64, var_1_14=0, var_1_15=15/2, var_1_16=0, var_1_1=1, var_1_3=1, var_1_4=2, var_1_5=0, var_1_6=0, var_1_7=1, var_1_8=32, var_1_9=23/5] [L98] var_1_8 = __VERIFIER_nondet_uchar() [L99] CALL assume_abort_if_not(var_1_8 >= 0) VAL [\old(cond)=1, isInitial=1, var_1_10=37/4, var_1_11=5/4, var_1_12=100, var_1_13=64, var_1_14=0, var_1_15=15/2, var_1_16=0, var_1_1=1, var_1_3=1, var_1_4=2, var_1_5=0, var_1_6=0, var_1_7=1, var_1_8=1, var_1_9=23/5] [L20] COND FALSE !(!cond) [L99] RET assume_abort_if_not(var_1_8 >= 0) VAL [isInitial=1, var_1_10=37/4, var_1_11=5/4, var_1_12=100, var_1_13=64, var_1_14=0, var_1_15=15/2, var_1_16=0, var_1_1=1, var_1_3=1, var_1_4=2, var_1_5=0, var_1_6=0, var_1_7=1, var_1_8=1, var_1_9=23/5] [L100] CALL assume_abort_if_not(var_1_8 <= 255) VAL [\old(cond)=1, isInitial=1, var_1_10=37/4, var_1_11=5/4, var_1_12=100, var_1_13=64, var_1_14=0, var_1_15=15/2, var_1_16=0, var_1_1=1, var_1_3=1, var_1_4=2, var_1_5=0, var_1_6=0, var_1_7=1, var_1_8=1, var_1_9=23/5] [L20] COND FALSE !(!cond) [L100] RET assume_abort_if_not(var_1_8 <= 255) VAL [isInitial=1, var_1_10=37/4, var_1_11=5/4, var_1_12=100, var_1_13=64, var_1_14=0, var_1_15=15/2, var_1_16=0, var_1_1=1, var_1_3=1, var_1_4=2, var_1_5=0, var_1_6=0, var_1_7=1, var_1_8=1, var_1_9=23/5] [L101] CALL assume_abort_if_not(var_1_8 != 0) VAL [\old(cond)=1, isInitial=1, var_1_10=37/4, var_1_11=5/4, var_1_12=100, var_1_13=64, var_1_14=0, var_1_15=15/2, var_1_16=0, var_1_1=1, var_1_3=1, var_1_4=2, var_1_5=0, var_1_6=0, var_1_7=1, var_1_8=1, var_1_9=23/5] [L20] COND FALSE !(!cond) [L101] RET assume_abort_if_not(var_1_8 != 0) VAL [isInitial=1, var_1_10=37/4, var_1_11=5/4, var_1_12=100, var_1_13=64, var_1_14=0, var_1_15=15/2, var_1_16=0, var_1_1=1, var_1_3=1, var_1_4=2, var_1_5=0, var_1_6=0, var_1_7=1, var_1_8=1, var_1_9=23/5] [L102] var_1_10 = __VERIFIER_nondet_double() [L103] CALL assume_abort_if_not((var_1_10 >= -922337.2036854765600e+13F && var_1_10 <= -1.0e-20F) || (var_1_10 <= 9223372.036854765600e+12F && var_1_10 >= 1.0e-20F )) VAL [\old(cond)=1, isInitial=1, var_1_10=2, var_1_11=5/4, var_1_12=100, var_1_13=64, var_1_14=0, var_1_15=15/2, var_1_16=0, var_1_1=1, var_1_3=1, var_1_4=2, var_1_5=0, var_1_6=0, var_1_7=1, var_1_8=1, var_1_9=23/5] [L20] COND FALSE !(!cond) [L103] RET assume_abort_if_not((var_1_10 >= -922337.2036854765600e+13F && var_1_10 <= -1.0e-20F) || (var_1_10 <= 9223372.036854765600e+12F && var_1_10 >= 1.0e-20F )) VAL [isInitial=1, var_1_10=2, var_1_11=5/4, var_1_12=100, var_1_13=64, var_1_14=0, var_1_15=15/2, var_1_16=0, var_1_1=1, var_1_3=1, var_1_4=2, var_1_5=0, var_1_6=0, var_1_7=1, var_1_8=1, var_1_9=23/5] [L104] var_1_13 = __VERIFIER_nondet_uchar() [L105] CALL assume_abort_if_not(var_1_13 >= 0) VAL [\old(cond)=1, isInitial=1, var_1_10=2, var_1_11=5/4, var_1_12=100, var_1_13=50, var_1_14=0, var_1_15=15/2, var_1_16=0, var_1_1=1, var_1_3=1, var_1_4=2, var_1_5=0, var_1_6=0, var_1_7=1, var_1_8=1, var_1_9=23/5] [L20] COND FALSE !(!cond) [L105] RET assume_abort_if_not(var_1_13 >= 0) VAL [isInitial=1, var_1_10=2, var_1_11=5/4, var_1_12=100, var_1_13=50, var_1_14=0, var_1_15=15/2, var_1_16=0, var_1_1=1, var_1_3=1, var_1_4=2, var_1_5=0, var_1_6=0, var_1_7=1, var_1_8=1, var_1_9=23/5] [L106] CALL assume_abort_if_not(var_1_13 <= 254) VAL [\old(cond)=1, isInitial=1, var_1_10=2, var_1_11=5/4, var_1_12=100, var_1_13=50, var_1_14=0, var_1_15=15/2, var_1_16=0, var_1_1=1, var_1_3=1, var_1_4=2, var_1_5=0, var_1_6=0, var_1_7=1, var_1_8=1, var_1_9=23/5] [L20] COND FALSE !(!cond) [L106] RET assume_abort_if_not(var_1_13 <= 254) VAL [isInitial=1, var_1_10=2, var_1_11=5/4, var_1_12=100, var_1_13=50, var_1_14=0, var_1_15=15/2, var_1_16=0, var_1_1=1, var_1_3=1, var_1_4=2, var_1_5=0, var_1_6=0, var_1_7=1, var_1_8=1, var_1_9=23/5] [L119] RET updateVariables() [L120] CALL step() [L41] EXPR var_1_3 ^ var_1_4 [L41] COND FALSE !(var_1_2 <= (var_1_3 ^ var_1_4)) [L44] var_1_1 = (! var_1_5) [L46] COND FALSE !(-256 >= var_1_3) [L49] COND FALSE !((var_1_2 < (var_1_4 / var_1_8)) || ((var_1_5 && var_1_7) && var_1_1)) [L53] COND TRUE ((((((((var_1_2) < (var_1_3)) ? (var_1_2) : (var_1_3)))) > (var_1_4)) ? (((((var_1_2) < (var_1_3)) ? (var_1_2) : (var_1_3)))) : (var_1_4))) <= (50 * var_1_8) [L54] var_1_9 = var_1_10 [L56] COND TRUE (var_1_7 && var_1_1) || (! var_1_5) [L57] var_1_11 = var_1_10 [L59] COND TRUE \read(var_1_1) [L60] COND FALSE !(var_1_10 >= (- var_1_9)) [L67] var_1_12 = var_1_13 [L72] COND FALSE !((var_1_13 % (5u + 256u)) <= var_1_2) [L79] var_1_15 = var_1_10 [L80] var_1_16 = var_1_3 [L120] RET step() [L121] CALL, EXPR property() [L111] EXPR var_1_3 ^ var_1_4 [L111-L112] return ((((((((var_1_2 <= (var_1_3 ^ var_1_4)) ? (var_1_1 == ((unsigned char) (! var_1_5))) : (var_1_1 == ((unsigned char) (! var_1_5)))) && ((-256 >= var_1_3) ? (var_1_6 == ((unsigned char) (var_1_1 || var_1_7))) : (((var_1_2 < (var_1_4 / var_1_8)) || ((var_1_5 && var_1_7) && var_1_1)) ? (var_1_6 == ((unsigned char) var_1_7)) : 1))) && ((((((((((var_1_2) < (var_1_3)) ? (var_1_2) : (var_1_3)))) > (var_1_4)) ? (((((var_1_2) < (var_1_3)) ? (var_1_2) : (var_1_3)))) : (var_1_4))) <= (50 * var_1_8)) ? (var_1_9 == ((double) var_1_10)) : 1)) && (((var_1_7 && var_1_1) || (! var_1_5)) ? (var_1_11 == ((double) var_1_10)) : 1)) && (var_1_1 ? ((var_1_10 >= (- var_1_9)) ? ((var_1_8 != var_1_3) ? (var_1_12 == ((unsigned char) var_1_13)) : (var_1_12 == ((unsigned char) 50))) : (var_1_12 == ((unsigned char) var_1_13))) : (var_1_12 == ((unsigned char) var_1_13)))) && (((var_1_13 % (5u + 256u)) <= var_1_2) ? (((var_1_13 + 16) >= var_1_2) ? (var_1_14 == ((unsigned char) var_1_7)) : (var_1_14 == ((unsigned char) var_1_7))) : 1)) && (var_1_15 == ((float) var_1_10))) && (var_1_16 == ((signed long int) var_1_3)) ; [L121] RET, EXPR property() [L121] CALL __VERIFIER_assert(property()) [L19] COND TRUE !