./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-examples/standard_copy7_ground-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 826ab2ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0ffd2f9-1eba-40d9-9e9a-d740b9e32243/bin/utaipan-verify-sOmjnqqW8E/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0ffd2f9-1eba-40d9-9e9a-d740b9e32243/bin/utaipan-verify-sOmjnqqW8E/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0ffd2f9-1eba-40d9-9e9a-d740b9e32243/bin/utaipan-verify-sOmjnqqW8E/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0ffd2f9-1eba-40d9-9e9a-d740b9e32243/bin/utaipan-verify-sOmjnqqW8E/config/TaipanReach.xml -i ../../sv-benchmarks/c/array-examples/standard_copy7_ground-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0ffd2f9-1eba-40d9-9e9a-d740b9e32243/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0ffd2f9-1eba-40d9-9e9a-d740b9e32243/bin/utaipan-verify-sOmjnqqW8E --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 46307615818d6371ae296fa4995def50a9373bd159748713204d6c22dd4af97e --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-14 05:36:30,418 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-14 05:36:30,509 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0ffd2f9-1eba-40d9-9e9a-d740b9e32243/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-Reach-32bit-Taipan_Default.epf [2024-11-14 05:36:30,523 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-14 05:36:30,524 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-14 05:36:30,577 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-14 05:36:30,578 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-14 05:36:30,578 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-14 05:36:30,579 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-14 05:36:30,579 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-14 05:36:30,579 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-14 05:36:30,579 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-14 05:36:30,579 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-14 05:36:30,580 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-14 05:36:30,580 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-14 05:36:30,580 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-14 05:36:30,580 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-14 05:36:30,580 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-14 05:36:30,581 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-14 05:36:30,581 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-14 05:36:30,581 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-14 05:36:30,581 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-14 05:36:30,582 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-14 05:36:30,582 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-14 05:36:30,582 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-14 05:36:30,582 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-14 05:36:30,582 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-14 05:36:30,583 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-14 05:36:30,583 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-14 05:36:30,583 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-14 05:36:30,583 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-14 05:36:30,583 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-14 05:36:30,583 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-14 05:36:30,584 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-14 05:36:30,584 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-14 05:36:30,584 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-14 05:36:30,584 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-14 05:36:30,584 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-14 05:36:30,585 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 05:36:30,585 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-14 05:36:30,585 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-14 05:36:30,585 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-14 05:36:30,585 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-14 05:36:30,585 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-14 05:36:30,586 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-14 05:36:30,586 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-14 05:36:30,586 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-14 05:36:30,586 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_b0ffd2f9-1eba-40d9-9e9a-d740b9e32243/bin/utaipan-verify-sOmjnqqW8E 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 -> 46307615818d6371ae296fa4995def50a9373bd159748713204d6c22dd4af97e [2024-11-14 05:36:30,976 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-14 05:36:30,986 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-14 05:36:30,989 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-14 05:36:30,991 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-14 05:36:30,991 INFO L274 PluginConnector]: CDTParser initialized [2024-11-14 05:36:30,992 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0ffd2f9-1eba-40d9-9e9a-d740b9e32243/bin/utaipan-verify-sOmjnqqW8E/../../sv-benchmarks/c/array-examples/standard_copy7_ground-1.i Unable to find full path for "g++" [2024-11-14 05:36:33,265 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-14 05:36:33,607 INFO L384 CDTParser]: Found 1 translation units. [2024-11-14 05:36:33,610 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0ffd2f9-1eba-40d9-9e9a-d740b9e32243/sv-benchmarks/c/array-examples/standard_copy7_ground-1.i [2024-11-14 05:36:33,619 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0ffd2f9-1eba-40d9-9e9a-d740b9e32243/bin/utaipan-verify-sOmjnqqW8E/data/e2fb37926/8d0ea748b86b4392827eb6ac5a342826/FLAG8e9505c44 [2024-11-14 05:36:33,638 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0ffd2f9-1eba-40d9-9e9a-d740b9e32243/bin/utaipan-verify-sOmjnqqW8E/data/e2fb37926/8d0ea748b86b4392827eb6ac5a342826 [2024-11-14 05:36:33,640 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-14 05:36:33,648 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-14 05:36:33,649 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-14 05:36:33,650 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-14 05:36:33,658 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-14 05:36:33,660 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 05:36:33" (1/1) ... [2024-11-14 05:36:33,661 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@38cf7ac8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:36:33, skipping insertion in model container [2024-11-14 05:36:33,664 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 05:36:33" (1/1) ... [2024-11-14 05:36:33,684 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-14 05:36:33,910 WARN L250 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_b0ffd2f9-1eba-40d9-9e9a-d740b9e32243/sv-benchmarks/c/array-examples/standard_copy7_ground-1.i[816,829] [2024-11-14 05:36:33,950 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 05:36:33,963 INFO L200 MainTranslator]: Completed pre-run [2024-11-14 05:36:33,977 WARN L250 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_b0ffd2f9-1eba-40d9-9e9a-d740b9e32243/sv-benchmarks/c/array-examples/standard_copy7_ground-1.i[816,829] [2024-11-14 05:36:34,009 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 05:36:34,033 INFO L204 MainTranslator]: Completed translation [2024-11-14 05:36:34,034 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:36:34 WrapperNode [2024-11-14 05:36:34,034 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-14 05:36:34,036 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-14 05:36:34,036 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-14 05:36:34,036 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-14 05:36:34,044 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:36:34" (1/1) ... [2024-11-14 05:36:34,053 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:36:34" (1/1) ... [2024-11-14 05:36:34,091 INFO L138 Inliner]: procedures = 16, calls = 49, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 155 [2024-11-14 05:36:34,091 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-14 05:36:34,092 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-14 05:36:34,092 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-14 05:36:34,092 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-14 05:36:34,103 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:36:34" (1/1) ... [2024-11-14 05:36:34,103 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:36:34" (1/1) ... [2024-11-14 05:36:34,110 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:36:34" (1/1) ... [2024-11-14 05:36:34,110 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:36:34" (1/1) ... [2024-11-14 05:36:34,123 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:36:34" (1/1) ... [2024-11-14 05:36:34,136 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:36:34" (1/1) ... [2024-11-14 05:36:34,138 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:36:34" (1/1) ... [2024-11-14 05:36:34,139 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:36:34" (1/1) ... [2024-11-14 05:36:34,145 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-14 05:36:34,146 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-14 05:36:34,146 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-14 05:36:34,150 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-14 05:36:34,151 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:36:34" (1/1) ... [2024-11-14 05:36:34,165 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 05:36:34,189 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0ffd2f9-1eba-40d9-9e9a-d740b9e32243/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:36:34,204 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0ffd2f9-1eba-40d9-9e9a-d740b9e32243/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-14 05:36:34,207 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0ffd2f9-1eba-40d9-9e9a-d740b9e32243/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-14 05:36:34,232 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-14 05:36:34,232 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-14 05:36:34,232 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-14 05:36:34,232 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-11-14 05:36:34,232 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-14 05:36:34,233 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-14 05:36:34,233 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-11-14 05:36:34,233 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-14 05:36:34,359 INFO L238 CfgBuilder]: Building ICFG [2024-11-14 05:36:34,361 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-14 05:36:34,757 INFO L? ?]: Removed 16 outVars from TransFormulas that were not future-live. [2024-11-14 05:36:34,757 INFO L287 CfgBuilder]: Performing block encoding [2024-11-14 05:36:34,855 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-14 05:36:34,855 INFO L316 CfgBuilder]: Removed 9 assume(true) statements. [2024-11-14 05:36:34,856 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 05:36:34 BoogieIcfgContainer [2024-11-14 05:36:34,856 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-14 05:36:34,859 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-14 05:36:34,860 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-14 05:36:34,866 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-14 05:36:34,867 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.11 05:36:33" (1/3) ... [2024-11-14 05:36:34,868 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7fad5807 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 05:36:34, skipping insertion in model container [2024-11-14 05:36:34,868 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:36:34" (2/3) ... [2024-11-14 05:36:34,868 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7fad5807 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 05:36:34, skipping insertion in model container [2024-11-14 05:36:34,869 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 05:36:34" (3/3) ... [2024-11-14 05:36:34,870 INFO L112 eAbstractionObserver]: Analyzing ICFG standard_copy7_ground-1.i [2024-11-14 05:36:34,890 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-14 05:36:34,892 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG standard_copy7_ground-1.i that