./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/Problem05_label48+token_ring.03.cil-2.c --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_bbb1a979-9020-49e0-80d1-d5c287a4188a/bin/utaipan-verify-sOmjnqqW8E/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbb1a979-9020-49e0-80d1-d5c287a4188a/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_bbb1a979-9020-49e0-80d1-d5c287a4188a/bin/utaipan-verify-sOmjnqqW8E/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbb1a979-9020-49e0-80d1-d5c287a4188a/bin/utaipan-verify-sOmjnqqW8E/config/TaipanReach.xml -i ../../sv-benchmarks/c/combinations/Problem05_label48+token_ring.03.cil-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbb1a979-9020-49e0-80d1-d5c287a4188a/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_bbb1a979-9020-49e0-80d1-d5c287a4188a/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 3cb4677417bffcd5881eb90c9776ad9c1dd0362c552c5face38646e7c65c86d6 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-13 23:27:36,479 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-13 23:27:36,543 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbb1a979-9020-49e0-80d1-d5c287a4188a/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-Reach-32bit-Taipan_Default.epf [2024-11-13 23:27:36,550 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-13 23:27:36,550 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-13 23:27:36,595 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-13 23:27:36,595 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-13 23:27:36,595 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-13 23:27:36,596 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-13 23:27:36,596 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-13 23:27:36,596 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-13 23:27:36,596 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-13 23:27:36,596 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-13 23:27:36,600 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-13 23:27:36,601 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-13 23:27:36,601 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-13 23:27:36,601 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-13 23:27:36,601 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-13 23:27:36,601 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-13 23:27:36,601 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-13 23:27:36,601 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-13 23:27:36,601 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-13 23:27:36,602 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-13 23:27:36,602 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-13 23:27:36,602 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-13 23:27:36,602 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-13 23:27:36,602 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-13 23:27:36,602 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-13 23:27:36,603 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-13 23:27:36,603 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-13 23:27:36,603 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-13 23:27:36,603 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-13 23:27:36,603 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-13 23:27:36,603 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-13 23:27:36,603 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-13 23:27:36,603 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-13 23:27:36,603 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-13 23:27:36,604 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-13 23:27:36,604 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-13 23:27:36,604 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-13 23:27:36,604 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-13 23:27:36,604 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-13 23:27:36,604 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-13 23:27:36,606 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-13 23:27:36,607 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-13 23:27:36,607 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-13 23:27:36,607 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-13 23:27:36,607 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_bbb1a979-9020-49e0-80d1-d5c287a4188a/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 -> 3cb4677417bffcd5881eb90c9776ad9c1dd0362c552c5face38646e7c65c86d6 [2024-11-13 23:27:36,944 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-13 23:27:36,956 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-13 23:27:36,959 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-13 23:27:36,961 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-13 23:27:36,961 INFO L274 PluginConnector]: CDTParser initialized [2024-11-13 23:27:36,962 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbb1a979-9020-49e0-80d1-d5c287a4188a/bin/utaipan-verify-sOmjnqqW8E/../../sv-benchmarks/c/combinations/Problem05_label48+token_ring.03.cil-2.c Unable to find full path for "g++" [2024-11-13 23:27:38,779 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-13 23:27:39,561 INFO L384 CDTParser]: Found 1 translation units. [2024-11-13 23:27:39,562 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbb1a979-9020-49e0-80d1-d5c287a4188a/sv-benchmarks/c/combinations/Problem05_label48+token_ring.03.cil-2.c [2024-11-13 23:27:39,618 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbb1a979-9020-49e0-80d1-d5c287a4188a/bin/utaipan-verify-sOmjnqqW8E/data/cf0db6740/f90be52b0875491382efe70c81359f8c/FLAG599b15137 [2024-11-13 23:27:39,856 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbb1a979-9020-49e0-80d1-d5c287a4188a/bin/utaipan-verify-sOmjnqqW8E/data/cf0db6740/f90be52b0875491382efe70c81359f8c [2024-11-13 23:27:39,858 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-13 23:27:39,859 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-13 23:27:39,860 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-13 23:27:39,860 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-13 23:27:39,863 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-13 23:27:39,864 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 11:27:39" (1/1) ... [2024-11-13 23:27:39,865 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2543c43e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:27:39, skipping insertion in model container [2024-11-13 23:27:39,865 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 11:27:39" (1/1) ... [2024-11-13 23:27:40,056 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-13 23:27:41,896 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_bbb1a979-9020-49e0-80d1-d5c287a4188a/sv-benchmarks/c/combinations/Problem05_label48+token_ring.03.cil-2.c[375709,375722] [2024-11-13 23:27:41,955 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_bbb1a979-9020-49e0-80d1-d5c287a4188a/sv-benchmarks/c/combinations/Problem05_label48+token_ring.03.cil-2.c[383339,383352] [2024-11-13 23:27:42,141 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 23:27:42,151 INFO L200 MainTranslator]: Completed pre-run [2024-11-13 23:27:43,262 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_bbb1a979-9020-49e0-80d1-d5c287a4188a/sv-benchmarks/c/combinations/Problem05_label48+token_ring.03.cil-2.c[375709,375722] [2024-11-13 23:27:43,272 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_bbb1a979-9020-49e0-80d1-d5c287a4188a/sv-benchmarks/c/combinations/Problem05_label48+token_ring.03.cil-2.c[383339,383352] [2024-11-13 23:27:43,283 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 23:27:43,402 INFO L204 MainTranslator]: Completed translation [2024-11-13 23:27:43,403 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:27:43 WrapperNode [2024-11-13 23:27:43,403 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-13 23:27:43,404 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-13 23:27:43,404 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-13 23:27:43,404 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-13 23:27:43,410 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:27:43" (1/1) ... [2024-11-13 23:27:43,502 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:27:43" (1/1) ... [2024-11-13 23:27:44,126 INFO L138 Inliner]: procedures = 50, calls = 50, calls flagged for inlining = 28, calls inlined = 28, statements flattened = 12686 [2024-11-13 23:27:44,127 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-13 23:27:44,127 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-13 23:27:44,128 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-13 23:27:44,128 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-13 23:27:44,144 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:27:43" (1/1) ... [2024-11-13 23:27:44,144 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:27:43" (1/1) ... [2024-11-13 23:27:44,211 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:27:43" (1/1) ... [2024-11-13 23:27:44,212 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:27:43" (1/1) ... [2024-11-13 23:27:44,448 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:27:43" (1/1) ... [2024-11-13 23:27:44,537 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:27:43" (1/1) ... [2024-11-13 23:27:44,558 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:27:43" (1/1) ... [2024-11-13 23:27:44,575 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:27:43" (1/1) ... [2024-11-13 23:27:44,627 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-13 23:27:44,627 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-13 23:27:44,628 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-13 23:27:44,628 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-13 23:27:44,629 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:27:43" (1/1) ... [2024-11-13 23:27:44,634 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-13 23:27:44,648 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbb1a979-9020-49e0-80d1-d5c287a4188a/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-13 23:27:44,662 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbb1a979-9020-49e0-80d1-d5c287a4188a/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-13 23:27:44,667 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbb1a979-9020-49e0-80d1-d5c287a4188a/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-13 23:27:44,695 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-13 23:27:44,695 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2024-11-13 23:27:44,696 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2024-11-13 23:27:44,696 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2024-11-13 23:27:44,696 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2024-11-13 23:27:44,696 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2024-11-13 23:27:44,696 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2024-11-13 23:27:44,696 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2024-11-13 23:27:44,696 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2024-11-13 23:27:44,696 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2024-11-13 23:27:44,696 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2024-11-13 23:27:44,697 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2024-11-13 23:27:44,697 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2024-11-13 23:27:44,697 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-13 23:27:44,697 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-13 23:27:44,698 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-13 23:27:44,847 INFO L238 CfgBuilder]: Building ICFG [2024-11-13 23:27:44,849 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-13 23:27:55,525 INFO L? ?]: Removed 1701 outVars from TransFormulas that were not future-live. [2024-11-13 23:27:55,525 INFO L287 CfgBuilder]: Performing block encoding [2024-11-13 23:27:57,803 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-13 23:27:57,804 INFO L316 CfgBuilder]: Removed 7 assume(true) statements. [2024-11-13 23:27:57,804 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 11:27:57 BoogieIcfgContainer [2024-11-13 23:27:57,804 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-13 23:27:57,807 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-13 23:27:57,807 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-13 23:27:57,812 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-13 23:27:57,812 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 11:27:39" (1/3) ... [2024-11-13 23:27:57,812 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52dc2352 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 11:27:57, skipping insertion in model container [2024-11-13 23:27:57,813 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:27:43" (2/3) ... [2024-11-13 23:27:57,813 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52dc2352 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 11:27:57, skipping insertion in model container [2024-11-13 23:27:57,813 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 11:27:57" (3/3) ... [2024-11-13 23:27:57,814 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem05_label48+token_ring.03.cil-2.c [2024-11-13 23:27:57,830 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-13 23:27:57,832 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG Problem05_label48+token_ring.03.cil-2.c that has 7 procedures, 1736 locations, 1 initial locations, 7 loop locations, and 2 error locations. [2024-11-13 23:27:57,960 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-13 23:27:57,976 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;@6d8fbc1a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-13 23:27:57,977 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-13 23:27:57,990 INFO L276 IsEmpty]: Start isEmpty. Operand has 1736 states, 1710 states have (on average 1.972514619883041) internal successors, (3373), 1713 states have internal predecessors, (3373), 17 states have call successors, (17), 6 states have call predecessors, (17), 6 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2024-11-13 23:27:58,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-11-13 23:27:58,001 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 23:27:58,002 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 23:27:58,003 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 23:27:58,009 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 23:27:58,010 INFO L85 PathProgramCache]: Analyzing trace with hash -421786957, now seen corresponding path program 1 times [2024-11-13 23:27:58,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-13 23:27:58,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585330529] [2024-11-13 23:27:58,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:27:58,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 23:27:58,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:27:58,505 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 23:27:58,506 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-13 23:27:58,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1585330529] [2024-11-13 23:27:58,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1585330529] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 23:27:58,509 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 23:27:58,509 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 23:27:58,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480351108] [2024-11-13 23:27:58,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 23:27:58,517 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 23:27:58,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-13 23:27:58,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 23:27:58,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 23:27:58,546 INFO L87 Difference]: Start difference. First operand has 1736 states, 1710 states have (on average 1.972514619883041) internal successors, (3373), 1713 states have internal predecessors, (3373), 17 states have call successors, (17), 6 states have call predecessors, (17), 6 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) Second operand has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-13 23:27:59,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 23:27:59,653 INFO L93 Difference]: Finished difference Result 3548 states and 6935 transitions. [2024-11-13 23:27:59,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 23:27:59,656 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 40 [2024-11-13 23:27:59,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 23:27:59,679 INFO L225 Difference]: With dead ends: 3548 [2024-11-13 23:27:59,679 INFO L226 Difference]: Without dead ends: 1811 [2024-11-13 23:27:59,687 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 23:27:59,690 INFO L432 NwaCegarLoop]: 3249 mSDtfsCounter, 3490 mSDsluCounter, 3187 mSDsCounter, 0 mSdLazyCounter, 582 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3490 SdHoareTripleChecker+Valid, 6436 SdHoareTripleChecker+Invalid, 596 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 582 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-13 23:27:59,690 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3490 Valid, 6436 Invalid, 596 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 582 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-13 23:27:59,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1811 states. [2024-11-13 23:27:59,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1811 to 1810. [2024-11-13 23:27:59,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1810 states, 1766 states have (on average 1.9479048697621744) internal successors, (3440), 1769 states have internal predecessors, (3440), 30 states have call successors, (30), 12 states have call predecessors, (30), 12 states have return successors, (30), 29 states have call predecessors, (30), 30 states have call successors, (30) [2024-11-13 23:27:59,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1810 states to 1810 states and 3500 transitions. [2024-11-13 23:27:59,859 INFO L78 Accepts]: Start accepts. Automaton has 1810 states and 3500 transitions. Word has length 40 [2024-11-13 23:27:59,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 23:27:59,860 INFO L471 AbstractCegarLoop]: Abstraction has 1810 states and 3500 transitions. [2024-11-13 23:27:59,860 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-13 23:27:59,860 INFO L276 IsEmpty]: Start isEmpty. Operand 1810 states and 3500 transitions. [2024-11-13 23:27:59,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-11-13 23:27:59,864 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 23:27:59,864 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 23:27:59,864 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-13 23:27:59,864 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 23:27:59,865 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 23:27:59,865 INFO L85 PathProgramCache]: Analyzing trace with hash 1600515671, now seen corresponding path program 1 times [2024-11-13 23:27:59,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-13 23:27:59,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1986246141] [2024-11-13 23:27:59,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:27:59,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 23:27:59,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:28:00,175 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-13 23:28:00,176 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-13 23:28:00,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1986246141] [2024-11-13 23:28:00,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1986246141] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 23:28:00,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1500673379] [2024-11-13 23:28:00,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:28:00,177 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 23:28:00,177 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbb1a979-9020-49e0-80d1-d5c287a4188a/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-13 23:28:00,179 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbb1a979-9020-49e0-80d1-d5c287a4188a/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 23:28:00,182 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbb1a979-9020-49e0-80d1-d5c287a4188a/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-13 23:28:00,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:28:00,323 INFO L255 TraceCheckSpWp]: Trace formula consists of 378 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-13 23:28:00,331 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 23:28:00,404 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-13 23:28:00,406 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 23:28:00,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1500673379] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 23:28:00,407 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 23:28:00,407 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2024-11-13 23:28:00,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143855921] [2024-11-13 23:28:00,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 23:28:00,410 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 23:28:00,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-13 23:28:00,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 23:28:00,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-13 23:28:00,412 INFO L87 Difference]: Start difference. First operand 1810 states and 3500 transitions. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 2 states have internal predecessors, (50), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-13 23:28:00,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 23:28:00,979 INFO L93 Difference]: Finished difference Result 2131 states and 3949 transitions. [2024-11-13 23:28:00,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 23:28:00,980 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 2 states have internal predecessors, (50), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 74 [2024-11-13 23:28:00,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 23:28:00,992 INFO L225 Difference]: With dead ends: 2131 [2024-11-13 23:28:00,992 INFO L226 Difference]: Without dead ends: 1967 [2024-11-13 23:28:00,994 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-13 23:28:00,995 INFO L432 NwaCegarLoop]: 3193 mSDtfsCounter, 3367 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 262 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3367 SdHoareTripleChecker+Valid, 3287 SdHoareTripleChecker+Invalid, 264 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-13 23:28:00,995 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3367 Valid, 3287 Invalid, 264 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 262 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-13 23:28:00,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1967 states. [2024-11-13 23:28:01,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1967 to 1963. [2024-11-13 23:28:01,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1963 states, 1883 states have (on average 1.910249601699416) internal successors, (3597), 1887 states have internal predecessors, (3597), 54 states have call successors, (54), 24 states have call predecessors, (54), 24 states have return successors, (54), 52 states have call predecessors, (54), 54 states have call successors, (54) [2024-11-13 23:28:01,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1963 states to 1963 states and 3705 transitions. [2024-11-13 23:28:01,080 INFO L78 Accepts]: Start accepts. Automaton has 1963 states and 3705 transitions. Word has length 74 [2024-11-13 23:28:01,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 23:28:01,080 INFO L471 AbstractCegarLoop]: Abstraction has 1963 states and 3705 transitions. [2024-11-13 23:28:01,080 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 2 states have internal predecessors, (50), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-13 23:28:01,080 INFO L276 IsEmpty]: Start isEmpty. Operand 1963 states and 3705 transitions. [2024-11-13 23:28:01,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-11-13 23:28:01,085 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 23:28:01,085 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 23:28:01,106 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbb1a979-9020-49e0-80d1-d5c287a4188a/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-13 23:28:01,285 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbb1a979-9020-49e0-80d1-d5c287a4188a/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2024-11-13 23:28:01,287 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 23:28:01,288 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 23:28:01,288 INFO L85 PathProgramCache]: Analyzing trace with hash 112921941, now seen corresponding path program 1 times [2024-11-13 23:28:01,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-13 23:28:01,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1777812191] [2024-11-13 23:28:01,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:28:01,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 23:28:01,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:28:01,504 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-13 23:28:01,504 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-13 23:28:01,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1777812191] [2024-11-13 23:28:01,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1777812191] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 23:28:01,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1000418409] [2024-11-13 23:28:01,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:28:01,506 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 23:28:01,506 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbb1a979-9020-49e0-80d1-d5c287a4188a/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-13 23:28:01,508 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbb1a979-9020-49e0-80d1-d5c287a4188a/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 23:28:01,510 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbb1a979-9020-49e0-80d1-d5c287a4188a/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-13 23:28:01,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:28:01,640 INFO L255 TraceCheckSpWp]: Trace formula consists of 372 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-13 23:28:01,643 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 23:28:01,688 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-13 23:28:01,688 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 23:28:01,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1000418409] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 23:28:01,688 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 23:28:01,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2024-11-13 23:28:01,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108451116] [2024-11-13 23:28:01,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 23:28:01,689 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 23:28:01,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-13 23:28:01,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 23:28:01,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-13 23:28:01,690 INFO L87 Difference]: Start difference. First operand 1963 states and 3705 transitions. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 2 states have internal predecessors, (47), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-13 23:28:02,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 23:28:02,220 INFO L93 Difference]: Finished difference Result 2584 states and 4564 transitions. [2024-11-13 23:28:02,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 23:28:02,220 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 2 states have internal predecessors, (47), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 74 [2024-11-13 23:28:02,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 23:28:02,231 INFO L225 Difference]: With dead ends: 2584 [2024-11-13 23:28:02,232 INFO L226 Difference]: Without dead ends: 2267 [2024-11-13 23:28:02,233 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-13 23:28:02,234 INFO L432 NwaCegarLoop]: 3191 mSDtfsCounter, 3370 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 262 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3370 SdHoareTripleChecker+Valid, 3285 SdHoareTripleChecker+Invalid, 264 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-13 23:28:02,234 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3370 Valid, 3285 Invalid, 264 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 262 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-13 23:28:02,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2267 states. [2024-11-13 23:28:02,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2267 to 2261. [2024-11-13 23:28:02,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2261 states, 2111 states have (on average 1.8469919469445761) internal successors, (3899), 2117 states have internal predecessors, (3899), 100 states have call successors, (100), 48 states have call predecessors, (100), 48 states have return successors, (100), 96 states have call predecessors, (100), 100 states have call successors, (100) [2024-11-13 23:28:02,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2261 states to 2261 states and 4099 transitions. [2024-11-13 23:28:02,317 INFO L78 Accepts]: Start accepts. Automaton has 2261 states and 4099 transitions. Word has length 74 [2024-11-13 23:28:02,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 23:28:02,317 INFO L471 AbstractCegarLoop]: Abstraction has 2261 states and 4099 transitions. [2024-11-13 23:28:02,317 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 2 states have internal predecessors, (47), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-13 23:28:02,317 INFO L276 IsEmpty]: Start isEmpty. Operand 2261 states and 4099 transitions. [2024-11-13 23:28:02,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-11-13 23:28:02,320 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 23:28:02,320 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 23:28:02,339 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbb1a979-9020-49e0-80d1-d5c287a4188a/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-13 23:28:02,520 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbb1a979-9020-49e0-80d1-d5c287a4188a/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 23:28:02,521 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 23:28:02,521 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 23:28:02,522 INFO L85 PathProgramCache]: Analyzing trace with hash -1319328361, now seen corresponding path program 1 times [2024-11-13 23:28:02,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-13 23:28:02,522 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546172613] [2024-11-13 23:28:02,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:28:02,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 23:28:02,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:28:02,903 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-13 23:28:02,903 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-13 23:28:02,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1546172613] [2024-11-13 23:28:02,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1546172613] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 23:28:02,905 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 23:28:02,906 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-13 23:28:02,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596355663] [2024-11-13 23:28:02,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 23:28:02,906 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 23:28:02,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-13 23:28:02,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 23:28:02,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-13 23:28:02,907 INFO L87 Difference]: Start difference. First operand 2261 states and 4099 transitions. Second operand has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 4 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2024-11-13 23:28:04,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 23:28:04,185 INFO L93 Difference]: Finished difference Result 3537 states and 5805 transitions. [2024-11-13 23:28:04,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-13 23:28:04,186 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 4 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 74 [2024-11-13 23:28:04,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 23:28:04,206 INFO L225 Difference]: With dead ends: 3537 [2024-11-13 23:28:04,206 INFO L226 Difference]: Without dead ends: 2923 [2024-11-13 23:28:04,212 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2024-11-13 23:28:04,213 INFO L432 NwaCegarLoop]: 3174 mSDtfsCounter, 3557 mSDsluCounter, 9398 mSDsCounter, 0 mSdLazyCounter, 1053 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3569 SdHoareTripleChecker+Valid, 12572 SdHoareTripleChecker+Invalid, 1122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 1053 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-13 23:28:04,215 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3569 Valid, 12572 Invalid, 1122 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [69 Valid, 1053 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-13 23:28:04,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2923 states. [2024-11-13 23:28:04,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2923 to 2825. [2024-11-13 23:28:04,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2825 states, 2539 states have (on average 1.7546278062229224) internal successors, (4455), 2549 states have internal predecessors, (4455), 188 states have call successors, (188), 96 states have call predecessors, (188), 96 states have return successors, (188), 180 states have call predecessors, (188), 188 states have call successors, (188) [2024-11-13 23:28:04,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2825 states to 2825 states and 4831 transitions. [2024-11-13 23:28:04,485 INFO L78 Accepts]: Start accepts. Automaton has 2825 states and 4831 transitions. Word has length 74 [2024-11-13 23:28:04,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 23:28:04,486 INFO L471 AbstractCegarLoop]: Abstraction has 2825 states and 4831 transitions. [2024-11-13 23:28:04,487 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 4 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2024-11-13 23:28:04,487 INFO L276 IsEmpty]: Start isEmpty. Operand 2825 states and 4831 transitions. [2024-11-13 23:28:04,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2024-11-13 23:28:04,495 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 23:28:04,496 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 23:28:04,496 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-13 23:28:04,496 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 23:28:04,496 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 23:28:04,496 INFO L85 PathProgramCache]: Analyzing trace with hash 1704730778, now seen corresponding path program 1 times [2024-11-13 23:28:04,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-13 23:28:04,497 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2071620500] [2024-11-13 23:28:04,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:28:04,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 23:28:04,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:28:04,775 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 10 proven. 14 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-13 23:28:04,775 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-13 23:28:04,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2071620500] [2024-11-13 23:28:04,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2071620500] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 23:28:04,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1174310798] [2024-11-13 23:28:04,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:28:04,775 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 23:28:04,775 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbb1a979-9020-49e0-80d1-d5c287a4188a/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-13 23:28:04,779 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbb1a979-9020-49e0-80d1-d5c287a4188a/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 23:28:04,781 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbb1a979-9020-49e0-80d1-d5c287a4188a/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-13 23:28:04,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:28:04,913 INFO L255 TraceCheckSpWp]: Trace formula consists of 395 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-13 23:28:04,916 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 23:28:04,951 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-13 23:28:04,951 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 23:28:04,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1174310798] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 23:28:04,951 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 23:28:04,951 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-11-13 23:28:04,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827256071] [2024-11-13 23:28:04,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 23:28:04,952 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 23:28:04,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-13 23:28:04,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 23:28:04,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-13 23:28:04,953 INFO L87 Difference]: Start difference. First operand 2825 states and 4831 transitions. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-13 23:28:05,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 23:28:05,620 INFO L93 Difference]: Finished difference Result 3750 states and 6074 transitions. [2024-11-13 23:28:05,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 23:28:05,621 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 88 [2024-11-13 23:28:05,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 23:28:05,637 INFO L225 Difference]: With dead ends: 3750 [2024-11-13 23:28:05,637 INFO L226 Difference]: Without dead ends: 3140 [2024-11-13 23:28:05,640 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-13 23:28:05,641 INFO L432 NwaCegarLoop]: 3211 mSDtfsCounter, 47 mSDsluCounter, 3161 mSDsCounter, 0 mSdLazyCounter, 480 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 6372 SdHoareTripleChecker+Invalid, 480 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 480 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-13 23:28:05,642 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 6372 Invalid, 480 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 480 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-13 23:28:05,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3140 states. [2024-11-13 23:28:05,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3140 to 3009. [2024-11-13 23:28:05,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3009 states, 2707 states have (on average 1.7373476172885112) internal successors, (4703), 2717 states have internal predecessors, (4703), 196 states have call successors, (196), 104 states have call predecessors, (196), 104 states have return successors, (196), 188 states have call predecessors, (196), 196 states have call successors, (196) [2024-11-13 23:28:05,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3009 states to 3009 states and 5095 transitions. [2024-11-13 23:28:05,776 INFO L78 Accepts]: Start accepts. Automaton has 3009 states and 5095 transitions. Word has length 88 [2024-11-13 23:28:05,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 23:28:05,777 INFO L471 AbstractCegarLoop]: Abstraction has 3009 states and 5095 transitions. [2024-11-13 23:28:05,777 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-13 23:28:05,777 INFO L276 IsEmpty]: Start isEmpty. Operand 3009 states and 5095 transitions. [2024-11-13 23:28:05,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2024-11-13 23:28:05,782 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 23:28:05,782 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 23:28:05,802 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbb1a979-9020-49e0-80d1-d5c287a4188a/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-13 23:28:05,982 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbb1a979-9020-49e0-80d1-d5c287a4188a/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 23:28:05,983 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 23:28:05,983 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 23:28:05,984 INFO L85 PathProgramCache]: Analyzing trace with hash -61575599, now seen corresponding path program 1 times [2024-11-13 23:28:05,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-13 23:28:05,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [347856283] [2024-11-13 23:28:05,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:28:05,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 23:28:06,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:28:06,058 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-11-13 23:28:06,059 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-13 23:28:06,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [347856283] [2024-11-13 23:28:06,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [347856283] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 23:28:06,059 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 23:28:06,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 23:28:06,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913504697] [2024-11-13 23:28:06,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 23:28:06,060 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 23:28:06,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-13 23:28:06,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 23:28:06,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 23:28:06,060 INFO L87 Difference]: Start difference. First operand 3009 states and 5095 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 3 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2024-11-13 23:28:06,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 23:28:06,622 INFO L93 Difference]: Finished difference Result 5050 states and 7848 transitions. [2024-11-13 23:28:06,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 23:28:06,623 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 3 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 98 [2024-11-13 23:28:06,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 23:28:06,642 INFO L225 Difference]: With dead ends: 5050 [2024-11-13 23:28:06,642 INFO L226 Difference]: Without dead ends: 3687 [2024-11-13 23:28:06,647 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 23:28:06,648 INFO L432 NwaCegarLoop]: 3191 mSDtfsCounter, 3362 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 260 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3362 SdHoareTripleChecker+Valid, 3285 SdHoareTripleChecker+Invalid, 262 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-13 23:28:06,650 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3362 Valid, 3285 Invalid, 262 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 260 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-13 23:28:06,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3687 states. [2024-11-13 23:28:06,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3687 to 3673. [2024-11-13 23:28:06,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3673 states, 3227 states have (on average 1.666873256894949) internal successors, (5379), 3241 states have internal predecessors, (5379), 288 states have call successors, (288), 156 states have call predecessors, (288), 156 states have return successors, (288), 276 states have call predecessors, (288), 288 states have call successors, (288) [2024-11-13 23:28:06,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3673 states to 3673 states and 5955 transitions. [2024-11-13 23:28:06,830 INFO L78 Accepts]: Start accepts. Automaton has 3673 states and 5955 transitions. Word has length 98 [2024-11-13 23:28:06,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 23:28:06,830 INFO L471 AbstractCegarLoop]: Abstraction has 3673 states and 5955 transitions. [2024-11-13 23:28:06,831 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 3 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2024-11-13 23:28:06,831 INFO L276 IsEmpty]: Start isEmpty. Operand 3673 states and 5955 transitions. [2024-11-13 23:28:06,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2024-11-13 23:28:06,842 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 23:28:06,843 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 23:28:06,843 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-13 23:28:06,843 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 23:28:06,843 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 23:28:06,843 INFO L85 PathProgramCache]: Analyzing trace with hash 1867184788, now seen corresponding path program 1 times [2024-11-13 23:28:06,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-13 23:28:06,844 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1000065265] [2024-11-13 23:28:06,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:28:06,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 23:28:06,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:28:06,978 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 23 proven. 