(cond) VAL [\old(cond)=0, cond=0, isInitial=1, var_1_10=2, var_1_11=2, var_1_12=50, var_1_13=50, var_1_14=0, var_1_15=2, var_1_16=1, var_1_1=1, var_1_2=49, var_1_3=1, var_1_4=2, var_1_5=0, var_1_6=0, var_1_7=1, var_1_8=1, var_1_9=2] [L19] reach_error() VAL [\old(cond)=0, cond=0, isInitial=1, var_1_10=2, var_1_11=2, var_1_12=50, var_1_13=50, var_1_14=0, var_1_15=2, var_1_16=1, var_1_1=1, var_1_2=49, var_1_3=1, var_1_4=2, var_1_5=0, var_1_6=0, var_1_7=1, var_1_8=1, var_1_9=2] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 33 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.9s, OverallIterations: 1, TraceHistogramMax: 16, 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=33occurred 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: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 60 NumberOfCodeBlocks, 60 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 [2023-11-12 00:44:43,057 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db7d24b8-f95e-4f5f-aecc-01b56396deae/bin/utaipan-verify-NcY6lQBIFX/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_db7d24b8-f95e-4f5f-aecc-01b56396deae/bin/utaipan-verify-NcY6lQBIFX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db7d24b8-f95e-4f5f-aecc-01b56396deae/bin/utaipan-verify-NcY6lQBIFX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db7d24b8-f95e-4f5f-aecc-01b56396deae/bin/utaipan-verify-NcY6lQBIFX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db7d24b8-f95e-4f5f-aecc-01b56396deae/bin/utaipan-verify-NcY6lQBIFX/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_codestructure_normal_file-68.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db7d24b8-f95e-4f5f-aecc-01b56396deae/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db7d24b8-f95e-4f5f-aecc-01b56396deae/bin/utaipan-verify-NcY6lQBIFX --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 bdb04820b0552f240cac64f9b4eeb39d6636c8d16d50737ca938c89bab3fc009 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 00:44:45,759 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 00:44:45,865 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db7d24b8-f95e-4f5f-aecc-01b56396deae/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2023-11-12 00:44:45,883 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 00:44:45,884 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 00:44:45,926 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 00:44:45,927 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 00:44:45,928 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 00:44:45,929 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 00:44:45,934 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 00:44:45,934 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-12 00:44:45,935 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-12 00:44:45,935 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-12 00:44:45,937 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-12 00:44:45,937 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-12 00:44:45,938 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-12 00:44:45,939 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 00:44:45,940 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-12 00:44:45,940 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 00:44:45,941 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 00:44:45,942 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 00:44:45,942 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-12 00:44:45,943 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 00:44:45,943 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-12 00:44:45,943 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-12 00:44:45,944 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-12 00:44:45,944 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-12 00:44:45,945 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 00:44:45,945 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 00:44:45,945 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 00:44:45,947 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 00:44:45,947 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-12 00:44:45,947 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 00:44:45,948 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 00:44:45,948 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 00:44:45,949 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 00:44:45,949 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-12 00:44:45,949 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-11-12 00:44:45,949 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-12 00:44:45,950 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-12 00:44:45,951 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-12 00:44:45,951 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 00:44:45,951 