has 1 procedures, 15 locations, 1 initial locations, 9 loop locations, and 1 error locations. [2024-11-14 05:36:34,978 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-14 05:36:35,000 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@2de2efce, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-14 05:36:35,001 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-14 05:36:35,007 INFO L276 IsEmpty]: Start isEmpty. Operand has 15 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 14 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:36:35,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-14 05:36:35,023 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:36:35,024 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:36:35,025 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 05:36:35,031 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:36:35,032 INFO L85 PathProgramCache]: Analyzing trace with hash 1614890773, now seen corresponding path program 1 times [2024-11-14 05:36:35,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:36:35,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740195534] [2024-11-14 05:36:35,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:36:35,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:36:35,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:36:35,444 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:36:35,444 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:36:35,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740195534] [2024-11-14 05:36:35,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1740195534] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 05:36:35,450 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 05:36:35,450 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-14 05:36:35,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681262878] [2024-11-14 05:36:35,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:36:35,458 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 05:36:35,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:36:35,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 05:36:35,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 05:36:35,489 INFO L87 Difference]: Start difference. First operand has 15 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 14 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:36:35,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:36:35,577 INFO L93 Difference]: Finished difference Result 29 states and 47 transitions. [2024-11-14 05:36:35,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 05:36:35,581 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2024-11-14 05:36:35,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:36:35,589 INFO L225 Difference]: With dead ends: 29 [2024-11-14 05:36:35,589 INFO L226 Difference]: Without dead ends: 15 [2024-11-14 05:36:35,596 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 05:36:35,600 INFO L432 NwaCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 05:36:35,601 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 24 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 05:36:35,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2024-11-14 05:36:35,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2024-11-14 05:36:35,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.6428571428571428) internal successors, (23), 14 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:36:35,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 23 transitions. [2024-11-14 05:36:35,643 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 23 transitions. Word has length 12 [2024-11-14 05:36:35,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:36:35,644 INFO L471 AbstractCegarLoop]: Abstraction has 15 states and 23 transitions. [2024-11-14 05:36:35,644 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:36:35,644 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 23 transitions. [2024-11-14 05:36:35,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-14 05:36:35,645 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:36:35,645 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:36:35,645 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-14 05:36:35,646 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 05:36:35,646 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:36:35,647 INFO L85 PathProgramCache]: Analyzing trace with hash 999968421, now seen corresponding path program 1 times [2024-11-14 05:36:35,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:36:35,647 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1517266825] [2024-11-14 05:36:35,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:36:35,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:36:35,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:36:35,857 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:36:35,858 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:36:35,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1517266825] [2024-11-14 05:36:35,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1517266825] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:36:35,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [826375436] [2024-11-14 05:36:35,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:36:35,859 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:36:35,859 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0ffd2f9-1eba-40d9-9e9a-d740b9e32243/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:36:35,864 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0ffd2f9-1eba-40d9-9e9a-d740b9e32243/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:36:35,866 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0ffd2f9-1eba-40d9-9e9a-d740b9e32243/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-14 05:36:36,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:36:36,050 INFO L255 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-14 05:36:36,057 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:36:36,087 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-14 05:36:36,087 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 05:36:36,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [826375436] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 05:36:36,090 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-14 05:36:36,090 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2024-11-14 05:36:36,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788611622] [2024-11-14 05:36:36,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:36:36,092 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 05:36:36,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:36:36,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 05:36:36,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-14 05:36:36,095 INFO L87 Difference]: Start difference. First operand 15 states and 23 transitions. Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:36:36,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:36:36,216 INFO L93 Difference]: Finished difference Result 33 states and 54 transitions. [2024-11-14 05:36:36,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 05:36:36,217 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2024-11-14 05:36:36,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:36:36,218 INFO L225 Difference]: With dead ends: 33 [2024-11-14 05:36:36,220 INFO L226 Difference]: Without dead ends: 22 [2024-11-14 05:36:36,220 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-14 05:36:36,221 INFO L432 NwaCegarLoop]: 6 mSDtfsCounter, 0 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 05:36:36,222 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 12 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 05:36:36,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2024-11-14 05:36:36,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2024-11-14 05:36:36,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.4285714285714286) internal successors, (30), 21 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:36:36,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 30 transitions. [2024-11-14 05:36:36,228 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 30 transitions. Word has length 13 [2024-11-14 05:36:36,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:36:36,229 INFO L471 AbstractCegarLoop]: Abstraction has 22 states and 30 transitions. [2024-11-14 05:36:36,229 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:36:36,229 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 30 transitions. [2024-11-14 05:36:36,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-14 05:36:36,230 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:36:36,230 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:36:36,251 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0ffd2f9-1eba-40d9-9e9a-d740b9e32243/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-14 05:36:36,434 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0ffd2f9-1eba-40d9-9e9a-d740b9e32243/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:36:36,434 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 05:36:36,434 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:36:36,435 INFO L85 PathProgramCache]: Analyzing trace with hash 1352637165, now seen corresponding path program 1 times [2024-11-14 05:36:36,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:36:36,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [594712479] [2024-11-14 05:36:36,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:36:36,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:36:36,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:36:36,658 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-14 05:36:36,658 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:36:36,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [594712479] [2024-11-14 05:36:36,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [594712479] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:36:36,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [928998469] [2024-11-14 05:36:36,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:36:36,659 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:36:36,659 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0ffd2f9-1eba-40d9-9e9a-d740b9e32243/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:36:36,662 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0ffd2f9-1eba-40d9-9e9a-d740b9e32243/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:36:36,668 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0ffd2f9-1eba-40d9-9e9a-d740b9e32243/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-14 05:36:36,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:36:36,880 INFO L255 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-14 05:36:36,881 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:36:36,922 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-14 05:36:36,922 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:36:36,970 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-14 05:36:36,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [928998469] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:36:36,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [175324932] [2024-11-14 05:36:36,997 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2024-11-14 05:36:36,998 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 05:36:37,001 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 05:36:37,007 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 05:36:37,008 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 05:36:39,500 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 05:36:40,350 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '353#(and (not (= (select (select |#memory_int| |ULTIMATE.start_main_~#a1~0#1.base|) 0) (select (select |#memory_int| |ULTIMATE.start_main_~#a8~0#1.base|) 0))) (= |ULTIMATE.start_main_~#a5~0#1.offset| 0) (<= 1 |#StackHeapBarrier|) (<= 2 |ULTIMATE.start_main_~#a8~0#1.base|) (<= 2 |ULTIMATE.start_main_~#a5~0#1.base|) (<= 2 |ULTIMATE.start_main_~#a2~0#1.base|) (<= 2 |ULTIMATE.start_main_~#a3~0#1.base|) (= |ULTIMATE.start_main_~#a3~0#1.offset| 0) (<= 2 |ULTIMATE.start_main_~#a1~0#1.base|) (= |ULTIMATE.start_main_~#a1~0#1.offset| 0) (<= 2 |ULTIMATE.start_main_~#a6~0#1.base|) (= |ULTIMATE.start_main_~#a6~0#1.offset| 