./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test3-2.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_cbdf9a67-d127-4015-b81f-4708210fd446/bin/utaipan-verify-sOmjnqqW8E/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbdf9a67-d127-4015-b81f-4708210fd446/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_cbdf9a67-d127-4015-b81f-4708210fd446/bin/utaipan-verify-sOmjnqqW8E/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbdf9a67-d127-4015-b81f-4708210fd446/bin/utaipan-verify-sOmjnqqW8E/config/TaipanReach.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test3-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbdf9a67-d127-4015-b81f-4708210fd446/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_cbdf9a67-d127-4015-b81f-4708210fd446/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 72a3b80a468e10df778a3b8ff41e4c2b1e0b82c1005f056b209a19315511b1a5 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-14 05:07:31,457 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-14 05:07:31,549 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbdf9a67-d127-4015-b81f-4708210fd446/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-Reach-32bit-Taipan_Default.epf [2024-11-14 05:07:31,558 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-14 05:07:31,558 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-14 05:07:31,583 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-14 05:07:31,584 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-14 05:07:31,584 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-14 05:07:31,585 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-14 05:07:31,585 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-14 05:07:31,585 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-14 05:07:31,585 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-14 05:07:31,585 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-14 05:07:31,585 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-14 05:07:31,585 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-14 05:07:31,585 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-14 05:07:31,585 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-14 05:07:31,585 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-14 05:07:31,588 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-14 05:07:31,588 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-14 05:07:31,588 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-14 05:07:31,588 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-14 05:07:31,589 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-14 05:07:31,589 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-14 05:07:31,589 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-14 05:07:31,590 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-14 05:07:31,590 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-14 05:07:31,590 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-14 05:07:31,590 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-14 05:07:31,590 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-14 05:07:31,590 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-14 05:07:31,590 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-14 05:07:31,590 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-14 05:07:31,591 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-14 05:07:31,591 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-14 05:07:31,592 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-14 05:07:31,592 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-14 05:07:31,592 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-14 05:07:31,592 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 05:07:31,592 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-14 05:07:31,592 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-14 05:07:31,593 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-14 05:07:31,593 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-14 05:07:31,593 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-14 05:07:31,593 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-14 05:07:31,593 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-14 05:07:31,593 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-14 05:07:31,593 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_cbdf9a67-d127-4015-b81f-4708210fd446/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 -> 72a3b80a468e10df778a3b8ff41e4c2b1e0b82c1005f056b209a19315511b1a5 [2024-11-14 05:07:31,901 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-14 05:07:31,913 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-14 05:07:31,917 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-14 05:07:31,918 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-14 05:07:31,918 INFO L274 PluginConnector]: CDTParser initialized [2024-11-14 05:07:31,920 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbdf9a67-d127-4015-b81f-4708210fd446/bin/utaipan-verify-sOmjnqqW8E/../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test3-2.i Unable to find full path for "g++" [2024-11-14 05:07:33,886 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-14 05:07:34,282 INFO L384 CDTParser]: Found 1 translation units. [2024-11-14 05:07:34,282 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbdf9a67-d127-4015-b81f-4708210fd446/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test3-2.i [2024-11-14 05:07:34,299 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbdf9a67-d127-4015-b81f-4708210fd446/bin/utaipan-verify-sOmjnqqW8E/data/58b04e54c/faa1114665344497ba6fa33fc008fb3c/FLAGc9e200e0a [2024-11-14 05:07:34,317 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbdf9a67-d127-4015-b81f-4708210fd446/bin/utaipan-verify-sOmjnqqW8E/data/58b04e54c/faa1114665344497ba6fa33fc008fb3c [2024-11-14 05:07:34,320 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-14 05:07:34,323 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-14 05:07:34,324 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-14 05:07:34,325 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-14 05:07:34,329 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-14 05:07:34,330 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 05:07:34" (1/1) ... [2024-11-14 05:07:34,333 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@21e2e88e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:07:34, skipping insertion in model container [2024-11-14 05:07:34,334 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 05:07:34" (1/1) ... [2024-11-14 05:07:34,399 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-14 05:07:34,866 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_cbdf9a67-d127-4015-b81f-4708210fd446/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test3-2.i[33021,33034] [2024-11-14 05:07:34,997 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_cbdf9a67-d127-4015-b81f-4708210fd446/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test3-2.i[44590,44603] [2024-11-14 