./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-examples/data_structures_set_multi_proc_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_0a504811-d6c3-4a72-a04c-3224acd6afa6/bin/utaipan-verify-sOmjnqqW8E/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a504811-d6c3-4a72-a04c-3224acd6afa6/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_0a504811-d6c3-4a72-a04c-3224acd6afa6/bin/utaipan-verify-sOmjnqqW8E/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a504811-d6c3-4a72-a04c-3224acd6afa6/bin/utaipan-verify-sOmjnqqW8E/config/TaipanReach.xml -i ../../sv-benchmarks/c/array-examples/data_structures_set_multi_proc_ground-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a504811-d6c3-4a72-a04c-3224acd6afa6/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_0a504811-d6c3-4a72-a04c-3224acd6afa6/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 4c9c46abbea18888bba6501dfe6c704a11e8fe399c985999e1e07c66bb12b728 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-14 03:20:49,758 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-14 03:20:49,843 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a504811-d6c3-4a72-a04c-3224acd6afa6/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-Reach-32bit-Taipan_Default.epf [2024-11-14 03:20:49,852 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-14 03:20:49,852 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-14 03:20:49,875 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-14 03:20:49,877 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-14 03:20:49,877 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-14 03:20:49,878 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-14 03:20:49,878 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-14 03:20:49,878 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-14 03:20:49,879 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-14 03:20:49,879 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-14 03:20:49,879 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-14 03:20:49,879 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-14 03:20:49,881 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-14 03:20:49,881 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-14 03:20:49,881 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-14 03:20:49,881 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-14 03:20:49,882 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-14 03:20:49,882 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-14 03:20:49,882 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-14 03:20:49,882 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-14 03:20:49,882 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-14 03:20:49,882 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-14 03:20:49,883 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-14 03:20:49,883 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-14 03:20:49,883 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-14 03:20:49,883 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-14 03:20:49,884 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-14 03:20:49,884 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-14 03:20:49,884 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-14 03:20:49,884 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-14 03:20:49,884 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-14 03:20:49,884 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-14 03:20:49,884 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-14 03:20:49,884 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-14 03:20:49,885 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-14 03:20:49,885 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 03:20:49,886 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-14 03:20:49,886 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-14 03:20:49,886 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-14 03:20:49,886 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-14 03:20:49,886 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-14 03:20:49,886 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-14 03:20:49,886 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-14 03:20:49,886 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-14 03:20:49,887 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_0a504811-d6c3-4a72-a04c-3224acd6afa6/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 -> 4c9c46abbea18888bba6501dfe6c704a11e8fe399c985999e1e07c66bb12b728 [2024-11-14 03:20:50,207 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-14 03:20:50,218 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-14 03:20:50,220 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-14 03:20:50,225 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-14 03:20:50,225 INFO L274 PluginConnector]: CDTParser initialized [2024-11-14 03:20:50,226 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a504811-d6c3-4a72-a04c-3224acd6afa6/bin/utaipan-verify-sOmjnqqW8E/../../sv-benchmarks/c/array-examples/data_structures_set_multi_proc_ground-1.i Unable to find full path for "g++" [2024-11-14 03:20:52,183 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-14 03:20:52,465 INFO L384 CDTParser]: Found 1 translation units. [2024-11-14 03:20:52,469 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a504811-d6c3-4a72-a04c-3224acd6afa6/sv-benchmarks/c/array-examples/data_structures_set_multi_proc_ground-1.i [2024-11-14 03:20:52,477 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a504811-d6c3-4a72-a04c-3224acd6afa6/bin/utaipan-verify-sOmjnqqW8E/data/73d2827a4/293cfac08bef46a4802ca0a608a0f55c/FLAG7b21c581c [2024-11-14 03:20:52,499 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a504811-d6c3-4a72-a04c-3224acd6afa6/bin/utaipan-verify-sOmjnqqW8E/data/73d2827a4/293cfac08bef46a4802ca0a608a0f55c [2024-11-14 03:20:52,501 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-14 03:20:52,503 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-14 03:20:52,505 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-14 03:20:52,505 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-14 03:20:52,510 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-14 03:20:52,511 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 03:20:52" (1/1) ... [2024-11-14 03:20:52,512 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d0e2823 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:20:52, skipping insertion in model container [2024-11-14 03:20:52,513 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 03:20:52" (1/1) ... [2024-11-14 03:20:52,530 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-14 03:20:52,662 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_0a504811-d6c3-4a72-a04c-3224acd6afa6/sv-benchmarks/c/array-examples/data_structures_set_multi_proc_ground-1.i[832,845] [2024-11-14 03:20:52,702 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 03:20:52,713 INFO L200 MainTranslator]: Completed pre-run [2024-11-14 03:20:52,727 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_0a504811-d6c3-4a72-a04c-3224acd6afa6/sv-benchmarks/c/array-examples/data_structures_set_multi_proc_ground-1.i[832,845] [2024-11-14 03:20:52,744 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 03:20:52,759 INFO L204 MainTranslator]: Completed translation [2024-11-14 03:20:52,760 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:20:52 WrapperNode [2024-11-14 03:20:52,760 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-14 03:20:52,761 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-14 03:20:52,761 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-14 03:20:52,762 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-14 03:20:52,768 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:20:52" (1/1) ... [2024-11-14 03:20:52,775 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:20:52" (1/1) ... [2024-11-14 03:20:52,801 INFO L138 Inliner]: procedures = 18, calls = 26, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 130 [2024-11-14 03:20:52,801 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-14 03:20:52,802 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-14 03:20:52,803 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-14 03:20:52,803 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-14 03:20:52,810 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:20:52" (1/1) ... [2024-11-14 03:20:52,811 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:20:52" (1/1) ... [2024-11-14 03:20:52,816 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:20:52" (1/1) ... [2024-11-14 03:20:52,817 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:20:52" (1/1) ... [2024-11-14 03:20:52,829 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:20:52" (1/1) ... [2024-11-14 03:20:52,836 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:20:52" (1/1) ... [2024-11-14 03:20:52,840 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:20:52" (1/1) ... [2024-11-14 03:20:52,841 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:20:52" (1/1) ... [2024-11-14 03:20:52,842 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-14 03:20:52,846 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-14 03:20:52,847 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-14 03:20:52,847 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-14 03:20:52,848 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:20:52" (1/1) ... [2024-11-14 03:20:52,853 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 03:20:52,866 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a504811-d6c3-4a72-a04c-3224acd6afa6/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 03:20:52,882 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a504811-d6c3-4a72-a04c-3224acd6afa6/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-14 03:20:52,889 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a504811-d6c3-4a72-a04c-3224acd6afa6/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-14 03:20:52,914 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-14 03:20:52,915 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-14 03:20:52,915 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-14 03:20:52,915 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-11-14 03:20:52,915 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-14 03:20:52,915 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-14 03:20:52,915 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-11-14 03:20:52,915 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-14 03:20:52,915 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-14 03:20:52,916 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-14 03:20:53,025 INFO L238 CfgBuilder]: Building ICFG [2024-11-14 03:20:53,027 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-14 03:20:53,337 INFO L? ?]: Removed 32 outVars from TransFormulas that were not future-live. [2024-11-14 03:20:53,340 INFO L287 CfgBuilder]: Performing block encoding [2024-11-14 03:20:53,455 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-14 03:20:53,455 INFO L316 CfgBuilder]: Removed 8 assume(true) statements. [2024-11-14 03:20:53,456 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 03:20:53 BoogieIcfgContainer [2024-11-14 03:20:53,456 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-14 03:20:53,461 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-14 03:20:53,461 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-14 03:20:53,466 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-14 03:20:53,466 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.11 03:20:52" (1/3) ... [2024-11-14 03:20:53,467 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@716ff7a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 03:20:53, skipping insertion in model container [2024-11-14 03:20:53,468 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:20:52" (2/3) ... [2024-11-14 03:20:53,468 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@716ff7a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 03:20:53, skipping insertion in model container [2024-11-14 03:20:53,468 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 03:20:53" (3/3) ... [2024-11-14 03:20:53,469 INFO L112 eAbstractionObserver]: Analyzing ICFG data_structures_set_multi_proc_ground-1.i [2024-11-14 03:20:53,488 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-14 03:20:53,489 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG data_structures_set_multi_proc_ground-1.i that has 2 procedures, 22 locations, 1 initial locations, 8 loop locations, and 1 error locations. [2024-11-14 03:20:53,536 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-14 03:20:53,548 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;@3b52ab6b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-14 03:20:53,548 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-14 03:20:53,552 INFO L276 IsEmpty]: Start isEmpty. Operand has 22 states, 17 states have (on average 1.6470588235294117) internal successors, (28), 18 states have internal predecessors, (28), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-14 03:20:53,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-14 03:20:53,559 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:20:53,559 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:20:53,559 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 03:20:53,563 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:20:53,564 INFO L85 PathProgramCache]: Analyzing trace with hash 678563981, now seen corresponding path program 1 times [2024-11-14 03:20:53,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:20:53,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180726083] [2024-11-14 03:20:53,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:20:53,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:20:53,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:20:53,744 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 