0) (<= 2 |ULTIMATE.start_main_~#a4~0#1.base|) (= |ULTIMATE.start_main_~#a2~0#1.offset| 0) (= |ULTIMATE.start_main_~#a8~0#1.offset| 0) (<= 2 |ULTIMATE.start_main_~#a7~0#1.base|) (= |ULTIMATE.start_main_~#a7~0#1.offset| 0) (= |ULTIMATE.start_main_~#a4~0#1.offset| 0) (= |ULTIMATE.start_main_~x~0#1| 0))' at error location [2024-11-14 05:36:40,351 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 05:36:40,351 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 05:36:40,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2024-11-14 05:36:40,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296330043] [2024-11-14 05:36:40,351 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 05:36:40,352 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-14 05:36:40,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:36:40,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-14 05:36:40,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-11-14 05:36:40,353 INFO L87 Difference]: Start difference. First operand 22 states and 30 transitions. Second operand has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 6 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:36:40,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:36:40,430 INFO L93 Difference]: Finished difference Result 44 states and 62 transitions. [2024-11-14 05:36:40,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-14 05:36:40,432 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 6 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2024-11-14 05:36:40,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:36:40,433 INFO L225 Difference]: With dead ends: 44 [2024-11-14 05:36:40,433 INFO L226 Difference]: Without dead ends: 25 [2024-11-14 05:36:40,434 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 45 SyntacticMatches, 6 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-11-14 05:36:40,435 INFO L432 NwaCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 05:36:40,436 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 48 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 05:36:40,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2024-11-14 05:36:40,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2024-11-14 05:36:40,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 24 states have (on average 1.375) internal successors, (33), 24 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:36:40,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 33 transitions. [2024-11-14 05:36:40,441 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 33 transitions. Word has length 20 [2024-11-14 05:36:40,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:36:40,442 INFO L471 AbstractCegarLoop]: Abstraction has 25 states and 33 transitions. [2024-11-14 05:36:40,442 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 6 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:36:40,442 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 33 transitions. [2024-11-14 05:36:40,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-14 05:36:40,443 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:36:40,443 INFO L215 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:36:40,468 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0ffd2f9-1eba-40d9-9e9a-d740b9e32243/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-14 05:36:40,644 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0ffd2f9-1eba-40d9-9e9a-d740b9e32243/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:36:40,644 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 05:36:40,645 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:36:40,645 INFO L85 PathProgramCache]: Analyzing trace with hash -1907400579, now seen corresponding path program 2 times [2024-11-14 05:36:40,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:36:40,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [401037540] [2024-11-14 05:36:40,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:36:40,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:36:40,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:36:40,925 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-14 05:36:40,925 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:36:40,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [401037540] [2024-11-14 05:36:40,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [401037540] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:36:40,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2138987099] [2024-11-14 05:36:40,926 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-14 05:36:40,926 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:36:40,926 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0ffd2f9-1eba-40d9-9e9a-d740b9e32243/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:36:40,929 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0ffd2f9-1eba-40d9-9e9a-d740b9e32243/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:36:40,932 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0ffd2f9-1eba-40d9-9e9a-d740b9e32243/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-14 05:36:41,109 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-14 05:36:41,109 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 05:36:41,112 INFO L255 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-14 05:36:41,113 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:36:41,129 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-14 05:36:41,129 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:36:41,153 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-14 05:36:41,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2138987099] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:36:41,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [86749881] [2024-11-14 05:36:41,158 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2024-11-14 05:36:41,158 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 05:36:41,159 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 05:36:41,159 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 05:36:41,159 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 05:36:42,343 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 05:36:43,207 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '621#(and (not (= (select (select |#memory_int| |ULTIMATE.start_main_~#a1~0#1.base|) 0) (select (select |#memory_int| |ULTIMATE.start_main_~#a8~0#1.base|) 0))) (= |ULTIMATE.start_main_~#a5~0#1.offset| 0) (<= 1 |#StackHeapBarrier|) (<= 2 |ULTIMATE.start_main_~#a8~0#1.base|) (<= 2 |ULTIMATE.start_main_~#a5~0#1.base|) (<= 2 |ULTIMATE.start_main_~#a2~0#1.base|) (<= 2 |ULTIMATE.start_main_~#a3~0#1.base|) (= |ULTIMATE.start_main_~#a3~0#1.offset| 0) (<= 2 |ULTIMATE.start_main_~#a1~0#1.base|) (= |ULTIMATE.start_main_~#a1~0#1.offset| 0) (<= 2 |ULTIMATE.start_main_~#a6~0#1.base|) (= |ULTIMATE.start_main_~#a6~0#1.offset| 0) (<= 2 |ULTIMATE.start_main_~#a4~0#1.base|) (= |ULTIMATE.start_main_~#a2~0#1.offset| 0) (= |ULTIMATE.start_main_~#a8~0#1.offset| 0) (<= 2 |ULTIMATE.start_main_~#a7~0#1.base|) (= |ULTIMATE.start_main_~#a7~0#1.offset| 0) (= |ULTIMATE.start_main_~#a4~0#1.offset| 0) (= |ULTIMATE.start_main_~x~0#1| 0))' at error location [2024-11-14 05:36:43,207 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 05:36:43,207 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 05:36:43,208 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-11-14 05:36:43,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851849463] [2024-11-14 05:36:43,209 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 05:36:43,210 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-14 05:36:43,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:36:43,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-14 05:36:43,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-11-14 05:36:43,213 INFO L87 Difference]: Start difference. First operand 25 states and 33 transitions. Second operand has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:36:43,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:36:43,430 INFO L93 Difference]: Finished difference Result 63 states and 98 transitions. [2024-11-14 05:36:43,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-14 05:36:43,431 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2024-11-14 05:36:43,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:36:43,432 INFO L225 Difference]: With dead ends: 63 [2024-11-14 05:36:43,433 INFO L226 Difference]: Without dead ends: 46 [2024-11-14 05:36:43,434 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 51 SyntacticMatches, 10 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-11-14 05:36:43,435 INFO L432 NwaCegarLoop]: 6 mSDtfsCounter, 0 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-14 05:36:43,437 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 24 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-14 05:36:43,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2024-11-14 05:36:43,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2024-11-14 05:36:43,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 45 states have (on average 1.2) internal successors, (54), 45 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:36:43,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 54 transitions. [2024-11-14 05:36:43,452 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 54 transitions. Word has length 23 [2024-11-14 05:36:43,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:36:43,452 INFO L471 AbstractCegarLoop]: Abstraction has 46 states and 54 transitions. [2024-11-14 05:36:43,452 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:36:43,452 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 54 transitions. [2024-11-14 05:36:43,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-11-14 05:36:43,453 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:36:43,454 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:36:43,470 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0ffd2f9-1eba-40d9-9e9a-d740b9e32243/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-14 05:36:43,654 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0ffd2f9-1eba-40d9-9e9a-d740b9e32243/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:36:43,655 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 05:36:43,655 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:36:43,655 INFO L85 PathProgramCache]: Analyzing trace with hash 692900117, now seen corresponding path program 3 times [2024-11-14 05:36:43,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:36:43,655 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630101946] [2024-11-14 05:36:43,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:36:43,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:36:43,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:36:44,132 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-11-14 05:36:44,132 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:36:44,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1630101946] [2024-11-14 05:36:44,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1630101946] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:36:44,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [988995474] [2024-11-14 05:36:44,132 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-14 05:36:44,133 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:36:44,133 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0ffd2f9-1eba-40d9-9e9a-d740b9e32243/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:36:44,140 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0ffd2f9-1eba-40d9-9e9a-d740b9e32243/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:36:44,142 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0ffd2f9-1eba-40d9-9e9a-d740b9e32243/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-14 05:36:44,370 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-14 05:36:44,371 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 05:36:44,374 INFO L255 TraceCheckSpWp]: Trace formula consists of 389 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-14 05:36:44,378 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:36:44,412 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-11-14 05:36:44,415 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:36:44,518 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-11-14 