05:07:35,020 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 05:07:35,043 INFO L200 MainTranslator]: Completed pre-run [2024-11-14 05:07:35,081 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_cbdf9a67-d127-4015-b81f-4708210fd446/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test3-2.i[33021,33034] [2024-11-14 05:07:35,184 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_cbdf9a67-d127-4015-b81f-4708210fd446/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test3-2.i[44590,44603] [2024-11-14 05:07:35,193 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 05:07:35,226 INFO L204 MainTranslator]: Completed translation [2024-11-14 05:07:35,227 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:07:35 WrapperNode [2024-11-14 05:07:35,227 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-14 05:07:35,228 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-14 05:07:35,228 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-14 05:07:35,228 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-14 05:07:35,235 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:07:35" (1/1) ... [2024-11-14 05:07:35,266 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:07:35" (1/1) ... [2024-11-14 05:07:35,333 INFO L138 Inliner]: procedures = 177, calls = 328, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1581 [2024-11-14 05:07:35,334 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-14 05:07:35,334 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-14 05:07:35,335 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-14 05:07:35,335 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-14 05:07:35,342 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:07:35" (1/1) ... [2024-11-14 05:07:35,342 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:07:35" (1/1) ... [2024-11-14 05:07:35,365 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:07:35" (1/1) ... [2024-11-14 05:07:35,365 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:07:35" (1/1) ... [2024-11-14 05:07:35,441 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:07:35" (1/1) ... [2024-11-14 05:07:35,455 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:07:35" (1/1) ... [2024-11-14 05:07:35,460 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:07:35" (1/1) ... [2024-11-14 05:07:35,464 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:07:35" (1/1) ... [2024-11-14 05:07:35,475 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-14 05:07:35,476 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-14 05:07:35,476 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-14 05:07:35,477 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-14 05:07:35,478 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:07:35" (1/1) ... [2024-11-14 05:07:35,509 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 05:07:35,524 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbdf9a67-d127-4015-b81f-4708210fd446/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:07:35,536 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbdf9a67-d127-4015-b81f-4708210fd446/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-14 05:07:35,539 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbdf9a67-d127-4015-b81f-4708210fd446/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-14 05:07:35,568 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-11-14 05:07:35,568 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-14 05:07:35,568 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-14 05:07:35,569 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-11-14 05:07:35,569 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2024-11-14 05:07:35,569 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2024-11-14 05:07:35,569 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-14 05:07:35,569 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-14 05:07:35,569 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2024-11-14 05:07:35,569 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-14 05:07:35,569 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2024-11-14 05:07:35,569 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-14 05:07:35,569 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-14 05:07:35,570 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-14 05:07:35,570 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-14 05:07:35,828 INFO L238 CfgBuilder]: Building ICFG [2024-11-14 05:07:35,830 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-14 05:07:37,813 INFO L? ?]: Removed 340 outVars from TransFormulas that were not future-live. [2024-11-14 05:07:37,813 INFO L287 CfgBuilder]: Performing block encoding [2024-11-14 05:07:39,681 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-14 05:07:39,682 INFO L316 CfgBuilder]: Removed 72 assume(true) statements. [2024-11-14 05:07:39,682 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 05:07:39 BoogieIcfgContainer [2024-11-14 05:07:39,682 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-14 05:07:39,686 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-14 05:07:39,686 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-14 05:07:39,692 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-14 05:07:39,692 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.11 05:07:34" (1/3) ... [2024-11-14 05:07:39,693 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b76106d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 05:07:39, skipping insertion in model container [2024-11-14 05:07:39,693 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:07:35" (2/3) ... [2024-11-14 05:07:39,693 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b76106d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 05:07:39, skipping insertion in model container [2024-11-14 05:07:39,693 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 05:07:39" (3/3) ... [2024-11-14 05:07:39,695 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_OAT_test3-2.i [2024-11-14 05:07:39,713 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-14 05:07:39,715 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG uthash_OAT_test3-2.i that has 3 procedures, 146 locations, 1 initial locations, 41 loop locations, and 2 error locations. [2024-11-14 05:07:39,773 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-14 05:07:39,786 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;@6ff29f0f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-14 05:07:39,786 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-14 05:07:39,791 INFO L276 IsEmpty]: Start isEmpty. Operand has 146 states, 133 states have (on average 1.744360902255639) internal successors, (232), 140 states have internal predecessors, (232), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-14 05:07:39,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-14 05:07:39,798 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:07:39,799 