./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/recursified_nla-digbench/recursified_divbin.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_b8f9f32f-8a79-4047-a84b-eab5851f4041/bin/utaipan-verify-sOmjnqqW8E/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8f9f32f-8a79-4047-a84b-eab5851f4041/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_b8f9f32f-8a79-4047-a84b-eab5851f4041/bin/utaipan-verify-sOmjnqqW8E/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8f9f32f-8a79-4047-a84b-eab5851f4041/bin/utaipan-verify-sOmjnqqW8E/config/TaipanReach.xml -i ../../sv-benchmarks/c/recursified_nla-digbench/recursified_divbin.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8f9f32f-8a79-4047-a84b-eab5851f4041/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_b8f9f32f-8a79-4047-a84b-eab5851f4041/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 8d0e6bdf4ddc5b5e0cadfb452142b6477bf8c78b59a2e6398c4f283004048468 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-13 23:32:15,169 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-13 23:32:15,264 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8f9f32f-8a79-4047-a84b-eab5851f4041/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-Reach-32bit-Taipan_Default.epf [2024-11-13 23:32:15,270 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-13 23:32:15,270 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-13 23:32:15,307 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-13 23:32:15,309 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-13 23:32:15,309 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-13 23:32:15,310 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-13 23:32:15,310 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-13 23:32:15,311 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-13 23:32:15,312 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-13 23:32:15,312 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-13 23:32:15,312 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-13 23:32:15,312 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-13 23:32:15,312 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-13 23:32:15,312 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-13 23:32:15,312 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-13 23:32:15,312 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-13 23:32:15,313 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-13 23:32:15,313 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-13 23:32:15,313 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-13 23:32:15,313 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-13 23:32:15,313 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-13 23:32:15,313 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-13 23:32:15,313 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-13 23:32:15,314 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-13 23:32:15,314 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-13 23:32:15,314 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-13 23:32:15,314 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-13 23:32:15,314 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-13 23:32:15,315 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-13 23:32:15,315 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-13 23:32:15,315 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-13 23:32:15,316 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-13 23:32:15,316 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-13 23:32:15,316 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-13 23:32:15,316 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-13 23:32:15,317 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-13 23:32:15,317 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-13 23:32:15,317 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-13 23:32:15,317 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-13 23:32:15,317 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-13 23:32:15,317 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-13 23:32:15,318 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-13 23:32:15,318 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-13 23:32:15,318 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-13 23:32:15,318 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_b8f9f32f-8a79-4047-a84b-eab5851f4041/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 -> 8d0e6bdf4ddc5b5e0cadfb452142b6477bf8c78b59a2e6398c4f283004048468 [2024-11-13 23:32:15,659 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-13 23:32:15,669 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-13 23:32:15,676 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-13 23:32:15,678 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-13 23:32:15,678 INFO L274 PluginConnector]: CDTParser initialized [2024-11-13 23:32:15,680 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8f9f32f-8a79-4047-a84b-eab5851f4041/bin/utaipan-verify-sOmjnqqW8E/../../sv-benchmarks/c/recursified_nla-digbench/recursified_divbin.i Unable to find full path for "g++" [2024-11-13 23:32:17,521 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-13 23:32:17,808 INFO L384 CDTParser]: Found 1 translation units. [2024-11-13 23:32:17,808 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8f9f32f-8a79-4047-a84b-eab5851f4041/sv-benchmarks/c/recursified_nla-digbench/recursified_divbin.i [2024-11-13 23:32:17,834 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8f9f32f-8a79-4047-a84b-eab5851f4041/bin/utaipan-verify-sOmjnqqW8E/data/47d28dd2a/afc4d43006c94ff197deb916336dc286/FLAG4a147a112 [2024-11-13 23:32:18,097 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8f9f32f-8a79-4047-a84b-eab5851f4041/bin/utaipan-verify-sOmjnqqW8E/data/47d28dd2a/afc4d43006c94ff197deb916336dc286 [2024-11-13 23:32:18,099 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-13 23:32:18,101 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-13 23:32:18,102 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-13 23:32:18,102 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-13 23:32:18,107 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-13 23:32:18,108 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 11:32:18" (1/1) ... [2024-11-13 23:32:18,108 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f0dca8f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:32:18, skipping insertion in model container [2024-11-13 23:32:18,109 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 11:32:18" (1/1) ... [2024-11-13 23:32:18,125 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-13 23:32:18,297 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_b8f9f32f-8a79-4047-a84b-eab5851f4041/sv-benchmarks/c/recursified_nla-digbench/recursified_divbin.i[1564,1577] [2024-11-13 23:32:18,329 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 23:32:18,340 INFO L200 MainTranslator]: Completed pre-run [2024-11-13 23:32:18,355 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_b8f9f32f-8a79-4047-a84b-eab5851f4041/sv-benchmarks/c/recursified_nla-digbench/recursified_divbin.i[1564,1577] [2024-11-13 23:32:18,376 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 23:32:18,395 INFO L204 MainTranslator]: Completed translation [2024-11-13 23:32:18,396 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:32:18 WrapperNode [2024-11-13 23:32:18,396 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-13 23:32:18,397 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-13 23:32:18,398 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-13 23:32:18,398 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-13 23:32:18,406 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:32:18" (1/1) ... [2024-11-13 23:32:18,415 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:32:18" (1/1) ... [2024-11-13 23:32:18,437 INFO L138 Inliner]: procedures = 19, calls = 63, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 65 [2024-11-13 23:32:18,438 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-13 23:32:18,439 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-13 23:32:18,439 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-13 23:32:18,441 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-13 23:32:18,447 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:32:18" (1/1) ... [2024-11-13 23:32:18,448 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:32:18" (1/1) ... [2024-11-13 23:32:18,450 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:32:18" (1/1) ... [2024-11-13 23:32:18,450 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:32:18" (1/1) ... [2024-11-13 23:32:18,463 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:32:18" (1/1) ... [2024-11-13 23:32:18,468 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:32:18" (1/1) ... [2024-11-13 23:32:18,469 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:32:18" (1/1) ... [2024-11-13 23:32:18,474 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:32:18" (1/1) ... [2024-11-13 23:32:18,476 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-13 23:32:18,477 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-13 23:32:18,481 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-13 23:32:18,481 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-13 23:32:18,482 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:32:18" (1/1) ... [2024-11-13 23:32:18,492 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-13 23:32:18,507 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8f9f32f-8a79-4047-a84b-eab5851f4041/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-13 23:32:18,522 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8f9f32f-8a79-4047-a84b-eab5851f4041/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-13 23:32:18,527 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8f9f32f-8a79-4047-a84b-eab5851f4041/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-13 23:32:18,557 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_35_to_37_0 [2024-11-13 23:32:18,557 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_35_to_37_0 [2024-11-13 23:32:18,557 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-13 23:32:18,557 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-13 23:32:18,557 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-13 23:32:18,558 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-13 23:32:18,558 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-13 23:32:18,558 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-11-13 23:32:18,558 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_39_to_46_0 [2024-11-13 23:32:18,558 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_39_to_46_0 [2024-11-13 23:32:18,558 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-13 23:32:18,559 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-13 23:32:18,559 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-11-13 23:32:18,559 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-13 23:32:18,559 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-13 23:32:18,559 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-13 23:32:18,660 INFO L238 CfgBuilder]: Building ICFG [2024-11-13 23:32:18,662 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-13 23:32:18,880 INFO L? ?]: Removed 9 outVars from TransFormulas that were not future-live. [2024-11-13 23:32:18,880 INFO L287 CfgBuilder]: Performing block encoding [2024-11-13 23:32:18,963 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-13 23:32:18,965 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-13 23:32:18,966 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 11:32:18 BoogieIcfgContainer [2024-11-13 23:32:18,966 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-13 23:32:18,968 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-13 23:32:18,970 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-13 23:32:18,975 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-13 23:32:18,976 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 11:32:18" (1/3) ... [2024-11-13 23:32:18,977 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32a4fe62 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 11:32:18, skipping insertion in model container [2024-11-13 23:32:18,977 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:32:18" (2/3) ... [2024-11-13 23:32:18,977 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32a4fe62 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 11:32:18, skipping insertion in model container [2024-11-13 23:32:18,978 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 11:32:18" (3/3) ... [2024-11-13 23:32:18,979 INFO L112 eAbstractionObserver]: Analyzing ICFG recursified_divbin.i [2024-11-13 23:32:18,995 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-13 23:32:18,997 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG recursified_divbin.i that has 5 procedures, 33 locations, 1 initial locations, 0 loop locations, and 1 error locations. [2024-11-13 23:32:19,049 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-13 23:32:19,061 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;@5449598b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-13 