05:36:44,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [988995474] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:36:44,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [317464093] [2024-11-14 05:36:44,522 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2024-11-14 05:36:44,525 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 05:36:44,526 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 05:36:44,526 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 05:36:44,526 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 05:36:45,680 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 05:36:46,728 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1101#(and (not (= (select (select |#memory_int| |ULTIMATE.start_main_~#a1~0#1.base|) 0) (select (select |#memory_int| |ULTIMATE.start_main_~#a8~0#1.base|) 0))) (= |ULTIMATE.start_main_~#a5~0#1.offset| 0) (<= 1 |#StackHeapBarrier|) (<= 2 |ULTIMATE.start_main_~#a8~0#1.base|) (<= 2 |ULTIMATE.start_main_~#a5~0#1.base|) (<= 2 |ULTIMATE.start_main_~#a2~0#1.base|) (<= 2 |ULTIMATE.start_main_~#a3~0#1.base|) (= |ULTIMATE.start_main_~#a3~0#1.offset| 0) (<= 2 |ULTIMATE.start_main_~#a1~0#1.base|) (= |ULTIMATE.start_main_~#a1~0#1.offset| 0) (<= 2 |ULTIMATE.start_main_~#a6~0#1.base|) (= |ULTIMATE.start_main_~#a6~0#1.offset| 0) (<= 2 |ULTIMATE.start_main_~#a4~0#1.base|) (= |ULTIMATE.start_main_~#a2~0#1.offset| 0) (= |ULTIMATE.start_main_~#a8~0#1.offset| 0) (<= 2 |ULTIMATE.start_main_~#a7~0#1.base|) (= |ULTIMATE.start_main_~#a7~0#1.offset| 0) (= |ULTIMATE.start_main_~#a4~0#1.offset| 0) (= |ULTIMATE.start_main_~x~0#1| 0))' at error location [2024-11-14 05:36:46,728 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 05:36:46,728 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 05:36:46,728 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2024-11-14 05:36:46,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820373519] [2024-11-14 05:36:46,729 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 05:36:46,729 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-14 05:36:46,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:36:46,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-14 05:36:46,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2024-11-14 05:36:46,730 INFO L87 Difference]: Start difference. First operand 46 states and 54 transitions. Second operand has 13 states, 13 states have (on average 2.3846153846153846) internal successors, (31), 12 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:36:46,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:36:46,809 INFO L93 Difference]: Finished difference Result 92 states and 113 transitions. [2024-11-14 05:36:46,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-14 05:36:46,810 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.3846153846153846) internal successors, (31), 12 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2024-11-14 05:36:46,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:36:46,811 INFO L225 Difference]: With dead ends: 92 [2024-11-14 05:36:46,811 INFO L226 Difference]: Without dead ends: 52 [2024-11-14 05:36:46,812 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 100 SyntacticMatches, 20 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 392 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2024-11-14 05:36:46,813 INFO L432 NwaCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 05:36:46,813 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 60 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 05:36:46,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2024-11-14 05:36:46,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2024-11-14 05:36:46,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 51 states have (on average 1.1764705882352942) internal successors, (60), 51 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:36:46,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 60 transitions. [2024-11-14 05:36:46,822 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 60 transitions. Word has length 44 [2024-11-14 05:36:46,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:36:46,822 INFO L471 AbstractCegarLoop]: Abstraction has 52 states and 60 transitions. [2024-11-14 05:36:46,822 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.3846153846153846) internal successors, (31), 12 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:36:46,822 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 60 transitions. [2024-11-14 05:36:46,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-11-14 05:36:46,824 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:36:46,824 INFO L215 NwaCegarLoop]: trace histogram [10, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:36:46,844 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0ffd2f9-1eba-40d9-9e9a-d740b9e32243/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-14 05:36:47,027 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0ffd2f9-1eba-40d9-9e9a-d740b9e32243/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:36:47,028 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 05:36:47,028 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:36:47,028 INFO L85 PathProgramCache]: Analyzing trace with hash -1919277291, now seen corresponding path program 4 times [2024-11-14 05:36:47,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:36:47,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [427565576] [2024-11-14 05:36:47,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:36:47,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:36:47,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:36:47,644 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-11-14 05:36:47,644 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:36:47,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [427565576] [2024-11-14 05:36:47,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [427565576] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:36:47,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1644893404] [2024-11-14 05:36:47,645 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-14 05:36:47,645 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:36:47,645 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0ffd2f9-1eba-40d9-9e9a-d740b9e32243/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:36:47,647 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0ffd2f9-1eba-40d9-9e9a-d740b9e32243/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:36:47,650 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0ffd2f9-1eba-40d9-9e9a-d740b9e32243/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-14 05:36:47,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:36:47,871 INFO L255 TraceCheckSpWp]: Trace formula consists of 473 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-14 05:36:47,873 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:36:47,910 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-11-14 05:36:47,911 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:36:48,197 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-11-14 05:36:48,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1644893404] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:36:48,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1251519307] [2024-11-14 05:36:48,199 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2024-11-14 05:36:48,200 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 05:36:48,200 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 05:36:48,200 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 05:36:48,200 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 05:36:49,147 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 05:36:50,388 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1699#(and (not (= (select (select |#memory_int| |ULTIMATE.start_main_~#a1~0#1.base|) 0) (select (select |#memory_int| |ULTIMATE.start_main_~#a8~0#1.base|) 0))) (= |ULTIMATE.start_main_~#a5~0#1.offset| 0) (<= 1 |#StackHeapBarrier|) (<= 2 |ULTIMATE.start_main_~#a8~0#1.base|) (<= 2 |ULTIMATE.start_main_~#a5~0#1.base|) (<= 2 |ULTIMATE.start_main_~#a2~0#1.base|) (<= 2 |ULTIMATE.start_main_~#a3~0#1.base|) (= |ULTIMATE.start_main_~#a3~0#1.offset| 0) (<= 2 |ULTIMATE.start_main_~#a1~0#1.base|) (= |ULTIMATE.start_main_~#a1~0#1.offset| 0) (<= 2 |ULTIMATE.start_main_~#a6~0#1.base|) (= |ULTIMATE.start_main_~#a6~0#1.offset| 0) (<= 2 |ULTIMATE.start_main_~#a4~0#1.base|) (= |ULTIMATE.start_main_~#a2~0#1.offset| 0) (= |ULTIMATE.start_main_~#a8~0#1.offset| 0) (<= 2 |ULTIMATE.start_main_~#a7~0#1.base|) (= |ULTIMATE.start_main_~#a7~0#1.offset| 0) (= |ULTIMATE.start_main_~#a4~0#1.offset| 0) (= |ULTIMATE.start_main_~x~0#1| 0))' at error location [2024-11-14 05:36:50,388 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 05:36:50,388 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 05:36:50,389 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 24 [2024-11-14 05:36:50,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377808813] [2024-11-14 05:36:50,389 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 05:36:50,389 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-14 05:36:50,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:36:50,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-14 05:36:50,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=312, Invalid=558, Unknown=0, NotChecked=0, Total=870 [2024-11-14 05:36:50,392 INFO L87 Difference]: Start difference. First operand 52 states and 60 transitions. Second operand has 25 states, 25 states have (on average 1.72) internal successors, (43), 24 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:36:50,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:36:50,481 INFO L93 Difference]: Finished difference Result 104 states and 131 transitions. [2024-11-14 05:36:50,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-14 05:36:50,482 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 1.72) internal successors, (43), 24 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2024-11-14 05:36:50,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:36:50,483 INFO L225 Difference]: With dead ends: 104 [2024-11-14 05:36:50,484 INFO L226 Difference]: Without dead ends: 64 [2024-11-14 05:36:50,485 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 112 SyntacticMatches, 20 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 866 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=312, Invalid=558, Unknown=0, NotChecked=0, Total=870 [2024-11-14 05:36:50,486 INFO L432 NwaCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 05:36:50,486 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 36 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 05:36:50,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2024-11-14 05:36:50,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2024-11-14 05:36:50,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 63 states have (on average 1.1428571428571428) internal successors, (72), 63 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:36:50,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 72 transitions. [2024-11-14 05:36:50,495 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 72 transitions. Word has length 50 [2024-11-14 05:36:50,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:36:50,496 INFO L471 AbstractCegarLoop]: Abstraction has 64 states and 72 transitions. [2024-11-14 05:36:50,496 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 1.72) internal successors, (43), 24 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:36:50,496 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 72 transitions. [2024-11-14 05:36:50,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-11-14 05:36:50,498 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:36:50,498 INFO L215 NwaCegarLoop]: trace histogram [22, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:36:50,518 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0ffd2f9-1eba-40d9-9e9a-d740b9e32243/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-14 05:36:50,699 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0ffd2f9-1eba-40d9-9e9a-d740b9e32243/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-14 05:36:50,699 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 05:36:50,700 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:36:50,700 INFO L85 PathProgramCache]: Analyzing trace with hash 2030785301, now seen corresponding