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:07:39,800 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 05:07:39,804 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:07:39,804 INFO L85 PathProgramCache]: Analyzing trace with hash -2141066648, now seen corresponding path program 1 times [2024-11-14 05:07:39,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:07:39,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1604588008] [2024-11-14 05:07:39,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:07:39,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:07:39,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:07:39,999 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:07:40,001 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:07:40,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1604588008] [2024-11-14 05:07:40,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1604588008] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 05:07:40,002 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 05:07:40,002 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-14 05:07:40,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370145120] [2024-11-14 05:07:40,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:07:40,012 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-14 05:07:40,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:07:40,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-14 05:07:40,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-14 05:07:40,037 INFO L87 Difference]: Start difference. First operand has 146 states, 133 states have (on average 1.744360902255639) internal successors, (232), 140 states have internal predecessors, (232), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:07:42,087 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-14 05:07:44,104 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-14 05:07:46,142 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-14 05:07:48,159 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-14 05:07:48,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:07:48,585 INFO L93 Difference]: Finished difference Result 291 states and 500 transitions. [2024-11-14 05:07:48,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-14 05:07:48,592 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2024-11-14 05:07:48,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:07:48,601 INFO L225 Difference]: With dead ends: 291 [2024-11-14 05:07:48,601 INFO L226 Difference]: Without dead ends: 130 [2024-11-14 05:07:48,604 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 [2024-11-14 05:07:48,607 INFO L432 NwaCegarLoop]: 144 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 0 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.5s IncrementalHoareTripleChecker+Time [2024-11-14 05:07:48,608 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 144 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 29 Invalid, 4 Unknown, 0 Unchecked, 8.5s Time] [2024-11-14 05:07:48,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2024-11-14 05:07:48,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 130. [2024-11-14 05:07:48,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 118 states have (on average 1.2033898305084745) internal successors, (142), 124 states have internal predecessors, (142), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-14 05:07:48,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 158 transitions. [2024-11-14 05:07:48,654 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 158 transitions. Word has length 8 [2024-11-14 05:07:48,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:07:48,654 INFO L471 AbstractCegarLoop]: Abstraction has 130 states and 158 transitions. [2024-11-14 05:07:48,655 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:07:48,655 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 158 transitions. [2024-11-14 05:07:48,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-14 05:07:48,656 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:07:48,656 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:07:48,656 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-14 05:07:48,656 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 05:07:48,657 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:07:48,657 INFO L85 PathProgramCache]: Analyzing trace with hash 197754834, now seen corresponding path program 1 times [2024-11-14 05:07:48,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:07:48,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155810585] [2024-11-14 05:07:48,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:07:48,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:07:48,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:07:48,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:07:48,986 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:07:48,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155810585] [2024-11-14 05:07:48,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [155810585] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 05:07:48,987 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 05:07:48,988 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-14 05:07:48,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906916810] [2024-11-14 05:07:48,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:07:48,990 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-14 05:07:48,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:07:48,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-14 05:07:48,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-14 05:07:48,991 INFO L87 Difference]: Start difference. First operand 130 states and 158 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:07:51,048 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 05:07:53,051 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 05:07:55,775 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-14 05:07:57,778 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 05:07:59,781 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-14 05:08:01,798 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 05:08:03,841 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 05:08:05,850 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 05:08:07,860 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 05:08:09,866 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 05:08:12,097 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-14 05:08:14,100 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 05:08:16,103 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-14 05:08:18,112 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-14 05:08:20,121 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 05:08:22,124 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-14 05:08:23,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:08:23,265 INFO L93 Difference]: Finished difference Result 275 states and 343 transitions. [2024-11-14 05:08:23,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-14 05:08:23,270 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2024-11-14 05:08:23,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:08:23,272 INFO L225 Difference]: With dead ends: 275 [2024-11-14 05:08:23,272 INFO L226 Difference]: Without dead ends: 202 [2024-11-14 05:08:23,272 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-14 05:08:23,273 INFO L432 NwaCegarLoop]: 126 mSDtfsCounter, 78 mSDsluCounter, 229 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 2 mSolverCounterUnsat, 16 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 34.