03:20:53,744 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:20:53,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [180726083] [2024-11-14 03:20:53,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [180726083] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:20:53,745 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 03:20:53,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-14 03:20:53,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697770772] [2024-11-14 03:20:53,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:20:53,750 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 03:20:53,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:20:53,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 03:20:53,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 03:20:53,769 INFO L87 Difference]: Start difference. First operand has 22 states, 17 states have (on average 1.6470588235294117) internal successors, (28), 18 states have internal predecessors, (28), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:20:53,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:20:53,848 INFO L93 Difference]: Finished difference Result 51 states and 81 transitions. [2024-11-14 03:20:53,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 03:20:53,850 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2024-11-14 03:20:53,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:20:53,856 INFO L225 Difference]: With dead ends: 51 [2024-11-14 03:20:53,857 INFO L226 Difference]: Without dead ends: 30 [2024-11-14 03:20:53,859 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 03:20:53,862 INFO L432 NwaCegarLoop]: 18 mSDtfsCounter, 6 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 03:20:53,863 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 34 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 03:20:53,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2024-11-14 03:20:53,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 22. [2024-11-14 03:20:53,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 18 states have (on average 1.5) internal successors, (27), 18 states have internal predecessors, (27), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-14 03:20:53,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 31 transitions. [2024-11-14 03:20:53,895 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 31 transitions. Word has length 8 [2024-11-14 03:20:53,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:20:53,895 INFO L471 AbstractCegarLoop]: Abstraction has 22 states and 31 transitions. [2024-11-14 03:20:53,896 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:20:53,896 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 31 transitions. [2024-11-14 03:20:53,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-14 03:20:53,926 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:20:53,926 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:20:53,926 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-14 03:20:53,926 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 03:20:53,927 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:20:53,927 INFO L85 PathProgramCache]: Analyzing trace with hash -578093575, now seen corresponding path program 1 times [2024-11-14 03:20:53,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:20:53,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49197935] [2024-11-14 03:20:53,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:20:53,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:20:53,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:20:54,085 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 03:20:54,085 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:20:54,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49197935] [2024-11-14 03:20:54,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [49197935] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 03:20:54,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [149953331] [2024-11-14 03:20:54,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:20:54,086 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:20:54,086 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a504811-d6c3-4a72-a04c-3224acd6afa6/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 03:20:54,089 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a504811-d6c3-4a72-a04c-3224acd6afa6/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 03:20:54,090 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a504811-d6c3-4a72-a04c-3224acd6afa6/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-14 03:20:54,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:20:54,184 INFO L255 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-14 03:20:54,187 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:20:54,237 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 03:20:54,237 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 03:20:54,275 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 03:20:54,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [149953331] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 03:20:54,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1925451063] [2024-11-14 03:20:54,297 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2024-11-14 03:20:54,298 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 03:20:54,302 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 03:20:54,308 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 03:20:54,308 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 03:20:54,779 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 03:20:54,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [1925451063] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:20:54,866 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2024-11-14 03:20:54,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3, 3] total 8 [2024-11-14 03:20:54,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380174119] [2024-11-14 03:20:54,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:20:54,868 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-14 03:20:54,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:20:54,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-14 03:20:54,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2024-11-14 03:20:54,870 INFO L87 Difference]: Start difference. First operand 22 states and 31 transitions. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:20:54,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:20:54,925 INFO L93 Difference]: Finished difference Result 38 states and 53 transitions. [2024-11-14 03:20:54,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-14 03:20:54,926 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2024-11-14 03:20:54,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:20:54,926 INFO L225 Difference]: With dead ends: 38 [2024-11-14 03:20:54,926 INFO L226 Difference]: Without dead ends: 19 [2024-11-14 03:20:54,927 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2024-11-14 03:20:54,928 INFO L432 NwaCegarLoop]: 15 mSDtfsCounter, 0 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-14 03:20:54,929 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 27 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-14 03:20:54,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2024-11-14 03:20:54,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2024-11-14 03:20:54,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 16 states have (on average 1.4375) internal successors, (23), 16 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-14 03:20:54,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 25 transitions. [2024-11-14 03:20:54,937 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 25 transitions. Word has length 9 [2024-11-14 03:20:54,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:20:54,938 INFO L471 AbstractCegarLoop]: Abstraction has 19 states and 25 transitions. [2024-11-14 03:20:54,938 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:20:54,938 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 25 transitions. [2024-11-14 03:20:54,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-14 03:20:54,939 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:20:54,939 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:20:54,962 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a504811-d6c3-4a72-a04c-3224acd6afa6/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-14 03:20:55,144 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a504811-d6c3-4a72-a04c-3224acd6afa6/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:20:55,144 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 03:20:55,145 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:20:55,145 INFO L85 PathProgramCache]: Analyzing trace with hash 694900380, now seen corresponding path program 1 times [2024-11-14 03:20:55,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:20:55,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818273498] [2024-11-14 03:20:55,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:20:55,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:20:55,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:20:55,279 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 03:20:55,279 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:20:55,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [818273498] [2024-11-14 03:20:55,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [818273498] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 03:20:55,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1138862563] [2024-11-14 03:20:55,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:20:55,280 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:20:55,280 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a504811-d6c3-4a72-a04c-3224acd6afa6/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 03:20:55,286 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a504811-d6c3-4a72-a04c-3224acd6afa6/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 03:20:55,287 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a504811-d6c3-4a72-a04c-3224acd6afa6/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-14 03:20:55,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:20:55,378 INFO L255 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-14 03:20:55,379 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:20:55,394 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 03:20:55,394 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 03:20:55,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1138862563] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:20:55,394 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-14 03:20:55,394 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2024-11-14 03:20:55,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67250949] [2024-11-14 03:20:55,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:20:55,395 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 03:20:55,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:20:55,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 03:20:55,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-14 03:20:55,395 INFO L87 Difference]: Start difference. First operand 19 states and 25 transitions. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:20:55,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:20:55,443 INFO L93 Difference]: Finished difference Result 38 states and 52 transitions. [2024-11-14 03:20:55,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 03:20:55,444 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 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 03:20:55,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:20:55,444 INFO L225 Difference]: With dead ends: 38 [2024-11-14 03:20:55,444 INFO L226 Difference]: Without dead ends: 24 [2024-11-14 03:20:55,445 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 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 03:20:55,445 INFO L432 NwaCegarLoop]: 14 mSDtfsCounter, 5 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-14 03:20:55,445 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 28 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-14 03:20:55,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2024-11-14 03:20:55,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 21. [2024-11-14 03:20:55,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 18 states have (on average 1.3888888888888888) internal successors, (25), 18 states have internal predecessors, (25), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-14 03:20:55,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 27 transitions. [2024-11-14 03:20:55,455 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 27 transitions. Word has length 12 [2024-11-14 03:20:55,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:20:55,455 INFO L471 AbstractCegarLoop]: Abstraction has 21 states and 27 transitions. [2024-11-14 03:20:55,455 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:20:55,455 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 27 transitions. [2024-11-14 03:20:55,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-14 03:20:55,456 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:20:55,456 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:20:55,476 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a504811-d6c3-4a72-a04c-3224acd6afa6/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-14 03:20:55,660 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a504811-d6c3-4a72-a04c-3224acd6afa6/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2024-11-14 03:20:55,660 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 03:20:55,661 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:20:55,661 INFO L85 PathProgramCache]: Analyzing trace with hash 1407598714, now seen corresponding path program 1 times [2024-11-14 