path program 5 times [2024-11-14 05:36:50,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:36:50,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1273241391] [2024-11-14 05:36:50,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:36:50,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:36:50,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:36:52,101 INFO L134 CoverageAnalysis]: Checked inductivity of 323 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-11-14 05:36:52,102 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:36:52,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1273241391] [2024-11-14 05:36:52,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1273241391] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:36:52,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2090963918] [2024-11-14 05:36:52,102 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-14 05:36:52,102 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:36:52,103 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0ffd2f9-1eba-40d9-9e9a-d740b9e32243/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:36:52,104 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0ffd2f9-1eba-40d9-9e9a-d740b9e32243/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:36:52,106 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0ffd2f9-1eba-40d9-9e9a-d740b9e32243/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-14 05:36:52,615 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-14 05:36:52,615 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 05:36:52,618 INFO L255 TraceCheckSpWp]: Trace formula consists of 389 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-14 05:36:52,623 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:36:52,759 INFO L134 CoverageAnalysis]: Checked inductivity of 323 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 313 trivial. 0 not checked. [2024-11-14 05:36:52,759 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:36:52,900 INFO L134 CoverageAnalysis]: Checked inductivity of 323 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 313 trivial. 0 not checked. [2024-11-14 05:36:52,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2090963918] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:36:52,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [895053233] [2024-11-14 05:36:52,903 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2024-11-14 05:36:52,903 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 05:36:52,903 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 05:36:52,903 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 05:36:52,904 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 05:36:53,911 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 05:36:56,009 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2427#(and (not (= (select (select |#memory_int| |ULTIMATE.start_main_~#a1~0#1.base|) 0) (select (select |#memory_int| |ULTIMATE.start_main_~#a8~0#1.base|) 0))) (= |ULTIMATE.start_main_~#a5~0#1.offset| 0) (<= 1 |#StackHeapBarrier|) (<= 2 |ULTIMATE.start_main_~#a8~0#1.base|) (<= 2 |ULTIMATE.start_main_~#a5~0#1.base|) (<= 2 |ULTIMATE.start_main_~#a2~0#1.base|) (<= 2 |ULTIMATE.start_main_~#a3~0#1.base|) (= |ULTIMATE.start_main_~#a3~0#1.offset| 0) (<= 2 |ULTIMATE.start_main_~#a1~0#1.base|) (= |ULTIMATE.start_main_~#a1~0#1.offset| 0) (<= 2 |ULTIMATE.start_main_~#a6~0#1.base|) (= |ULTIMATE.start_main_~#a6~0#1.offset| 0) (<= 2 |ULTIMATE.start_main_~#a4~0#1.base|) (= |ULTIMATE.start_main_~#a2~0#1.offset| 0) (= |ULTIMATE.start_main_~#a8~0#1.offset| 0) (<= 2 |ULTIMATE.start_main_~#a7~0#1.base|) (= |ULTIMATE.start_main_~#a7~0#1.offset| 0) (= |ULTIMATE.start_main_~#a4~0#1.offset| 0) (= |ULTIMATE.start_main_~x~0#1| 0))' at error location [2024-11-14 05:36:56,009 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 05:36:56,009 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 05:36:56,009 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 7, 7] total 35 [2024-11-14 05:36:56,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255439057] [2024-11-14 05:36:56,010 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 05:36:56,011 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-11-14 05:36:56,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:36:56,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-11-14 05:36:56,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=377, Invalid=1183, Unknown=0, NotChecked=0, Total=1560 [2024-11-14 05:36:56,014 INFO L87 Difference]: Start difference. First operand 64 states and 72 transitions. Second operand has 35 states, 35 states have (on average 1.6857142857142857) internal successors, (59), 35 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:36:56,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:36:56,438 INFO L93 Difference]: Finished difference Result 147 states and 205 transitions. [2024-11-14 05:36:56,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2024-11-14 05:36:56,438 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 1.6857142857142857) internal successors, (59), 35 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2024-11-14 05:36:56,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:36:56,440 INFO L225 Difference]: With dead ends: 147 [2024-11-14 05:36:56,440 INFO L226 Difference]: Without dead ends: 107 [2024-11-14 05:36:56,441 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 145 SyntacticMatches, 25 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1271 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=377, Invalid=1183, Unknown=0, NotChecked=0, Total=1560 [2024-11-14 05:36:56,442 INFO L432 NwaCegarLoop]: 5 mSDtfsCounter, 0 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 187 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 345 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 187 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-14 05:36:56,442 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 25 Invalid, 345 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [187 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-14 05:36:56,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2024-11-14 05:36:56,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 107. [2024-11-14 05:36:56,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 106 states have (on average 1.0849056603773586) internal successors, (115), 106 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:36:56,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 115 transitions. [2024-11-14 05:36:56,462 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 115 transitions. Word has length 62 [2024-11-14 05:36:56,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:36:56,466 INFO L471 AbstractCegarLoop]: Abstraction has 107 states and 115 transitions. [2024-11-14 05:36:56,466 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 1.6857142857142857) internal successors, (59), 35 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:36:56,466 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 115 transitions. [2024-11-14 05:36:56,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2024-11-14 05:36:56,468 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:36:56,468 INFO L215 NwaCegarLoop]: trace histogram [23, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:36:56,498 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0ffd2f9-1eba-40d9-9e9a-d740b9e32243/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-14 05:36:56,669 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0ffd2f9-1eba-40d9-9e9a-d740b9e32243/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-11-14 05:36:56,669 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 05:36:56,670 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:36:56,670 INFO L85 PathProgramCache]: Analyzing trace with hash -789693531, now seen corresponding path program 6 times [2024-11-14 05:36:56,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:36:56,670 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586956219] [2024-11-14 05:36:56,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:36:56,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:36:56,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:36:58,438 INFO L134 CoverageAnalysis]: Checked inductivity of 661 backedges. 0 proven. 276 refuted. 0 times theorem prover too weak. 385 trivial. 0 not checked. [2024-11-14 05:36:58,439 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:36:58,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586956219] [2024-11-14 05:36:58,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1586956219] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:36:58,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1239237905] [2024-11-14 05:36:58,439 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-14 05:36:58,439 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:36:58,439 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0ffd2f9-1eba-40d9-9e9a-d740b9e32243/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:36:58,442 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0ffd2f9-1eba-40d9-9e9a-d740b9e32243/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:36:58,445 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0ffd2f9-1eba-40d9-9e9a-d740b9e32243/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-14 05:36:58,893 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-14 05:36:58,893 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 05:36:58,899 INFO L255 TraceCheckSpWp]: Trace formula consists of 949 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-14 05:36:58,906 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:36:58,985 INFO L134 CoverageAnalysis]: Checked inductivity of 661 backedges. 0 proven. 276 refuted. 0 times theorem prover too weak. 385 trivial. 0 not checked. [2024-11-14 05:36:58,985 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:37:00,088 INFO L134 CoverageAnalysis]: Checked inductivity of 661 backedges. 0 proven. 276 refuted. 0 times theorem prover too weak. 385 trivial. 0 not checked. [2024-11-14 05:37:00,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1239237905] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:37:00,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2088087836] [2024-11-14 05:37:00,090 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2024-11-14 05:37:00,090 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 05:37:00,091 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 05:37:00,091 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 05:37:00,091 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 05:37:01,018 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 05:37:04,078 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '3601#(and (not (= (select (select |#memory_int| |ULTIMATE.start_main_~#a1~0#1.base|) 0) (select (select |#memory_int| |ULTIMATE.start_main_~#a8~0#1.base|) 0))) (= |ULTIMATE.start_main_~#a5~0#1.offset| 0) (<= 1 |#StackHeapBarrier|) (<= 2 |ULTIMATE.start_main_~#a8~0#1.base|) (<= 2 |ULTIMATE.start_main_~#a5~0#1.base|) (<= 2 |ULTIMATE.start_main_~#a2~0#1.base|) (<= 2 |ULTIMATE.start_main_~#a3~0#1.base|) (= |ULTIMATE.start_main_~#a3~0#1.offset| 0) (<= 2 |ULTIMATE.start_main_~#a1~0#1.base|) (= |ULTIMATE.start_main_~#a1~0#1.offset| 0) (<= 2 |ULTIMATE.start_main_~#a6~0#1.base|) (= |ULTIMATE.start_main_~#a6~0#1.offset| 0) (<= 2 |ULTIMATE.start_main_~#a4~0#1.base|) (= |ULTIMATE.start_main_~#a2~0#1.offset| 0) (= |ULTIMATE.start_main_~#a8~0#1.offset| 0) (<= 2 |ULTIMATE.start_main_~#a7~0#1.base|) (= |ULTIMATE.start_main_~#a7~0#1.offset| 0) (= |ULTIMATE.start_main_~#a4~0#1.offset| 0) (= |ULTIMATE.start_main_~x~0#1| 0))' at error location [2024-11-14 05:37:04,078 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 05:37:04,078 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 05:37:04,078 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 50 [2024-11-14 05:37:04,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105945240] [2024-11-14 05:37:04,079 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 05:37:04,079 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2024-11-14 05:37:04,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:37:04,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2024-11-14 05:37:04,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1287, Invalid=1793, Unknown=0, NotChecked=0, Total=3080 [2024-11-14 05:37:04,083 INFO L87 Difference]: Start difference. First operand 107 states and 115 transitions. Second operand has 51 states, 51 states have (on average 1.3529411764705883) internal successors, (69), 50 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:37:04,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:37:04,228 INFO L93 Difference]: Finished difference Result 214 states and 254 transitions. [2024-11-14 05:37:04,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2024-11-14 05:37:04,229 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 1.3529411764705883) internal successors, (69), 50 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 105 [2024-11-14 05:37:04,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:37:04,231 INFO L225 Difference]: With dead ends: 214 [2024-11-14 05:37:04,231 INFO L226 Difference]: Without dead ends: 132 [2024-11-14 05:37:04,232 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 338 GetRequests, 229 SyntacticMatches, 55 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4413 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=1287, Invalid=1793, Unknown=0, NotChecked=0, Total=3080 [2024-11-14 05:37:04,233 INFO L432 NwaCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 05:37:04,233 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 48 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 05:37:04,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2024-11-14 05:37:04,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 132. [2024-11-14 05:37:04,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 131 states have (on average 1.0687022900763359) internal successors, (140), 131 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:37:04,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 140 transitions. [2024-11-14 05:37:04,246 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 140 transitions. Word has length 105 [2024-11-14 05:37:04,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:37:04,247 INFO L471 AbstractCegarLoop]: Abstraction has 132 states and 140 transitions. [2024-11-14 05:37:04,247 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 1.3529411764705883) internal successors, (69), 50 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:37:04,247 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 140 transitions. [2024-11-14 05:37:04,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2024-11-14 05:37:04,249 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:37:04,249 INFO L215 NwaCegarLoop]: trace histogram [48, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:37:04,275 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0ffd2f9-1eba-40d9-9e9a-d740b9e32243/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-14 05:37:04,453 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0ffd2f9-1eba-40d9-9e9a-d740b9e32243/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-11-14 05:37:04,454 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 05:37:04,454 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:37:04,454 INFO L85 PathProgramCache]: Analyzing trace with hash 55834133, now seen corresponding path program 7 times [2024-11-14 05:37:04,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:37:04,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2077261179] [2024-11-14 05:37:04,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:37:04,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:37:04,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:37:08,569 INFO L134 CoverageAnalysis]: Checked inductivity of 1561 backedges. 0 proven. 1176 refuted. 0 times theorem prover too weak. 385 trivial. 0 not checked. [2024-11-14 05:37:08,570 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:37:08,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2077261179] [2024-11-14 05:37:08,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2077261179] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:37:08,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1584935298] [2024-11-14 05:37:08,570 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-14 05:37:08,570 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:37:08,570 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0ffd2f9-1eba-40d9-9e9a-d740b9e32243/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:37:08,572 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0ffd2f9-1eba-40d9-9e9a-d740b9e32243/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:37:08,573 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0ffd2f9-1eba-40d9-9e9a-d740b9e32243/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-14 05:37:09,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:37:09,182 INFO L255 TraceCheckSpWp]: Trace formula consists of 1299 conjuncts, 50 conjuncts are in the unsatisfiable core [2024-11-14 05:37:09,188 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:37:09,330 INFO L134 CoverageAnalysis]: Checked inductivity of 1561 backedges. 0 proven. 1176 refuted. 0 times theorem prover too weak. 385 trivial. 0 not checked. [2024-11-14 05:37:09,330 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:37:13,332 INFO L134 CoverageAnalysis]: Checked inductivity of 1561 backedges. 0 proven. 1176 refuted. 0 times theorem prover too weak. 385 trivial. 0 not checked. [2024-11-14 05:37:13,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1584935298] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:37:13,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [847505792] [2024-11-14 05:37:13,335 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2024-11-14 05:37:13,335 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 05:37:13,336 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 05:37:13,336 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 05:37:13,336 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 05:37:14,163 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 05:37:18,038 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '5159#(and (not (= (select (select |#memory_int| |ULTIMATE.start_main_~#a1~0#1.base|) 0) (select (select |#memory_int| |ULTIMATE.start_main_~#a8~0#1.base|) 0))) (= |ULTIMATE.start_main_~#a5~0#1.offset| 0) (<= 1 |#StackHeapBarrier|) (<= 2 |ULTIMATE.start_main_~#a8~0#1.base|) (<= 2 |ULTIMATE.start_main_~#a5~0#1.base|) (<= 2 |ULTIMATE.start_main_~#a2~0#1.base|) (<= 2 |ULTIMATE.start_main_~#a3~0#1.base|) (= |ULTIMATE.start_main_~#a3~0#1.offset| 0) (<= 2 |ULTIMATE.start_main_~#a1~0#1.base|) (= |ULTIMATE.start_main_~#a1~0#1.offset| 0) (<= 2 |ULTIMATE.start_main_~#a6~0#1.base|) (= |ULTIMATE.start_main_~#a6~0#1.offset| 0) (<= 2 |ULTIMATE.start_main_~#a4~0#1.base|) (= |ULTIMATE.start_main_~#a2~0#1.offset| 0) (= |ULTIMATE.start_main_~#a8~0#1.offset| 0) (<= 2 |ULTIMATE.start_main_~#a7~0#1.base|) (= |ULTIMATE.start_main_~#a7~0#1.offset| 0) (= |ULTIMATE.start_main_~#a4~0#1.offset| 0) (= |ULTIMATE.start_main_~x~0#1| 0))' at error location [2024-11-14 05:37:18,038 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 05:37:18,039 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 05:37:18,039 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 50, 50] total 100 [2024-11-14 05:37:18,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289235705] [2024-11-14 05:37:18,039 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 05:37:18,040 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 101 states [2024-11-14 05:37:18,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:37:18,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 101 interpolants. [2024-11-14 05:37:18,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5062, Invalid=6068, Unknown=0, NotChecked=0, Total=11130 [2024-11-14 05:37:18,046 INFO L87 Difference]: Start difference. First operand 132 states and 140 transitions. Second operand has 101 states, 101 states have (on average 1.1782178217821782) internal successors, (119), 100 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:37:18,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:37:18,290 INFO L93 Difference]: Finished difference Result 264 states and 329 transitions. [2024-11-14 05:37:18,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2024-11-14 05:37:18,291 INFO L78 Accepts]: Start accepts. Automaton has has 101 states, 101 states have (on average 1.1782178217821782) internal successors, (119), 100 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 130 [2024-11-14 05:37:18,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:37:18,293 INFO L225 Difference]: With dead ends: 264 [2024-11-14 05:37:18,293 INFO L226 Difference]: Without dead ends: 182 [2024-11-14 05:37:18,296 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 438 GetRequests, 301 SyntacticMatches, 33 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5779 ImplicationChecksByTransitivity, 9.3s TimeCoverageRelationStatistics Valid=5062, Invalid=6068, Unknown=0, NotChecked=0, Total=11130 [2024-11-14 05:37:18,296 INFO L432 NwaCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-14 05:37:18,297 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 60 Invalid, 141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-14 05:37:18,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2024-11-14 05:37:18,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 182. [2024-11-14 05:37:18,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 181 states have (on average 1.0497237569060773) internal successors, (190), 181 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:37:18,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 190 transitions. [2024-11-14 05:37:18,314 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 190 transitions. Word has length 130 [2024-11-14 05:37:18,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:37:18,314 INFO L471 AbstractCegarLoop]: Abstraction has 182 states and 190 transitions. [2024-11-14 05:37:18,315 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 101 states, 101 states have (on average 1.1782178217821782) internal successors, (119), 100 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:37:18,315 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 190 transitions. [2024-11-14 05:37:18,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2024-11-14 05:37:18,318 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:37:18,318 INFO L215 NwaCegarLoop]: trace histogram [98, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:37:18,337 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0ffd2f9-1eba-40d9-9e9a-d740b9e32243/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-14 05:37:18,521 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0ffd2f9-1eba-40d9-9e9a-d740b9e32243/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:37:18,522 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 05:37:18,522 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:37:18,522 INFO L85 PathProgramCache]: Analyzing trace with hash -1582819307, now seen corresponding path program 8 times [2024-11-14 05:37:18,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:37:18,522 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937158377] [2024-11-14 05:37:18,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:37:18,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:37:18,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:37:29,808 INFO L134 CoverageAnalysis]: Checked inductivity of 5236 backedges. 0 proven. 4851 refuted. 0 times theorem prover too weak. 385 trivial. 0 not checked. [2024-11-14 05:37:29,809 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:37:29,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [937158377] [2024-11-14 05:37:29,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [937158377] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:37:29,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1350365575] [2024-11-14 05:37:29,810 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-14 05:37:29,810 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:37:29,810 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0ffd2f9-1eba-40d9-9e9a-d740b9e32243/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:37:29,813 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0ffd2f9-1eba-40d9-9e9a-d740b9e32243/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:37:29,818 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0ffd2f9-1eba-40d9-9e9a-d740b9e32243/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-14 05:37:44,192 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2024-11-14 05:37:44,192 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 05:37:44,209 INFO L255 TraceCheckSpWp]: Trace formula consists of 767 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-14 05:37:44,212 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:37:45,023 INFO L134 CoverageAnalysis]: Checked inductivity of 5236 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 5181 trivial. 