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 355 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 16 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 34.2s IncrementalHoareTripleChecker+Time [2024-11-14 05:08:23,275 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 355 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 113 Invalid, 16 Unknown, 0 Unchecked, 34.2s Time] [2024-11-14 05:08:23,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2024-11-14 05:08:23,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 132. [2024-11-14 05:08:23,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 120 states have (on average 1.2) internal successors, (144), 126 states have internal predecessors, (144), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-14 05:08:23,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 160 transitions. [2024-11-14 05:08:23,296 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 160 transitions. Word has length 13 [2024-11-14 05:08:23,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:08:23,296 INFO L471 AbstractCegarLoop]: Abstraction has 132 states and 160 transitions. [2024-11-14 05:08:23,297 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:08:23,297 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 160 transitions. [2024-11-14 05:08:23,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-11-14 05:08:23,298 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:08:23,298 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:08:23,299 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-14 05:08:23,299 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 05:08:23,299 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:08:23,299 INFO L85 PathProgramCache]: Analyzing trace with hash -608704276, now seen corresponding path program 1 times [2024-11-14 05:08:23,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:08:23,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [527909800] [2024-11-14 05:08:23,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:08:23,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:08:23,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:08:23,754 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:08:23,754 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:08:23,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [527909800] [2024-11-14 05:08:23,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [527909800] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 05:08:23,755 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 05:08:23,755 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-14 05:08:23,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40075991] [2024-11-14 05:08:23,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:08:23,758 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 05:08:23,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:08:23,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 05:08:23,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 05:08:23,760 INFO L87 Difference]: Start difference. First operand 132 states and 160 transitions. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 2 states have internal predecessors, (40), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:08:25,785 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-14 05:08:27,795 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-14 05:08:29,903 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-14 05:08:32,843 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-14 05:08:34,847 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-14 05:08:36,863 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-14 05:08:38,866 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-14 05:08:40,876 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-14 05:08:44,009 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-14 05:08:46,018 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-14 05:08:48,174 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.38s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2024-11-14 05:08:48,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:08:48,176 INFO L93 Difference]: Finished difference Result 324 states and 397 transitions. [2024-11-14 05:08:48,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 05:08:48,182 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 2 states have internal predecessors, (40), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2024-11-14 05:08:48,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:08:48,184 INFO L225 Difference]: With dead ends: 324 [2024-11-14 05:08:48,185 INFO L226 Difference]: Without dead ends: 195 [2024-11-14 05:08:48,185 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 05:08:48,186 INFO L432 NwaCegarLoop]: 161 mSDtfsCounter, 54 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 4 mSolverCounterUnsat, 10 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 284 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 10 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.4s IncrementalHoareTripleChecker+Time [2024-11-14 05:08:48,186 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 284 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 64 Invalid, 10 Unknown, 0 Unchecked, 24.4s Time] [2024-11-14 05:08:48,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2024-11-14 05:08:48,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 179. [2024-11-14 05:08:48,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 167 states have (on average 1.1796407185628743) internal successors, (197), 173 states have internal predecessors, (197), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-14 05:08:48,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 213 transitions. [2024-11-14 05:08:48,212 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 213 transitions. Word has length 41 [2024-11-14 05:08:48,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:08:48,213 INFO L471 AbstractCegarLoop]: Abstraction has 179 states and 213 transitions. [2024-11-14 05:08:48,213 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 2 states have internal predecessors, (40), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:08:48,213 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 