03:20:55,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:20:55,661 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1860529249] [2024-11-14 03:20:55,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:20:55,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:20:55,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:20:55,800 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-14 03:20:55,801 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:20:55,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1860529249] [2024-11-14 03:20:55,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1860529249] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 03:20:55,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [143465985] [2024-11-14 03:20:55,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:20:55,803 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:20:55,803 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a504811-d6c3-4a72-a04c-3224acd6afa6/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 03:20:55,805 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a504811-d6c3-4a72-a04c-3224acd6afa6/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 03:20:55,808 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a504811-d6c3-4a72-a04c-3224acd6afa6/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-14 03:20:55,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:20:55,903 INFO L255 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-14 03:20:55,904 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:20:55,920 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-14 03:20:55,922 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 03:20:55,944 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-14 03:20:55,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [143465985] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 03:20:55,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [598146398] [2024-11-14 03:20:55,946 INFO L159 IcfgInterpreter]: Started Sifa with 14 locations of interest [2024-11-14 03:20:55,947 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 03:20:55,948 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 03:20:55,948 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 03:20:55,948 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 03:20:56,430 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 03:20:56,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [598146398] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:20:56,814 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2024-11-14 03:20:56,815 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [3, 3, 3] total 12 [2024-11-14 03:20:56,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762162945] [2024-11-14 03:20:56,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:20:56,815 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-14 03:20:56,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:20:56,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-14 03:20:56,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2024-11-14 03:20:56,817 INFO L87 Difference]: Start difference. First operand 21 states and 27 transitions. Second operand has 8 states, 8 states have (on average 1.875) internal successors, (15), 7 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:20:57,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:20:57,054 INFO L93 Difference]: Finished difference Result 43 states and 59 transitions. [2024-11-14 03:20:57,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-14 03:20:57,055 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.875) internal successors, (15), 7 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2024-11-14 03:20:57,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:20:57,056 INFO L225 Difference]: With dead ends: 43 [2024-11-14 03:20:57,056 INFO L226 Difference]: Without dead ends: 29 [2024-11-14 03:20:57,056 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2024-11-14 03:20:57,057 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 8 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 03:20:57,057 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 52 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 03:20:57,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2024-11-14 03:20:57,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 25. [2024-11-14 03:20:57,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 22 states have (on average 1.3636363636363635) internal successors, (30), 22 states have internal predecessors, (30), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-14 03:20:57,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 32 transitions. [2024-11-14 03:20:57,064 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 32 transitions. Word has length 16 [2024-11-14 03:20:57,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:20:57,064 INFO L471 AbstractCegarLoop]: Abstraction has 25 states and 32 transitions. [2024-11-14 03:20:57,064 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.875) internal successors, (15), 7 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:20:57,064 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 32 transitions. [2024-11-14 03:20:57,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-14 03:20:57,065 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:20:57,065 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:20:57,085 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a504811-d6c3-4a72-a04c-3224acd6afa6/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-14 03:20:57,269 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a504811-d6c3-4a72-a04c-3224acd6afa6/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:20:57,270 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 03:20:57,270 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:20:57,270 INFO L85 PathProgramCache]: Analyzing trace with hash 2046912900, now seen corresponding path program 1 times [2024-11-14 03:20:57,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:20:57,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422283112] [2024-11-14 03:20:57,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:20:57,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:20:57,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:20:57,418 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-14 03:20:57,419 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:20:57,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [422283112] [2024-11-14 03:20:57,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [422283112] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 03:20:57,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [36080942] [2024-11-14 03:20:57,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:20:57,419 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:20:57,419 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a504811-d6c3-4a72-a04c-3224acd6afa6/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 03:20:57,424 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a504811-d6c3-4a72-a04c-3224acd6afa6/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 03:20:57,425 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a504811-d6c3-4a72-a04c-3224acd6afa6/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-14 03:20:57,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:20:57,524 INFO L255 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-14 03:20:57,525 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:20:57,538 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-14 03:20:57,539 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 03:20:57,561 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-14 03:20:57,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [36080942] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 03:20:57,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [715808065] [2024-11-14 03:20:57,563 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2024-11-14 03:20:57,565 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 03:20:57,566 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 03:20:57,566 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 03:20:57,566 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 03:20:58,139 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 42 for LOIs [2024-11-14 03:20:58,165 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 03:20:59,027 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '760#(and (exists ((|v_ULTIMATE.start_main_~#set~0#1.base_BEFORE_CALL_1| Int) (|v_#memory_int_55| (Array Int (Array Int Int))) (|v_ULTIMATE.start_main_~v~0#1_66| Int) (|v_ULTIMATE.start_main_~#values~0#1.offset_BEFORE_CALL_1| Int) (|v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_1| Int) (|v_ULTIMATE.start_main_~#values~0#1.base_BEFORE_CALL_1| Int) (|v_ULTIMATE.start_main_~#set~0#1.offset_BEFORE_CALL_1| Int)) (and (<= 100000 |v_ULTIMATE.start_main_~v~0#1_66|) (= (store |v_#memory_int_55| |v_ULTIMATE.start_main_~#set~0#1.base_BEFORE_CALL_1| (store (select |v_#memory_int_55| |v_ULTIMATE.start_main_~#set~0#1.base_BEFORE_CALL_1|) (+ |v_ULTIMATE.start_main_~#set~0#1.offset_BEFORE_CALL_1| (- 4) (* |v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_1| 4)) (select (select |v_#memory_int_55| |v_ULTIMATE.start_main_~#values~0#1.base_BEFORE_CALL_1|) (+ (* |v_ULTIMATE.start_main_~v~0#1_66| 4) (- 4) |v_ULTIMATE.start_main_~#values~0#1.offset_BEFORE_CALL_1|)))) |#memory_int|) (<= |v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_1| 2147483647) (<= 2 |v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_1|) (= (select (select |#memory_int| |v_ULTIMATE.start_main_~#set~0#1.base_BEFORE_CALL_1|) |v_ULTIMATE.start_main_~#set~0#1.offset_BEFORE_CALL_1|) (select (select |#memory_int| |v_ULTIMATE.start_main_~#set~0#1.base_BEFORE_CALL_1|) (+ |v_ULTIMATE.start_main_~#set~0#1.offset_BEFORE_CALL_1| 4))))) (= |__VERIFIER_assert_#in~cond| 0))' at error location [2024-11-14 03:20:59,028 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 03:20:59,028 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 03:20:59,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2024-11-14 03:20:59,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757185355] [2024-11-14 03:20:59,029 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 03:20:59,029 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-14 03:20:59,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:20:59,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-14 03:20:59,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=299, Unknown=8, NotChecked=0, Total=380 [2024-11-14 03:20:59,030 INFO L87 Difference]: Start difference. First operand 25 states and 32 transitions. Second operand has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 6 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:20:59,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:20:59,115 INFO L93 Difference]: Finished difference Result 66 states and 90 transitions. [2024-11-14 03:20:59,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-14 03:20:59,115 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 6 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 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 03:20:59,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:20:59,116 INFO L225 Difference]: With dead ends: 66 [2024-11-14 03:20:59,116 INFO L226 Difference]: Without dead ends: 44 [2024-11-14 03:20:59,117 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=73, Invalid=299, Unknown=8, NotChecked=0, Total=380 [2024-11-14 03:20:59,117 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 20 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 03:20:59,118 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 43 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 03:20:59,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2024-11-14 03:20:59,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 28. [2024-11-14 03:20:59,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 25 states have (on average 1.32) internal successors, (33), 25 states have internal predecessors, (33), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-14 03:20:59,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 35 transitions. [2024-11-14 03:20:59,125 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 35 transitions. Word has length 20 [2024-11-14 03:20:59,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:20:59,125 INFO L471 AbstractCegarLoop]: Abstraction has 28 states and 35 transitions. [2024-11-14 03:20:59,125 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 6 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:20:59,125 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 35 transitions. [2024-11-14 03:20:59,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-14 03:20:59,126 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:20:59,126 INFO L215 NwaCegarLoop]: trace histogram [4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:20:59,146 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a504811-d6c3-4a72-a04c-3224acd6afa6/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-14 03:20:59,326 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a504811-d6c3-4a72-a04c-3224acd6afa6/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:20:59,326 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 03:20:59,327 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:20:59,327 INFO L85 PathProgramCache]: Analyzing trace with hash 462280560, now seen corresponding path program 2 times [2024-11-14 03:20:59,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:20:59,327 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272802790] [2024-11-14 03:20:59,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:20:59,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:20:59,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:20:59,473 