0 not checked. [2024-11-14 05:37:45,023 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:37:45,818 INFO L134 CoverageAnalysis]: Checked inductivity of 5236 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 5181 trivial. 0 not checked. [2024-11-14 05:37:45,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1350365575] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:37:45,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1734988625] [2024-11-14 05:37:45,820 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2024-11-14 05:37:45,820 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 05:37:45,821 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 05:37:45,821 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 05:37:45,821 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 05:37:46,483 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 05:37:56,403 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '7239#(and (not (= (select (select |#memory_int| |ULTIMATE.start_main_~#a1~0#1.base|) 0) (select (select |#memory_int| |ULTIMATE.start_main_~#a8~0#1.base|) 0))) (= |ULTIMATE.start_main_~#a5~0#1.offset| 0) (<= 1 |#StackHeapBarrier|) (<= 2 |ULTIMATE.start_main_~#a8~0#1.base|) (<= 2 |ULTIMATE.start_main_~#a5~0#1.base|) (<= 2 |ULTIMATE.start_main_~#a2~0#1.base|) (<= 2 |ULTIMATE.start_main_~#a3~0#1.base|) (= |ULTIMATE.start_main_~#a3~0#1.offset| 0) (<= 2 |ULTIMATE.start_main_~#a1~0#1.base|) (= |ULTIMATE.start_main_~#a1~0#1.offset| 0) (<= 2 |ULTIMATE.start_main_~#a6~0#1.base|) (= |ULTIMATE.start_main_~#a6~0#1.offset| 0) (<= 2 |ULTIMATE.start_main_~#a4~0#1.base|) (= |ULTIMATE.start_main_~#a2~0#1.offset| 0) (= |ULTIMATE.start_main_~#a8~0#1.offset| 0) (<= 2 |ULTIMATE.start_main_~#a7~0#1.base|) (= |ULTIMATE.start_main_~#a7~0#1.offset| 0) (= |ULTIMATE.start_main_~#a4~0#1.offset| 0) (= |ULTIMATE.start_main_~x~0#1| 0))' at error location [2024-11-14 05:37:56,403 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 05:37:56,403 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 05:37:56,403 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [100, 13, 13] total 123 [2024-11-14 05:37:56,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128261219] [2024-11-14 05:37:56,404 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 05:37:56,404 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 123 states [2024-11-14 05:37:56,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:37:56,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 123 interpolants. [2024-11-14 05:37:56,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5337, Invalid=10919, Unknown=0, NotChecked=0, Total=16256 [2024-11-14 05:37:56,410 INFO L87 Difference]: Start difference. First operand 182 states and 190 transitions. Second operand has 123 states, 123 states have (on average 1.1626016260162602) internal successors, (143), 123 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:37:57,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:37:57,344 INFO L93 Difference]: Finished difference Result 349 states and 449 transitions. [2024-11-14 05:37:57,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 123 states. [2024-11-14 05:37:57,346 INFO L78 Accepts]: Start accepts. Automaton has has 123 states, 123 states have (on average 1.1626016260162602) internal successors, (143), 123 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 180 [2024-11-14 05:37:57,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:37:57,349 INFO L225 Difference]: With dead ends: 349 [2024-11-14 05:37:57,349 INFO L226 Difference]: Without dead ends: 267 [2024-11-14 05:37:57,358 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 638 GetRequests, 457 SyntacticMatches, 55 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9897 ImplicationChecksByTransitivity, 16.8s TimeCoverageRelationStatistics Valid=5337, Invalid=10919, Unknown=0, NotChecked=0, Total=16256 [2024-11-14 05:37:57,359 INFO L432 NwaCegarLoop]: 5 mSDtfsCounter, 0 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 429 mSolverCounterSat, 385 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 814 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 385 IncrementalHoareTripleChecker+Valid, 429 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-14 05:37:57,360 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 70 Invalid, 814 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [385 Valid, 429 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-14 05:37:57,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2024-11-14 05:37:57,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 267. [2024-11-14 05:37:57,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 267 states, 266 states have (on average 1.0338345864661653) internal successors, (275), 266 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:37:57,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 275 transitions. [2024-11-14 05:37:57,405 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 275 transitions. Word has length 180 [2024-11-14 05:37:57,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:37:57,406 INFO L471 AbstractCegarLoop]: Abstraction has 267 states and 275 transitions. [2024-11-14 05:37:57,406 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 123 states, 123 states have (on average 1.1626016260162602) internal successors, (143), 123 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:37:57,406 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 275 transitions. [2024-11-14 05:37:57,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2024-11-14 05:37:57,412 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:37:57,416 INFO L215 NwaCegarLoop]: trace histogram [99, 22, 22, 22, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:37:57,456 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0ffd2f9-1eba-40d9-9e9a-d740b9e32243/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-14 05:37:57,616 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0ffd2f9-1eba-40d9-9e9a-d740b9e32243/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-14 05:37:57,617 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 05:37:57,617 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:37:57,618 INFO L85 PathProgramCache]: Analyzing trace with hash 1010850213, now seen corresponding path program 9 times [2024-11-14 05:37:57,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:37:57,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1252171651] [2024-11-14 05:37:57,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:37:57,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:37:58,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:38:09,270 INFO L134 CoverageAnalysis]: Checked inductivity of 6721 backedges. 0 proven. 4950 refuted. 0 times theorem prover too weak. 1771 trivial. 0 not checked. [2024-11-14 05:38:09,270 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:38:09,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1252171651] [2024-11-14 05:38:09,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1252171651] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:38:09,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [524461140] [2024-11-14 05:38:09,270 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-14 05:38:09,271 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:38:09,271 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0ffd2f9-1eba-40d9-9e9a-d740b9e32243/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:38:09,273 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0ffd2f9-1eba-40d9-9e9a-d740b9e32243/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:38:09,274 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0ffd2f9-1eba-40d9-9e9a-d740b9e32243/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-14 05:38:10,472 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-14 05:38:10,472 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 05:38:10,485 INFO L255 TraceCheckSpWp]: Trace formula consists of 2601 conjuncts, 101 conjuncts are in the unsatisfiable core [2024-11-14 05:38:10,491 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:38:10,729 INFO L134 CoverageAnalysis]: Checked inductivity of 6721 backedges. 0 proven. 4950 refuted. 0 times theorem prover too weak. 1771 trivial. 0 not checked. [2024-11-14 05:38:10,730 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:38:26,624 INFO L134 CoverageAnalysis]: Checked inductivity of 6721 backedges. 0 proven. 4950 refuted. 0 times theorem prover too weak. 1771 trivial. 0 not checked. [2024-11-14 05:38:26,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [524461140] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:38:26,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1450837683] [2024-11-14 05:38:26,627 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2024-11-14 05:38:26,627 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 05:38:26,627 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 05:38:26,628 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 05:38:26,628 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 05:38:27,430 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 05:38:39,892 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '10249#(and (not (= (select (select |#memory_int| |ULTIMATE.start_main_~#a1~0#1.base|) 0) (select (select |#memory_int| |ULTIMATE.start_main_~#a8~0#1.base|) 0))) (= |ULTIMATE.start_main_~#a5~0#1.offset| 0) (<= 1 |#StackHeapBarrier|) (<= 2 |ULTIMATE.start_main_~#a8~0#1.base|) (<= 2 |ULTIMATE.start_main_~#a5~0#1.base|) (<= 2 |ULTIMATE.start_main_~#a2~0#1.base|) (<= 2 |ULTIMATE.start_main_~#a3~0#1.base|) (= |ULTIMATE.start_main_~#a3~0#1.offset| 0) (<= 2 |ULTIMATE.start_main_~#a1~0#1.base|) (= |ULTIMATE.start_main_~#a1~0#1.offset| 0) (<= 2 |ULTIMATE.start_main_~#a6~0#1.base|) (= |ULTIMATE.start_main_~#a6~0#1.offset| 0) (<= 2 |ULTIMATE.start_main_~#a4~0#1.base|) (= |ULTIMATE.start_main_~#a2~0#1.offset| 0) (= |ULTIMATE.start_main_~#a8~0#1.offset| 0) (<= 2 |ULTIMATE.start_main_~#a7~0#1.base|) (= |ULTIMATE.start_main_~#a7~0#1.offset| 0) (= |ULTIMATE.start_main_~#a4~0#1.offset| 0) (= |ULTIMATE.start_main_~x~0#1| 0))' at error location [2024-11-14 05:38:39,892 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 05:38:39,892 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 05:38:39,893 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [101, 101, 101] total 202 [2024-11-14 05:38:39,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611097062] [2024-11-14 05:38:39,893 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 05:38:39,894 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 203 states [2024-11-14 05:38:39,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:38:39,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 203 interpolants. [2024-11-14 05:38:39,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20515, Invalid=22541, Unknown=0, NotChecked=0, Total=43056 [2024-11-14 05:38:39,905 INFO L87 Difference]: Start difference. First operand 267 states and 275 transitions. Second operand has 203 states, 203 states have (on average 1.0886699507389161) internal successors, (221), 202 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:38:40,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:38:40,527 INFO L93 Difference]: Finished difference Result 534 states and 650 transitions. [2024-11-14 05:38:40,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 202 states. [2024-11-14 05:38:40,528 INFO L78 Accepts]: Start accepts. Automaton has has 203 states, 203 states have (on average 1.0886699507389161) internal successors, (221), 202 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 265 [2024-11-14 05:38:40,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:38:40,530 INFO L225 Difference]: With dead ends: 534 [2024-11-14 05:38:40,530 INFO L226 Difference]: Without dead ends: 368 [2024-11-14 05:38:40,533 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 894 GetRequests, 619 SyntacticMatches, 