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_db7d24b8-f95e-4f5f-aecc-01b56396deae/bin/utaipan-verify-NcY6lQBIFX/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db7d24b8-f95e-4f5f-aecc-01b56396deae/bin/utaipan-verify-NcY6lQBIFX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bdb04820b0552f240cac64f9b4eeb39d6636c8d16d50737ca938c89bab3fc009 [2023-11-12 00:44:46,388 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 00:44:46,421 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 00:44:46,424 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 00:44:46,425 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 00:44:46,426 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 00:44:46,428 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db7d24b8-f95e-4f5f-aecc-01b56396deae/bin/utaipan-verify-NcY6lQBIFX/../../sv-benchmarks/c/hardness-nfm22/hardness_codestructure_normal_file-68.i [2023-11-12 00:44:49,607 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 00:44:49,930 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 00:44:49,932 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db7d24b8-f95e-4f5f-aecc-01b56396deae/sv-benchmarks/c/hardness-nfm22/hardness_codestructure_normal_file-68.i [2023-11-12 00:44:49,948 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db7d24b8-f95e-4f5f-aecc-01b56396deae/bin/utaipan-verify-NcY6lQBIFX/data/d2dfebec6/2ac0dddeaf6f4b4e90f0566d766ac72b/FLAG200b2efb8 [2023-11-12 00:44:49,970 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db7d24b8-f95e-4f5f-aecc-01b56396deae/bin/utaipan-verify-NcY6lQBIFX/data/d2dfebec6/2ac0dddeaf6f4b4e90f0566d766ac72b [2023-11-12 00:44:49,976 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 00:44:49,977 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 00:44:49,981 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 00:44:49,981 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 00:44:49,986 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 00:44:49,987 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:44:49" (1/1) ... [2023-11-12 00:44:49,988 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@12ec72ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:44:49, skipping insertion in model container [2023-11-12 00:44:49,989 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:44:49" (1/1) ... [2023-11-12 00:44:50,034 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 00:44:50,180 WARN L240 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_db7d24b8-f95e-4f5f-aecc-01b56396deae/sv-benchmarks/c/hardness-nfm22/hardness_codestructure_normal_file-68.i[913,926] [2023-11-12 00:44:50,228 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:44:50,246 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 00:44:50,260 WARN L240 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_db7d24b8-f95e-4f5f-aecc-01b56396deae/sv-benchmarks/c/hardness-nfm22/hardness_codestructure_normal_file-68.i[913,926] [2023-11-12 00:44:50,301 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:44:50,319 INFO L206 MainTranslator]: Completed translation [2023-11-12 00:44:50,320 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:44:50 WrapperNode [2023-11-12 00:44:50,320 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 00:44:50,321 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 00:44:50,322 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 00:44:50,322 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 00:44:50,329 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:44:50" (1/1) ... [2023-11-12 00:44:50,343 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:44:50" (1/1) ... [2023-11-12 00:44:50,372 INFO L138 Inliner]: procedures = 27, calls = 29, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 114 [2023-11-12 00:44:50,373 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 00:44:50,373 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 00:44:50,374 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 00:44:50,374 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 00:44:50,383 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:44:50" (1/1) ... [2023-11-12 00:44:50,384 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:44:50" (1/1) ... [2023-11-12 00:44:50,389 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:44:50" (1/1) ... [2023-11-12 00:44:50,390 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:44:50" (1/1) ... [2023-11-12 00:44:50,400 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:44:50" (1/1) ... [2023-11-12 00:44:50,404 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:44:50" (1/1) ... [2023-11-12 00:44:50,407 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:44:50" (1/1) ... [2023-11-12 00:44:50,409 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:44:50" (1/1) ... [2023-11-12 00:44:50,414 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 00:44:50,415 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 00:44:50,415 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 00:44:50,415 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 00:44:50,416 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:44:50" (1/1) ... [2023-11-12 00:44:50,423 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 00:44:50,446 