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-14 03:20:59,473 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:20:59,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272802790] [2024-11-14 03:20:59,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [272802790] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 03:20:59,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1974501087] [2024-11-14 03:20:59,474 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-14 03:20:59,474 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:20:59,474 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a504811-d6c3-4a72-a04c-3224acd6afa6/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 03:20:59,477 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a504811-d6c3-4a72-a04c-3224acd6afa6/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 03:20:59,479 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a504811-d6c3-4a72-a04c-3224acd6afa6/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-14 03:20:59,576 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-14 03:20:59,576 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 03:20:59,578 INFO L255 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-14 03:20:59,579 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:20:59,594 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-14 03:20:59,594 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 03:20:59,618 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-14 03:20:59,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1974501087] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 03:20:59,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [568797735] [2024-11-14 03:20:59,621 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2024-11-14 03:20:59,621 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 03:20:59,622 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 03:20:59,622 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 03:20:59,622 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 03:21:00,153 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 42 for LOIs [2024-11-14 03:21:00,172 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 03:21:02,924 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1070#(and (exists ((|v_ULTIMATE.start_main_~#set~0#1.base_BEFORE_CALL_2| Int) (|v_ULTIMATE.start_main_~#values~0#1.offset_BEFORE_CALL_2| Int) (|v_#memory_int_68| (Array Int (Array Int Int))) (|v_ULTIMATE.start_main_~#values~0#1.base_BEFORE_CALL_2| Int) (|v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_2| Int) (|v_ULTIMATE.start_main_~#set~0#1.offset_BEFORE_CALL_2| Int) (|v_ULTIMATE.start_main_~v~0#1_81| Int)) (and (<= 2 |v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_2|) (<= |v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_2| 2147483647) (<= 100000 |v_ULTIMATE.start_main_~v~0#1_81|) (= (select (select |#memory_int| |v_ULTIMATE.start_main_~#set~0#1.base_BEFORE_CALL_2|) (+ |v_ULTIMATE.start_main_~#set~0#1.offset_BEFORE_CALL_2| 4)) (select (select |#memory_int| |v_ULTIMATE.start_main_~#set~0#1.base_BEFORE_CALL_2|) |v_ULTIMATE.start_main_~#set~0#1.offset_BEFORE_CALL_2|)) (= |#memory_int| (store |v_#memory_int_68| |v_ULTIMATE.start_main_~#set~0#1.base_BEFORE_CALL_2| (store (select |v_#memory_int_68| |v_ULTIMATE.start_main_~#set~0#1.base_BEFORE_CALL_2|) (+ (* |v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_2| 4) |v_ULTIMATE.start_main_~#set~0#1.offset_BEFORE_CALL_2| (- 4)) (select (select |v_#memory_int_68| |v_ULTIMATE.start_main_~#values~0#1.base_BEFORE_CALL_2|) (+ (- 4) (* |v_ULTIMATE.start_main_~v~0#1_81| 4) |v_ULTIMATE.start_main_~#values~0#1.offset_BEFORE_CALL_2|))))))) (= |__VERIFIER_assert_#in~cond| 0))' at error location [2024-11-14 03:21:02,924 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 03:21:02,924 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 03:21:02,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-11-14 03:21:02,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001295970] [2024-11-14 03:21:02,925 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 03:21:02,925 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-14 03:21:02,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:21:02,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-14 03:21:02,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=317, Unknown=10, NotChecked=0, Total=380 [2024-11-14 03:21:02,926 INFO L87 Difference]: Start difference. First operand 28 states and 35 transitions. Second operand has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:21:03,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:21:03,057 INFO L93 Difference]: Finished difference Result 66 states and 89 transitions. [2024-11-14 03:21:03,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-14 03:21:03,058 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 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 03:21:03,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:21:03,058 INFO L225 Difference]: With dead ends: 66 [2024-11-14 03:21:03,059 INFO L226 Difference]: Without dead ends: 47 [2024-11-14 03:21:03,059 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=53, Invalid=317, Unknown=10, NotChecked=0, Total=380 [2024-11-14 03:21:03,060 INFO L432 NwaCegarLoop]: 14 mSDtfsCounter, 19 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 03:21:03,060 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 59 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 03:21:03,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2024-11-14 03:21:03,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 45. [2024-11-14 03:21:03,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 42 states have (on average 1.3333333333333333) internal successors, (56), 42 states have internal predecessors, (56), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-14 03:21:03,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 58 transitions. [2024-11-14 03:21:03,069 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 58 transitions. Word has length 23 [2024-11-14 03:21:03,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:21:03,070 INFO L471 AbstractCegarLoop]: Abstraction has 45 states and 58 transitions. [2024-11-14 03:21:03,070 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:21:03,070 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 58 transitions. [2024-11-14 03:21:03,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-11-14 03:21:03,071 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:21:03,071 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:21:03,091 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a504811-d6c3-4a72-a04c-3224acd6afa6/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-14 03:21:03,271 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a504811-d6c3-4a72-a04c-3224acd6afa6/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-14 03:21:03,272 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 03:21:03,272 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:21:03,273 INFO L85 PathProgramCache]: Analyzing trace with hash -1087744606, now seen corresponding path program 3 times [2024-11-14 03:21:03,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:21:03,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1827831308] [2024-11-14 03:21:03,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:21:03,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:21:03,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:21:03,543 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-14 03:21:03,544 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:21:03,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1827831308] [2024-11-14 03:21:03,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1827831308] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 03:21:03,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1690546689] [2024-11-14 03:21:03,544 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-14 03:21:03,544 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:21:03,545 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a504811-d6c3-4a72-a04c-3224acd6afa6/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 03:21:03,546 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a504811-d6c3-4a72-a04c-3224acd6afa6/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 03:21:03,549 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a504811-d6c3-4a72-a04c-3224acd6afa6/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-14 03:21:03,679 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-14 03:21:03,679 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 03:21:03,681 INFO L255 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-14 03:21:03,683 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:21:03,722 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-14 03:21:03,722 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 03:21:03,901 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-14 03:21:03,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1690546689] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 03:21:03,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [9249934] [2024-11-14 03:21:03,904 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2024-11-14 03:21:03,904 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 03:21:03,904 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 03:21:03,904 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 03:21:03,904 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 03:21:04,333 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 42 for LOIs [2024-11-14 03:21:04,357 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 03:21:05,834 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1465#(and (= |__VERIFIER_assert_#in~cond| 0) (exists ((|v_ULTIMATE.start_main_~#set~0#1.base_BEFORE_CALL_3| Int) (|v_ULTIMATE.start_main_~#values~0#1.base_BEFORE_CALL_3| Int) (|v_ULTIMATE.start_main_~v~0#1_100| Int) (|v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_3| Int) (|v_ULTIMATE.start_main_~#values~0#1.offset_BEFORE_CALL_3| Int) (|v_ULTIMATE.start_main_~#set~0#1.offset_BEFORE_CALL_3| Int) (|v_#memory_int_90| (Array Int (Array Int Int)))) (and (<= 100000 |v_ULTIMATE.start_main_~v~0#1_100|) (<= |v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_3| 2147483647) (= (select (select |#memory_int| |v_ULTIMATE.start_main_~#set~0#1.base_BEFORE_CALL_3|) |v_ULTIMATE.start_main_~#set~0#1.offset_BEFORE_CALL_3|) (select (select |#memory_int| |v_ULTIMATE.start_main_~#set~0#1.base_BEFORE_CALL_3|) (+ |v_ULTIMATE.start_main_~#set~0#1.offset_BEFORE_CALL_3| 4))) (<= 2 |v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_3|) (= (store |v_#memory_int_90| |v_ULTIMATE.start_main_~#set~0#1.base_BEFORE_CALL_3| (store (select |v_#memory_int_90| |v_ULTIMATE.start_main_~#set~0#1.base_BEFORE_CALL_3|) (+ |v_ULTIMATE.start_main_~#set~0#1.offset_BEFORE_CALL_3| (- 4) (* |v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_3| 4)) (select (select |v_#memory_int_90| |v_ULTIMATE.start_main_~#values~0#1.base_BEFORE_CALL_3|) (+ (* |v_ULTIMATE.start_main_~v~0#1_100| 4) (- 4) |v_ULTIMATE.start_main_~#values~0#1.offset_BEFORE_CALL_3|)))) |#memory_int|))))' at error location [2024-11-14 03:21:05,835 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 03:21:05,835 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 03:21:05,835 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2024-11-14 03:21:05,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613262192] [2024-11-14 03:21:05,835 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 03:21:05,835 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-14 03:21:05,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:21:05,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-14 03:21:05,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=487, Unknown=8, NotChecked=0, Total=650 [2024-11-14 03:21:05,837 INFO L87 Difference]: Start difference. First operand 45 states and 58 transitions. Second operand has 13 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 12 states have internal predecessors, (28), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:21:06,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:21:06,082 INFO L93 Difference]: Finished difference Result 130 states and 181 transitions. [2024-11-14 03:21:06,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-14 03:21:06,083 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 12 states have internal predecessors, (28), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2024-11-14 03:21:06,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:21:06,085 INFO L225 Difference]: With dead ends: 130 [2024-11-14 03:21:06,085 INFO L226 Difference]: Without dead ends: 91 [2024-11-14 03:21:06,085 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 253 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=155, Invalid=487, Unknown=8, NotChecked=0, Total=650 [2024-11-14 03:21:06,086 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 56 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-14 03:21:06,086 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 77 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-14 03:21:06,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2024-11-14 03:21:06,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 51. [2024-11-14 03:21:06,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 48 states have (on average 1.2916666666666667) internal successors, (62), 48 states have internal predecessors, (62), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-14 03:21:06,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 64 transitions. [2024-11-14 03:21:06,101 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 64 transitions. Word has length 32 [2024-11-14 03:21:06,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:21:06,102 INFO L471 AbstractCegarLoop]: Abstraction has 51 states and 