1 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2024-11-13 23:28:06,979 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-13 23:28:06,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1000065265] [2024-11-13 23:28:06,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1000065265] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 23:28:06,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1306894358] [2024-11-13 23:28:06,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:28:06,980 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 23:28:06,981 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbb1a979-9020-49e0-80d1-d5c287a4188a/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-13 23:28:06,983 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbb1a979-9020-49e0-80d1-d5c287a4188a/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 23:28:06,986 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbb1a979-9020-49e0-80d1-d5c287a4188a/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-13 23:28:07,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:28:07,123 INFO L255 TraceCheckSpWp]: Trace formula consists of 480 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-13 23:28:07,125 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 23:28:07,165 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-13 23:28:07,166 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 23:28:07,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1306894358] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 23:28:07,167 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 23:28:07,167 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2024-11-13 23:28:07,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871944180] [2024-11-13 23:28:07,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 23:28:07,168 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 23:28:07,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-13 23:28:07,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 23:28:07,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-13 23:28:07,170 INFO L87 Difference]: Start difference. First operand 3673 states and 5955 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2024-11-13 23:28:07,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 23:28:07,932 INFO L93 Difference]: Finished difference Result 5469 states and 8385 transitions. [2024-11-13 23:28:07,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 23:28:07,933 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 112 [2024-11-13 23:28:07,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 23:28:07,953 INFO L225 Difference]: With dead ends: 5469 [2024-11-13 23:28:07,953 INFO L226 Difference]: Without dead ends: 4107 [2024-11-13 23:28:07,957 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-13 23:28:07,958 INFO L432 NwaCegarLoop]: 3208 mSDtfsCounter, 56 mSDsluCounter, 3162 mSDsCounter, 0 mSdLazyCounter, 479 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 6370 SdHoareTripleChecker+Invalid, 479 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 479 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-13 23:28:07,959 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 6370 Invalid, 479 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 479 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-13 23:28:07,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4107 states. [2024-11-13 23:28:08,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4107 to 3917. [2024-11-13 23:28:08,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3917 states, 3447 states have (on average 1.656803017116333) internal successors, (5711), 3461 states have internal predecessors, (5711), 300 states have call successors, (300), 168 states have call predecessors, (300), 168 states have return successors, (300), 288 states have call predecessors, (300), 300 states have call successors, (300) [2024-11-13 23:28:08,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3917 states to 3917 states and 6311 transitions. [2024-11-13 23:28:08,136 INFO L78 Accepts]: Start accepts. Automaton has 3917 states and 6311 transitions. Word has length 112 [2024-11-13 23:28:08,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 23:28:08,136 INFO L471 AbstractCegarLoop]: Abstraction has 3917 states and 6311 transitions. [2024-11-13 23:28:08,137 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2024-11-13 23:28:08,137 INFO L276 IsEmpty]: Start isEmpty. Operand 3917 states and 6311 transitions. [2024-11-13 23:28:08,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2024-11-13 23:28:08,144 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 23:28:08,146 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 23:28:08,166 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbb1a979-9020-49e0-80d1-d5c287a4188a/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-13 23:28:08,350 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbb1a979-9020-49e0-80d1-d5c287a4188a/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 23:28:08,351 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 23:28:08,351 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 23:28:08,351 INFO L85 PathProgramCache]: Analyzing trace with hash 1696845908, now seen corresponding path program 2 times [2024-11-13 23:28:08,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-13 23:28:08,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [247576404] [2024-11-13 23:28:08,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:28:08,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 23:28:08,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:28:08,571 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 10 proven. 27 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-13 23:28:08,571 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-13 23:28:08,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [247576404] [2024-11-13 23:28:08,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [247576404] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 23:28:08,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [860541042] [2024-11-13 23:28:08,571 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-13 23:28:08,571 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 23:28:08,572 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbb1a979-9020-49e0-80d1-d5c287a4188a/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-13 23:28:08,574 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbb1a979-9020-49e0-80d1-d5c287a4188a/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 23:28:08,576 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbb1a979-9020-49e0-80d1-d5c287a4188a/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-13 23:28:08,687 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-13 23:28:08,687 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 23:28:08,689 INFO L255 TraceCheckSpWp]: Trace formula consists of 321 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-13 23:28:08,692 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 23:28:08,714 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-13 23:28:08,714 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 23:28:08,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [860541042] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 23:28:08,715 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 23:28:08,715 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-11-13 23:28:08,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677022820] [2024-11-13 23:28:08,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 23:28:08,715 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 23:28:08,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-13 23:28:08,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 23:28:08,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-13 23:28:08,716 INFO L87 Difference]: Start difference. First operand 3917 states and 6311 transitions. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 3 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-13 23:28:09,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 23:28:09,377 INFO L93 Difference]: Finished difference Result 5533 states and 8581 transitions. [2024-11-13 23:28:09,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 23:28:09,378 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 3 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) Word has length 112 [2024-11-13 23:28:09,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 23:28:09,399 INFO L225 Difference]: With dead ends: 5533 [2024-11-13 23:28:09,399 INFO L226 Difference]: Without dead ends: 3927 [2024-11-13 23:28:09,405 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-13 23:28:09,406 INFO L432 NwaCegarLoop]: 3216 mSDtfsCounter, 106 mSDsluCounter, 3151 mSDsCounter, 0 mSdLazyCounter, 482 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 6367 SdHoareTripleChecker+Invalid, 485 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 482 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-13 23:28:09,407 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 6367 Invalid, 485 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 482 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-13 23:28:09,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3927 states. [2024-11-13 23:28:09,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3927 to 3909. [2024-11-13 23:28:09,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3909 states, 3439 states have (on average 1.6466996219831347) internal successors, (5663), 3453 states have internal predecessors, (5663), 300 states have call successors, (300), 168 states have call predecessors, (300), 168 states have return successors, (300), 288 states have call predecessors, (300), 300 states have call successors, (300) [2024-11-13 23:28:09,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3909 states to 3909 states and 6263 transitions. [2024-11-13 23:28:09,595 INFO L78 Accepts]: Start accepts. Automaton has 3909 states and 6263 transitions. Word has length 112 [2024-11-13 23:28:09,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 23:28:09,596 INFO L471 AbstractCegarLoop]: Abstraction has 3909 states and 6263 transitions. [2024-11-13 23:28:09,596 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 3 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-13 23:28:09,596 INFO L276 IsEmpty]: Start isEmpty. Operand 3909 states and 6263 transitions. [2024-11-13 23:28:09,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2024-11-13 23:28:09,606 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 23:28:09,606 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 23:28:09,626 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbb1a979-9020-49e0-80d1-d5c287a4188a/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-13 23:28:09,811 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbb1a979-9020-49e0-80d1-d5c287a4188a/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-11-13 23:28:09,811 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 23:28:09,812 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 23:28:09,812 INFO L85 PathProgramCache]: Analyzing trace with hash -1729247948, now seen corresponding path program 1 times [2024-11-13 23:28:09,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-13 23:28:09,812 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211086906] [2024-11-13 23:28:09,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:28:09,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 23:28:09,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:28:10,029 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 10 proven. 25 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-13 23:28:10,030 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-13 23:28:10,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [211086906] [2024-11-13 23:28:10,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [211086906] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 23:28:10,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2092847591] [2024-11-13 23:28:10,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:28:10,030 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 23:28:10,030 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbb1a979-9020-49e0-80d1-d5c287a4188a/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-13 23:28:10,032 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbb1a979-9020-49e0-80d1-d5c287a4188a/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 23:28:10,042 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbb1a979-9020-49e0-80d1-d5c287a4188a/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-13 23:28:10,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:28:10,174 INFO L255 TraceCheckSpWp]: Trace formula consists of 486 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-13 23:28:10,175 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 23:28:10,210 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-13 23:28:10,210 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 23:28:10,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2092847591] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 23:28:10,210 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 23:28:10,210 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-11-13 23:28:10,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85453124] [2024-11-13 23:28:10,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 23:28:10,211 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 23:28:10,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-13 23:28:10,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 23:28:10,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-13 23:28:10,212 INFO L87 Difference]: Start difference. First operand 3909 states and 6263 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 3 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-13 23:28:10,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 23:28:10,861 INFO L93 Difference]: Finished difference Result 5871 states and 8842 transitions. [2024-11-13 23:28:10,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 23:28:10,862 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 3 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) Word has length 112 [2024-11-13 23:28:10,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 23:28:10,895 INFO L225 Difference]: With dead ends: 5871 [2024-11-13 23:28:10,895 INFO L226 Difference]: Without dead ends: 4357 [2024-11-13 23:28:10,900 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-13 23:28:10,901 INFO L432 NwaCegarLoop]: 3171 mSDtfsCounter, 3372 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 241 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3372 SdHoareTripleChecker+Valid, 3195 SdHoareTripleChecker+Invalid, 245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 241 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-13 23:28:10,902 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3372 Valid, 3195 Invalid, 245 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 241 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-13 23:28:10,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4357 states. [2024-11-13 23:28:11,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4357 to 4357. [2024-11-13 23:28:11,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4357 states, 3823 states have (on average 1.597436568140204) internal successors, (6107), 3837 states have internal predecessors, (6107), 320 states have call successors, (320), 212 states have call predecessors, (320), 212 states have return successors, (320), 308 states have call predecessors, (320), 320 states have call successors, (320) [2024-11-13 23:28:11,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4357 states to 4357 states and 6747 transitions. [2024-11-13 23:28:11,104 INFO L78 Accepts]: Start accepts. Automaton has 4357 states and 6747 transitions. Word has length 112 [2024-11-13 23:28:11,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 23:28:11,104 INFO L471 AbstractCegarLoop]: Abstraction has 4357 states and 6747 transitions. [2024-11-13 23:28:11,104 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 3 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-13 23:28:11,105 INFO L276 IsEmpty]: Start isEmpty. Operand 4357 states and 6747 transitions. [2024-11-13 23:28:11,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2024-11-13 23:28:11,111 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 23:28:11,112 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 23:28:11,132 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbb1a979-9020-49e0-80d1-d5c287a4188a/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-13 23:28:11,312 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbb1a979-9020-49e0-80d1-d5c287a4188a/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2024-11-13 23:28:11,313 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 23:28:11,313 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 23:28:11,314 INFO L85 PathProgramCache]: Analyzing trace with hash -115106623, now seen corresponding path program 1 times [2024-11-13 23:28:11,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-13 23:28:11,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618258284] [2024-11-13 23:28:11,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:28:11,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 23:28:11,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:28:11,519 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 10 proven. 