23:32:19,062 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-13 23:32:19,066 INFO L276 IsEmpty]: Start isEmpty. Operand has 33 states, 19 states have (on average 1.3157894736842106) internal successors, (25), 22 states have internal predecessors, (25), 8 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-13 23:32:19,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-13 23:32:19,073 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 23:32:19,074 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 23:32:19,074 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 23:32:19,078 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 23:32:19,079 INFO L85 PathProgramCache]: Analyzing trace with hash -1706594702, now seen corresponding path program 1 times [2024-11-13 23:32:19,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-13 23:32:19,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1149654557] [2024-11-13 23:32:19,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:32:19,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 23:32:19,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:32:19,317 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-13 23:32:19,317 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-13 23:32:19,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1149654557] [2024-11-13 23:32:19,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1149654557] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 23:32:19,318 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 23:32:19,319 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 23:32:19,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786738656] [2024-11-13 23:32:19,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 23:32:19,324 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-13 23:32:19,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-13 23:32:19,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-13 23:32:19,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-13 23:32:19,352 INFO L87 Difference]: Start difference. First operand has 33 states, 19 states have (on average 1.3157894736842106) internal successors, (25), 22 states have internal predecessors, (25), 8 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-13 23:32:19,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 23:32:19,413 INFO L93 Difference]: Finished difference Result 54 states and 71 transitions. [2024-11-13 23:32:19,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-13 23:32:19,416 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 21 [2024-11-13 23:32:19,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 23:32:19,422 INFO L225 Difference]: With dead ends: 54 [2024-11-13 23:32:19,422 INFO L226 Difference]: Without dead ends: 31 [2024-11-13 23:32:19,425 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-13 23:32:19,429 INFO L432 NwaCegarLoop]: 34 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 23:32:19,433 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 34 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 23:32:19,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2024-11-13 23:32:19,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2024-11-13 23:32:19,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 21 states have internal predecessors, (21), 8 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-13 23:32:19,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 36 transitions. [2024-11-13 23:32:19,474 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 36 transitions. Word has length 21 [2024-11-13 23:32:19,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 23:32:19,476 INFO L471 AbstractCegarLoop]: Abstraction has 31 states and 36 transitions. [2024-11-13 23:32:19,476 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-13 23:32:19,476 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 36 transitions. [2024-11-13 23:32:19,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-11-13 23:32:19,477 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 23:32:19,477 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 23:32:19,478 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-13 23:32:19,478 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 23:32:19,478 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 23:32:19,478 INFO L85 PathProgramCache]: Analyzing trace with hash 2098363435, now seen corresponding path program 1 times [2024-11-13 23:32:19,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-13 23:32:19,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014089047] [2024-11-13 23:32:19,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:32:19,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 23:32:19,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-13 23:32:19,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [31256363] [2024-11-13 23:32:19,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:32:19,713 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 23:32:19,713 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8f9f32f-8a79-4047-a84b-eab5851f4041/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-13 23:32:19,715 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8f9f32f-8a79-4047-a84b-eab5851f4041/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 23:32:19,717 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8f9f32f-8a79-4047-a84b-eab5851f4041/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-13 23:32:19,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:32:19,978 INFO L255 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 74 conjuncts are in the unsatisfiable core [2024-11-13 23:32:19,990 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 23:32:20,074 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 16 [2024-11-13 23:32:20,098 INFO L349 Elim1Store]: treesize reduction 48, result has 2.0 percent of original size [2024-11-13 23:32:20,098 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 61 treesize of output 53 [2024-11-13 23:32:20,131 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-13 23:32:20,305 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 23:32:20,313 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 30 [2024-11-13 23:32:20,326 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 28 [2024-11-13 23:32:20,652 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 13 [2024-11-13 23:32:20,721 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-13 23:32:20,722 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 23:32:20,722 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-13 23:32:20,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1014089047] [2024-11-13 23:32:20,723 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-13 23:32:20,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [31256363] [2024-11-13 23:32:20,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [31256363] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 23:32:20,723 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 23:32:20,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-13 23:32:20,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540263920] [2024-11-13 23:32:20,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 23:32:20,725 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-13 23:32:20,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-13 23:32:20,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-13 23:32:20,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2024-11-13 23:32:20,727 INFO L87 Difference]: Start difference. First operand 31 states and 36 transitions. Second operand has 11 states, 8 states have (on average 1.625) internal successors, (13), 8 states have internal predecessors, (13), 4 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-13 23:32:21,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 23:32:21,270 INFO L93 Difference]: Finished difference Result 50 states and 59 transitions. [2024-11-13 23:32:21,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-13 23:32:21,271 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 8 states have (on average 1.625) internal successors, (13), 8 states have internal predecessors, (13), 4 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 22 [2024-11-13 23:32:21,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 23:32:21,273 INFO L225 Difference]: With dead ends: 50 [2024-11-13 23:32:21,273 INFO L226 Difference]: Without dead ends: 48 [2024-11-13 23:32:21,274 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2024-11-13 23:32:21,275 INFO L432 NwaCegarLoop]: 18 mSDtfsCounter, 33 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 192 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-13 23:32:21,275 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 110 Invalid, 211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 192 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-13 23:32:21,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2024-11-13 23:32:21,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 47. [2024-11-13 23:32:21,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 28 states have (on average 1.1428571428571428) internal successors, (32), 31 states have internal predecessors, (32), 10 states have call successors, (10), 6 states have call predecessors, (10), 8 states have return successors, (14), 9 states have call predecessors, (14), 9 states have call successors, (14) [2024-11-13 23:32:21,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 56 transitions. [2024-11-13 23:32:21,289 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 56 transitions. Word has length 22 [2024-11-13 23:32:21,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 23:32:21,289 INFO L471 AbstractCegarLoop]: Abstraction has 47 states and 56 transitions. [2024-11-13 23:32:21,290 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 8 states have (on average 1.625) internal successors, (13), 8 states have internal predecessors, (13), 4 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-13 23:32:21,290 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 56 transitions. [2024-11-13 23:32:21,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-13 23:32:21,291 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 23:32:21,291 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 23:32:21,298 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8f9f32f-8a79-4047-a84b-eab5851f4041/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-13 23:32:21,494 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8f9f32f-8a79-4047-a84b-eab5851f4041/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 23:32:21,495 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 23:32:21,495 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 23:32:21,495 INFO L85 PathProgramCache]: Analyzing trace with hash 1593884914, now seen corresponding path program 1 times [2024-11-13 23:32:21,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-13 23:32:21,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1461073378] [2024-11-13 23:32:21,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:32:21,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 23:32:21,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-13 23:32:21,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [453633387] [2024-11-13 23:32:21,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:32:21,600 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 23:32:21,600 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8f9f32f-8a79-4047-a84b-eab5851f4041/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-13 23:32:21,602 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8f9f32f-8a79-4047-a84b-eab5851f4041/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 23:32:21,607 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8f9f32f-8a79-4047-a84b-eab5851f4041/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-13 23:32:22,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:32:22,449 INFO L255 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 86 conjuncts are in the unsatisfiable core [2024-11-13 23:32:22,458 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 23:32:22,487 INFO L349 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2024-11-13 23:32:22,488 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 52 treesize of output 46 [2024-11-13 23:32:22,624 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 23:32:22,650 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 30 [2024-11-13 23:32:22,665 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 28 [2024-11-13 23:32:22,932 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 28 [2024-11-13 23:32:23,117 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 13 [2024-11-13 23:32:23,186 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-13 23:32:23,186 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 23:32:24,496 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_127 (Array Int Int)) (|func_to_recursive_line_39_to_46_0_#t~mem2| Int)) (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_main_~#b~0#1.base| v_ArrVal_127))) (= (mod (+ (* (select (select .cse0 |c_ULTIMATE.start_main_~#q~0#1.base|) |c_ULTIMATE.start_main_~#q~0#1.offset|) |func_to_recursive_line_39_to_46_0_#t~mem2|) (select (select .cse0 |c_ULTIMATE.start_main_~#r~0#1.base|) |c_ULTIMATE.start_main_~#r~0#1.offset|)) 4294967296) (mod (select (select .cse0 |c_ULTIMATE.start_main_~#A~0#1.base|) |c_ULTIMATE.start_main_~#A~0#1.offset|) 4294967296)))) is different from false [2024-11-13 23:32:24,499 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-13 23:32:24,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1461073378] [2024-11-13 23:32:24,499 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-13 23:32:24,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [453633387] [2024-11-13 23:32:24,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [453633387] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 23:32:24,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [889783380] [2024-11-13 23:32:24,520 INFO L159 IcfgInterpreter]: Started Sifa with 22 locations of interest [2024-11-13 23:32:24,521 INFO L166 IcfgInterpreter]: Building call graph [2024-11-13 23:32:24,525 FATAL L? ?]: Ignoring exception! java.lang.IllegalArgumentException: Recursive programs are not supported. at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.topsortRelevant(CallGraph.java:132) at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.