64 transitions. [2024-11-14 03:21:06,102 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 12 states have internal predecessors, (28), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:21:06,102 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 64 transitions. [2024-11-14 03:21:06,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-14 03:21:06,103 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:21:06,103 INFO L215 NwaCegarLoop]: trace histogram [10, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:21:06,123 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a504811-d6c3-4a72-a04c-3224acd6afa6/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-14 03:21:06,307 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a504811-d6c3-4a72-a04c-3224acd6afa6/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-11-14 03:21:06,307 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 03:21:06,307 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:21:06,308 INFO L85 PathProgramCache]: Analyzing trace with hash -1138115038, now seen corresponding path program 4 times [2024-11-14 03:21:06,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:21:06,308 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1107040720] [2024-11-14 03:21:06,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:21:06,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:21:06,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:21:06,910 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-14 03:21:06,910 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:21:06,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1107040720] [2024-11-14 03:21:06,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1107040720] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 03:21:06,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [441443382] [2024-11-14 03:21:06,910 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-14 03:21:06,910 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:21:06,911 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a504811-d6c3-4a72-a04c-3224acd6afa6/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 03:21:06,912 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a504811-d6c3-4a72-a04c-3224acd6afa6/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 03:21:06,913 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a504811-d6c3-4a72-a04c-3224acd6afa6/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-14 03:21:07,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:21:07,052 INFO L255 TraceCheckSpWp]: Trace formula consists of 332 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-14 03:21:07,054 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:21:07,125 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-14 03:21:07,125 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 03:21:07,641 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-14 03:21:07,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [441443382] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 03:21:07,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2096426996] [2024-11-14 03:21:07,643 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2024-11-14 03:21:07,644 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 03:21:07,644 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 03:21:07,644 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 03:21:07,644 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 03:21:08,034 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 42 for LOIs [2024-11-14 03:21:08,052 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 03:21:11,553 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2033#(and (exists ((|v_#memory_int_118| (Array Int (Array Int Int))) (|v_ULTIMATE.start_main_~#set~0#1.base_BEFORE_CALL_4| Int) (|v_ULTIMATE.start_main_~#values~0#1.base_BEFORE_CALL_4| Int) (|v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_4| Int) (|v_ULTIMATE.start_main_~#set~0#1.offset_BEFORE_CALL_4| Int) (|v_ULTIMATE.start_main_~#values~0#1.offset_BEFORE_CALL_4| Int) (|v_ULTIMATE.start_main_~v~0#1_119| Int)) (and (<= 100000 |v_ULTIMATE.start_main_~v~0#1_119|) (= |#memory_int| (store |v_#memory_int_118| |v_ULTIMATE.start_main_~#set~0#1.base_BEFORE_CALL_4| (store (select |v_#memory_int_118| |v_ULTIMATE.start_main_~#set~0#1.base_BEFORE_CALL_4|) (+ |v_ULTIMATE.start_main_~#set~0#1.offset_BEFORE_CALL_4| (* |v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_4| 4) (- 4)) (select (select |v_#memory_int_118| |v_ULTIMATE.start_main_~#values~0#1.base_BEFORE_CALL_4|) (+ (- 4) |v_ULTIMATE.start_main_~#values~0#1.offset_BEFORE_CALL_4| (* |v_ULTIMATE.start_main_~v~0#1_119| 4)))))) (<= |v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_4| 2147483647) (<= 2 |v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_4|) (= (select (select |#memory_int| |v_ULTIMATE.start_main_~#set~0#1.base_BEFORE_CALL_4|) |v_ULTIMATE.start_main_~#set~0#1.offset_BEFORE_CALL_4|) (select (select |#memory_int| |v_ULTIMATE.start_main_~#set~0#1.base_BEFORE_CALL_4|) (+ |v_ULTIMATE.start_main_~#set~0#1.offset_BEFORE_CALL_4| 4))))) (= |__VERIFIER_assert_#in~cond| 0))' at error location [2024-11-14 03:21:11,554 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 03:21:11,554 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 03:21:11,554 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 24 [2024-11-14 03:21:11,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255514141] [2024-11-14 03:21:11,554 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 03:21:11,554 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-14 03:21:11,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:21:11,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-14 03:21:11,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=424, Invalid=975, Unknown=7, NotChecked=0, Total=1406 [2024-11-14 03:21:11,557 INFO L87 Difference]: Start difference. First operand 51 states and 64 transitions. Second operand has 25 states, 25 states have (on average 1.6) internal successors, (40), 24 states have internal predecessors, (40), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:21:12,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:21:12,186 INFO L93 Difference]: Finished difference Result 190 states and 271 transitions. [2024-11-14 03:21:12,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-14 03:21:12,187 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 1.6) internal successors, (40), 24 states have internal predecessors, (40), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2024-11-14 03:21:12,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:21:12,189 INFO L225 Difference]: With dead ends: 190 [2024-11-14 03:21:12,189 INFO L226 Difference]: Without dead ends: 151 [2024-11-14 03:21:12,190 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 535 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=424, Invalid=975, Unknown=7, NotChecked=0, Total=1406 [2024-11-14 03:21:12,191 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 132 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-14 03:21:12,191 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [154 Valid, 89 Invalid, 211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-14 03:21:12,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2024-11-14 03:21:12,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 63. [2024-11-14 03:21:12,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 60 states have (on average 1.2333333333333334) internal successors, (74), 60 states have internal predecessors, (74), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-14 03:21:12,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 76 transitions. [2024-11-14 03:21:12,206 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 76 transitions. Word has length 38 [2024-11-14 03:21:12,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:21:12,206 INFO L471 AbstractCegarLoop]: Abstraction has 63 states and 76 transitions. [2024-11-14 03:21:12,206 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 1.6) internal successors, (40), 24 states have internal predecessors, (40), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:21:12,206 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 76 transitions. [2024-11-14 03:21:12,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-11-14 03:21:12,207 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:21:12,207 INFO L215 NwaCegarLoop]: trace histogram [22, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:21:12,227 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a504811-d6c3-4a72-a04c-3224acd6afa6/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-14 03:21:12,411 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a504811-d6c3-4a72-a04c-3224acd6afa6/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-11-14 03:21:12,411 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 03:21:12,412 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:21:12,412 INFO L85 PathProgramCache]: Analyzing trace with hash -1413517534, now seen corresponding path program 5 times [2024-11-14 03:21:12,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:21:12,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1125939862] [2024-11-14 03:21:12,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:21:12,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:21:12,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:21:13,984 INFO L134 CoverageAnalysis]: Checked inductivity of 285 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-14 03:21:13,985 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:21:13,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1125939862] [2024-11-14 03:21:13,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1125939862] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 03:21:13,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [786990940] [2024-11-14 03:21:13,985 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-14 03:21:13,985 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:21:13,986 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a504811-d6c3-4a72-a04c-3224acd6afa6/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 03:21:13,987 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a504811-d6c3-4a72-a04c-3224acd6afa6/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 03:21:13,988 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a504811-d6c3-4a72-a04c-3224acd6afa6/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-14 03:21:14,122 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-14 03:21:14,122 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 03:21:14,124 INFO L255 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-14 03:21:14,126 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:21:14,512 INFO L134 CoverageAnalysis]: Checked inductivity of 285 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 275 trivial. 0 not checked. [2024-11-14 03:21:14,512 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 03:21:14,903 INFO L134 CoverageAnalysis]: Checked inductivity of 285 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 275 trivial. 0 not checked. [2024-11-14 03:21:14,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [786990940] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 03:21:14,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1538660223] [2024-11-14 03:21:14,905 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2024-11-14 03:21:14,905 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 03:21:14,906 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 03:21:14,906 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 03:21:14,906 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 03:21:15,282 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 42 for LOIs [2024-11-14 03:21:15,300 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 03:21:22,251 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2815#(and (= |__VERIFIER_assert_#in~cond| 0) (exists ((|v_#memory_int_136| (Array Int (Array Int Int))) (|v_ULTIMATE.start_main_~#set~0#1.base_BEFORE_CALL_5| Int) (|v_ULTIMATE.start_main_~v~0#1_142| Int) (|v_ULTIMATE.start_main_~#values~0#1.offset_BEFORE_CALL_5| Int) (|v_ULTIMATE.start_main_~#set~0#1.offset_BEFORE_CALL_5| Int) (|v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_5| Int) (|v_ULTIMATE.start_main_~#values~0#1.base_BEFORE_CALL_5| Int)) (and (<= |v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_5| 2147483647) (= (store |v_#memory_int_136| |v_ULTIMATE.start_main_~#set~0#1.base_BEFORE_CALL_5| (store (select |v_#memory_int_136| |v_ULTIMATE.start_main_~#set~0#1.base_BEFORE_CALL_5|) (+ |v_ULTIMATE.start_main_~#set~0#1.offset_BEFORE_CALL_5| (* |v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_5| 4) (- 4)) (select (select |v_#memory_int_136| |v_ULTIMATE.start_main_~#values~0#1.base_BEFORE_CALL_5|) (+ (- 4) |v_ULTIMATE.start_main_~#values~0#1.offset_BEFORE_CALL_5| (* |v_ULTIMATE.start_main_~v~0#1_142| 4))))) |#memory_int|) (= (select (select |#memory_int| |v_ULTIMATE.start_main_~#set~0#1.base_BEFORE_CALL_5|) (+ |v_ULTIMATE.start_main_~#set~0#1.offset_BEFORE_CALL_5| 4)) (select (select |#memory_int| |v_ULTIMATE.start_main_~#set~0#1.base_BEFORE_CALL_5|) |v_ULTIMATE.start_main_~#set~0#1.offset_BEFORE_CALL_5|)) (<= 100000 |v_ULTIMATE.start_main_~v~0#1_142|) (<= 2 |v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_5|))))' at error location [2024-11-14 03:21:22,251 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 03:21:22,251 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 03:21:22,251 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 7, 7] total 35 [2024-11-14 03:21:22,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262171287] [2024-11-14 03:21:22,252 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 03:21:22,252 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-11-14 03:21:22,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:21:22,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-11-14 