26 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-13 23:28:11,519 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-13 23:28:11,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1618258284] [2024-11-13 23:28:11,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1618258284] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 23:28:11,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1289368500] [2024-11-13 23:28:11,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:28:11,520 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 23:28:11,520 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbb1a979-9020-49e0-80d1-d5c287a4188a/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-13 23:28:11,522 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbb1a979-9020-49e0-80d1-d5c287a4188a/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 23:28:11,525 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbb1a979-9020-49e0-80d1-d5c287a4188a/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-13 23:28:11,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:28:11,663 INFO L255 TraceCheckSpWp]: Trace formula consists of 485 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-13 23:28:11,665 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 23:28:11,697 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-13 23:28:11,697 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 23:28:11,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1289368500] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 23:28:11,698 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 23:28:11,698 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-11-13 23:28:11,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997747058] [2024-11-13 23:28:11,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 23:28:11,698 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 23:28:11,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-13 23:28:11,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 23:28:11,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-13 23:28:11,699 INFO L87 Difference]: Start difference. First operand 4357 states and 6747 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-13 23:28:12,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 23:28:12,436 INFO L93 Difference]: Finished difference Result 8123 states and 11672 transitions. [2024-11-13 23:28:12,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 23:28:12,437 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 113 [2024-11-13 23:28:12,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 23:28:12,460 INFO L225 Difference]: With dead ends: 8123 [2024-11-13 23:28:12,460 INFO L226 Difference]: Without dead ends: 5413 [2024-11-13 23:28:12,469 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-13 23:28:12,470 INFO L432 NwaCegarLoop]: 3174 mSDtfsCounter, 52 mSDsluCounter, 3149 mSDsCounter, 0 mSdLazyCounter, 471 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 6323 SdHoareTripleChecker+Invalid, 473 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 471 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-13 23:28:12,470 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 6323 Invalid, 473 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 471 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-13 23:28:12,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5413 states. [2024-11-13 23:28:12,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5413 to 4697. [2024-11-13 23:28:12,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4697 states, 4127 states have (on average 1.5873515871092803) internal successors, (6551), 4142 states have internal predecessors, (6551), 338 states have call successors, (338), 230 states have call predecessors, (338), 230 states have return successors, (338), 325 states have call predecessors, (338), 338 states have call successors, (338) [2024-11-13 23:28:12,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4697 states to 4697 states and 7227 transitions. [2024-11-13 23:28:12,706 INFO L78 Accepts]: Start accepts. Automaton has 4697 states and 7227 transitions. Word has length 113 [2024-11-13 23:28:12,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 23:28:12,707 INFO L471 AbstractCegarLoop]: Abstraction has 4697 states and 7227 transitions. [2024-11-13 23:28:12,707 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-13 23:28:12,707 INFO L276 IsEmpty]: Start isEmpty. Operand 4697 states and 7227 transitions. [2024-11-13 23:28:12,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2024-11-13 23:28:12,715 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 23:28:12,715 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 23:28:12,735 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbb1a979-9020-49e0-80d1-d5c287a4188a/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-13 23:28:12,915 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbb1a979-9020-49e0-80d1-d5c287a4188a/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-13 23:28:12,915 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 23:28:12,916 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 23:28:12,916 INFO L85 PathProgramCache]: Analyzing trace with hash 1248603187, now seen corresponding path program 1 times [2024-11-13 23:28:12,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-13 23:28:12,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268237055] [2024-11-13 23:28:12,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:28:12,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 23:28:12,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:28:13,105 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 19 proven. 26 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-13 23:28:13,105 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-13 23:28:13,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268237055] [2024-11-13 23:28:13,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1268237055] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 23:28:13,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1163421871] [2024-11-13 23:28:13,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:28:13,105 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 23:28:13,106 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbb1a979-9020-49e0-80d1-d5c287a4188a/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-13 23:28:13,108 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbb1a979-9020-49e0-80d1-d5c287a4188a/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 23:28:13,110 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbb1a979-9020-49e0-80d1-d5c287a4188a/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-13 23:28:13,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:28:13,324 INFO L255 TraceCheckSpWp]: Trace formula consists of 491 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-13 23:28:13,327 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 23:28:13,525 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 67 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-13 23:28:13,526 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 23:28:13,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1163421871] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 23:28:13,526 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 23:28:13,526 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2024-11-13 23:28:13,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502017811] [2024-11-13 23:28:13,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 23:28:13,527 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 23:28:13,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-13 23:28:13,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 23:28:13,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-13 23:28:13,528 INFO L87 Difference]: Start difference. First operand 4697 states and 7227 transitions. Second operand has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 4 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (10), 3 states have call predecessors, (10), 4 states have call successors, (10) [2024-11-13 23:28:14,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 23:28:14,517 INFO L93 Difference]: Finished difference Result 7567 states and 11003 transitions. [2024-11-13 23:28:14,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 23:28:14,518 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 4 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (10), 3 states have call predecessors, (10), 4 states have call successors, (10) Word has length 115 [2024-11-13 23:28:14,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 23:28:14,545 INFO L225 Difference]: With dead ends: 7567 [2024-11-13 23:28:14,545 INFO L226 Difference]: Without dead ends: 6003 [2024-11-13 23:28:14,552 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-13 23:28:14,553 INFO L432 NwaCegarLoop]: 3236 mSDtfsCounter, 3412 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 316 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3412 SdHoareTripleChecker+Valid, 3354 SdHoareTripleChecker+Invalid, 321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 316 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-13 23:28:14,553 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3412 Valid, 3354 Invalid, 321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 316 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-13 23:28:14,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6003 states. [2024-11-13 23:28:14,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6003 to 5850. [2024-11-13 23:28:14,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5850 states, 5153 states have (on average 1.5295944110227053) internal successors, (7882), 5168 states have internal predecessors, (7882), 390 states have call successors, (390), 305 states have call predecessors, (390), 305 states have return successors, (412), 377 states have call predecessors, (412), 390 states have call successors, (412) [2024-11-13 23:28:14,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5850 states to 5850 states and 8684 transitions. [2024-11-13 23:28:15,009 INFO L78 Accepts]: Start accepts. Automaton has 5850 states and 8684 transitions. Word has length 115 [2024-11-13 23:28:15,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 23:28:15,010 INFO L471 AbstractCegarLoop]: Abstraction has 5850 states and 8684 transitions. [2024-11-13 23:28:15,010 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 4 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (10), 3 states have call predecessors, (10), 4 states have call successors, (10) [2024-11-13 23:28:15,010 INFO L276 IsEmpty]: Start isEmpty. Operand 5850 states and 8684 transitions. [2024-11-13 23:28:15,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2024-11-13 23:28:15,021 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 23:28:15,021 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 23:28:15,041 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbb1a979-9020-49e0-80d1-d5c287a4188a/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-13 23:28:15,221 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbb1a979-9020-49e0-80d1-d5c287a4188a/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-13 23:28:15,222 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 23:28:15,222 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 23:28:15,222 INFO L85 PathProgramCache]: Analyzing trace with hash 85708131, now seen corresponding path program 1 times [2024-11-13 23:28:15,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-13 23:28:15,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477813278] [2024-11-13 23:28:15,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:28:15,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 23:28:15,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:28:15,418 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 19 proven. 27 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-11-13 23:28:15,419 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-13 23:28:15,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477813278] [2024-11-13 23:28:15,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1477813278] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 23:28:15,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [222673828] [2024-11-13 23:28:15,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:28:15,420 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 23:28:15,420 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbb1a979-9020-49e0-80d1-d5c287a4188a/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-13 23:28:15,423 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbb1a979-9020-49e0-80d1-d5c287a4188a/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 23:28:15,425 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbb1a979-9020-49e0-80d1-d5c287a4188a/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-13 23:28:15,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:28:15,563 INFO L255 TraceCheckSpWp]: Trace formula consists of 490 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-13 23:28:15,566 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 23:28:15,677 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-13 23:28:15,677 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 23:28:15,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [222673828] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 23:28:15,677 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 23:28:15,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 9 [2024-11-13 23:28:15,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015345662] [2024-11-13 23:28:15,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 23:28:15,678 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 23:28:15,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-13 23:28:15,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 23:28:15,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-13 23:28:15,681 INFO L87 Difference]: Start difference. First operand 5850 states and 8684 transitions. Second operand has 5 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-13 23:28:17,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 23:28:17,030 INFO L93 Difference]: Finished difference Result 9438 states and 13341 transitions. [2024-11-13 23:28:17,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-13 23:28:17,031 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 116 [2024-11-13 23:28:17,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 23:28:17,058 INFO L225 Difference]: With dead ends: 9438 [2024-11-13 23:28:17,059 INFO L226 Difference]: Without dead ends: 6923 [2024-11-13 23:28:17,065 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-11-13 23:28:17,066 INFO L432 NwaCegarLoop]: 3223 mSDtfsCounter, 86 mSDsluCounter, 9463 mSDsCounter, 0 mSdLazyCounter, 1109 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 12686 SdHoareTripleChecker+Invalid, 1132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 1109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-13 23:28:17,066 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 12686 Invalid, 1132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 1109 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-13 23:28:17,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6923 states. [2024-11-13 23:28:17,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6923 to 6628. [2024-11-13 23:28:17,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6628 states, 5721 states have (on average 1.4944939695857367) internal successors, (8550), 5736 states have internal predecessors, (8550), 522 states have call successors, (522), 397 states have call predecessors, (522), 383 states have return successors, (570), 495 states have call predecessors, (570), 522 states have call successors, (570) [2024-11-13 23:28:17,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6628 states to 6628 states and 9642 transitions. [2024-11-13 23:28:17,514 INFO L78 Accepts]: Start accepts. Automaton has 6628 states and 9642 transitions. Word has length 116 [2024-11-13 23:28:17,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 23:28:17,515 INFO L471 AbstractCegarLoop]: Abstraction has 6628 states and 9642 transitions. [2024-11-13 23:28:17,515 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-13 23:28:17,515 INFO L276 IsEmpty]: Start isEmpty. Operand 6628 states and 9642 transitions. [2024-11-13 23:28:17,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2024-11-13 23:28:17,525 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 23:28:17,525 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 23:28:17,545 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbb1a979-9020-49e0-80d1-d5c287a4188a/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-13 23:28:17,729 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbb1a979-9020-49e0-80d1-d5c287a4188a/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-13 23:28:17,730 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 23:28:17,730 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 23:28:17,730 INFO L85 PathProgramCache]: Analyzing trace with hash 1188695590, now seen corresponding path program 1 times [2024-11-13 23:28:17,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-13 23:28:17,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312986787] [2024-11-13 23:28:17,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:28:17,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 23:28:17,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:28:17,832 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 21 proven. 5 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2024-11-13 23:28:17,832 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-13 23:28:17,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312986787] [2024-11-13 23:28:17,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [312986787] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 23:28:17,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1451252211] [2024-11-13 23:28:17,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:28:17,832 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 23:28:17,832 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbb1a979-9020-49e0-80d1-d5c287a4188a/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-13 23:28:17,835 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbb1a979-9020-49e0-80d1-d5c287a4188a/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 23:28:17,840 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbb1a979-9020-49e0-80d1-d5c287a4188a/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-13 23:28:17,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:28:17,979 INFO L255 TraceCheckSpWp]: Trace formula consists of 495 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-13 23:28:17,981 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 23:28:18,012 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-13 23:28:18,012 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 23:28:18,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1451252211] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 23:28:18,013 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 23:28:18,013 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2024-11-13 23:28:18,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591766592] [2024-11-13 23:28:18,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 23:28:18,013 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 23:28:18,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-13 23:28:18,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 23:28:18,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-13 23:28:18,015 INFO L87 Difference]: Start difference. First operand 6628 states and 9642 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2024-11-13 23:28:18,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 23:28:18,907 INFO L93 Difference]: Finished difference Result 11070 states and 15452 transitions. [2024-11-13 23:28:18,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 23:28:18,907 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 116 [2024-11-13 23:28:18,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 23:28:18,940 INFO L225 Difference]: With dead ends: 11070 [2024-11-13 23:28:18,940 INFO L226 Difference]: Without dead ends: 8489 [2024-11-13 23:28:18,948 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-13 23:28:18,948 INFO L432 NwaCegarLoop]: 3224 mSDtfsCounter, 65 mSDsluCounter, 3163 mSDsCounter, 0 mSdLazyCounter, 481 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 6387 SdHoareTripleChecker+Invalid, 481 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 481 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-13 23:28:18,949 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 6387 Invalid, 481 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 481 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-13 23:28:18,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8489 states. [2024-11-13 23:28:19,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8489 to 7467. [2024-11-13 23:28:19,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7467 states, 6464 states have (on average 1.4801980198019802) internal successors, (9568), 6479 states have internal predecessors, (9568), 570 states have call successors, (570), 445 states have call predecessors, (570), 431 states have return successors, (618), 543 states have call predecessors, (618), 570 states have call successors, (618) [2024-11-13 23:28:19,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7467 states to 7467 states and 10756 transitions. [2024-11-13 23:28:19,466 INFO L78 Accepts]: Start accepts. Automaton has 7467 states and 10756 transitions. Word has length 116 [2024-11-13 23:28:19,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 23:28:19,467 INFO L471 AbstractCegarLoop]: Abstraction has 7467 states and 10756 transitions. [2024-11-13 23:28:19,467 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2024-11-13 23:28:19,467 INFO L276 IsEmpty]: Start isEmpty. Operand 7467 states and 10756 transitions. [2024-11-13 23:28:19,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2024-11-13 23:28:19,481 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 23:28:19,481 INFO L215 NwaCegarLoop]: trace histogram [5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 23:28:19,501 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbb1a979-9020-49e0-80d1-d5c287a4188a/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-13 23:28:19,681 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbb1a979-9020-49e0-80d1-d5c287a4188a/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-13 23:28:19,682 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 23:28:19,682 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 23:28:19,684 INFO L85 PathProgramCache]: Analyzing trace with hash 723510024, now seen corresponding path program 1 times [2024-11-13 23:28:19,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-13 23:28:19,688 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288145248] [2024-11-13 23:28:19,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:28:19,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 23:28:19,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:28:20,006 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 12 proven. 