(CallGraph.java:97) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.(IcfgInterpreter.java:92) at de.uni_freiburg.informatik.ultimate.plugins.sifa.SifaBuilder.construct(SifaBuilder.java:96) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:98) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:407) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:342) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:324) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:429) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:315) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:276) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:170) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:143) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2024-11-13 23:32:24,527 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-13 23:32:24,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2024-11-13 23:32:24,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121387181] [2024-11-13 23:32:24,528 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-13 23:32:24,528 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-13 23:32:24,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-13 23:32:24,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-13 23:32:24,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=404, Unknown=1, NotChecked=40, Total=506 [2024-11-13 23:32:24,529 INFO L87 Difference]: Start difference. First operand 47 states and 56 transitions. Second operand has 16 states, 11 states have (on average 1.6363636363636365) internal successors, (18), 13 states have internal predecessors, (18), 5 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-13 23:32:25,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 23:32:25,360 INFO L93 Difference]: Finished difference Result 64 states and 76 transitions. [2024-11-13 23:32:25,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-13 23:32:25,361 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 11 states have (on average 1.6363636363636365) internal successors, (18), 13 states have internal predecessors, (18), 5 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 28 [2024-11-13 23:32:25,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 23:32:25,362 INFO L225 Difference]: With dead ends: 64 [2024-11-13 23:32:25,362 INFO L226 Difference]: Without dead ends: 62 [2024-11-13 23:32:25,363 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=108, Invalid=651, Unknown=1, NotChecked=52, Total=812 [2024-11-13 23:32:25,364 INFO L432 NwaCegarLoop]: 15 mSDtfsCounter, 55 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 317 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 345 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 317 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-13 23:32:25,365 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 126 Invalid, 345 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 317 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-13 23:32:25,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2024-11-13 23:32:25,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 49. [2024-11-13 23:32:25,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 29 states have (on average 1.1379310344827587) internal successors, (33), 32 states have internal predecessors, (33), 10 states have call successors, (10), 6 states have call predecessors, (10), 9 states have return successors, (16), 10 states have call predecessors, (16), 9 states have call successors, (16) [2024-11-13 23:32:25,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 59 transitions. [2024-11-13 23:32:25,378 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 59 transitions. Word has length 28 [2024-11-13 23:32:25,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 23:32:25,379 INFO L471 AbstractCegarLoop]: Abstraction has 49 states and 59 transitions. [2024-11-13 23:32:25,379 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 11 states have (on average 1.6363636363636365) internal successors, (18), 13 states have internal predecessors, (18), 5 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-13 23:32:25,379 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 59 transitions. [2024-11-13 23:32:25,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-11-13 23:32:25,380 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 23:32:25,381 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 23:32:25,388 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8f9f32f-8a79-4047-a84b-eab5851f4041/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-13 23:32:25,584 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8f9f32f-8a79-4047-a84b-eab5851f4041/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 23:32:25,585 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 23:32:25,585 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 23:32:25,585 INFO L85 PathProgramCache]: Analyzing trace with hash 1523288057, now seen corresponding path program 2 times [2024-11-13 23:32:25,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-13 23:32:25,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751421501] [2024-11-13 23:32:25,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:32:25,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 23:32:25,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-13 23:32:25,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1249607855] [2024-11-13 23:32:25,940 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-13 23:32:25,940 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 23:32:25,940 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8f9f32f-8a79-4047-a84b-eab5851f4041/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-13 23:32:25,942 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8f9f32f-8a79-4047-a84b-eab5851f4041/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 23:32:25,945 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8f9f32f-8a79-4047-a84b-eab5851f4041/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-13 23:32:26,349 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-13 23:32:26,349 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 23:32:26,354 WARN L253 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 126 conjuncts are in the unsatisfiable core [2024-11-13 23:32:26,361 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 23:32:26,402 INFO L349 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2024-11-13 23:32:26,402 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 52 treesize of output 46 [2024-11-13 23:32:26,483 INFO L349 Elim1Store]: treesize reduction 34, result has 35.8 percent of original size [2024-11-13 23:32:26,484 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 44 treesize of output 72 [2024-11-13 23:32:26,497 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2024-11-13 23:32:26,525 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-13 23:32:26,526 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 1 [2024-11-13 23:32:26,573 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 7 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 18 [2024-11-13 23:32:26,859 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 23:32:26,861 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 23:32:26,863 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 23:32:26,873 INFO L349 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2024-11-13 23:32:26,873 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 9 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 71 treesize of output 36 [2024-11-13 23:32:27,520 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-11-13 23:32:27,521 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 9 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 1 case distinctions, treesize of input 53 treesize of output 51 [2024-11-13 23:32:27,534 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 19 [2024-11-13 23:32:27,976 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 23:32:27,976 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 57 treesize of output 37 [2024-11-13 23:32:28,100 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 11 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-13 23:32:28,100 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 23:32:30,072 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-13 23:32:30,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [751421501] [2024-11-13 23:32:30,073 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-13 23:32:30,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1249607855] [2024-11-13 23:32:30,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1249607855] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 23:32:30,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1713687651] [2024-11-13 23:32:30,077 INFO L159 IcfgInterpreter]: Started Sifa with 22 locations of interest [2024-11-13 23:32:30,077 INFO L166 IcfgInterpreter]: Building call graph [2024-11-13 23:32:30,077 FATAL L? ?]: Ignoring exception! java.lang.IllegalArgumentException: Recursive programs are not supported. at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.topsortRelevant(CallGraph.java:132) at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.(CallGraph.java:97) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.(IcfgInterpreter.java:92) at de.uni_freiburg.informatik.ultimate.plugins.sifa.SifaBuilder.construct(SifaBuilder.java:96) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:98) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:407) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:342) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:324) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:429) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:315) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:276) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:170) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:143) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2024-11-13 23:32:30,080 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-13 23:32:30,081 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2024-11-13 23:32:30,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535042836] [2024-11-13 23:32:30,081 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-13 23:32:30,081 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-13 23:32:30,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-13 23:32:30,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-13 23:32:30,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=730, Unknown=0, NotChecked=0, Total=812 [2024-11-13 23:32:30,083 INFO L87 Difference]: Start difference. First operand 49 states and 59 transitions. Second operand has 22 states, 16 states have (on average 1.375) internal successors, (22), 18 states have internal predecessors, (22), 6 states have call successors, (7), 4 states have call predecessors, (7), 5 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2024-11-13 23:32:32,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 23:32:32,949 INFO L93 Difference]: Finished difference Result 65 states and 77 transitions. [2024-11-13 23:32:32,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-13 23:32:32,950 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 16 states have (on average 1.375) internal successors, (22), 18 states have internal predecessors, (22), 6 states have call successors, (7), 4 states have call predecessors, (7), 5 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) Word has length 34 [2024-11-13 23:32:32,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 23:32:32,951 INFO L225 Difference]: With dead ends: 65 [2024-11-13 23:32:32,951 INFO L226 Difference]: Without