03:21:22,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=489, Invalid=1757, Unknown=10, NotChecked=0, Total=2256 [2024-11-14 03:21:22,254 INFO L87 Difference]: Start difference. First operand 63 states and 76 transitions. Second operand has 35 states, 35 states have (on average 1.5142857142857142) internal successors, (53), 35 states have internal predecessors, (53), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:21:23,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:21:23,169 INFO L93 Difference]: Finished difference Result 245 states and 347 transitions. [2024-11-14 03:21:23,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2024-11-14 03:21:23,170 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 1.5142857142857142) internal successors, (53), 35 states have internal predecessors, (53), 1 states have call successors, (1), 1 states have call predecessors, (1), 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 03:21:23,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:21:23,172 INFO L225 Difference]: With dead ends: 245 [2024-11-14 03:21:23,172 INFO L226 Difference]: Without dead ends: 206 [2024-11-14 03:21:23,173 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 784 ImplicationChecksByTransitivity, 8.6s TimeCoverageRelationStatistics Valid=489, Invalid=1757, Unknown=10, NotChecked=0, Total=2256 [2024-11-14 03:21:23,173 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 203 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 251 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 226 SdHoareTripleChecker+Valid, 176 SdHoareTripleChecker+Invalid, 341 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 251 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-14 03:21:23,174 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [226 Valid, 176 Invalid, 341 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 251 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-14 03:21:23,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2024-11-14 03:21:23,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 112. [2024-11-14 03:21:23,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 109 states have (on average 1.2935779816513762) internal successors, (141), 109 states have internal predecessors, (141), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-14 03:21:23,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 143 transitions. [2024-11-14 03:21:23,211 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 143 transitions. Word has length 50 [2024-11-14 03:21:23,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:21:23,215 INFO L471 AbstractCegarLoop]: Abstraction has 112 states and 143 transitions. [2024-11-14 03:21:23,215 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 1.5142857142857142) internal successors, (53), 35 states have internal predecessors, (53), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:21:23,215 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 143 transitions. [2024-11-14 03:21:23,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2024-11-14 03:21:23,216 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:21:23,216 INFO L215 NwaCegarLoop]: trace histogram [23, 10, 10, 10, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:21:23,252 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a504811-d6c3-4a72-a04c-3224acd6afa6/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-14 03:21:23,417 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a504811-d6c3-4a72-a04c-3224acd6afa6/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2024-11-14 03:21:23,417 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 03:21:23,418 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:21:23,418 INFO L85 PathProgramCache]: Analyzing trace with hash 1667870286, now seen corresponding path program 6 times [2024-11-14 03:21:23,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:21:23,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [642657644] [2024-11-14 03:21:23,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:21:23,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:21:23,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:21:25,395 INFO L134 CoverageAnalysis]: Checked inductivity of 476 backedges. 0 proven. 276 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2024-11-14 03:21:25,395 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:21:25,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [642657644] [2024-11-14 03:21:25,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [642657644] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 03:21:25,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [734760181] [2024-11-14 03:21:25,396 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-14 03:21:25,396 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:21:25,396 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a504811-d6c3-4a72-a04c-3224acd6afa6/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 03:21:25,398 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a504811-d6c3-4a72-a04c-3224acd6afa6/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 03:21:25,399 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a504811-d6c3-4a72-a04c-3224acd6afa6/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-14 03:21:25,642 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-14 03:21:25,642 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 03:21:25,644 INFO L255 TraceCheckSpWp]: Trace formula consists of 695 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-14 03:21:25,648 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:21:25,776 INFO L134 CoverageAnalysis]: Checked inductivity of 476 backedges. 0 proven. 276 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2024-11-14 03:21:25,776 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 03:21:28,771 INFO L134 CoverageAnalysis]: Checked inductivity of 476 backedges. 0 proven. 276 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2024-11-14 03:21:28,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [734760181] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 03:21:28,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [148424666] [2024-11-14 03:21:28,773 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2024-11-14 03:21:28,773 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 03:21:28,773 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 03:21:28,774 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 03:21:28,774 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 03:21:29,068 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 42 for LOIs [2024-11-14 03:21:29,087 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 03:21:33,708 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '3933#(and (exists ((|v_ULTIMATE.start_main_~v~0#1_173| Int) (|v_ULTIMATE.start_main_~#set~0#1.base_BEFORE_CALL_6| Int) (|v_ULTIMATE.start_main_~#set~0#1.offset_BEFORE_CALL_6| Int) (|v_ULTIMATE.start_main_~#values~0#1.offset_BEFORE_CALL_6| Int) (|v_#memory_int_189| (Array Int (Array Int Int))) (|v_ULTIMATE.start_main_~#values~0#1.base_BEFORE_CALL_6| Int) (|v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_6| Int)) (and (<= 2 |v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_6|) (<= 100000 |v_ULTIMATE.start_main_~v~0#1_173|) (<= |v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_6| 2147483647) (= |#memory_int| (store |v_#memory_int_189| |v_ULTIMATE.start_main_~#set~0#1.base_BEFORE_CALL_6| (store (select |v_#memory_int_189| |v_ULTIMATE.start_main_~#set~0#1.base_BEFORE_CALL_6|) (+ (* |v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_6| 4) |v_ULTIMATE.start_main_~#set~0#1.offset_BEFORE_CALL_6| (- 4)) (select (select |v_#memory_int_189| |v_ULTIMATE.start_main_~#values~0#1.base_BEFORE_CALL_6|) (+ (* |v_ULTIMATE.start_main_~v~0#1_173| 4) (- 4) |v_ULTIMATE.start_main_~#values~0#1.offset_BEFORE_CALL_6|))))) (= (select (select |#memory_int| |v_ULTIMATE.start_main_~#set~0#1.base_BEFORE_CALL_6|) |v_ULTIMATE.start_main_~#set~0#1.offset_BEFORE_CALL_6|) (select (select |#memory_int| |v_ULTIMATE.start_main_~#set~0#1.base_BEFORE_CALL_6|) (+ |v_ULTIMATE.start_main_~#set~0#1.offset_BEFORE_CALL_6| 4))))) (= |__VERIFIER_assert_#in~cond| 0))' at error location [2024-11-14 03:21:33,708 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 03:21:33,709 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 03:21:33,709 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 50 [2024-11-14 03:21:33,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194427797] [2024-11-14 03:21:33,709 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 03:21:33,710 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2024-11-14 03:21:33,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:21:33,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2024-11-14 03:21:33,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1503, Invalid=2520, Unknown=9, NotChecked=0, Total=4032 [2024-11-14 03:21:33,712 INFO L87 Difference]: Start difference. First operand 112 states and 143 transitions. Second operand has 51 states, 51 states have (on average 1.2941176470588236) internal successors, (66), 50 states have internal predecessors, (66), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:21:35,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:21:35,058 INFO L93 Difference]: Finished difference Result 416 states and 598 transitions. [2024-11-14 03:21:35,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2024-11-14 03:21:35,058 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 1.2941176470588236) internal successors, (66), 50 states have internal predecessors, (66), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2024-11-14 03:21:35,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:21:35,061 INFO L225 Difference]: With dead ends: 416 [2024-11-14 03:21:35,061 INFO L226 Difference]: Without dead ends: 329 [2024-11-14 03:21:35,062 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1146 ImplicationChecksByTransitivity, 8.6s TimeCoverageRelationStatistics Valid=1503, Invalid=2520, Unknown=9, NotChecked=0, Total=4032 [2024-11-14 03:21:35,063 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 370 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 312 mSolverCounterSat, 176 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 418 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 488 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 176 IncrementalHoareTripleChecker+Valid, 312 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-14 03:21:35,063 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [418 Valid, 157 Invalid, 488 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [176 Valid, 312 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-14 03:21:35,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 329 states. [2024-11-14 03:21:35,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 329 to 137. [2024-11-14 03:21:35,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 134 states have (on average 1.2388059701492538) internal successors, (166), 134 states have internal predecessors, (166), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-14 03:21:35,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 168 transitions. [2024-11-14 03:21:35,107 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 168 transitions. Word has length 75 [2024-11-14 03:21:35,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:21:35,107 INFO L471 AbstractCegarLoop]: Abstraction has 137 states and 168 transitions. [2024-11-14 03:21:35,107 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 1.2941176470588236) internal successors, (66), 50 states have internal predecessors, (66), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:21:35,107 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 168 transitions. [2024-11-14 03:21:35,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2024-11-14 03:21:35,109 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:21:35,109 INFO L215 NwaCegarLoop]: trace histogram [48, 10, 10, 10, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:21:35,135 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a504811-d6c3-4a72-a04c-3224acd6afa6/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-14 03:21:35,309 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a504811-d6c3-4a72-a04c-3224acd6afa6/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-14 03:21:35,310 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 03:21:35,310 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:21:35,310 INFO L85 PathProgramCache]: Analyzing trace with hash -83068062, now seen corresponding path program 7 times [2024-11-14 03:21:35,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:21:35,310 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1943850502] [2024-11-14 03:21:35,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:21:35,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:21:35,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:21:41,841 INFO L134 CoverageAnalysis]: Checked inductivity of 1376 backedges. 0 proven. 1176 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2024-11-14 03:21:41,842 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:21:41,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1943850502] [2024-11-14 03:21:41,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1943850502] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 03:21:41,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [331541418] [2024-11-14 03:21:41,842 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-14 03:21:41,842 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:21:41,842 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a504811-d6c3-4a72-a04c-3224acd6afa6/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 03:21:41,844 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a504811-d6c3-4a72-a04c-3224acd6afa6/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 03:21:41,847 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a504811-d6c3-4a72-a04c-3224acd6afa6/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-14 03:21:42,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:21:42,146 INFO L255 TraceCheckSpWp]: Trace formula consists of 920 conjuncts, 50 conjuncts are in the unsatisfiable core [2024-11-14 03:21:42,150 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:21:42,434 INFO L134 CoverageAnalysis]: Checked inductivity of 1376 backedges. 