26 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2024-11-13 23:28:20,006 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-13 23:28:20,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1288145248] [2024-11-13 23:28:20,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1288145248] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 23:28:20,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [472761332] [2024-11-13 23:28:20,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:28:20,007 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 23:28:20,008 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbb1a979-9020-49e0-80d1-d5c287a4188a/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-13 23:28:20,011 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbb1a979-9020-49e0-80d1-d5c287a4188a/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 23:28:20,013 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbb1a979-9020-49e0-80d1-d5c287a4188a/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-13 23:28:20,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:28:20,167 INFO L255 TraceCheckSpWp]: Trace formula consists of 550 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-13 23:28:20,169 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 23:28:20,278 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-13 23:28:20,278 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 23:28:20,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [472761332] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 23:28:20,278 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 23:28:20,278 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2024-11-13 23:28:20,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997717103] [2024-11-13 23:28:20,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 23:28:20,280 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-13 23:28:20,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-13 23:28:20,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-13 23:28:20,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-11-13 23:28:20,281 INFO L87 Difference]: Start difference. First operand 7467 states and 10756 transitions. Second operand has 7 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 3 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2024-11-13 23:28:21,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 23:28:21,549 INFO L93 Difference]: Finished difference Result 11571 states and 16107 transitions. [2024-11-13 23:28:21,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-13 23:28:21,550 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 3 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 120 [2024-11-13 23:28:21,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 23:28:21,581 INFO L225 Difference]: With dead ends: 11571 [2024-11-13 23:28:21,581 INFO L226 Difference]: Without dead ends: 7731 [2024-11-13 23:28:21,591 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-11-13 23:28:21,591 INFO L432 NwaCegarLoop]: 3210 mSDtfsCounter, 103 mSDsluCounter, 12792 mSDsCounter, 0 mSdLazyCounter, 1272 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 16002 SdHoareTripleChecker+Invalid, 1275 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1272 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-13 23:28:21,592 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [104 Valid, 16002 Invalid, 1275 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 1272 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-13 23:28:21,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7731 states. [2024-11-13 23:28:21,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7731 to 7459. [2024-11-13 23:28:21,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7459 states, 6473 states have (on average 1.4844739687934496) internal successors, (9609), 6487 states have internal predecessors, (9609), 559 states have call successors, (559), 438 states have call predecessors, (559), 425 states have return successors, (605), 534 states have call predecessors, (605), 559 states have call successors, (605) [2024-11-13 23:28:22,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7459 states to 7459 states and 10773 transitions. [2024-11-13 23:28:22,012 INFO L78 Accepts]: Start accepts. Automaton has 7459 states and 10773 transitions. Word has length 120 [2024-11-13 23:28:22,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 23:28:22,013 INFO L471 AbstractCegarLoop]: Abstraction has 7459 states and 10773 transitions. [2024-11-13 23:28:22,013 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 3 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2024-11-13 23:28:22,013 INFO L276 IsEmpty]: Start isEmpty. Operand 7459 states and 10773 transitions. [2024-11-13 23:28:22,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2024-11-13 23:28:22,023 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 23:28:22,024 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 23:28:22,044 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbb1a979-9020-49e0-80d1-d5c287a4188a/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-11-13 23:28:22,224 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbb1a979-9020-49e0-80d1-d5c287a4188a/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 23:28:22,225 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 23:28:22,225 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 23:28:22,225 INFO L85 PathProgramCache]: Analyzing trace with hash -1703833963, now seen corresponding path program 1 times [2024-11-13 23:28:22,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-13 23:28:22,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168211306] [2024-11-13 23:28:22,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:28:22,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 23:28:22,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:28:22,452 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 17 proven. 25 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-11-13 23:28:22,452 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-13 23:28:22,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1168211306] [2024-11-13 23:28:22,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1168211306] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 23:28:22,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [261800489] [2024-11-13 23:28:22,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:28:22,453 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 23:28:22,453 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbb1a979-9020-49e0-80d1-d5c287a4188a/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-13 23:28:22,455 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbb1a979-9020-49e0-80d1-d5c287a4188a/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 23:28:22,457 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbb1a979-9020-49e0-80d1-d5c287a4188a/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-13 23:28:22,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:28:22,589 INFO L255 TraceCheckSpWp]: Trace formula consists of 504 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-13 23:28:22,592 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 23:28:22,814 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-11-13 23:28:22,815 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 23:28:22,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [261800489] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 23:28:22,815 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 23:28:22,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 10 [2024-11-13 23:28:22,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960627794] [2024-11-13 23:28:22,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 23:28:22,816 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 23:28:22,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-13 23:28:22,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 23:28:22,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-11-13 23:28:22,818 INFO L87 Difference]: Start difference. First operand 7459 states and 10773 transitions. Second operand has 6 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (10), 3 states have call predecessors, (10), 4 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-13 23:28:24,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 23:28:24,156 INFO L93 Difference]: Finished difference Result 11479 states and 16080 transitions. [2024-11-13 23:28:24,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-13 23:28:24,156 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (10), 3 states have call predecessors, (10), 4 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 118 [2024-11-13 23:28:24,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 23:28:24,185 INFO L225 Difference]: With dead ends: 11479 [2024-11-13 23:28:24,185 INFO L226 Difference]: Without dead ends: 7937 [2024-11-13 23:28:24,195 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-11-13 23:28:24,195 INFO L432 NwaCegarLoop]: 3123 mSDtfsCounter, 3409 mSDsluCounter, 9310 mSDsCounter, 0 mSdLazyCounter, 1104 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3418 SdHoareTripleChecker+Valid, 12433 SdHoareTripleChecker+Invalid, 1152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 1104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-13 23:28:24,195 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3418 Valid, 12433 Invalid, 1152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 1104 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-13 23:28:24,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7937 states. [2024-11-13 23:28:24,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7937 to 7829. [2024-11-13 23:28:24,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7829 states, 6803 states have (on average 1.4633250036748493) internal successors, (9955), 6817 states have internal predecessors, (9955), 567 states have call successors, (567), 466 states have call predecessors, (567), 457 states have return successors, (613), 546 states have call predecessors, (613), 567 states have call successors, (613) [2024-11-13 23:28:24,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7829 states to 7829 states and 11135 transitions. [2024-11-13 23:28:24,631 INFO L78 Accepts]: Start accepts. Automaton has 7829 states and 11135 transitions. Word has length 118 [2024-11-13 23:28:24,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 23:28:24,632 INFO L471 AbstractCegarLoop]: Abstraction has 7829 states and 11135 transitions. [2024-11-13 23:28:24,632 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (10), 3 states have call predecessors, (10), 4 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-13 23:28:24,632 INFO L276 IsEmpty]: Start isEmpty. Operand 7829 states and 11135 transitions. [2024-11-13 23:28:24,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2024-11-13 23:28:24,642 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 23:28:24,642 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 23:28:24,663 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbb1a979-9020-49e0-80d1-d5c287a4188a/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-11-13 23:28:24,843 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbb1a979-9020-49e0-80d1-d5c287a4188a/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 23:28:24,843 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 23:28:24,844 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 23:28:24,844 INFO L85 PathProgramCache]: Analyzing trace with hash -112692683, now seen corresponding path program 1 times [2024-11-13 23:28:24,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-13 23:28:24,844 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996155137] [2024-11-13 23:28:24,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:28:24,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 23:28:24,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:28:25,006 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 17 proven. 27 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-11-13 23:28:25,006 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-13 23:28:25,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [996155137] [2024-11-13 23:28:25,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [996155137] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 23:28:25,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1740694655] [2024-11-13 23:28:25,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:28:25,007 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 23:28:25,007 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbb1a979-9020-49e0-80d1-d5c287a4188a/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-13 23:28:25,010 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbb1a979-9020-49e0-80d1-d5c287a4188a/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 23:28:25,059 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbb1a979-9020-49e0-80d1-d5c287a4188a/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-13 23:28:25,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:28:25,215 INFO L255 TraceCheckSpWp]: Trace formula consists of 498 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-13 23:28:25,218 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 23:28:25,271 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 73 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-13 23:28:25,272 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 23:28:25,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1740694655] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 23:28:25,272 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 23:28:25,272 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-11-13 23:28:25,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025860686] [2024-11-13 23:28:25,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 23:28:25,273 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 23:28:25,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-13 23:28:25,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 23:28:25,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-13 23:28:25,274 INFO L87 Difference]: Start difference. First operand 7829 states and 11135 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2024-11-13 23:28:26,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 23:28:26,269 INFO L93 Difference]: Finished difference Result 11581 states and 16143 transitions. [2024-11-13 23:28:26,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 23:28:26,269 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 118 [2024-11-13 23:28:26,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 23:28:26,297 INFO L225 Difference]: With dead ends: 11581 [2024-11-13 23:28:26,298 INFO L226 Difference]: Without dead ends: 7845 [2024-11-13 23:28:26,307 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-13 23:28:26,307 INFO L432 NwaCegarLoop]: 3243 mSDtfsCounter, 89 mSDsluCounter, 3151 mSDsCounter, 0 mSdLazyCounter, 487 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 6394 SdHoareTripleChecker+Invalid, 489 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 487 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-13 23:28:26,308 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 6394 Invalid, 489 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 487 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-13 23:28:26,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7845 states. [2024-11-13 23:28:26,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7845 to 7761. [2024-11-13 23:28:26,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7761 states, 6735 states have (on average 1.444543429844098) internal successors, (9729), 6749 states have internal predecessors, (9729), 567 states have call successors, (567), 466 states have call predecessors, (567), 457 states have return successors, (613), 546 states have call predecessors, (613), 567 states have call successors, (613) [2024-11-13 23:28:26,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7761 states to 7761 states and 10909 transitions. [2024-11-13 23:28:26,758 INFO L78 Accepts]: Start accepts. Automaton has 7761 states and 10909 transitions. Word has length 118 [2024-11-13 23:28:26,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 23:28:26,758 INFO L471 AbstractCegarLoop]: Abstraction has 7761 states and 10909 transitions. [2024-11-13 23:28:26,758 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2024-11-13 23:28:26,758 INFO L276 IsEmpty]: Start isEmpty. Operand 7761 states and 10909 transitions. [2024-11-13 23:28:26,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2024-11-13 23:28:26,767 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 23:28:26,768 INFO L215 NwaCegarLoop]: trace histogram [5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 23:28:26,787 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbb1a979-9020-49e0-80d1-d5c287a4188a/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-13 23:28:26,968 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbb1a979-9020-49e0-80d1-d5c287a4188a/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 23:28:26,969 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 23:28:26,969 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 23:28:26,969 INFO L85 PathProgramCache]: Analyzing trace with hash 1104236889, now seen corresponding path program 1 times [2024-11-13 23:28:26,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-13 23:28:26,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403093865] [2024-11-13 23:28:26,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:28:26,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 23:28:26,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:28:27,242 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 12 proven. 