dead ends: 63 [2024-11-13 23:32:32,952 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 314 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=168, Invalid=1472, Unknown=0, NotChecked=0, Total=1640 [2024-11-13 23:32:32,954 INFO L432 NwaCegarLoop]: 14 mSDtfsCounter, 41 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 402 mSolverCounterSat, 27 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 125 SdHoareTripleChecker+Invalid, 430 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 402 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-13 23:32:32,954 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 125 Invalid, 430 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 402 Invalid, 1 Unknown, 0 Unchecked, 1.7s Time] [2024-11-13 23:32:32,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2024-11-13 23:32:32,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 44. [2024-11-13 23:32:32,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 27 states have (on average 1.1481481481481481) internal successors, (31), 30 states have internal predecessors, (31), 9 states have call successors, (9), 6 states have call predecessors, (9), 7 states have return successors, (10), 8 states have call predecessors, (10), 8 states have call successors, (10) [2024-11-13 23:32:32,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 50 transitions. [2024-11-13 23:32:32,976 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 50 transitions. Word has length 34 [2024-11-13 23:32:32,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 23:32:32,977 INFO L471 AbstractCegarLoop]: Abstraction has 44 states and 50 transitions. [2024-11-13 23:32:32,977 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 16 states have (on average 1.375) internal successors, (22), 18 states have internal predecessors, (22), 6 states have call successors, (7), 4 states have call predecessors, (7), 5 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2024-11-13 23:32:32,977 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 50 transitions. [2024-11-13 23:32:32,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-11-13 23:32:32,977 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 23:32:32,978 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 23:32:32,986 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8f9f32f-8a79-4047-a84b-eab5851f4041/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-13 23:32:33,178 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8f9f32f-8a79-4047-a84b-eab5851f4041/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 23:32:33,178 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 23:32:33,179 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 23:32:33,179 INFO L85 PathProgramCache]: Analyzing trace with hash -1196675621, now seen corresponding path program 1 times [2024-11-13 23:32:33,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-13 23:32:33,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [60718209] [2024-11-13 23:32:33,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:32:33,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 23:32:33,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:32:34,731 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-13 23:32:34,732 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-13 23:32:34,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [60718209] [2024-11-13 23:32:34,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [60718209] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 23:32:34,732 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 23:32:34,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-11-13 23:32:34,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131603073] [2024-11-13 23:32:34,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 23:32:34,733 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-13 23:32:34,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-13 23:32:34,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-13 23:32:34,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-11-13 23:32:34,734 INFO L87 Difference]: Start difference. First operand 44 states and 50 transitions. Second operand has 12 states, 10 states have (on average 2.0) internal successors, (20), 9 states have internal predecessors, (20), 5 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-13 23:32:35,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 23:32:35,278 INFO L93 Difference]: Finished difference Result 73 states and 84 transitions. [2024-11-13 23:32:35,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-13 23:32:35,278 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 2.0) internal successors, (20), 9 states have internal predecessors, (20), 5 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 32 [2024-11-13 23:32:35,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 23:32:35,279 INFO L225 Difference]: With dead ends: 73 [2024-11-13 23:32:35,279 INFO L226 Difference]: Without dead ends: 55 [2024-11-13 23:32:35,280 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=59, Invalid=247, Unknown=0, NotChecked=0, Total=306 [2024-11-13 23:32:35,280 INFO L432 NwaCegarLoop]: 14 mSDtfsCounter, 29 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 229 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-13 23:32:35,281 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 62 Invalid, 245 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 229 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-13 23:32:35,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2024-11-13 23:32:35,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 54. [2024-11-13 23:32:35,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 33 states have (on average 1.121212121212121) internal successors, (37), 36 states have internal predecessors, (37), 11 states have call successors, (11), 7 states have call predecessors, (11), 9 states have return successors, (14), 10 states have call predecessors, (14), 10 states have call successors, (14) [2024-11-13 23:32:35,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 62 transitions. [2024-11-13 23:32:35,309 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 62 transitions. Word has length 32 [2024-11-13 23:32:35,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 23:32:35,309 INFO L471 AbstractCegarLoop]: Abstraction has 54 states and 62 transitions. [2024-11-13 23:32:35,309 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 2.0) internal successors, (20), 9 states have internal predecessors, (20), 5 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-13 23:32:35,310 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 62 transitions. [2024-11-13 23:32:35,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-11-13 23:32:35,310 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 23:32:35,310 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 23:32:35,311 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-13 23:32:35,311 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 23:32:35,311 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 23:32:35,311 INFO L85 PathProgramCache]: Analyzing trace with hash -1215145147, now seen corresponding path program 1 times [2024-11-13 23:32:35,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-13 23:32:35,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938508630] [2024-11-13 23:32:35,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:32:35,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 23:32:35,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-13 23:32:35,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1637053739] [2024-11-13 23:32:35,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:32:35,381 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 23:32:35,381 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8f9f32f-8a79-4047-a84b-eab5851f4041/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-13 23:32:35,385 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8f9f32f-8a79-4047-a84b-eab5851f4041/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 23:32:35,387 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8f9f32f-8a79-4047-a84b-eab5851f4041/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-13 23:32:35,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:32:35,518 INFO L255 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 53 conjuncts are in the unsatisfiable core [2024-11-13 23:32:35,521 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 23:32:35,546 INFO L349 Elim1Store]: treesize reduction 48, result has 2.0 percent of original size [2024-11-13 23:32:35,546 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 61 treesize of output 53 [2024-11-13 23:32:35,556 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 16 [2024-11-13 23:32:35,563 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-13 23:32:35,653 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 23:32:35,656 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 30 [2024-11-13 23:32:35,661 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 28 [2024-11-13 23:32:35,809 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 13 [2024-11-13 23:32:35,845 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 23:32:35,845 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 23:32:35,845 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-13 23:32:35,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938508630] [2024-11-13 23:32:35,846 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-13 23:32:35,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1637053739] [2024-11-13 23:32:35,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1637053739] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 23:32:35,846 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 23:32:35,846 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-13 23:32:35,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762838744] [2024-11-13 23:32:35,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 23:32:35,847 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-13 23:32:35,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-13 23:32:35,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-13 23:32:35,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2024-11-13 23:32:35,854 INFO L87 Difference]: Start difference. First operand 54 states and 62 transitions. Second operand has 10 states, 8 states have (on average 2.625) internal successors, (21), 9 states have internal predecessors, (21), 4 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2024-11-13 23:32:36,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 23:32:36,169 INFO L93 Difference]: Finished difference Result 62 states and 69 transitions. [2024-11-13 23:32:36,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-13 23:32:36,169 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 2.625) internal successors, (21), 9 states have internal predecessors, (21), 4 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Word has length 32 [2024-11-13 23:32:36,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 23:32:36,170 INFO L225 Difference]: With dead ends: 62 [2024-11-13 23:32:36,170 INFO L226 Difference]: Without dead ends: 46 [2024-11-13 23:32:36,171 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2024-11-13 23:32:36,172 INFO L432 NwaCegarLoop]: 16 mSDtfsCounter, 15 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 201 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-13 23:32:36,172 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 108 Invalid, 212 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 201 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-13 23:32:36,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2024-11-13 23:32:36,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2024-11-13 23:32:36,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 28 states have (on average 1.1428571428571428) internal successors, (32), 31 states have internal predecessors, (32), 9 states have call successors, (9), 6 states have call predecessors, (9), 8 states have return successors, (11), 8 states have call predecessors, (11), 8 states have call successors, (11) [2024-11-13 23:32:36,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 52 transitions. [2024-11-13 23:32:36,183 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 52 transitions. Word has length 32 [2024-11-13 23:32:36,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 23:32:36,184 INFO L471 AbstractCegarLoop]: Abstraction has 46 states and 52 transitions. [2024-11-13 23:32:36,184 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 2.625) internal successors, (21), 9 states have internal predecessors, (21), 4 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2024-11-13 23:32:36,184 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 52 transitions. [2024-11-13 23:32:36,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-13 23:32:36,185 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 23:32:36,185 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 23:32:36,206 