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db7d24b8-f95e-4f5f-aecc-01b56396deae/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:44:50,458 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db7d24b8-f95e-4f5f-aecc-01b56396deae/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 00:44:50,464 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db7d24b8-f95e-4f5f-aecc-01b56396deae/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 00:44:50,507 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 00:44:50,507 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-12 00:44:50,507 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-12 00:44:50,507 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-12 00:44:50,508 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 00:44:50,508 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 00:44:50,663 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 00:44:50,666 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 00:44:51,399 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 00:44:51,407 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 00:44:51,407 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-12 00:44:51,409 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:44:51 BoogieIcfgContainer [2023-11-12 00:44:51,410 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 00:44:51,412 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 00:44:51,412 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 00:44:51,416 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 00:44:51,417 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 12:44:49" (1/3) ... [2023-11-12 00:44:51,417 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27c33546 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:44:51, skipping insertion in model container [2023-11-12 00:44:51,418 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:44:50" (2/3) ... [2023-11-12 00:44:51,418 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27c33546 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:44:51, skipping insertion in model container [2023-11-12 00:44:51,418 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:44:51" (3/3) ... [2023-11-12 00:44:51,420 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_codestructure_normal_file-68.i [2023-11-12 00:44:51,440 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 00:44:51,440 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-12 00:44:51,506 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 00:44:51,513 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=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;@32c879fa, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-12 00:44:51,513 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-12 00:44:51,518 INFO L276 IsEmpty]: Start isEmpty. Operand has 54 states, 35 states have (on average 1.4285714285714286) internal successors, (50), 36 states have internal predecessors, (50), 16 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2023-11-12 00:44:51,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2023-11-12 00:44:51,535 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:44:51,536 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 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] [2023-11-12 00:44:51,539 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:44:51,546 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:44:51,546 INFO L85 PathProgramCache]: Analyzing trace with hash 1297783535, now seen corresponding path program 1 times [2023-11-12 00:44:51,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-12 00:44:51,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1436397950] [2023-11-12 00:44:51,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:44:51,570 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 [2023-11-12 00:44:51,570 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db7d24b8-f95e-4f5f-aecc-01b56396deae/bin/utaipan-verify-NcY6lQBIFX/mathsat [2023-11-12 00:44:51,575 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db7d24b8-f95e-4f5f-aecc-01b56396deae/bin/utaipan-verify-NcY6lQBIFX/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) [2023-11-12 00:44:51,600 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db7d24b8-f95e-4f5f-aecc-01b56396deae/bin/utaipan-verify-NcY6lQBIFX/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 [2023-11-12 00:44:51,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:44:51,908 INFO L262 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-12 00:44:51,919 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:44:51,964 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-11-12 00:44:51,965 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 00:44:51,966 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-12 00:44:51,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1436397950] [2023-11-12 00:44:51,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1436397950] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:44:51,967 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:44:51,967 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 00:44:51,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416737394] [2023-11-12 00:44:51,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:44:51,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-12 