213 transitions. [2024-11-14 05:08:48,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-11-14 05:08:48,217 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:08:48,217 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:08:48,217 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-14 05:08:48,217 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 05:08:48,218 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:08:48,218 INFO L85 PathProgramCache]: Analyzing trace with hash -659894475, now seen corresponding path program 1 times [2024-11-14 05:08:48,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:08:48,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1680022475] [2024-11-14 05:08:48,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:08:48,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:08:48,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:08:49,028 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-14 05:08:49,029 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:08:49,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1680022475] [2024-11-14 05:08:49,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1680022475] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 05:08:49,029 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 05:08:49,029 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-14 05:08:49,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355955585] [2024-11-14 05:08:49,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:08:49,030 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-14 05:08:49,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:08:49,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-14 05:08:49,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-14 05:08:49,032 INFO L87 Difference]: Start difference. First operand 179 states and 213 transitions. Second operand has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-14 05:08:51,080 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 [] [2024-11-14 05:08:53,089 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 05:08:55,100 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 05:08:57,103 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 05:08:59,404 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-14 05:09:01,412 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-14 05:09:03,091 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.68s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 05:09:05,098 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-14 05:09:07,102 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-14 05:09:09,113 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 05:09:11,144 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 05:09:12,586 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.44s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 05:09:14,595 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 05:09:16,598 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 05:09:18,804 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 05:09:20,821 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-14 05:09:22,825 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-14 05:09:24,828 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 05:09:26,108 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2024-11-14 05:09:28,042 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.68s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2024-11-14 05:09:28,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:09:28,042 INFO L93 Difference]: Finished difference Result 248 states and 302 transitions. [2024-11-14 05:09:28,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-14 05:09:28,049 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 54 [2024-11-14 05:09:28,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:09:28,052 INFO L225 Difference]: With dead ends: 248 [2024-11-14 05:09:28,052 INFO L226 Difference]: Without dead ends: 229 [2024-11-14 05:09:28,052 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-14 05:09:28,053 INFO L432 NwaCegarLoop]: 123 mSDtfsCounter, 64 mSDsluCounter, 231 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 2 mSolverCounterUnsat, 16 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 38.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 354 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 16 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 39.0s IncrementalHoareTripleChecker+Time [2024-11-14 05:09:28,053 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 354 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 108 Invalid, 16 Unknown, 0 Unchecked, 39.0s Time] [2024-11-14 05:09:28,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2024-11-14 05:09:28,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 181. [2024-11-14 05:09:28,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 169 states have (on average 1.1775147928994083) internal successors, (199), 175 states have internal predecessors, (199), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-14 05:09:28,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 215 transitions. [2024-11-14 05:09:28,074 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 215 transitions. Word has length 54 [2024-11-14 05:09:28,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:09:28,075 INFO L471 AbstractCegarLoop]: Abstraction has 181 states and 215 transitions. [2024-11-14 05:09:28,075 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-14 05:09:28,075 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 215 transitions. [2024-11-14 05:09:28,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-11-14 05:09:28,077 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:09:28,077 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:09:28,077 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-14 05:09:28,077 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 05:09:28,078 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:09:28,078 INFO L85 PathProgramCache]: Analyzing trace with hash -944740721, now seen corresponding path program 1 times [2024-11-14 05:09:28,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:09:28,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [533737382] [2024-11-14 05:09:28,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:09:28,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:09:28,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:09:28,668 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-14 05:09:28,669 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:09:28,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [533737382] [2024-11-14 05:09:28,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [533737382] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 05:09:28,669 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 05:09:28,672 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-14 