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8f9f32f-8a79-4047-a84b-eab5851f4041/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-13 23:32:36,385 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8f9f32f-8a79-4047-a84b-eab5851f4041/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 23:32:36,386 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 23:32:36,386 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 23:32:36,386 INFO L85 PathProgramCache]: Analyzing trace with hash 106718690, now seen corresponding path program 1 times [2024-11-13 23:32:36,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-13 23:32:36,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1561018031] [2024-11-13 23:32:36,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:32:36,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 23:32:36,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-13 23:32:36,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1117603407] [2024-11-13 23:32:36,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:32:36,601 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 23:32:36,601 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8f9f32f-8a79-4047-a84b-eab5851f4041/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-13 23:32:36,603 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8f9f32f-8a79-4047-a84b-eab5851f4041/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 23:32:36,604 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8f9f32f-8a79-4047-a84b-eab5851f4041/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-13 23:32:37,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:32:37,094 WARN L253 TraceCheckSpWp]: Trace formula consists of 293 conjuncts, 150 conjuncts are in the unsatisfiable core [2024-11-13 23:32:37,101 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 23:32:37,115 INFO L349 Elim1Store]: treesize reduction 48, result has 2.0 percent of original size [2024-11-13 23:32:37,115 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 61 treesize of output 53 [2024-11-13 23:32:37,197 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 23:32:37,200 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 30 [2024-11-13 23:32:37,206 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 28 [2024-11-13 23:32:37,446 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 44 [2024-11-13 23:32:38,400 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 23:32:38,402 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 23:32:38,403 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 23:32:38,407 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 224 treesize of output 204 [2024-11-13 23:32:38,431 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 410 treesize of output 356 [2024-11-13 23:32:42,796 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 23:32:42,799 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 23:32:46,824 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-13 23:32:46,824 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 184 treesize of output 168 [2024-11-13 23:32:46,837 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 39 [2024-11-13 23:32:46,861 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 22 [2024-11-13 23:32:46,869 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 20 [2024-11-13 23:32:47,031 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-13 23:32:47,032 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 23:32:50,442 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse3 (store |c_#memory_int| c_func_to_recursive_line_39_to_46_0_~q.base (let ((.cse12 (select |c_#memory_int| c_func_to_recursive_line_39_to_46_0_~q.base))) (store .cse12 c_func_to_recursive_line_39_to_46_0_~q.offset (* (select .cse12 c_func_to_recursive_line_39_to_46_0_~q.offset) 2)))))) (let ((.cse9 (select .cse3 c_func_to_recursive_line_39_to_46_0_~b.base))) (let ((.cse2 (div (mod (select .cse9 c_func_to_recursive_line_39_to_46_0_~b.offset) 4294967296) 2))) (and (forall ((v_DerPreprocessor_5 (Array Int Int))) (let ((.cse0 (store .cse3 c_func_to_recursive_line_39_to_46_0_~b.base v_DerPreprocessor_5))) (let ((.cse1 (select (select .cse0 c_func_to_recursive_line_39_to_46_0_~r.base) c_func_to_recursive_line_39_to_46_0_~r.offset))) (or (= (mod (+ (* (select v_DerPreprocessor_5 c_func_to_recursive_line_39_to_46_0_~b.offset) (select (select .cse0 c_func_to_recursive_line_39_to_46_0_~q.base) c_func_to_recursive_line_39_to_46_0_~q.offset)) .cse1) 4294967296) (mod (select (select .cse0 c_func_to_recursive_line_39_to_46_0_~A.base) c_func_to_recursive_line_39_to_46_0_~A.offset) 4294967296)) (< .cse2 (+ (mod .cse1 4294967296) 1)))))) (forall ((v_ArrVal_348 (Array Int Int))) (let ((.cse11 (store .cse3 c_func_to_recursive_line_39_to_46_0_~b.base v_ArrVal_348))) (or (let ((.cse7 (store (store |c_#memory_int| c_func_to_recursive_line_39_to_46_0_~b.base (store .cse9 c_func_to_recursive_line_39_to_46_0_~b.offset .cse2)) c_func_to_recursive_line_39_to_46_0_~q.base (let ((.cse10 (select .cse11 c_func_to_recursive_line_39_to_46_0_~q.base))) (store .cse10 c_func_to_recursive_line_39_to_46_0_~q.offset (+ (select .cse10 c_func_to_recursive_line_39_to_46_0_~q.offset) 1)))))) (let ((.cse8 (select .cse7 c_func_to_recursive_line_39_to_46_0_~r.base))) (let ((.cse5 (select (select .cse7 c_func_to_recursive_line_39_to_46_0_~b.base) c_func_to_recursive_line_39_to_46_0_~b.offset)) (.cse6 (select .cse8 c_func_to_recursive_line_39_to_46_0_~r.offset))) (let ((.cse4 (store .cse7 c_func_to_recursive_line_39_to_46_0_~r.base (store .cse8 c_func_to_recursive_line_39_to_46_0_~r.offset (+ (* (- 1) .cse5) .cse6))))) (= (mod (select (select .cse4 c_func_to_recursive_line_39_to_46_0_~A.base) c_func_to_recursive_line_39_to_46_0_~A.offset) 4294967296) (mod (+ (* 4294967295 .cse5) .cse6 (* (select (select .cse4 c_func_to_recursive_line_39_to_46_0_~b.base) c_func_to_recursive_line_39_to_46_0_~b.offset) (select (select .cse4 c_func_to_recursive_line_39_to_46_0_~q.base) c_func_to_recursive_line_39_to_46_0_~q.offset))) 4294967296)))))) (< (mod (select (select .cse11 c_func_to_recursive_line_39_to_46_0_~r.base) c_func_to_recursive_line_39_to_46_0_~r.offset) 4294967296) .cse2)))))))) is different from false [2024-11-13 23:32:51,165 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-13 23:32:51,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1561018031] [2024-11-13 23:32:51,165 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-13 23:32:51,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1117603407] [2024-11-13 23:32:51,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1117603407] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 23:32:51,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [613089650] [2024-11-13 23:32:51,167 INFO L159 IcfgInterpreter]: Started Sifa with 27 locations of interest [2024-11-13 23:32:51,167 INFO L166 IcfgInterpreter]: Building call graph [2024-11-13 23:32:51,168 FATAL L? ?]: Ignoring exception! java.lang.IllegalArgumentException: Recursive programs are not supported. at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.topsortRelevant(CallGraph.java:132) at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.(CallGraph.java:97) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.(IcfgInterpreter.java:92) at de.uni_freiburg.informatik.ultimate.plugins.sifa.SifaBuilder.construct(SifaBuilder.java:96) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:98) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:407) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:342) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:324) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:429) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:315) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:276) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:170) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:143) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2024-11-13 23:32:51,168 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-13 23:32:51,168 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2024-11-13 23:32:51,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810470599] [2024-11-13 23:32:51,168 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-13 23:32:51,168 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-13 23:32:51,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-13 23:32:51,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-13 23:32:51,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=488, Unknown=2, NotChecked=44, Total=600 [2024-11-13 23:32:51,170 INFO L87 Difference]: Start difference. First operand 46 states and 52 transitions. Second operand has 19 states, 15 states have (on average 1.6) internal successors, (24), 15 states have internal predecessors, (24), 7 states have call successors, (8), 6 states have call predecessors, (8), 4 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2024-11-13 23:32:53,231 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 23:32:55,442 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 23:32:59,041 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 23:33:07,057 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 23:33:14,785 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 23:33:16,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 23:33:16,006 INFO L93 Difference]: Finished difference Result 79 states and 89 transitions. [2024-11-13 23:33:16,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-13 23:33:16,007 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 15 states have (on average 1.6) internal successors, (24), 15 states have internal predecessors, (24), 7 states have call successors, (8), 6 states have call predecessors, (8), 4 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) Word has length 38 [2024-11-13 23:33:16,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 23:33:16,008 INFO L225 Difference]: With dead ends: 79 [2024-11-13 23:33:16,008 INFO L226 Difference]: Without dead ends: 75 [2024-11-13 23:33:16,009 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 210 ImplicationChecksByTransitivity, 15.9s TimeCoverageRelationStatistics Valid=140, Invalid=1046, Unknown=8, NotChecked=66, Total=1260 [2024-11-13 23:33:16,010 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 43 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 568 mSolverCounterSat, 18 mSolverCounterUnsat, 20 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 606 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 568 IncrementalHoareTripleChecker+Invalid, 20 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.7s IncrementalHoareTripleChecker+Time [2024-11-13 23:33:16,010 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 138 Invalid, 606 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 568 Invalid, 20 Unknown, 0 Unchecked, 14.7s Time] [2024-11-13 23:33:16,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2024-11-13 23:33:16,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 72. [2024-11-13 23:33:16,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 45 states have (on average 1.1111111111111112) internal successors, (50), 48 states have internal predecessors, (50), 14 states have call successors, (14), 11 states have call predecessors, (14), 12 states have return successors, (19), 12 states have call predecessors, (19), 12 states have call successors, (19) [2024-11-13 23:33:16,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 83 transitions. [2024-11-13 23:33:16,035 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 83 transitions. Word has length 38 [2024-11-13 23:33:16,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 23:33:16,036 INFO L471 AbstractCegarLoop]: Abstraction has 72 states and 83 transitions. [2024-11-13 23:33:16,036 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 15 states have (on average 1.6) internal successors, (24), 15 states have internal predecessors, (24), 7 states have call successors, (8), 6 states have call predecessors, (8), 4 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2024-11-13 23:33:16,036 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 83 transitions. [2024-11-13 23:33:16,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-13 23:33:16,037 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 23:33:16,037 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 23:33:16,043 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8f9f32f-8a79-4047-a84b-eab5851f4041/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-13 23:33:16,237 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8f9f32f-8a79-4047-a84b-eab5851f4041/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-11-13 23:33:16,237 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 23:33:16,238 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 23:33:16,238 INFO L85 PathProgramCache]: Analyzing trace with hash 88249164, now seen corresponding path program 1 times [2024-11-13 23:33:16,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-13 23:33:16,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1798632203] [2024-11-13 23:33:16,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:33:16,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 