00:44:51,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-12 00:44:52,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-12 00:44:52,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-12 00:44:52,009 INFO L87 Difference]: Start difference. First operand has 54 states, 35 states have (on average 1.4285714285714286) internal successors, (50), 36 states have internal predecessors, (50), 16 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) 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, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-11-12 00:44:52,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:44:52,039 INFO L93 Difference]: Finished difference Result 101 states and 174 transitions. [2023-11-12 00:44:52,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-12 00:44:52,042 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, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 104 [2023-11-12 00:44:52,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:44:52,052 INFO L225 Difference]: With dead ends: 101 [2023-11-12 00:44:52,052 INFO L226 Difference]: Without dead ends: 50 [2023-11-12 00:44:52,056 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-12 00:44:52,060 INFO L413 NwaCegarLoop]: 74 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, 74 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 [2023-11-12 00:44:52,061 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 00:44:52,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2023-11-12 00:44:52,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2023-11-12 00:44:52,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 32 states have (on average 1.3125) internal successors, (42), 32 states have internal predecessors, (42), 16 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2023-11-12 00:44:52,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 74 transitions. [2023-11-12 00:44:52,108 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 74 transitions. Word has length 104 [2023-11-12 00:44:52,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:44:52,111 INFO L495 AbstractCegarLoop]: Abstraction has 50 states and 74 transitions. [2023-11-12 00:44:52,111 INFO L496 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, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-11-12 00:44:52,111 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 74 transitions. [2023-11-12 00:44:52,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2023-11-12 00:44:52,114 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:44:52,115 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 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] [2023-11-12 00:44:52,133 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db7d24b8-f95e-4f5f-aecc-01b56396deae/bin/utaipan-verify-NcY6lQBIFX/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 [2023-11-12 00:44:52,329 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db7d24b8-f95e-4f5f-aecc-01b56396deae/bin/utaipan-verify-NcY6lQBIFX/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 [2023-11-12 00:44:52,330 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:44:52,330 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:44:52,331 INFO L85 PathProgramCache]: Analyzing trace with hash -1199191255, now seen corresponding path program 1 times [2023-11-12 00:44:52,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-12 00:44:52,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [530727883] [2023-11-12 00:44:52,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:44:52,332 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 [2023-11-12 00:44:52,332 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db7d24b8-f95e-4f5f-aecc-01b56396deae/bin/utaipan-verify-NcY6lQBIFX/mathsat [2023-11-12 00:44:52,369 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db7d24b8-f95e-4f5f-aecc-01b56396deae/bin/utaipan-verify-NcY6lQBIFX/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) [2023-11-12 00:44:52,370 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db7d24b8-f95e-4f5f-aecc-01b56396deae/bin/utaipan-verify-NcY6lQBIFX/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 [2023-11-12 00:44:52,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:44:52,560 INFO L262 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-12 00:44:52,567 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:44:52,899 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 253 proven. 24 refuted. 0 times theorem prover too weak. 203 trivial. 0 not checked. [2023-11-12 00:44:52,900 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 00:44:53,267 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 21 proven. 24 refuted. 0 times theorem prover too weak. 435 trivial. 