26 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2024-11-13 23:28:27,242 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-13 23:28:27,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1403093865] [2024-11-13 23:28:27,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1403093865] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 23:28:27,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1621577956] [2024-11-13 23:28:27,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:28:27,243 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 23:28:27,243 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbb1a979-9020-49e0-80d1-d5c287a4188a/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-13 23:28:27,245 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbb1a979-9020-49e0-80d1-d5c287a4188a/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 23:28:27,249 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbb1a979-9020-49e0-80d1-d5c287a4188a/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-13 23:28:27,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:28:27,405 INFO L255 TraceCheckSpWp]: Trace formula consists of 559 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-13 23:28:27,407 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 23:28:27,741 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-13 23:28:27,741 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 23:28:27,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1621577956] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 23:28:27,741 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 23:28:27,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [6] total 13 [2024-11-13 23:28:27,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199375667] [2024-11-13 23:28:27,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 23:28:27,742 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-13 23:28:27,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-13 23:28:27,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-13 23:28:27,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2024-11-13 23:28:27,743 INFO L87 Difference]: Start difference. First operand 7761 states and 10909 transitions. Second operand has 9 states, 6 states have (on average 13.0) internal successors, (78), 6 states have internal predecessors, (78), 3 states have call successors, (15), 5 states have call predecessors, (15), 6 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2024-11-13 23:28:29,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 23:28:29,489 INFO L93 Difference]: Finished difference Result 13044 states and 17458 transitions. [2024-11-13 23:28:29,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-13 23:28:29,490 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 6 states have (on average 13.0) internal successors, (78), 6 states have internal predecessors, (78), 3 states have call successors, (15), 5 states have call predecessors, (15), 6 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 123 [2024-11-13 23:28:29,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 23:28:29,526 INFO L225 Difference]: With dead ends: 13044 [2024-11-13 23:28:29,526 INFO L226 Difference]: Without dead ends: 9038 [2024-11-13 23:28:29,536 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=89, Invalid=291, Unknown=0, NotChecked=0, Total=380 [2024-11-13 23:28:29,538 INFO L432 NwaCegarLoop]: 3122 mSDtfsCounter, 3661 mSDsluCounter, 12457 mSDsCounter, 0 mSdLazyCounter, 1500 mSolverCounterSat, 127 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3679 SdHoareTripleChecker+Valid, 15579 SdHoareTripleChecker+Invalid, 1627 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 127 IncrementalHoareTripleChecker+Valid, 1500 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-13 23:28:29,538 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3679 Valid, 15579 Invalid, 1627 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [127 Valid, 1500 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-13 23:28:29,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9038 states. [2024-11-13 23:28:30,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9038 to 7239. [2024-11-13 23:28:30,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7239 states, 6317 states have (on average 1.4486306791198353) internal successors, (9151), 6343 states have internal predecessors, (9151), 498 states have call successors, (498), 410 states have call predecessors, (498), 422 states have return successors, (522), 486 states have call predecessors, (522), 498 states have call successors, (522) [2024-11-13 23:28:30,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7239 states to 7239 states and 10171 transitions. [2024-11-13 23:28:30,034 INFO L78 Accepts]: Start accepts. Automaton has 7239 states and 10171 transitions. Word has length 123 [2024-11-13 23:28:30,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 23:28:30,035 INFO L471 AbstractCegarLoop]: Abstraction has 7239 states and 10171 transitions. [2024-11-13 23:28:30,035 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 6 states have (on average 13.0) internal successors, (78), 6 states have internal predecessors, (78), 3 states have call successors, (15), 5 states have call predecessors, (15), 6 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2024-11-13 23:28:30,035 INFO L276 IsEmpty]: Start isEmpty. Operand 7239 states and 10171 transitions. [2024-11-13 23:28:30,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2024-11-13 23:28:30,043 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 23:28:30,044 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 23:28:30,065 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbb1a979-9020-49e0-80d1-d5c287a4188a/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-13 23:28:30,244 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbb1a979-9020-49e0-80d1-d5c287a4188a/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-13 23:28:30,244 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 23:28:30,245 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 23:28:30,245 INFO L85 PathProgramCache]: Analyzing trace with hash -142984267, now seen corresponding path program 1 times [2024-11-13 23:28:30,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-13 23:28:30,245 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1280399192] [2024-11-13 23:28:30,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:28:30,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 23:28:30,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:28:30,397 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 17 proven. 27 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2024-11-13 23:28:30,397 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-13 23:28:30,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1280399192] [2024-11-13 23:28:30,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1280399192] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 23:28:30,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [532713642] [2024-11-13 23:28:30,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:28:30,398 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 23:28:30,398 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbb1a979-9020-49e0-80d1-d5c287a4188a/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-13 23:28:30,399 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbb1a979-9020-49e0-80d1-d5c287a4188a/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 23:28:30,402 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbb1a979-9020-49e0-80d1-d5c287a4188a/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-13 23:28:30,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:28:30,538 INFO L255 TraceCheckSpWp]: Trace formula consists of 502 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-13 23:28:30,540 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 23:28:30,627 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 79 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 23:28:30,627 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 23:28:30,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [532713642] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 23:28:30,627 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 23:28:30,627 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 9 [2024-11-13 23:28:30,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130290326] [2024-11-13 23:28:30,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 23:28:30,628 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 23:28:30,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-13 23:28:30,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 23:28:30,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-13 23:28:30,629 INFO L87 Difference]: Start difference. First operand 7239 states and 10171 transitions. Second operand has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 4 states have call successors, (11), 4 states have call predecessors, (11), 4 states have return successors, (11), 4 states have call predecessors, (11), 4 states have call successors, (11) [2024-11-13 23:28:31,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 23:28:31,998 INFO L93 Difference]: Finished difference Result 11509 states and 15467 transitions. [2024-11-13 23:28:31,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-13 23:28:31,998 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 4 states have call successors, (11), 4 states have call predecessors, (11), 4 states have return successors, (11), 4 states have call predecessors, (11), 4 states have call successors, (11) Word has length 120 [2024-11-13 23:28:31,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 23:28:32,026 INFO L225 Difference]: With dead ends: 11509 [2024-11-13 23:28:32,026 INFO L226 Difference]: Without dead ends: 7809 [2024-11-13 23:28:32,033 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-11-13 23:28:32,034 INFO L432 NwaCegarLoop]: 3225 mSDtfsCounter, 88 mSDsluCounter, 9454 mSDsCounter, 0 mSdLazyCounter, 1102 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 12679 SdHoareTripleChecker+Invalid, 1125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 1102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-13 23:28:32,034 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [93 Valid, 12679 Invalid, 1125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 1102 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-13 23:28:32,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7809 states. [2024-11-13 23:28:32,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7809 to 7249. [2024-11-13 23:28:32,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7249 states, 6261 states have (on average 1.4393866794441783) internal successors, (9012), 6298 states have internal predecessors, (9012), 529 states have call successors, (529), 427 states have call predecessors, (529), 457 states have return successors, (589), 524 states have call predecessors, (589), 529 states have call successors, (589) [2024-11-13 23:28:32,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7249 states to 7249 states and 10130 transitions. [2024-11-13 23:28:32,562 INFO L78 Accepts]: Start accepts. Automaton has 7249 states and 10130 transitions. Word has length 120 [2024-11-13 23:28:32,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 23:28:32,563 INFO L471 AbstractCegarLoop]: Abstraction has 7249 states and 10130 transitions. [2024-11-13 23:28:32,563 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 4 states have call successors, (11), 4 states have call predecessors, (11), 4 states have return successors, (11), 4 states have call predecessors, (11), 4 states have call successors, (11) [2024-11-13 23:28:32,563 INFO L276 IsEmpty]: Start isEmpty. Operand 7249 states and 10130 transitions. [2024-11-13 23:28:32,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2024-11-13 23:28:32,572 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 23:28:32,572 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 23:28:32,593 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbb1a979-9020-49e0-80d1-d5c287a4188a/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-13 23:28:32,775 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbb1a979-9020-49e0-80d1-d5c287a4188a/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-13 23:28:32,776 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 23:28:32,776 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 23:28:32,776 INFO L85 PathProgramCache]: Analyzing trace with hash 650934931, now seen corresponding path program 1 times [2024-11-13 23:28:32,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-13 23:28:32,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699392226] [2024-11-13 23:28:32,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:28:32,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 23:28:32,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:28:32,869 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 26 proven. 4 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2024-11-13 23:28:32,869 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-13 23:28:32,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1699392226] [2024-11-13 23:28:32,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1699392226] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 23:28:32,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1612322845] [2024-11-13 23:28:32,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:28:32,870 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 23:28:32,870 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbb1a979-9020-49e0-80d1-d5c287a4188a/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-13 23:28:32,872 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbb1a979-9020-49e0-80d1-d5c287a4188a/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 23:28:32,875 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbb1a979-9020-49e0-80d1-d5c287a4188a/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-13 23:28:33,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:28:33,027 INFO L255 TraceCheckSpWp]: Trace formula consists of 600 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-13 23:28:33,029 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 23:28:33,063 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 90 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-11-13 23:28:33,063 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 23:28:33,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1612322845] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 23:28:33,063 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 23:28:33,064 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2024-11-13 23:28:33,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083102159] [2024-11-13 23:28:33,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 23:28:33,064 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 23:28:33,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-13 23:28:33,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 23:28:33,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-13 23:28:33,065 INFO L87 Difference]: Start difference. First operand 7249 states and 10130 transitions. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-11-13 23:28:34,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 23:28:34,054 INFO L93 Difference]: Finished difference Result 13662 states and 18082 transitions. [2024-11-13 23:28:34,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 23:28:34,054 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 146 [2024-11-13 23:28:34,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 23:28:34,089 INFO L225 Difference]: With dead ends: 13662 [2024-11-13 23:28:34,089 INFO L226 Difference]: Without dead ends: 9402 [2024-11-13 23:28:34,098 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-13 23:28:34,098 INFO L432 NwaCegarLoop]: 3221 mSDtfsCounter, 55 mSDsluCounter, 3162 mSDsCounter, 0 mSdLazyCounter, 479 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 6383 SdHoareTripleChecker+Invalid, 479 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 479 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-13 23:28:34,099 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 6383 Invalid, 479 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 479 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-13 23:28:34,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9402 states. [2024-11-13 23:28:34,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9402 to 7947. [2024-11-13 23:28:34,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7947 states, 6861 states have (on average 1.4215128989943158) internal successors, (9753), 6899 states have internal predecessors, (9753), 579 states have call successors, (579), 477 states have call predecessors, (579), 505 states have return successors, (635), 571 states have call predecessors, (635), 579 states have call successors, (635) [2024-11-13 23:28:34,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7947 states to 7947 states and 10967 transitions. [2024-11-13 23:28:34,718 INFO L78 Accepts]: Start accepts. Automaton has 7947 states and 10967 transitions. Word has length 146 [2024-11-13 23:28:34,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 23:28:34,719 INFO L471 AbstractCegarLoop]: Abstraction has 7947 states and 10967 transitions. [2024-11-13 23:28:34,719 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-11-13 23:28:34,719 INFO L276 IsEmpty]: Start isEmpty. Operand 7947 states and 10967 transitions. [2024-11-13 23:28:34,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2024-11-13 23:28:34,726 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 23:28:34,726 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 23:28:34,746 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbb1a979-9020-49e0-80d1-d5c287a4188a/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-11-13 23:28:34,926 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbb1a979-9020-49e0-80d1-d5c287a4188a/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 23:28:34,927 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 23:28:34,927 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 23:28:34,927 INFO L85 PathProgramCache]: Analyzing trace with hash -909853176, now seen corresponding path program 1 times [2024-11-13 23:28:34,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-13 23:28:34,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [760597916] [2024-11-13 23:28:34,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:28:34,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 23:28:34,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:28:35,074 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 34 proven. 20 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2024-11-13 23:28:35,074 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-13 23:28:35,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [760597916] [2024-11-13 23:28:35,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [760597916] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 23:28:35,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1654990069] [2024-11-13 23:28:35,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:28:35,074 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 23:28:35,075 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbb1a979-9020-49e0-80d1-d5c287a4188a/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-13 23:28:35,077 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbb1a979-9020-49e0-80d1-d5c287a4188a/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 23:28:35,079 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbb1a979-9020-49e0-80d1-d5c287a4188a/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-13 23:28:35,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:28:35,235 INFO L255 TraceCheckSpWp]: Trace formula consists of 611 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-13 23:28:35,238 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 23:28:35,305 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 87 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-13 23:28:35,308 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 23:28:35,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1654990069] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 23:28:35,309 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 23:28:35,309 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 6 [2024-11-13 23:28:35,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578968197] [2024-11-13 23:28:35,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 23:28:35,309 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 23:28:35,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-13 23:28:35,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 23:28:35,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-13 23:28:35,310 INFO L87 Difference]: Start difference. First operand 7947 states and 10967 transitions. Second operand has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2024-11-13 23:28:36,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 23:28:36,265 INFO L93 Difference]: Finished difference Result 13521 states and 17930 transitions. [2024-11-13 23:28:36,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 23:28:36,266 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 149 [2024-11-13 23:28:36,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 23:28:36,293 INFO L225 Difference]: With dead ends: 13521 [2024-11-13 23:28:36,293 INFO L226 Difference]: Without dead ends: 8517 [2024-11-13 23:28:36,303 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-13 23:28:36,303 INFO L432 NwaCegarLoop]: 3176 mSDtfsCounter, 3344 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 246 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3344 SdHoareTripleChecker+Valid, 3205 SdHoareTripleChecker+Invalid, 250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-13 23:28:36,303 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3344 Valid, 3205 Invalid, 250 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 246 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-13 23:28:36,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8517 states. [2024-11-13 23:28:36,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8517 to 8356. [2024-11-13 23:28:36,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8356 states, 7246 states have (on average 1.392906431134419) internal successors, (10093), 7284 states have internal predecessors, (10093), 579 states have call successors, (579), 501 states have call predecessors, (579), 529 states have return successors, (658), 571 states have call predecessors, (658), 579 states have call successors, (658) [2024-11-13 23:28:36,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8356 states to 8356 states and 11330 transitions. [2024-11-13 23:28:36,953 INFO L78 Accepts]: Start accepts. Automaton has 8356 states and 11330 transitions. Word has length 149 [2024-11-13 23:28:36,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 23:28:36,953 INFO L471 AbstractCegarLoop]: Abstraction has 8356 states and 11330 transitions. [2024-11-13 23:28:36,953 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2024-11-13 23:28:36,954 INFO L276 IsEmpty]: Start isEmpty. Operand 8356 states and 11330 transitions. [2024-11-13 23:28:36,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2024-11-13 23:28:36,962 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 23:28:36,962 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 23:28:36,982 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbb1a979-9020-49e0-80d1-d5c287a4188a/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-11-13 23:28:37,163 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbb1a979-9020-49e0-80d1-d5c287a4188a/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 23:28:37,163 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 23:28:37,163 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 23:28:37,163 INFO L85 PathProgramCache]: Analyzing trace with hash 614100935, now seen corresponding path program 1 times [2024-11-13 23:28:37,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-13 23:28:37,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843340198] [2024-11-13 23:28:37,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:28:37,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 23:28:37,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:28:37,225 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 39 proven. 