23:33:16,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:33:18,235 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-13 23:33:18,235 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-13 23:33:18,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1798632203] [2024-11-13 23:33:18,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1798632203] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 23:33:18,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1595288488] [2024-11-13 23:33:18,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:33:18,235 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 23:33:18,236 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8f9f32f-8a79-4047-a84b-eab5851f4041/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-13 23:33:18,237 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8f9f32f-8a79-4047-a84b-eab5851f4041/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 23:33:18,238 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8f9f32f-8a79-4047-a84b-eab5851f4041/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-13 23:33:18,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:33:18,645 INFO L255 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 77 conjuncts are in the unsatisfiable core [2024-11-13 23:33:18,650 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 23:33:18,728 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 23:33:18,728 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 418 treesize of output 430 [2024-11-13 23:33:19,123 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 1 [2024-11-13 23:33:19,224 INFO L349 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2024-11-13 23:33:19,225 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 958 treesize of output 942 [2024-11-13 23:33:19,274 WARN L214 Elim1Store]: Array PQE input equivalent to false [2024-11-13 23:33:24,074 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 23:33:24,078 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 23:33:24,482 INFO L349 Elim1Store]: treesize reduction 144, result has 26.5 percent of original size [2024-11-13 23:33:24,483 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 99 treesize of output 81 [2024-11-13 23:33:24,594 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 23:33:24,597 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 23:33:24,626 INFO L349 Elim1Store]: treesize reduction 104, result has 1.0 percent of original size [2024-11-13 23:33:24,626 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 59 treesize of output 30 [2024-11-13 23:33:29,046 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 30 [2024-11-13 23:33:29,488 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 23:33:29,489 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 23:33:35,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1595288488] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 23:33:35,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1964713374] [2024-11-13 23:33:35,817 INFO L159 IcfgInterpreter]: Started Sifa with 30 locations of interest [2024-11-13 23:33:35,817 INFO L166 IcfgInterpreter]: Building call graph [2024-11-13 23:33:35,817 FATAL L? ?]: Ignoring exception! java.lang.IllegalArgumentException: Recursive programs are not supported. at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.topsortRelevant(CallGraph.java:132) at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.(CallGraph.java:97) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.(IcfgInterpreter.java:92) at de.uni_freiburg.informatik.ultimate.plugins.sifa.SifaBuilder.construct(SifaBuilder.java:96) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:98) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:407) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:342) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:324) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:429) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:315) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:276) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:170) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:143) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2024-11-13 23:33:35,818 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-13 23:33:35,818 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 18] total 26 [2024-11-13 23:33:35,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865229142] [2024-11-13 23:33:35,818 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-13 23:33:35,819 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-13 23:33:35,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-13 23:33:35,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-13 23:33:35,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=1070, Unknown=6, NotChecked=0, Total=1190 [2024-11-13 23:33:35,821 INFO L87 Difference]: Start difference. First operand 72 states and 83 transitions. Second operand has 26 states, 16 states have (on average 2.1875) internal successors, (35), 21 states have internal predecessors, (35), 11 states have call successors, (11), 4 states have call predecessors, (11), 9 states have return successors, (11), 9 states have call predecessors, (11), 10 states have call successors, (11) [2024-11-13 23:33:39,528 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 23:33:41,604 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 23:33:43,755 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 23:33:45,805 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 23:33:49,897 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 23:33:52,227 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 23:33:54,277 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 23:33:56,478 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 23:33:59,265 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 23:34:01,544 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 23:34:01,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 23:34:01,892 INFO L93 Difference]: Finished difference Result 99 states and 112 transitions. [2024-11-13 23:34:01,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-11-13 23:34:01,893 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 16 states have (on average 2.1875) internal successors, (35), 21 states have internal predecessors, (35), 11 states have call successors, (11), 4 states have call predecessors, (11), 9 states have return successors, (11), 9 states have call predecessors, (11), 10 states have call successors, (11) Word has length 38 [2024-11-13 23:34:01,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 23:34:01,894 INFO L225 Difference]: With dead ends: 99 [2024-11-13 23:34:01,895 INFO L226 Difference]: Without dead ends: 81 [2024-11-13 23:34:01,896 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 43 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 683 ImplicationChecksByTransitivity, 19.1s TimeCoverageRelationStatistics Valid=275, Invalid=2580, Unknown=7, NotChecked=0, Total=2862 [2024-11-13 23:34:01,897 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 36 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 609 mSolverCounterSat, 25 mSolverCounterUnsat, 15 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 127 SdHoareTripleChecker+Invalid, 649 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 609 IncrementalHoareTripleChecker+Invalid, 15 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.2s IncrementalHoareTripleChecker+Time [2024-11-13 23:34:01,897 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 127 Invalid, 649 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 609 Invalid, 15 Unknown, 0 Unchecked, 22.2s Time] [2024-11-13 23:34:01,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2024-11-13 23:34:01,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2024-11-13 23:34:01,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 52 states have (on average 1.0769230769230769) internal successors, (56), 53 states have internal predecessors, (56), 15 states have call successors, (15), 13 states have call predecessors, (15), 13 states have return successors, (22), 14 states have call predecessors, (22), 14 states have call successors, (22) [2024-11-13 23:34:01,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 93 transitions. [2024-11-13 23:34:01,935 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 93 transitions. Word has length 38 [2024-11-13 23:34:01,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 23:34:01,935 INFO L471 AbstractCegarLoop]: Abstraction has 81 states and 93 transitions. [2024-11-13 23:34:01,936 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 16 states have (on average 2.1875) internal successors, (35), 21 states have internal predecessors, (35), 11 states have call successors, (11), 4 states have call predecessors, (11), 9 states have return successors, (11), 9 states have call predecessors, (11), 10 states have call successors, (11) [2024-11-13 23:34:01,936 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 93 transitions. [2024-11-13 23:34:01,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-11-13 23:34:01,940 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 23:34:01,941 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 23:34:01,961 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8f9f32f-8a79-4047-a84b-eab5851f4041/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-13 23:34:02,144 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8f9f32f-8a79-4047-a84b-eab5851f4041/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-11-13 23:34:02,144 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 23:34:02,145 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 23:34:02,145 INFO L85 PathProgramCache]: Analyzing trace with hash 651907113, now seen corresponding path program 2 times [2024-11-13 23:34:02,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-13 23:34:02,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1900324989] [2024-11-13 23:34:02,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:34:02,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 23:34:02,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-13 23:34:02,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1118451561] [2024-11-13 23:34:02,450 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-13 23:34:02,450 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 23:34:02,450 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8f9f32f-8a79-4047-a84b-eab5851f4041/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-13 23:34:02,452 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8f9f32f-8a79-4047-a84b-eab5851f4041/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 23:34:02,454 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8f9f32f-8a79-4047-a84b-eab5851f4041/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-13 23:34:05,529 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-13 23:34:05,529 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 23:34:05,554 WARN L253 TraceCheckSpWp]: Trace formula consists of 322 conjuncts, 226 conjuncts are in the unsatisfiable core [2024-11-13 23:34:05,561 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 23:34:05,587 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-13 23:34:05,596 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 1 [2024-11-13 23:34:05,631 INFO L349 Elim1Store]: treesize reduction 48, result has 2.0 percent of original size [2024-11-13 23:34:05,631 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 61 treesize of output 53 [2024-11-13 23:34:06,496 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 23:34:06,498 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 23:34:06,500 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 23:34:06,507 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 10 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 81 treesize of output 41 [2024-11-13 23:34:07,982 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 23:34:07,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 23:34:08,061 INFO L349 Elim1Store]: treesize reduction 38, result has 11.6 percent of original size [2024-11-13 23:34:08,061 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 8 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 80 treesize of output 81 [2024-11-13 23:34:08,087 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 21 [2024-11-13 23:34:08,140 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 24 [2024-11-13 23:37:54,952 WARN L286 SmtUtils]: Spent 3.70m on a formula simplification. DAG size of input: 578 DAG size of output: 128 (called from [L 346] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2024-11-13 23:37:54,952 INFO L349 Elim1Store]: treesize reduction 3988, result has 15.3 percent of original size [2024-11-13 23:37:54,954 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 21 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 26 new quantified variables, introduced 119 case distinctions, treesize of input 3676 treesize of output 4760 [2024-11-13 23:37:55,864 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 3580 