05:09:28,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125358896] [2024-11-14 05:09:28,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:09:28,673 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-14 05:09:28,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:09:28,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-14 05:09:28,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-14 05:09:28,674 INFO L87 Difference]: Start difference. First operand 181 states and 215 transitions. Second operand has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-14 05:09:30,715 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-14 05:09:32,718 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-14 05:09:34,721 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-14 05:09:36,729 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-14 05:09:38,734 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-14 05:09:40,739 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-14 05:09:42,933 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-14 05:09:44,937 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-14 05:09:46,946 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-14 05:09:48,951 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-14 05:09:50,963 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-14 05:09:52,972 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-14 05:09:55,221 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-14 05:09:57,145 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.92s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-14 05:09:59,156 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-14 05:10:01,160 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-14 05:10:03,183 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-14 05:10:04,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:10:04,800 INFO L93 Difference]: Finished difference Result 506 states and 618 transitions. [2024-11-14 05:10:04,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-14 05:10:04,800 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 63 [2024-11-14 05:10:04,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:10:04,803 INFO L225 Difference]: With dead ends: 506 [2024-11-14 05:10:04,803 INFO L226 Difference]: Without dead ends: 342 [2024-11-14 05:10:04,806 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-11-14 05:10:04,808 INFO L432 NwaCegarLoop]: 147 mSDtfsCounter, 505 mSDsluCounter, 213 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 16 mSolverCounterUnsat, 16 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 35.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 516 SdHoareTripleChecker+Valid, 360 SdHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 16 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 36.1s IncrementalHoareTripleChecker+Time [2024-11-14 05:10:04,808 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [516 Valid, 360 Invalid, 157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 125 Invalid, 16 Unknown, 0 Unchecked, 36.1s Time] [2024-11-14 05:10:04,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 342 states. [2024-11-14 05:10:04,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 342 to 230. [2024-11-14 05:10:04,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 230 states, 218 states have (on average 1.1788990825688073) internal successors, (257), 224 states have internal predecessors, (257), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-14 05:10:04,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 273 transitions. [2024-11-14 05:10:04,829 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 273 transitions. Word has length 63 [2024-11-14 05:10:04,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:10:04,830 INFO L471 AbstractCegarLoop]: Abstraction has 230 states and 273 transitions. [2024-11-14 05:10:04,830 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-14 05:10:04,830 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 273 transitions. [2024-11-14 05:10:04,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-11-14 05:10:04,832 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:10:04,832 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:10:04,832 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-14 05:10:04,833 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 05:10:04,833 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:10:04,833 INFO L85 PathProgramCache]: Analyzing trace with hash 2087817334, now seen corresponding path program 1 times [2024-11-14 05:10:04,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:10:04,833 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399960525] [2024-11-14 05:10:04,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:10:04,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:10:06,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:10:06,624 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-14 05:10:06,624 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:10:06,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1399960525] [2024-11-14 05:10:06,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1399960525] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:10:06,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1857322306] [2024-11-14 05:10:06,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:10:06,624 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:10:06,625 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbdf9a67-d127-4015-b81f-4708210fd446/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:10:06,629 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbdf9a67-d127-4015-b81f-4708210fd446/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:10:06,631 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbdf9a67-d127-4015-b81f-4708210fd446/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-14 05:10:34,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:10:34,140 INFO L255 TraceCheckSpWp]: Trace formula consists of 560 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-14 05:10:34,147 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:10:34,183 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-14 05:10:34,183 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 05:10:34,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1857322306] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 05:10:34,184 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-14 05:10:34,184 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2024-11-14 05:10:34,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702835266] [2024-11-14 05:10:34,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:10:34,184 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-14 05:10:34,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:10:34,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-14 05:10:34,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-14 