17 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2024-11-13 23:28:37,226 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-13 23:28:37,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [843340198] [2024-11-13 23:28:37,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [843340198] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 23:28:37,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1560524349] [2024-11-13 23:28:37,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:28:37,226 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 23:28:37,226 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbb1a979-9020-49e0-80d1-d5c287a4188a/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-13 23:28:37,228 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbb1a979-9020-49e0-80d1-d5c287a4188a/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 23:28:37,230 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbb1a979-9020-49e0-80d1-d5c287a4188a/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-13 23:28:37,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:28:37,383 INFO L255 TraceCheckSpWp]: Trace formula consists of 602 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-13 23:28:37,386 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 23:28:37,428 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 96 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-11-13 23:28:37,429 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 23:28:37,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1560524349] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 23:28:37,430 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 23:28:37,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 4 [2024-11-13 23:28:37,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878644870] [2024-11-13 23:28:37,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 23:28:37,431 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 23:28:37,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-13 23:28:37,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 23:28:37,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 23:28:37,431 INFO L87 Difference]: Start difference. First operand 8356 states and 11330 transitions. Second operand has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-11-13 23:28:38,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 23:28:38,631 INFO L93 Difference]: Finished difference Result 13586 states and 17886 transitions. [2024-11-13 23:28:38,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 23:28:38,632 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 149 [2024-11-13 23:28:38,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 23:28:38,660 INFO L225 Difference]: With dead ends: 13586 [2024-11-13 23:28:38,660 INFO L226 Difference]: Without dead ends: 8270 [2024-11-13 23:28:38,670 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 23:28:38,670 INFO L432 NwaCegarLoop]: 3238 mSDtfsCounter, 87 mSDsluCounter, 3141 mSDsCounter, 0 mSdLazyCounter, 485 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 6379 SdHoareTripleChecker+Invalid, 487 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 485 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-13 23:28:38,671 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 6379 Invalid, 487 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 485 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-13 23:28:38,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8270 states. [2024-11-13 23:28:39,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8270 to 8192. [2024-11-13 23:28:39,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8192 states, 7088 states have (on average 1.3665349887133182) internal successors, (9686), 7126 states have internal predecessors, (9686), 576 states have call successors, (576), 498 states have call predecessors, (576), 526 states have return successors, (655), 568 states have call predecessors, (655), 576 states have call successors, (655) [2024-11-13 23:28:39,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8192 states to 8192 states and 10917 transitions. [2024-11-13 23:28:39,323 INFO L78 Accepts]: Start accepts. Automaton has 8192 states and 10917 transitions. Word has length 149 [2024-11-13 23:28:39,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 23:28:39,324 INFO L471 AbstractCegarLoop]: Abstraction has 8192 states and 10917 transitions. [2024-11-13 23:28:39,324 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-11-13 23:28:39,324 INFO L276 IsEmpty]: Start isEmpty. Operand 8192 states and 10917 transitions. [2024-11-13 23:28:39,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2024-11-13 23:28:39,333 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 23:28:39,333 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 23:28:39,355 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbb1a979-9020-49e0-80d1-d5c287a4188a/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-11-13 23:28:39,533 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbb1a979-9020-49e0-80d1-d5c287a4188a/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 23:28:39,533 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 23:28:39,534 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 23:28:39,534 INFO L85 PathProgramCache]: Analyzing trace with hash -815378592, now seen corresponding path program 1 times [2024-11-13 23:28:39,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-13 23:28:39,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1099432166] [2024-11-13 23:28:39,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:28:39,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 23:28:39,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:28:39,726 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 47 proven. 36 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-11-13 23:28:39,727 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-13 23:28:39,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1099432166] [2024-11-13 23:28:39,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1099432166] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 23:28:39,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1558531325] [2024-11-13 23:28:39,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:28:39,727 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 23:28:39,727 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbb1a979-9020-49e0-80d1-d5c287a4188a/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-13 23:28:39,729 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbb1a979-9020-49e0-80d1-d5c287a4188a/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 23:28:39,731 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbb1a979-9020-49e0-80d1-d5c287a4188a/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-13 23:28:39,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:28:39,881 INFO L255 TraceCheckSpWp]: Trace formula consists of 608 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-13 23:28:39,884 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 23:28:39,955 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 115 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-13 23:28:39,955 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 23:28:39,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1558531325] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 23:28:39,956 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 23:28:39,956 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 5 [2024-11-13 23:28:39,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730228096] [2024-11-13 23:28:39,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 23:28:39,957 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 23:28:39,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-13 23:28:39,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 23:28:39,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-13 23:28:39,957 INFO L87 Difference]: Start difference. First operand 8192 states and 10917 transitions. Second operand has 5 states, 5 states have (on average 22.6) internal successors, (113), 5 states have internal predecessors, (113), 4 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) [2024-11-13 23:28:41,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 23:28:41,400 INFO L93 Difference]: Finished difference Result 16454 states and 20549 transitions. [2024-11-13 23:28:41,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-13 23:28:41,400 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.6) internal successors, (113), 5 states have internal predecessors, (113), 4 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) Word has length 152 [2024-11-13 23:28:41,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 23:28:41,433 INFO L225 Difference]: With dead ends: 16454 [2024-11-13 23:28:41,433 INFO L226 Difference]: Without dead ends: 11424 [2024-11-13 23:28:41,442 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-13 23:28:41,444 INFO L432 NwaCegarLoop]: 3222 mSDtfsCounter, 84 mSDsluCounter, 9458 mSDsCounter, 0 mSdLazyCounter, 1097 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 12680 SdHoareTripleChecker+Invalid, 1121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 1097 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-13 23:28:41,444 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 12680 Invalid, 1121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 1097 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-13 23:28:41,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11424 states. [2024-11-13 23:28:42,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11424 to 10631. [2024-11-13 23:28:42,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10631 states, 9039 states have (on average 1.305564774864476) internal successors, (11801), 9092 states have internal predecessors, (11801), 841 states have call successors, (841), 710 states have call predecessors, (841), 749 states have return successors, (1001), 829 states have call predecessors, (1001), 841 states have call successors, (1001) [2024-11-13 23:28:42,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10631 states to 10631 states and 13643 transitions. [2024-11-13 23:28:42,425 INFO L78 Accepts]: Start accepts. Automaton has 10631 states and 13643 transitions. Word has length 152 [2024-11-13 23:28:42,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 23:28:42,426 INFO L471 AbstractCegarLoop]: Abstraction has 10631 states and 13643 transitions. [2024-11-13 23:28:42,426 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.6) internal successors, (113), 5 states have internal predecessors, (113), 4 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) [2024-11-13 23:28:42,426 INFO L276 IsEmpty]: Start isEmpty. Operand 10631 states and 13643 transitions. [2024-11-13 23:28:42,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2024-11-13 23:28:42,436 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 23:28:42,436 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 23:28:42,457 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbb1a979-9020-49e0-80d1-d5c287a4188a/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2024-11-13 23:28:42,637 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbb1a979-9020-49e0-80d1-d5c287a4188a/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 23:28:42,637 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 23:28:42,637 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 23:28:42,637 INFO L85 PathProgramCache]: Analyzing trace with hash -1341558229, now seen corresponding path program 1 times [2024-11-13 23:28:42,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-13 23:28:42,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1764002161] [2024-11-13 23:28:42,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:28:42,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 23:28:42,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:28:42,919 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 175 trivial. 0 not checked. [2024-11-13 23:28:42,920 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-13 23:28:42,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1764002161] [2024-11-13 23:28:42,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1764002161] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 23:28:42,920 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 23:28:42,920 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-13 23:28:42,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261841756] [2024-11-13 23:28:42,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 23:28:42,921 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 23:28:42,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-13 23:28:42,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 23:28:42,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-13 23:28:42,922 INFO L87 Difference]: Start difference. First operand 10631 states and 13643 transitions. Second operand has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 states have internal predecessors, (91), 5 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 5 states have call predecessors, (11), 5 states have call successors, (11) [2024-11-13 23:28:46,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 23:28:46,777 INFO L93 Difference]: Finished difference Result 38310 states and 45803 transitions. [2024-11-13 23:28:46,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 23:28:46,777 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 states have internal predecessors, (91), 5 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 5 states have call predecessors, (11), 5 states have call successors, (11) Word has length 181 [2024-11-13 23:28:46,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 23:28:46,844 INFO L225 Difference]: With dead ends: 38310 [2024-11-13 23:28:46,844 INFO L226 Difference]: Without dead ends: 34520 [2024-11-13 23:28:46,857 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-13 23:28:46,857 INFO L432 NwaCegarLoop]: 3419 mSDtfsCounter, 3657 mSDsluCounter, 9965 mSDsCounter, 0 mSdLazyCounter, 1467 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3657 SdHoareTripleChecker+Valid, 13384 SdHoareTripleChecker+Invalid, 1477 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 1467 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-13 23:28:46,858 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3657 Valid, 13384 Invalid, 1477 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 1467 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-13 23:28:46,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34520 states. [2024-11-13 23:28:48,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34520 to 21861. [2024-11-13 23:28:48,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21861 states, 18211 states have (on average 1.2318928120366812) internal successors, (22434), 18324 states have internal predecessors, (22434), 1942 states have call successors, (1942), 1607 states have call predecessors, (1942), 1706 states have return successors, (2324), 1930 states have call predecessors, (2324), 1942 states have call successors, (2324) [2024-11-13 23:28:48,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21861 states to 21861 states and 26700 transitions. [2024-11-13 23:28:48,887 INFO L78 Accepts]: Start accepts. Automaton has 21861 states and 26700 transitions. Word has length 181 [2024-11-13 23:28:48,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 23:28:48,888 INFO L471 AbstractCegarLoop]: Abstraction has 21861 states and 26700 transitions. [2024-11-13 23:28:48,888 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 states have internal predecessors, (91), 5 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 5 states have call predecessors, (11), 5 states have call successors, (11) [2024-11-13 23:28:48,888 INFO L276 IsEmpty]: Start isEmpty. Operand 21861 states and 26700 transitions. [2024-11-13 23:28:48,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2024-11-13 23:28:48,903 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 23:28:48,903 INFO L215 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 23:28:48,903 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-11-13 23:28:48,903 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 23:28:48,904 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 23:28:48,904 INFO L85 PathProgramCache]: Analyzing trace with hash 2072776347, now seen corresponding path program 1 times [2024-11-13 23:28:48,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-13 23:28:48,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1999665510] [2024-11-13 23:28:48,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:28:48,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 23:28:48,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:28:49,121 INFO L134 CoverageAnalysis]: Checked inductivity of 229 backedges. 15 proven. 53 refuted. 0 times theorem prover too weak. 161 trivial. 0 not checked. [2024-11-13 23:28:49,121 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-13 23:28:49,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1999665510] [2024-11-13 23:28:49,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1999665510] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 23:28:49,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [891826279] [2024-11-13 23:28:49,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:28:49,123 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 23:28:49,123 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbb1a979-9020-49e0-80d1-d5c287a4188a/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-13 23:28:49,125 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbb1a979-9020-49e0-80d1-d5c287a4188a/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 23:28:49,127 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbb1a979-9020-49e0-80d1-d5c287a4188a/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-13 23:28:49,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:28:49,313 INFO L255 TraceCheckSpWp]: Trace formula consists of 782 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-13 23:28:49,317 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 23:28:49,433 INFO L134 CoverageAnalysis]: Checked inductivity of 229 backedges. 113 proven. 