treesize of output 3046 [2024-11-13 23:38:01,353 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 23:38:01,572 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 23:38:01,662 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 23:38:01,964 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 23:38:02,393 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 23:38:02,434 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 23:38:02,540 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 23:38:02,789 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 23:38:03,300 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-13 23:38:03,622 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 23:38:03,675 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 23:38:03,714 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 23:38:04,854 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 23:38:04,918 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 23:38:05,215 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 23:38:08,471 WARN L161 IndexEqualityManager]: solver failed to check if following equality is implied: (= (select v_arrayElimArr_17 func_to_recursive_line_39_to_46_0_~b.base) (select v_arrayElimArr_16 func_to_recursive_line_39_to_46_0_~r.base)) [2024-11-13 23:38:08,530 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 23:38:09,177 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 23:38:09,327 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 23:38:11,250 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 23:38:13,045 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 23:38:13,125 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 23:38:13,604 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 23:38:14,624 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 23:38:15,678 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 23:38:18,061 WARN L177 IndexEqualityManager]: solver failed to check if following not equals relation is implied: (= (select v_arrayElimArr_14 func_to_recursive_line_39_to_46_0_~r.base) (select v_arrayElimArr_16 func_to_recursive_line_39_to_46_0_~r.base)) [2024-11-13 23:38:20,064 WARN L161 IndexEqualityManager]: solver failed to check if following equality is implied: (= (select v_arrayElimArr_22 func_to_recursive_line_39_to_46_0_~b.base) (select v_arrayElimArr_16 func_to_recursive_line_39_to_46_0_~r.base)) [2024-11-13 23:38:20,218 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 23:38:20,477 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 23:38:25,071 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 23:38:28,935 WARN L177 IndexEqualityManager]: solver failed to check if following not equals relation is implied: (= (select v_arrayElimArr_16 func_to_recursive_line_39_to_46_0_~q.base) (let ((.cse0 (select (store (store (store v_arrayElimArr_14 func_to_recursive_line_39_to_46_0_~b.base v_DerPreprocessor_7) func_to_recursive_line_39_to_46_0_~r.base v_DerPreprocessor_8) func_to_recursive_line_39_to_46_0_~q.base v_arrayElimArr_33) func_to_recursive_line_39_to_46_0_~r.base))) (store .cse0 0 (select .cse0 0)))) [2024-11-13 23:38:29,646 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 23:38:29,694 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 23:38:29,875 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 23:38:29,999 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 23:38:32,174 WARN L177 IndexEqualityManager]: solver failed to check if following not equals relation is implied: (= (select v_arrayElimArr_26 func_to_recursive_line_39_to_46_0_~q.base) (select (store (store (store v_arrayElimArr_14 func_to_recursive_line_39_to_46_0_~b.base v_DerPreprocessor_7) func_to_recursive_line_39_to_46_0_~r.base v_DerPreprocessor_8) func_to_recursive_line_39_to_46_0_~q.base v_arrayElimArr_33) func_to_recursive_line_39_to_46_0_~r.base)) [2024-11-13 23:38:33,105 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 23:38:33,222 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 23:38:35,472 WARN L177 IndexEqualityManager]: solver failed to check if following not equals relation is implied: (= (select (store (store (store v_arrayElimArr_14 func_to_recursive_line_39_to_46_0_~b.base v_DerPreprocessor_7) func_to_recursive_line_39_to_46_0_~r.base v_DerPreprocessor_8) func_to_recursive_line_39_to_46_0_~q.base v_arrayElimArr_33) func_to_recursive_line_39_to_46_0_~r.base) (select v_arrayElimArr_30 func_to_recursive_line_39_to_46_0_~q.base)) [2024-11-13 23:38:35,852 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 23:38:38,428 WARN L177 IndexEqualityManager]: solver failed to check if following not equals relation is implied: (= (select (store (store (store v_arrayElimArr_14 func_to_recursive_line_39_to_46_0_~b.base v_DerPreprocessor_7) func_to_recursive_line_39_to_46_0_~r.base v_DerPreprocessor_8) func_to_recursive_line_39_to_46_0_~q.base v_arrayElimArr_33) func_to_recursive_line_39_to_46_0_~r.base) (select v_arrayElimArr_17 func_to_recursive_line_39_to_46_0_~q.base)) [2024-11-13 23:38:38,973 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 23:38:40,274 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 23:38:40,492 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 23:38:40,691 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 23:38:40,963 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 23:38:44,028 WARN L177 IndexEqualityManager]: solver failed to check if following not equals relation is implied: (= (select (store (store (store v_arrayElimArr_14 func_to_recursive_line_39_to_46_0_~b.base v_DerPreprocessor_7) func_to_recursive_line_39_to_46_0_~r.base v_DerPreprocessor_8) func_to_recursive_line_39_to_46_0_~q.base v_arrayElimArr_33) func_to_recursive_line_39_to_46_0_~r.base) (select v_arrayElimArr_18 func_to_recursive_line_39_to_46_0_~r.base)) [2024-11-13 23:38:47,751 WARN L177 IndexEqualityManager]: solver failed to check if following not equals relation is implied: (= (select (store (store (store v_arrayElimArr_14 func_to_recursive_line_39_to_46_0_~b.base v_DerPreprocessor_7) func_to_recursive_line_39_to_46_0_~r.base v_DerPreprocessor_8) func_to_recursive_line_39_to_46_0_~q.base v_arrayElimArr_33) func_to_recursive_line_39_to_46_0_~r.base) (select v_arrayElimArr_24 func_to_recursive_line_39_to_46_0_~q.base)) [2024-11-13 23:38:49,896 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 23:38:53,219 WARN L177 IndexEqualityManager]: solver failed to check if following not equals relation is implied: (= (select v_arrayElimArr_14 func_to_recursive_line_39_to_46_0_~q.base) (select (store (store (store v_arrayElimArr_14 func_to_recursive_line_39_to_46_0_~b.base v_DerPreprocessor_7) func_to_recursive_line_39_to_46_0_~r.base v_DerPreprocessor_8) func_to_recursive_line_39_to_46_0_~q.base v_arrayElimArr_33) func_to_recursive_line_39_to_46_0_~r.base)) [2024-11-13 23:38:54,564 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 23:38:54,613 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 23:38:56,665 WARN L177 IndexEqualityManager]: solver failed to check if following not equals relation is implied: (= (select (store (store (store v_arrayElimArr_14 func_to_recursive_line_39_to_46_0_~b.base v_DerPreprocessor_7) func_to_recursive_line_39_to_46_0_~r.base v_DerPreprocessor_8) func_to_recursive_line_39_to_46_0_~q.base v_arrayElimArr_33) func_to_recursive_line_39_to_46_0_~r.base) (select v_arrayElimArr_32 func_to_recursive_line_39_to_46_0_~q.base)) [2024-11-13 23:38:57,705 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 23:38:57,978 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-13 23:38:58,147 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 23:38:58,438 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 23:38:58,496 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 23:38:58,554 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 23:39:00,557 WARN L161 IndexEqualityManager]: solver failed to check if following equality is implied: (= (select v_arrayElimArr_23 func_to_recursive_line_39_to_46_0_~b.base) v_arrayElimArr_33) [2024-11-13 23:39:00,561 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 23:39:00,562 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-13 23:39:00,981 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 23:39:01,155 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 23:39:01,442 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 23:39:01,442 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-13 23:39:01,669 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 23:39:01,670 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-13 23:39:01,973 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 23:39:02,004 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 23:39:02,195 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 23:39:02,972 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 23:39:03,252 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-13 23:39:03,333 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 23:39:03,461 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-13 23:39:03,612 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 23:39:03,615 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-13 23:39:04,109 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-13 23:39:04,511 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 23:39:04,511 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-13 23:39:04,552 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 23:39:04,580 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 23:39:04,604 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 23:39:04,773 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 23:39:04,804 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 23:39:05,221 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 23:39:05,444 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 23:39:05,522 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 23:39:05,523 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-13 23:39:05,879 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 23:39:06,194 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 23:39:06,196 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-13 23:39:06,261 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 23:39:06,262 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-13 23:39:06,648 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 23:39:06,675 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 23:39:06,742 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 23:39:06,794 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 23:39:06,796 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-13 23:39:07,162 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 23:39:07,164 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-13 23:39:07,165 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-13 23:39:07,215 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 23:39:07,216 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-13 23:39:07,217 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-13 23:39:07,466 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-13 23:39:07,864 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-13 23:39:07,979 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 23:39:08,010 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 23:39:08,079 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 23:39:08,351 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 23:39:08,353 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-13 23:39:08,440 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 23:39:08,732 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 23:39:08,779 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 23:39:09,208 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 23:39:09,259 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 23:39:09,665 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 23:39:09,934 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 23:39:09,976 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 23:39:09,977 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-13 23:39:09,999 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 23:39:10,032 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 23:39:10,544 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 23:39:10,544 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-13 23:39:10,666 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 23:39:11,385 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 23:39:11,386 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-13 23:39:11,472 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 23:39:11,497 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 23:39:11,522 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 23:39:13,984 WARN L177 IndexEqualityManager]: solver failed to check if following not equals relation is implied: (= (select v_arrayElimArr_23 func_to_recursive_line_39_to_46_0_~r.base) (select (store (store (store v_arrayElimArr_14 func_to_recursive_line_39_to_46_0_~b.base v_DerPreprocessor_7) func_to_recursive_line_39_to_46_0_~r.base