0 not checked. [2023-11-12 00:44:53,267 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-12 00:44:53,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [530727883] [2023-11-12 00:44:53,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [530727883] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 00:44:53,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [684295138] [2023-11-12 00:44:53,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:44:53,269 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-12 00:44:53,269 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db7d24b8-f95e-4f5f-aecc-01b56396deae/bin/utaipan-verify-NcY6lQBIFX/cvc4 [2023-11-12 00:44:53,272 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db7d24b8-f95e-4f5f-aecc-01b56396deae/bin/utaipan-verify-NcY6lQBIFX/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-12 00:44:53,285 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db7d24b8-f95e-4f5f-aecc-01b56396deae/bin/utaipan-verify-NcY6lQBIFX/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2023-11-12 00:44:53,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:44:53,593 INFO L262 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-12 00:44:53,599 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:44:53,763 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-11-12 00:44:53,764 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 00:44:53,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [684295138] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:44:53,764 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-12 00:44:53,765 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6, 6] total 10 [2023-11-12 00:44:53,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670074715] [2023-11-12 00:44:53,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:44:53,767 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 00:44:53,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-12 00:44:53,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 00:44:53,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2023-11-12 00:44:53,769 INFO L87 Difference]: Start difference. First operand 50 states and 74 transitions. Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-11-12 00:44:54,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:44:54,722 INFO L93 Difference]: Finished difference Result 146 states and 211 transitions. [2023-11-12 00:44:54,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-12 00:44:54,725 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 105 [2023-11-12 00:44:54,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:44:54,728 INFO L225 Difference]: With dead ends: 146 [2023-11-12 00:44:54,728 INFO L226 Difference]: Without dead ends: 99 [2023-11-12 00:44:54,729 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 314 GetRequests, 304 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2023-11-12 00:44:54,731 INFO L413 NwaCegarLoop]: 77 mSDtfsCounter, 104 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 131 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-12 00:44:54,731 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [104 Valid, 131 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-12 00:44:54,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2023-11-12 00:44:54,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 55. [2023-11-12 00:44:54,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 36 states have (on average 1.2777777777777777) internal successors, (46), 36 states have internal predecessors, (46), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2023-11-12 00:44:54,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 78 transitions. [2023-11-12 00:44:54,761 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 78 transitions. Word has length 105 [2023-11-12 00:44:54,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:44:54,762 INFO L495 AbstractCegarLoop]: Abstraction has 55 states and 78 transitions. [2023-11-12 00:44:54,762 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-11-12 00:44:54,763 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 78 transitions. [2023-11-12 00:44:54,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2023-11-12 00:44:54,765 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:44:54,765 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 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] [2023-11-12 00:44:54,786 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db7d24b8-f95e-4f5f-aecc-01b56396deae/bin/utaipan-verify-NcY6lQBIFX/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)] Forceful destruction successful, exit code 0 [2023-11-12 00:44:54,983 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db7d24b8-f95e-4f5f-aecc-01b56396deae/bin/utaipan-verify-NcY6lQBIFX/cvc4 --incremental --print-success --lang smt (4)] Forceful destruction successful, exit code 0 [2023-11-12 00:44:55,180 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db7d24b8-f95e-4f5f-aecc-01b56396deae/bin/utaipan-verify-NcY6lQBIFX/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 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db7d24b8-f95e-4f5f-aecc-01b56396deae/bin/utaipan-verify-NcY6lQBIFX/cvc4 --incremental --print-success --lang smt [2023-11-12 00:44:55,181 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:44:55,181 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:44:55,182 INFO L85 PathProgramCache]: Analyzing trace with hash -2008537881, now seen corresponding path program 1 times [2023-11-12 00:44:55,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-12 00:44:55,183 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1036442489] [2023-11-12 00:44:55,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:44:55,183 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 [2023-11-12 00:44:55,183 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db7d24b8-f95e-4f5f-aecc-01b56396deae/bin/utaipan-verify-NcY6lQBIFX/mathsat [2023-11-12 00:44:55,185 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db7d24b8-f95e-4f5f-aecc-01b56396deae/bin/utaipan-verify-NcY6lQBIFX/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) [2023-11-12 00:44:55,191 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db7d24b8-f95e-4f5f-aecc-01b56396deae/bin/utaipan-verify-NcY6lQBIFX/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 [2023-11-12 00:44:55,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:44:55,387 INFO L262 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-12 00:44:55,392 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:44:55,906 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 263 proven. 