0 proven. 1176 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2024-11-14 03:21:42,434 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 03:21:55,116 INFO L134 CoverageAnalysis]: Checked inductivity of 1376 backedges. 0 proven. 1176 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2024-11-14 03:21:55,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [331541418] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 03:21:55,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [901891650] [2024-11-14 03:21:55,119 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2024-11-14 03:21:55,119 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 03:21:55,119 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 03:21:55,119 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 03:21:55,119 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 03:21:55,398 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 42 for LOIs [2024-11-14 03:21:55,415 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 03:21:59,975 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '5601#(and (= |__VERIFIER_assert_#in~cond| 0) (exists ((|v_ULTIMATE.start_main_~#set~0#1.base_BEFORE_CALL_7| Int) (|v_ULTIMATE.start_main_~#set~0#1.offset_BEFORE_CALL_7| Int) (|v_ULTIMATE.start_main_~#values~0#1.base_BEFORE_CALL_7| Int) (|v_#memory_int_267| (Array Int (Array Int Int))) (|v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_7| Int) (|v_ULTIMATE.start_main_~#values~0#1.offset_BEFORE_CALL_7| Int) (|v_ULTIMATE.start_main_~v~0#1_204| Int)) (and (<= |v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_7| 2147483647) (<= 100000 |v_ULTIMATE.start_main_~v~0#1_204|) (<= 2 |v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_7|) (= (select (select |#memory_int| |v_ULTIMATE.start_main_~#set~0#1.base_BEFORE_CALL_7|) |v_ULTIMATE.start_main_~#set~0#1.offset_BEFORE_CALL_7|) (select (select |#memory_int| |v_ULTIMATE.start_main_~#set~0#1.base_BEFORE_CALL_7|) (+ |v_ULTIMATE.start_main_~#set~0#1.offset_BEFORE_CALL_7| 4))) (= |#memory_int| (store |v_#memory_int_267| |v_ULTIMATE.start_main_~#set~0#1.base_BEFORE_CALL_7| (store (select |v_#memory_int_267| |v_ULTIMATE.start_main_~#set~0#1.base_BEFORE_CALL_7|) (+ |v_ULTIMATE.start_main_~#set~0#1.offset_BEFORE_CALL_7| (- 4) (* |v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_7| 4)) (select (select |v_#memory_int_267| |v_ULTIMATE.start_main_~#values~0#1.base_BEFORE_CALL_7|) (+ (- 4) |v_ULTIMATE.start_main_~#values~0#1.offset_BEFORE_CALL_7| (* |v_ULTIMATE.start_main_~v~0#1_204| 4)))))))))' at error location [2024-11-14 03:21:59,975 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 03:21:59,975 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 03:21:59,975 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 50, 50] total 100 [2024-11-14 03:21:59,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107817526] [2024-11-14 03:21:59,975 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 03:21:59,976 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 101 states [2024-11-14 03:21:59,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:21:59,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 101 interpolants. [2024-11-14 03:21:59,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5479, Invalid=7396, Unknown=7, NotChecked=0, Total=12882 [2024-11-14 03:21:59,982 INFO L87 Difference]: Start difference. First operand 137 states and 168 transitions. Second operand has 101 states, 101 states have (on average 1.1485148514851484) internal successors, (116), 100 states have internal predecessors, (116), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:22:05,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:22:05,023 INFO L93 Difference]: Finished difference Result 666 states and 973 transitions. [2024-11-14 03:22:05,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2024-11-14 03:22:05,024 INFO L78 Accepts]: Start accepts. Automaton has has 101 states, 101 states have (on average 1.1485148514851484) internal successors, (116), 100 states have internal predecessors, (116), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2024-11-14 03:22:05,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:22:05,027 INFO L225 Difference]: With dead ends: 666 [2024-11-14 03:22:05,028 INFO L226 Difference]: Without dead ends: 579 [2024-11-14 03:22:05,030 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 348 GetRequests, 236 SyntacticMatches, 0 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2321 ImplicationChecksByTransitivity, 21.7s TimeCoverageRelationStatistics Valid=5479, Invalid=7396, Unknown=7, NotChecked=0, Total=12882 [2024-11-14 03:22:05,030 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 1038 mSDsluCounter, 213 mSDsCounter, 0 mSdLazyCounter, 583 mSolverCounterSat, 506 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1136 SdHoareTripleChecker+Valid, 226 SdHoareTripleChecker+Invalid, 1089 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 506 IncrementalHoareTripleChecker+Valid, 583 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2024-11-14 03:22:05,031 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1136 Valid, 226 Invalid, 1089 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [506 Valid, 583 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2024-11-14 03:22:05,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 579 states. [2024-11-14 03:22:05,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 579 to 187. [2024-11-14 03:22:05,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 184 states have (on average 1.173913043478261) internal successors, (216), 184 states have internal predecessors, (216), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-14 03:22:05,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 218 transitions. [2024-11-14 03:22:05,080 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 218 transitions. Word has length 100 [2024-11-14 03:22:05,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:22:05,080 INFO L471 AbstractCegarLoop]: Abstraction has 187 states and 218 transitions. [2024-11-14 03:22:05,080 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 101 states, 101 states have (on average 1.1485148514851484) internal successors, (116), 100 states have internal predecessors, (116), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:22:05,080 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 218 transitions. [2024-11-14 03:22:05,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2024-11-14 03:22:05,082 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:22:05,082 INFO L215 NwaCegarLoop]: trace histogram [98, 10, 10, 10, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:22:05,101 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a504811-d6c3-4a72-a04c-3224acd6afa6/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-14 03:22:05,283 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a504811-d6c3-4a72-a04c-3224acd6afa6/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-14 03:22:05,283 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 03:22:05,283 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:22:05,283 INFO L85 PathProgramCache]: Analyzing trace with hash 1661512930, now seen corresponding path program 8 times [2024-11-14 03:22:05,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:22:05,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [446697410] [2024-11-14 03:22:05,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:22:05,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:22:05,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:22:29,111 INFO L134 CoverageAnalysis]: Checked inductivity of 5051 backedges. 0 proven. 4851 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2024-11-14 03:22:29,112 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:22:29,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [446697410] [2024-11-14 03:22:29,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [446697410] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 03:22:29,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1365630644] [2024-11-14 03:22:29,112 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-14 03:22:29,112 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:22:29,112 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a504811-d6c3-4a72-a04c-3224acd6afa6/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 03:22:29,115 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a504811-d6c3-4a72-a04c-3224acd6afa6/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 03:22:29,116 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a504811-d6c3-4a72-a04c-3224acd6afa6/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-14 03:22:29,401 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-14 03:22:29,401 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 03:22:29,403 INFO L255 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-14 03:22:29,408 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:22:30,841 INFO L134 CoverageAnalysis]: Checked inductivity of 5051 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 5023 trivial. 0 not checked. [2024-11-14 03:22:30,841 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 03:22:30,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1365630644] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:22:30,842 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-14 03:22:30,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [100] total 106 [2024-11-14 03:22:30,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619507150] [2024-11-14 03:22:30,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:22:30,842 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-14 03:22:30,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:22:30,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-14 03:22:30,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5062, Invalid=6068, Unknown=0, NotChecked=0, Total=11130 [2024-11-14 03:22:30,845 INFO L87 Difference]: Start difference. First operand 187 states and 218 transitions. Second operand has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:22:31,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:22:31,894 INFO L93 Difference]: Finished difference Result 295 states and 377 transitions. [2024-11-14 03:22:31,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-14 03:22:31,894 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 150 [2024-11-14 03:22:31,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:22:31,897 INFO L225 Difference]: With dead ends: 295 [2024-11-14 03:22:31,897 INFO L226 Difference]: Without dead ends: 283 [2024-11-14 03:22:31,899 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 493 ImplicationChecksByTransitivity, 21.1s TimeCoverageRelationStatistics Valid=5075, Invalid=6697, Unknown=0, NotChecked=0, Total=11772 [2024-11-14 03:22:31,900 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 20 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-14 03:22:31,900 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 43 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-14 03:22:31,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2024-11-14 03:22:31,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 163. [2024-11-14 03:22:31,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 160 states have (on average 1.15) internal successors, (184), 160 states have internal predecessors, (184), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-14 03:22:31,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 186 transitions. [2024-11-14 03:22:31,922 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 186 transitions. Word has length 150 [2024-11-14 03:22:31,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:22:31,922 INFO L471 AbstractCegarLoop]: Abstraction has 163 states and 186 transitions. [2024-11-14 03:22:31,923 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:22:31,923 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 186 transitions. [2024-11-14 03:22:31,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2024-11-14 03:22:31,925 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:22:31,925 INFO L215 NwaCegarLoop]: trace histogram [98, 10, 10, 10, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:22:31,940 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a504811-d6c3-4a72-a04c-3224acd6afa6/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-14 03:22:32,125 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a504811-d6c3-4a72-a04c-3224acd6afa6/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:22:32,126 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 03:22:32,126 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:22:32,126 INFO L85 PathProgramCache]: Analyzing trace with hash -1437619486, now seen corresponding path program 9 times [2024-11-14 03:22:32,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:22:32,126 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [810543227] [2024-11-14 03:22:32,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:22:32,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:22:32,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:22:52,971 INFO L134 CoverageAnalysis]: Checked inductivity of 5051 backedges. 0 proven. 