69 SemanticMatches, 206 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22597 ImplicationChecksByTransitivity, 33.7s TimeCoverageRelationStatistics Valid=20515, Invalid=22541, Unknown=0, NotChecked=0, Total=43056 [2024-11-14 05:38:40,534 INFO L432 NwaCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 234 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 235 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 234 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-14 05:38:40,535 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 48 Invalid, 235 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 234 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-14 05:38:40,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 368 states. [2024-11-14 05:38:40,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 368 to 368. [2024-11-14 05:38:40,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 368 states, 367 states have (on average 1.0245231607629428) internal successors, (376), 367 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:38:40,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 368 states to 368 states and 376 transitions. [2024-11-14 05:38:40,558 INFO L78 Accepts]: Start accepts. Automaton has 368 states and 376 transitions. Word has length 265 [2024-11-14 05:38:40,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:38:40,558 INFO L471 AbstractCegarLoop]: Abstraction has 368 states and 376 transitions. [2024-11-14 05:38:40,559 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 203 states, 203 states have (on average 1.0886699507389161) internal successors, (221), 202 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:38:40,559 INFO L276 IsEmpty]: Start isEmpty. Operand 368 states and 376 transitions. [2024-11-14 05:38:40,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 367 [2024-11-14 05:38:40,566 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:38:40,566 INFO L215 NwaCegarLoop]: trace histogram [200, 22, 22, 22, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:38:40,596 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0ffd2f9-1eba-40d9-9e9a-d740b9e32243/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-14 05:38:40,766 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0ffd2f9-1eba-40d9-9e9a-d740b9e32243/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-14 05:38:40,767 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 05:38:40,767 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:38:40,767 INFO L85 PathProgramCache]: Analyzing trace with hash -601309163, now seen corresponding path program 10 times [2024-11-14 05:38:40,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:38:40,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1566406762] [2024-11-14 05:38:40,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:38:40,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:38:41,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:39:18,824 INFO L134 CoverageAnalysis]: Checked inductivity of 21871 backedges. 0 proven. 20100 refuted. 0 times theorem prover too weak. 1771 trivial. 0 not checked. [2024-11-14 05:39:18,824 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:39:18,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1566406762] [2024-11-14 05:39:18,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1566406762] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:39:18,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1858271670] [2024-11-14 05:39:18,825 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-14 05:39:18,825 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:39:18,825 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0ffd2f9-1eba-40d9-9e9a-d740b9e32243/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:39:18,827 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0ffd2f9-1eba-40d9-9e9a-d740b9e32243/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:39:18,828 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0ffd2f9-1eba-40d9-9e9a-d740b9e32243/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-14 05:39:20,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:39:20,662 INFO L255 TraceCheckSpWp]: Trace formula consists of 4015 conjuncts, 202 conjuncts are in the unsatisfiable core [2024-11-14 05:39:20,677 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:39:21,160 INFO L134 CoverageAnalysis]: Checked inductivity of 21871 backedges. 0 proven. 20100 refuted. 0 times theorem prover too weak. 1771 trivial. 0 not checked. [2024-11-14 05:39:21,160 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:40:23,682 INFO L134 CoverageAnalysis]: Checked inductivity of 21871 backedges. 0 proven. 20100 refuted. 0 times theorem prover too weak. 1771 trivial. 0 not checked. [2024-11-14 05:40:23,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1858271670] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:40:23,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [840184929] [2024-11-14 05:40:23,684 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2024-11-14 05:40:23,684 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 05:40:23,685 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 05:40:23,685 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 05:40:23,685 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 05:40:24,466 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 05:40:54,325 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '14639#(and (not (= (select (select |#memory_int| |ULTIMATE.start_main_~#a1~0#1.base|) 0) (select (select |#memory_int| |ULTIMATE.start_main_~#a8~0#1.base|) 0))) (= |ULTIMATE.start_main_~#a5~0#1.offset| 0) (<= 1 |#StackHeapBarrier|) (<= 2 |ULTIMATE.start_main_~#a8~0#1.base|) (<= 2 |ULTIMATE.start_main_~#a5~0#1.base|) (<= 2 |ULTIMATE.start_main_~#a2~0#1.base|) (<= 2 |ULTIMATE.start_main_~#a3~0#1.base|) (= |ULTIMATE.start_main_~#a3~0#1.offset| 0) (<= 2 |ULTIMATE.start_main_~#a1~0#1.base|) (= |ULTIMATE.start_main_~#a1~0#1.offset| 0) (<= 2 |ULTIMATE.start_main_~#a6~0#1.base|) (= |ULTIMATE.start_main_~#a6~0#1.offset| 0) (<= 2 |ULTIMATE.start_main_~#a4~0#1.base|) (= |ULTIMATE.start_main_~#a2~0#1.offset| 0) (= |ULTIMATE.start_main_~#a8~0#1.offset| 0) (<= 2 |ULTIMATE.start_main_~#a7~0#1.base|) (= |ULTIMATE.start_main_~#a7~0#1.offset| 0) (= |ULTIMATE.start_main_~#a4~0#1.offset| 0) (= |ULTIMATE.start_main_~x~0#1| 0))' at error location [2024-11-14 05:40:54,325 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 05:40:54,325 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 05:40:54,325 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [202, 202, 202] total 404 [2024-11-14 05:40:54,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825774847] [2024-11-14 05:40:54,325 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 05:40:54,326 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 405 states [2024-11-14 05:40:54,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:40:54,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 405 interpolants. [2024-11-14 05:40:54,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81822, Invalid=85868, Unknown=0, NotChecked=0, Total=167690 [2024-11-14 05:40:54,348 INFO L87 Difference]: Start difference. First operand 368 states and 376 transitions. Second operand has 405 states, 405 states have (on average 1.0444444444444445) internal successors, (423), 404 states have internal predecessors, (423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:40:57,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:40:57,576 INFO L93 Difference]: Finished difference Result 736 states and 953 transitions. [2024-11-14 05:40:57,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 404 states. [2024-11-14 05:40:57,577 INFO L78 Accepts]: Start accepts. Automaton has has 405 states, 405 states have (on average 1.0444444444444445) internal successors, (423), 404 states have internal predecessors, (423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 366 [2024-11-14 05:40:57,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:40:57,582 INFO L225 Difference]: With dead ends: 736 [2024-11-14 05:40:57,582 INFO L226 Difference]: Without dead ends: 570 [2024-11-14 05:40:57,590 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1298 GetRequests, 798 SyntacticMatches, 92 SemanticMatches, 408 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59292 ImplicationChecksByTransitivity, 112.8s TimeCoverageRelationStatistics Valid=81822, Invalid=85868, Unknown=0, NotChecked=0, Total=167690 [2024-11-14 05:40:57,591 INFO L432 NwaCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 460 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 461 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 460 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-14 05:40:57,592 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 84 Invalid, 461 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 460 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-14 05:40:57,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 570 states. [2024-11-14 05:40:57,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 570 to 570. [2024-11-14 05:40:57,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 570 states, 569 states have (on average 1.015817223198594) internal successors, (578), 569 states have internal predecessors, (578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:40:57,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 570 states to 570 states and 578 transitions. [2024-11-14 05:40:57,623 INFO L78 Accepts]: Start accepts. Automaton has 570 states and 578 transitions. Word has length 366 [2024-11-14 05:40:57,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:40:57,624 INFO L471 AbstractCegarLoop]: Abstraction has 570 states and 578 transitions. [2024-11-14 05:40:57,624 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 405 states, 405 states have (on average 1.0444444444444445) internal successors, (423), 404 states have internal predecessors, (423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:40:57,624 INFO L276 IsEmpty]: Start isEmpty. Operand 570 states and 578 transitions. [2024-11-14 05:40:57,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 569 [2024-11-14 05:40:57,640 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:40:57,641 INFO L215 NwaCegarLoop]: trace histogram [402, 22, 22, 22, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:40:57,677 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0ffd2f9-1eba-40d9-9e9a-d740b9e32243/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-14 05:40:57,841 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0ffd2f9-1eba-40d9-9e9a-d740b9e32243/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:40:57,841 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 05:40:57,842 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:40:57,842 INFO L85 PathProgramCache]: Analyzing trace with hash -401294827, now seen corresponding path program 11 times [2024-11-14 05:40:57,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:40:57,842 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1943217705] [2024-11-14 05:40:57,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:40:57,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:40:59,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:43:27,780 INFO L134 CoverageAnalysis]: Checked inductivity of 82774 backedges. 0 proven. 81003 refuted. 0 times theorem prover too weak. 1771 trivial. 0 not checked. [2024-11-14 05:43:27,781 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:43:27,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1943217705] [2024-11-14 05:43:27,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1943217705] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:43:27,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1338836428] [2024-11-14 05:43:27,781 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-14 05:43:27,781 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:43:27,782 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0ffd2f9-1eba-40d9-9e9a-d740b9e32243/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:43:27,786 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0ffd2f9-1eba-40d9-9e9a-d740b9e32243/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:43:27,789 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0ffd2f9-1eba-40d9-9e9a-d740b9e32243/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process