42 refuted. 0 times theorem prover too weak. 175 trivial. 0 not checked. [2023-11-12 00:44:55,906 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 00:44:56,362 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 42 proven. 45 refuted. 0 times theorem prover too weak. 393 trivial. 0 not checked. [2023-11-12 00:44:56,362 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-12 00:44:56,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1036442489] [2023-11-12 00:44:56,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1036442489] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 00:44:56,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1998520093] [2023-11-12 00:44:56,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:44:56,363 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-12 00:44:56,364 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db7d24b8-f95e-4f5f-aecc-01b56396deae/bin/utaipan-verify-NcY6lQBIFX/cvc4 [2023-11-12 00:44:56,365 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db7d24b8-f95e-4f5f-aecc-01b56396deae/bin/utaipan-verify-NcY6lQBIFX/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-12 00:44:56,388 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db7d24b8-f95e-4f5f-aecc-01b56396deae/bin/utaipan-verify-NcY6lQBIFX/cvc4 --incremental --print-success --lang smt (6)] Waiting until timeout for monitored process [2023-11-12 00:44:56,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:44:56,958 INFO L262 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-12 00:44:56,962 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:44:57,126 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 253 proven. 24 refuted. 0 times theorem prover too weak. 203 trivial. 0 not checked. [2023-11-12 00:44:57,126 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 00:44:57,291 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 21 proven. 24 refuted. 0 times theorem prover too weak. 435 trivial. 0 not checked. [2023-11-12 00:44:57,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1998520093] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 00:44:57,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [503244167] [2023-11-12 00:44:57,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:44:57,293 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:44:57,293 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db7d24b8-f95e-4f5f-aecc-01b56396deae/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:44:57,300 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db7d24b8-f95e-4f5f-aecc-01b56396deae/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 00:44:57,304 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db7d24b8-f95e-4f5f-aecc-01b56396deae/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-12 00:44:57,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:44:57,477 INFO L262 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-12 00:44:57,480 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:44:57,634 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 253 proven. 24 refuted. 0 times theorem prover too weak. 203 trivial. 0 not checked. [2023-11-12 00:44:57,634 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 00:44:57,808 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 21 proven. 24 refuted. 0 times theorem prover too weak. 435 trivial. 0 not checked. [2023-11-12 00:44:57,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [503244167] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 00:44:57,809 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2023-11-12 00:44:57,809 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 5, 5, 5, 5] total 14 [2023-11-12 00:44:57,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129316377] [2023-11-12 00:44:57,810 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2023-11-12 00:44:57,828 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-12 00:44:57,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-12 00:44:57,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-12 00:44:57,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2023-11-12 00:44:57,830 INFO L87 Difference]: Start difference. First operand 55 states and 78 transitions. Second operand has 14 states, 14 states have (on average 4.285714285714286) internal successors, (60), 14 states have internal predecessors, (60), 3 states have call successors, (38), 3 states have call predecessors, (38), 7 states have return successors, (41), 3 states have call predecessors, (41), 3 states have call successors, (41) [2023-11-12 