4851 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2024-11-14 03:22:52,971 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:22:52,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [810543227] [2024-11-14 03:22:52,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [810543227] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 03:22:52,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [405455653] [2024-11-14 03:22:52,971 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-14 03:22:52,971 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:22:52,971 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a504811-d6c3-4a72-a04c-3224acd6afa6/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 03:22:52,973 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a504811-d6c3-4a72-a04c-3224acd6afa6/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 03:22:52,974 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a504811-d6c3-4a72-a04c-3224acd6afa6/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-14 03:22:53,443 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-14 03:22:53,444 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 03:22:53,456 INFO L255 TraceCheckSpWp]: Trace formula consists of 1370 conjuncts, 100 conjuncts are in the unsatisfiable core [2024-11-14 03:22:53,461 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:22:54,019 INFO L134 CoverageAnalysis]: Checked inductivity of 5051 backedges. 0 proven. 4851 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2024-11-14 03:22:54,019 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 03:23:47,392 INFO L134 CoverageAnalysis]: Checked inductivity of 5051 backedges. 0 proven. 4851 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2024-11-14 03:23:47,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [405455653] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 03:23:47,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1370632715] [2024-11-14 03:23:47,394 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2024-11-14 03:23:47,394 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 03:23:47,394 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 03:23:47,395 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 03:23:47,395 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 03:23:47,681 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 42 for LOIs [2024-11-14 03:23:47,700 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 03:23:53,330 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '9566#(and (exists ((|v_ULTIMATE.start_main_~#set~0#1.base_BEFORE_CALL_8| Int) (|v_ULTIMATE.start_main_~#set~0#1.offset_BEFORE_CALL_8| Int) (|v_ULTIMATE.start_main_~v~0#1_235| Int) (|v_ULTIMATE.start_main_~#values~0#1.base_BEFORE_CALL_8| Int) (|v_#memory_int_396| (Array Int (Array Int Int))) (|v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_8| Int) (|v_ULTIMATE.start_main_~#values~0#1.offset_BEFORE_CALL_8| Int)) (and (<= 2 |v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_8|) (<= |v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_8| 2147483647) (= (select (select |#memory_int| |v_ULTIMATE.start_main_~#set~0#1.base_BEFORE_CALL_8|) |v_ULTIMATE.start_main_~#set~0#1.offset_BEFORE_CALL_8|) (select (select |#memory_int| |v_ULTIMATE.start_main_~#set~0#1.base_BEFORE_CALL_8|) (+ |v_ULTIMATE.start_main_~#set~0#1.offset_BEFORE_CALL_8| 4))) (<= 100000 |v_ULTIMATE.start_main_~v~0#1_235|) (= |#memory_int| (store |v_#memory_int_396| |v_ULTIMATE.start_main_~#set~0#1.base_BEFORE_CALL_8| (store (select |v_#memory_int_396| |v_ULTIMATE.start_main_~#set~0#1.base_BEFORE_CALL_8|) (+ |v_ULTIMATE.start_main_~#set~0#1.offset_BEFORE_CALL_8| (- 4) (* |v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_8| 4)) (select (select |v_#memory_int_396| |v_ULTIMATE.start_main_~#values~0#1.base_BEFORE_CALL_8|) (+ (- 4) |v_ULTIMATE.start_main_~#values~0#1.offset_BEFORE_CALL_8| (* |v_ULTIMATE.start_main_~v~0#1_235| 4)))))))) (= |__VERIFIER_assert_#in~cond| 0))' at error location [2024-11-14 03:23:53,330 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 03:23:53,330 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 03:23:53,330 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [100, 100, 100] total 200 [2024-11-14 03:23:53,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153653955] [2024-11-14 03:23:53,330 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 03:23:53,331 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 201 states [2024-11-14 03:23:53,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:23:53,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 201 interpolants. [2024-11-14 03:23:53,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20928, Invalid=24646, Unknown=8, NotChecked=0, Total=45582 [2024-11-14 03:23:53,343 INFO L87 Difference]: Start difference. First operand 163 states and 186 transitions. Second operand has 201 states, 201 states have (on average 1.0746268656716418) internal successors, (216), 200 states have internal predecessors, (216), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:24:21,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:24:21,853 INFO L93 Difference]: Finished difference Result 1118 states and 1659 transitions. [2024-11-14 03:24:21,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 200 states. [2024-11-14 03:24:21,854 INFO L78 Accepts]: Start accepts. Automaton has has 201 states, 201 states have (on average 1.0746268656716418) internal successors, (216), 200 states have internal predecessors, (216), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 150 [2024-11-14 03:24:21,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:24:21,861 INFO L225 Difference]: With dead ends: 1118 [2024-11-14 03:24:21,862 INFO L226 Difference]: Without dead ends: 1055 [2024-11-14 03:24:21,866 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 548 GetRequests, 336 SyntacticMatches, 0 SemanticMatches, 212 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4671 ImplicationChecksByTransitivity, 76.3s TimeCoverageRelationStatistics Valid=20928, Invalid=24646, Unknown=8, NotChecked=0, Total=45582 [2024-11-14 03:24:21,866 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 2580 mSDsluCounter, 357 mSDsCounter, 0 mSdLazyCounter, 1130 mSolverCounterSat, 1259 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2778 SdHoareTripleChecker+Valid, 370 SdHoareTripleChecker+Invalid, 2389 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1259 IncrementalHoareTripleChecker+Valid, 1130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2024-11-14 03:24:21,867 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2778 Valid, 370 Invalid, 2389 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1259 Valid, 1130 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2024-11-14 03:24:21,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1055 states. [2024-11-14 03:24:21,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1055 to 263. [2024-11-14 03:24:21,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 263 states, 260 states have (on average 1.0923076923076922) internal successors, (284), 260 states have internal predecessors, (284), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-14 03:24:21,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 286 transitions. [2024-11-14 03:24:21,994 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 286 transitions. Word has length 150 [2024-11-14 03:24:21,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:24:21,994 INFO L471 AbstractCegarLoop]: Abstraction has 263 states and 286 transitions. [2024-11-14 03:24:21,995 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 201 states, 201 states have (on average 1.0746268656716418) internal successors, (216), 200 states have internal predecessors, (216), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:24:21,995 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 286 transitions. [2024-11-14 03:24:21,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2024-11-14 03:24:21,998 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:24:21,999 INFO L215 NwaCegarLoop]: trace histogram [198, 10, 10, 10, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:24:22,024 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a504811-d6c3-4a72-a04c-3224acd6afa6/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-11-14 03:24:22,199 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a504811-d6c3-4a72-a04c-3224acd6afa6/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:24:22,199 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 03:24:22,200 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:24:22,200 INFO L85 PathProgramCache]: Analyzing trace with hash -358486558, now seen corresponding path program 10 times [2024-11-14 03:24:22,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:24:22,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [248354423] [2024-11-14 03:24:22,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:24:22,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:24:22,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:25:46,330 INFO L134 CoverageAnalysis]: Checked inductivity of 19901 backedges. 0 proven. 19701 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2024-11-14 03:25:46,330 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:25:46,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [248354423] [2024-11-14 03:25:46,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [248354423] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 03:25:46,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [521150464] [2024-11-14 03:25:46,330 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-14 03:25:46,330 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:25:46,330 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a504811-d6c3-4a72-a04c-3224acd6afa6/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 03:25:46,332 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a504811-d6c3-4a72-a04c-3224acd6afa6/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 03:25:46,333 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a504811-d6c3-4a72-a04c-3224acd6afa6/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-14 03:25:47,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:25:47,024 INFO L255 TraceCheckSpWp]: Trace formula consists of 2270 conjuncts, 200 conjuncts are in the unsatisfiable core [2024-11-14 03:25:47,029 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:25:48,088 INFO L134 CoverageAnalysis]: Checked inductivity of 19901 backedges. 0 proven. 19701 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2024-11-14 03:25:48,088 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 03:29:27,656 INFO L134 CoverageAnalysis]: Checked inductivity of 19901 backedges. 0 proven. 19701 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2024-11-14 03:29:27,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [521150464] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 03:29:27,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1380436730] [2024-11-14 03:29:27,658 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2024-11-14 03:29:27,658 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 03:29:27,658 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 03:29:27,658 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 03:29:27,659 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 03:29:27,916 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 42 for LOIs [2024-11-14 03:29:27,937 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 03:29:38,301 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '13964#(and (= |__VERIFIER_assert_#in~cond| 0) (exists ((|v_#memory_int_624| (Array Int (Array Int Int))) (|v_ULTIMATE.start_main_~#set~0#1.offset_BEFORE_CALL_9| Int) (|v_ULTIMATE.start_main_~v~0#1_266| Int) (|v_ULTIMATE.start_main_~#set~0#1.base_BEFORE_CALL_9| Int) (|v_ULTIMATE.start_main_~#values~0#1.offset_BEFORE_CALL_9| Int) (|v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_9| Int) (|v_ULTIMATE.start_main_~#values~0#1.base_BEFORE_CALL_9| Int)) (and (= (select (select |#memory_int| |v_ULTIMATE.start_main_~#set~0#1.base_BEFORE_CALL_9|) (+ |v_ULTIMATE.start_main_~#set~0#1.offset_BEFORE_CALL_9| 4)) (select (select |#memory_int| |v_ULTIMATE.start_main_~#set~0#1.base_BEFORE_CALL_9|) |v_ULTIMATE.start_main_~#set~0#1.offset_BEFORE_CALL_9|)) (= |#memory_int| (store |v_#memory_int_624| |v_ULTIMATE.start_main_~#set~0#1.base_BEFORE_CALL_9| (store (select |v_#memory_int_624| |v_ULTIMATE.start_main_~#set~0#1.base_BEFORE_CALL_9|) (+ |v_ULTIMATE.start_main_~#set~0#1.offset_BEFORE_CALL_9| (- 4) (* |v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_9| 4)) (select (select |v_#memory_int_624| |v_ULTIMATE.start_main_~#values~0#1.base_BEFORE_CALL_9|) (+ (- 4) (* |v_ULTIMATE.start_main_~v~0#1_266| 4) |v_ULTIMATE.start_main_~#values~0#1.offset_BEFORE_CALL_9|))))) (<= 2 |v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_9|) (<= 100000 |v_ULTIMATE.start_main_~v~0#1_266|) (<= |v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_9| 2147483647))))' at error location [2024-11-14 03:29:38,301 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 03:29:38,301 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 03:29:38,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [200, 200, 200] total 400 [2024-11-14 03:29:38,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836919893] [2024-11-14 03:29:38,301 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 03:29:38,302 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 401 states [2024-11-14 03:29:38,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:29:38,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 401 interpolants. [2024-11-14 03:29:38,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81828, Invalid=89145, Unknown=9, NotChecked=0, Total=170982 [2024-11-14 03:29:38,331 INFO L87 Difference]: Start difference. First operand 263 states and 286 transitions. Second operand has 401 states, 401 states have (on average 1.0374064837905237) internal successors, (416), 400 states have internal predecessors, (416), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)