v_DerPreprocessor_8) func_to_recursive_line_39_to_46_0_~q.base v_arrayElimArr_33) func_to_recursive_line_39_to_46_0_~b.base)) [2024-11-13 23:39:16,451 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 23:39:16,867 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 23:39:16,981 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 23:39:19,044 WARN L177 IndexEqualityManager]: solver failed to check if following not equals relation is implied: (= (select v_arrayElimArr_14 func_to_recursive_line_39_to_46_0_~r.base) (select v_arrayElimArr_23 func_to_recursive_line_39_to_46_0_~r.base)) [2024-11-13 23:39:20,785 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 23:39:21,209 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-13 23:39:21,693 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-13 23:39:21,743 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 23:39:21,744 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-13 23:39:23,956 WARN L177 IndexEqualityManager]: solver failed to check if following not equals relation is implied: (= (select v_arrayElimArr_31 func_to_recursive_line_39_to_46_0_~r.base) (select v_arrayElimArr_30 func_to_recursive_line_39_to_46_0_~b.base)) [2024-11-13 23:39:23,957 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-13 23:39:26,998 WARN L177 IndexEqualityManager]: solver failed to check if following not equals relation is implied: (= (let ((.cse0 (select (store (store (store v_arrayElimArr_14 func_to_recursive_line_39_to_46_0_~b.base v_DerPreprocessor_7) func_to_recursive_line_39_to_46_0_~r.base v_DerPreprocessor_8) func_to_recursive_line_39_to_46_0_~q.base v_arrayElimArr_33) func_to_recursive_line_39_to_46_0_~r.base))) (store .cse0 0 (+ (select .cse0 0) (- 1)))) (select v_arrayElimArr_30 func_to_recursive_line_39_to_46_0_~b.base)) [2024-11-13 23:39:27,468 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-13 23:39:27,620 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 23:39:27,823 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 23:39:27,876 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 23:39:27,969 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 23:39:28,213 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 23:39:28,301 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 23:39:28,524 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 23:39:28,705 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 23:39:28,889 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 23:39:29,046 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 23:39:29,240 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 23:39:29,243 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-13 23:39:29,245 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-13 23:39:29,277 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 23:39:31,351 WARN L177 IndexEqualityManager]: solver failed to check if following not equals relation is implied: (= (select v_arrayElimArr_31 func_to_recursive_line_39_to_46_0_~r.base) (select v_arrayElimArr_26 func_to_recursive_line_39_to_46_0_~r.base)) [2024-11-13 23:39:33,658 WARN L177 IndexEqualityManager]: solver failed to check if following not equals relation is implied: (= (let ((.cse0 (select (store (store (store v_arrayElimArr_14 func_to_recursive_line_39_to_46_0_~b.base v_DerPreprocessor_7) func_to_recursive_line_39_to_46_0_~r.base v_DerPreprocessor_8) func_to_recursive_line_39_to_46_0_~q.base v_arrayElimArr_33) func_to_recursive_line_39_to_46_0_~r.base))) (store .cse0 0 (+ (select .cse0 0) (- 1)))) (select v_arrayElimArr_26 func_to_recursive_line_39_to_46_0_~r.base)) [2024-11-13 23:39:35,540 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-13 23:39:35,704 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 23:39:35,990 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 23:39:36,044 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 23:39:36,245 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 23:39:36,650 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-13 23:39:37,020 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-13 23:39:37,769 INFO L224 Elim1Store]: Index analysis took 95859 ms [2024-11-13 23:39:37,779 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 18 stores, 3 select indices, 3 select index equivalence classes, 51 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 1997 treesize of output 7385 [2024-11-13 23:40:22,601 WARN L286 SmtUtils]: Spent 9.38s on a formula simplification that was a NOOP. DAG size: 212 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-13 23:41:04,329 WARN L286 SmtUtils]: Spent 9.95s on a formula simplification that was a NOOP. DAG size: 212 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-13 23:41:31,357 WARN L286 SmtUtils]: Spent 11.67s on a formula simplification that was a NOOP. DAG size: 212 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-13 23:41:31,505 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 23:41:31,509 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 23:41:31,539 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 23:41:31,992 INFO L349 Elim1Store]: treesize reduction 48, result has 2.0 percent of original size [2024-11-13 23:41:31,995 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 17228 treesize of output 17170 [2024-11-13 23:41:32,329 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 4 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 2794 treesize of output 2693 [2024-11-13 23:41:33,077 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 23:41:33,083 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 23:41:33,090 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 23:41:33,097 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 23:41:33,112 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 23:41:33,135 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 23:41:33,140 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 23:41:33,155 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 23:41:33,171 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 23:41:33,178 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 23:41:33,185 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 23:41:33,192 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 23:41:33,199 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 23:41:33,205 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 23:41:33,250 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 23:41:33,257 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 23:41:33,265 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 23:41:33,272 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 23:41:33,280 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 23:41:33,286 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 23:41:33,293 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 23:41:33,301 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 23:41:33,309 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 23:41:33,316 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 23:41:33,322 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 23:41:33,338 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 23:41:33,346 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 23:41:33,377 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 23:41:33,385 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 23:41:33,392 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 23:41:33,405 INFO L224 Elim1Store]: Index analysis took 332 ms [2024-11-13 23:41:33,412 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 11 stores, 1 select indices, 1 select index equivalence classes, 41 disjoint index pairs (out of 0 index pairs), introduced 12 new quantified variables, introduced 0 case distinctions, treesize of input 2998 treesize of output 2819 [2024-11-13 23:41:34,929 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 9 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 10 new quantified variables, introduced 0 case distinctions, treesize of input 2100 treesize of output 2180 [2024-11-13 23:41:40,457 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 91 treesize of output 85 [2024-11-13 23:41:40,736 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 116 treesize of output 110 [2024-11-13 23:41:46,868 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 7 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 294 treesize of output 357 [2024-11-13 23:41:46,916 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2024-11-13 23:41:46,983 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 3 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 169 treesize of output 111 [2024-11-13 23:41:47,000 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 134 treesize of output 102 [2024-11-13 23:41:47,070 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 23:41:47,080 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 4 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 118 treesize of output 78 [2024-11-13 23:41:47,139 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 9 [2024-11-13 23:41:48,407 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 2 proven. 13 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-13 23:41:48,407 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 23:43:43,741 WARN L286 SmtUtils]: Spent 6.28s on a formula simplification that was a NOOP. DAG size: 101 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-13 23:43:43,743 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-13 23:43:43,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1900324989] [2024-11-13 23:43:43,743 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-13 23:43:43,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1118451561] [2024-11-13 23:43:43,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1118451561] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 23:43:43,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1932281725] [2024-11-13 23:43:43,745 INFO L159 IcfgInterpreter]: Started Sifa with 27 locations of interest [2024-11-13 23:43:43,745 INFO L166 IcfgInterpreter]: Building call graph [2024-11-13 23:43:43,745 FATAL L? ?]: Ignoring exception! java.lang.IllegalArgumentException: Recursive programs are not supported. at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.topsortRelevant(CallGraph.java:132) at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.(CallGraph.java:97) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.(IcfgInterpreter.java:92) at de.uni_freiburg.informatik.ultimate.plugins.sifa.SifaBuilder.construct(SifaBuilder.java:96) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:98) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:407) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:342) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:324) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:429) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:315) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:276) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:170) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:143) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2024-11-13 23:43:43,746 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-13 23:43:43,746 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2024-11-13 23:43:43,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488739573] [2024-11-13 23:43:43,746 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-13 23:43:43,746 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-13 23:43:43,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-13 23:43:43,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-13 23:43:43,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=1208, Unknown=18, NotChecked=0, Total=1332 [2024-11-13 23:43:43,748 INFO L87 Difference]: Start difference. First operand 81 states and 93 transitions. Second operand has 27 states, 19 states have (on average 1.368421052631579) internal successors, (26), 21 states have internal predecessors, (26), 9 states have call successors, (9), 6 states have call predecessors, (9), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-13 23:44:07,405 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.39s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 23:44:09,525 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 23:44:11,991 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 23:44:13,995 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 23:44:15,004 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 23:44:25,214 WARN L286 SmtUtils]: Spent 7.28s on a formula simplification that was a NOOP. DAG size: 214 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-13 23:46:24,279 WARN L286 SmtUtils]: Spent 1.62m on a formula simplification that was a NOOP. DAG size: 386 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-13 23:46:26,972 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 23:46:28,979 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 23:46:31,077 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 23:46:33,953 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0]