00:44:58,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:44:58,888 INFO L93 Difference]: Finished difference Result 118 states and 161 transitions. [2023-11-12 00:44:58,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-12 00:44:58,908 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.285714285714286) internal successors, (60), 14 states have internal predecessors, (60), 3 states have call successors, (38), 3 states have call predecessors, (38), 7 states have return successors, (41), 3 states have call predecessors, (41), 3 states have call successors, (41) Word has length 105 [2023-11-12 00:44:58,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:44:58,910 INFO L225 Difference]: With dead ends: 118 [2023-11-12 00:44:58,910 INFO L226 Difference]: Without dead ends: 66 [2023-11-12 00:44:58,911 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 635 GetRequests, 610 SyntacticMatches, 3 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=179, Invalid=373, Unknown=0, NotChecked=0, Total=552 [2023-11-12 00:44:58,913 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 163 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-12 00:44:58,914 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [165 Valid, 114 Invalid, 239 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-12 00:44:58,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2023-11-12 00:44:58,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 62. [2023-11-12 00:44:58,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 41 states have (on average 1.1951219512195121) internal successors, (49), 41 states have internal predecessors, (49), 16 states have call successors, (16), 4 states have call predecessors, (16), 4 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2023-11-12 00:44:58,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 81 transitions. [2023-11-12 00:44:58,927 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 81 transitions. Word has length 105 [2023-11-12 00:44:58,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:44:58,929 INFO L495 AbstractCegarLoop]: Abstraction has 62 states and 81 transitions. [2023-11-12 00:44:58,929 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.285714285714286) internal successors, (60), 14 states have internal predecessors, (60), 3 states have call successors, (38), 3 states have call predecessors, (38), 7 states have return successors, (41), 3 states have call predecessors, (41), 3 states have call successors, (41) [2023-11-12 00:44:58,929 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 81 transitions. [2023-11-12 00:44:58,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2023-11-12 00:44:58,931 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:44:58,932 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 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] [2023-11-12 00:44:58,949 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db7d24b8-f95e-4f5f-aecc-01b56396deae/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-12 00:44:59,154 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db7d24b8-f95e-4f5f-aecc-01b56396deae/bin/utaipan-verify-NcY6lQBIFX/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)] Forceful destruction successful, exit code 0 [2023-11-12 00:44:59,348 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db7d24b8-f95e-4f5f-aecc-01b56396deae/bin/utaipan-verify-NcY6lQBIFX/cvc4 --incremental --print-success --lang smt (6)] Forceful destruction successful, exit code 0 [2023-11-12 00:44:59,544 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db7d24b8-f95e-4f5f-aecc-01b56396deae/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db7d24b8-f95e-4f5f-aecc-01b56396deae/bin/utaipan-verify-NcY6lQBIFX/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_db7d24b8-f95e-4f5f-aecc-01b56396deae/bin/utaipan-verify-NcY6lQBIFX/cvc4 --incremental --print-success --lang smt [2023-11-12 00:44:59,545 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:44:59,545 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:44:59,546 INFO L85 PathProgramCache]: Analyzing trace with hash -1931552540, now seen corresponding path program 1 times [2023-11-12 00:44:59,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-12 00:44:59,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [473498970] [2023-11-12 00:44:59,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:44:59,547 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 [2023-11-12 00:44:59,547 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db7d24b8-f95e-4f5f-aecc-01b56396deae/bin/utaipan-verify-NcY6lQBIFX/mathsat [2023-11-12 00:44:59,552 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db7d24b8-f95e-4f5f-aecc-01b56396deae/bin/utaipan-verify-NcY6lQBIFX/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) [2023-11-12 00:44:59,564 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db7d24b8-f95e-4f5f-aecc-01b56396deae/bin/utaipan-verify-NcY6lQBIFX/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 (8)] Waiting until timeout for monitored process [2023-11-12 00:44:59,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:44:59,774 INFO L262 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 21 conjunts are in the unsatisfiable core [2023-11-12 00:44:59,779 INFO L285 TraceCheckSpWp]: Computing forward predicates...