05:10:34,185 INFO L87 Difference]: Start difference. First operand 230 states and 273 transitions. Second operand has 4 states, 3 states have (on average 22.333333333333332) internal successors, (67), 4 states have internal predecessors, (67), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-14 05:10:36,226 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-14 05:10:38,231 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-14 05:10:40,239 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-14 05:10:42,252 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-14 05:10:44,255 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-14 05:10:46,259 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-14 05:10:48,429 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-14 05:10:50,432 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-14 05:10:52,437 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-14 05:10:54,718 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2024-11-14 05:10:54,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:10:54,791 INFO L93 Difference]: Finished difference Result 442 states and 529 transitions. [2024-11-14 05:10:54,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-14 05:10:54,797 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 22.333333333333332) internal successors, (67), 4 states have internal predecessors, (67), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 71 [2024-11-14 05:10:54,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:10:54,799 INFO L225 Difference]: With dead ends: 442 [2024-11-14 05:10:54,799 INFO L226 Difference]: Without dead ends: 232 [2024-11-14 05:10:54,800 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-14 05:10:54,801 INFO L432 NwaCegarLoop]: 131 mSDtfsCounter, 0 mSDsluCounter, 258 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 1 mSolverCounterUnsat, 9 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 389 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 9 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.6s IncrementalHoareTripleChecker+Time [2024-11-14 05:10:54,802 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 389 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 75 Invalid, 9 Unknown, 0 Unchecked, 20.6s Time] [2024-11-14 05:10:54,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2024-11-14 05:10:54,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 232. [2024-11-14 05:10:54,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232 states, 219 states have (on average 1.182648401826484) internal successors, (259), 226 states have internal predecessors, (259), 8 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (9), 4 states have call predecessors, (9), 8 states have call successors, (9) [2024-11-14 05:10:54,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 276 transitions. [2024-11-14 05:10:54,825 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 276 transitions. Word has length 71 [2024-11-14 05:10:54,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:10:54,825 INFO L471 AbstractCegarLoop]: Abstraction has 232 states and 276 transitions. [2024-11-14 05:10:54,826 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 22.333333333333332) internal successors, (67), 4 states have internal predecessors, (67), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-14 05:10:54,826 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 276 transitions. [2024-11-14 05:10:54,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-11-14 05:10:54,828 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:10:54,828 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:10:54,889 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbdf9a67-d127-4015-b81f-4708210fd446/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-14 05:10:55,029 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbdf9a67-d127-4015-b81f-4708210fd446/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-14 05:10:55,029 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 05:10:55,029 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:10:55,030 INFO L85 PathProgramCache]: Analyzing trace with hash -1054859960, now seen corresponding path program 1 times [2024-11-14 05:10:55,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:10:55,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743974276] [2024-11-14 05:10:55,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:10:55,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:10:56,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:10:56,864 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-14 05:10:56,864 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:10:56,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1743974276] [2024-11-14 05:10:56,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1743974276] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:10:56,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [782919653] [2024-11-14 05:10:56,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:10:56,868 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:10:56,869 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbdf9a67-d127-4015-b81f-4708210fd446/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:10:56,871 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbdf9a67-d127-4015-b81f-4708210fd446/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:10:56,874 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbdf9a67-d127-4015-b81f-4708210fd446/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-14 05:11:28,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:11:28,635 INFO L255 TraceCheckSpWp]: Trace formula consists of 590 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-14 05:11:28,640 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:11:28,711 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-14 05:11:28,711 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:11:28,884 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-14 05:11:28,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [782919653] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:11:28,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [987956617] [2024-11-14 05:11:28,929 INFO L159 IcfgInterpreter]: Started Sifa with 67 locations of interest [2024-11-14 05:11:28,929 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 05:11:28,934 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 05:11:28,942 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 05:11:28,943 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 05:12:20,523 INFO L197 IcfgInterpreter]: Interpreting procedure #Ultimate.C_memset with input of size 396 for LOIs [2024-11-14 05:12:25,808 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 05:20:39,289 WARN L286 SmtUtils]: Spent 7.33m on a formula simplification. DAG size of input: 396 DAG size of output: 396 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)