0 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2024-11-13 23:28:49,433 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 23:28:49,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [891826279] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 23:28:49,433 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 23:28:49,434 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2024-11-13 23:28:49,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672646664] [2024-11-13 23:28:49,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 23:28:49,434 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-13 23:28:49,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-13 23:28:49,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-13 23:28:49,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-11-13 23:28:49,435 INFO L87 Difference]: Start difference. First operand 21861 states and 26700 transitions. Second operand has 7 states, 6 states have (on average 17.666666666666668) internal successors, (106), 6 states have internal predecessors, (106), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2024-11-13 23:28:52,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 23:28:52,996 INFO L93 Difference]: Finished difference Result 43792 states and 52453 transitions. [2024-11-13 23:28:52,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-13 23:28:52,996 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 17.666666666666668) internal successors, (106), 6 states have internal predecessors, (106), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) Word has length 195 [2024-11-13 23:28:52,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 23:28:53,053 INFO L225 Difference]: With dead ends: 43792 [2024-11-13 23:28:53,054 INFO L226 Difference]: Without dead ends: 23580 [2024-11-13 23:28:53,078 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 193 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-11-13 23:28:53,079 INFO L432 NwaCegarLoop]: 3191 mSDtfsCounter, 95 mSDsluCounter, 12735 mSDsCounter, 0 mSdLazyCounter, 1273 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 15926 SdHoareTripleChecker+Invalid, 1276 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1273 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-13 23:28:53,079 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 15926 Invalid, 1276 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 1273 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-13 23:28:53,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23580 states. [2024-11-13 23:28:55,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23580 to 21147. [2024-11-13 23:28:55,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21147 states, 17652 states have (on average 1.233004758667573) internal successors, (21765), 17745 states have internal predecessors, (21765), 1851 states have call successors, (1851), 1540 states have call predecessors, (1851), 1642 states have return successors, (2227), 1862 states have call predecessors, (2227), 1851 states have call successors, (2227) [2024-11-13 23:28:55,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21147 states to 21147 states and 25843 transitions. [2024-11-13 23:28:55,658 INFO L78 Accepts]: Start accepts. Automaton has 21147 states and 25843 transitions. Word has length 195 [2024-11-13 23:28:55,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 23:28:55,658 INFO L471 AbstractCegarLoop]: Abstraction has 21147 states and 25843 transitions. [2024-11-13 23:28:55,658 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 17.666666666666668) internal successors, (106), 6 states have internal predecessors, (106), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2024-11-13 23:28:55,658 INFO L276 IsEmpty]: Start isEmpty. Operand 21147 states and 25843 transitions. [2024-11-13 23:28:55,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2024-11-13 23:28:55,675 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 23:28:55,675 INFO L215 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 23:28:55,698 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbb1a979-9020-49e0-80d1-d5c287a4188a/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2024-11-13 23:28:55,875 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbb1a979-9020-49e0-80d1-d5c287a4188a/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 23:28:55,876 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 23:28:55,876 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 23:28:55,876 INFO L85 PathProgramCache]: Analyzing trace with hash -1902258803, now seen corresponding path program 1 times [2024-11-13 23:28:55,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-13 23:28:55,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1993233637] [2024-11-13 23:28:55,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:28:55,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 23:28:55,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:28:56,270 INFO L134 CoverageAnalysis]: Checked inductivity of 232 backedges. 36 proven. 59 refuted. 0 times theorem prover too weak. 137 trivial. 0 not checked. [2024-11-13 23:28:56,270 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-13 23:28:56,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1993233637] [2024-11-13 23:28:56,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1993233637] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 23:28:56,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1559312038] [2024-11-13 23:28:56,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:28:56,271 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 23:28:56,271 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbb1a979-9020-49e0-80d1-d5c287a4188a/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-13 23:28:56,273 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbb1a979-9020-49e0-80d1-d5c287a4188a/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 23:28:56,275 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbb1a979-9020-49e0-80d1-d5c287a4188a/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-13 23:28:56,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:28:56,466 INFO L255 TraceCheckSpWp]: Trace formula consists of 788 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-13 23:28:56,471 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 23:28:56,546 INFO L134 CoverageAnalysis]: Checked inductivity of 232 backedges. 116 proven. 0 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2024-11-13 23:28:56,549 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 23:28:56,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1559312038] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 23:28:56,550 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 23:28:56,550 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [12] total 15 [2024-11-13 23:28:56,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906233783] [2024-11-13 23:28:56,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 23:28:56,550 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 23:28:56,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-13 23:28:56,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 23:28:56,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2024-11-13 23:28:56,551 INFO L87 Difference]: Start difference. First operand 21147 states and 25843 transitions. Second operand has 6 states, 5 states have (on average 21.6) internal successors, (108), 5 states have internal predecessors, (108), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2024-11-13 23:28:58,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 23:28:58,614 INFO L93 Difference]: Finished difference Result 37311 states and 44593 transitions. [2024-11-13 23:28:58,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 23:28:58,614 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 21.6) internal successors, (108), 5 states have internal predecessors, (108), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) Word has length 197 [2024-11-13 23:28:58,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 23:28:58,656 INFO L225 Difference]: With dead ends: 37311 [2024-11-13 23:28:58,656 INFO L226 Difference]: Without dead ends: 17813 [2024-11-13 23:28:58,681 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 196 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=225, Unknown=0, NotChecked=0, Total=272 [2024-11-13 23:28:58,681 INFO L432 NwaCegarLoop]: 3218 mSDtfsCounter, 3323 mSDsluCounter, 9730 mSDsCounter, 0 mSdLazyCounter, 1030 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3324 SdHoareTripleChecker+Valid, 12948 SdHoareTripleChecker+Invalid, 1033 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1030 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-13 23:28:58,682 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3324 Valid, 12948 Invalid, 1033 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 1030 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-13 23:28:58,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17813 states. [2024-11-13 23:29:00,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17813 to 16737. [2024-11-13 23:29:00,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16737 states, 13952 states have (on average 1.233299885321101) internal successors, (17207), 14071 states have internal predecessors, (17207), 1442 states have call successors, (1442), 1229 states have call predecessors, (1442), 1341 states have return successors, (1786), 1437 states have call predecessors, (1786), 1442 states have call successors, (1786) [2024-11-13 23:29:00,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16737 states to 16737 states and 20435 transitions. [2024-11-13 23:29:00,770 INFO L78 Accepts]: Start accepts. Automaton has 16737 states and 20435 transitions. Word has length 197 [2024-11-13 23:29:00,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 23:29:00,770 INFO L471 AbstractCegarLoop]: Abstraction has 16737 states and 20435 transitions. [2024-11-13 23:29:00,770 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 21.6) internal successors, (108), 5 states have internal predecessors, (108), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2024-11-13 23:29:00,770 INFO L276 IsEmpty]: Start isEmpty. Operand 16737 states and 20435 transitions. [2024-11-13 23:29:00,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2024-11-13 23:29:00,784 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 23:29:00,784 INFO L215 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 23:29:00,798 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbb1a979-9020-49e0-80d1-d5c287a4188a/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2024-11-13 23:29:00,988 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbb1a979-9020-49e0-80d1-d5c287a4188a/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 23:29:00,989 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 23:29:00,989 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 23:29:00,989 INFO L85 PathProgramCache]: Analyzing trace with hash -491905148, now seen corresponding path program 1 times [2024-11-13 23:29:00,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-13 23:29:00,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941393020] [2024-11-13 23:29:00,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:29:00,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 23:29:01,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:29:01,702 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 42 proven. 75 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2024-11-13 23:29:01,702 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-13 23:29:01,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941393020] [2024-11-13 23:29:01,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1941393020] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 23:29:01,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1841384310] [2024-11-13 23:29:01,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:29:01,703 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 23:29:01,703 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbb1a979-9020-49e0-80d1-d5c287a4188a/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-13 23:29:01,705 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbb1a979-9020-49e0-80d1-d5c287a4188a/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 23:29:01,707 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbb1a979-9020-49e0-80d1-d5c287a4188a/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-11-13 23:29:01,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:29:01,888 INFO L255 TraceCheckSpWp]: Trace formula consists of 787 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-13 23:29:01,891 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 23:29:02,100 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 139 proven. 0 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2024-11-13 23:29:02,100 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 23:29:02,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1841384310] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 23:29:02,101 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 23:29:02,101 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [18] total 20 [2024-11-13 23:29:02,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52603053] [2024-11-13 23:29:02,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 23:29:02,103 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 23:29:02,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-13 23:29:02,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 23:29:02,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=329, Unknown=0, NotChecked=0, Total=380 [2024-11-13 23:29:02,104 INFO L87 Difference]: Start difference. First operand 16737 states and 20435 transitions. Second operand has 6 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 2 states have call successors, (17), 3 states have call predecessors, (17), 4 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-13 23:29:04,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 23:29:04,481 INFO L93 Difference]: Finished difference Result 28504 states and 33711 transitions. [2024-11-13 23:29:04,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-13 23:29:04,481 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 2 states have call successors, (17), 3 states have call predecessors, (17), 4 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 197 [2024-11-13 23:29:04,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 23:29:04,517 INFO L225 Difference]: With dead ends: 28504 [2024-11-13 23:29:04,517 INFO L226 Difference]: Without dead ends: 15630 [2024-11-13 23:29:04,533 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 199 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=433, Unknown=0, NotChecked=0, Total=506 [2024-11-13 23:29:04,533 INFO L432 NwaCegarLoop]: 3123 mSDtfsCounter, 3427 mSDsluCounter, 9310 mSDsCounter, 0 mSdLazyCounter, 1120 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3434 SdHoareTripleChecker+Valid, 12433 SdHoareTripleChecker+Invalid, 1182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 1120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-13 23:29:04,533 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3434 Valid, 12433 Invalid, 1182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 1120 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-13 23:29:04,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15630 states. [2024-11-13 23:29:05,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15630 to 14022. [2024-11-13 23:29:05,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14022 states, 11730 states have (on average 1.252855924978687) internal successors, (14696), 11872 states have internal predecessors, (14696), 1165 states have call successors, (1165), 981 states have call predecessors, (1165), 1125 states have return successors, (1405), 1169 states have call predecessors, (1405), 1165 states have call successors, (1405) [2024-11-13 23:29:05,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14022 states to 14022 states and 17266 transitions. [2024-11-13 23:29:05,806 INFO L78 Accepts]: Start accepts. Automaton has 14022 states and 17266 transitions. Word has length 197 [2024-11-13 23:29:05,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 23:29:05,806 INFO L471 AbstractCegarLoop]: Abstraction has 14022 states and 17266 transitions. [2024-11-13 23:29:05,806 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 2 states have call successors, (17), 3 states have call predecessors, (17), 4 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-13 23:29:05,807 INFO L276 IsEmpty]: Start isEmpty. Operand 14022 states and 17266 transitions. [2024-11-13 23:29:05,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2024-11-13 23:29:05,815 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 23:29:05,815 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 23:29:05,837 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbb1a979-9020-49e0-80d1-d5c287a4188a/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2024-11-13 23:29:06,019 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbb1a979-9020-49e0-80d1-d5c287a4188a/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 23:29:06,020 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 23:29:06,020 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 23:29:06,020 INFO L85 PathProgramCache]: Analyzing trace with hash 162196182, now seen corresponding path program 1 times [2024-11-13 23:29:06,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-13 23:29:06,020 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [693314326] [2024-11-13 23:29:06,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:29:06,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 23:29:06,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:29:06,166 INFO L134 CoverageAnalysis]: Checked inductivity of 331 backedges. 92 proven. 70 refuted. 0 times theorem prover too weak. 169 trivial. 0 not checked. [2024-11-13 23:29:06,167 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-13 23:29:06,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [693314326] [2024-11-13 23:29:06,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [693314326] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 23:29:06,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1694674245] [2024-11-13 23:29:06,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:29:06,167 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 23:29:06,167 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbb1a979-9020-49e0-80d1-d5c287a4188a/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-13 23:29:06,169 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbb1a979-9020-49e0-80d1-d5c287a4188a/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 23:29:06,172 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbb1a979-9020-49e0-80d1-d5c287a4188a/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-11-13 23:29:06,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:29:06,354 INFO L255 TraceCheckSpWp]: Trace formula consists of 814 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-13 23:29:06,357 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 23:29:06,393 INFO L134 CoverageAnalysis]: Checked inductivity of 331 backedges. 69 proven. 0 refuted. 0 times theorem prover too weak. 262 trivial. 0 not checked. [2024-11-13 23:29:06,393 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 23:29:06,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1694674245] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 23:29:06,393 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 23:29:06,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2024-11-13 23:29:06,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476110677] [2024-11-13 23:29:06,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 23:29:06,394 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 23:29:06,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-13 23:29:06,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 23:29:06,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-13 23:29:06,394 INFO L87 Difference]: Start difference. First operand 14022 states and 17266 transitions. Second operand has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (13), 3 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-13 23:29:08,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 23:29:08,125 INFO L93 Difference]: Finished difference Result 27545 states and 32565 transitions. [2024-11-13 23:29:08,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 23:29:08,126 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (13), 3 states have call predecessors, (13), 2 states have call successors, (13) Word has length 218 [2024-11-13 23:29:08,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 23:29:08,160 INFO L225 Difference]: With dead ends: 27545 [2024-11-13 23:29:08,160 INFO L226 Difference]: Without dead ends: 15229 [2024-11-13 23:29:08,176 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 219 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-11-13 23:29:08,177 INFO L432 NwaCegarLoop]: 3246 mSDtfsCounter, 3363 mSDsluCounter, 3342 mSDsCounter, 0 mSdLazyCounter, 527 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3363 SdHoareTripleChecker+Valid, 6588 SdHoareTripleChecker+Invalid, 530 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 527 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-13 23:29:08,177 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3363 Valid, 6588 Invalid, 530 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 527 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-13 23:29:08,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15229 states. [2024-11-13 23:29:09,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15229 to 15200. [2024-11-13 23:29:09,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15200 states, 12704 states have (on average 1.2352015113350125) internal successors, (15692), 12850 states have internal predecessors, (15692), 1273 states have call successors, (1273), 1077 states have call predecessors, (1273), 1221 states have return successors, (1513), 1273 states have call predecessors, (1513), 1273 states have call successors, (1513) [2024-11-13 23:29:09,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15200 states to 15200 states and 18478 transitions. [2024-11-13 23:29:09,983 INFO L78 Accepts]: Start accepts. Automaton has 15200 states and 18478 transitions. Word has length 218 [2024-11-13 23:29:09,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 23:29:09,983 INFO L471 AbstractCegarLoop]: Abstraction has 15200 states and 18478 transitions. [2024-11-13 23:29:09,983 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (13), 3 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-13 23:29:09,984 INFO L276 IsEmpty]: Start isEmpty. Operand 15200 states and 18478 transitions. [2024-11-13 23:29:10,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2024-11-13 23:29:10,000 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 23:29:10,000 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 23:29:10,022 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbb1a979-9020-49e0-80d1-d5c287a4188a/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2024-11-13 23:29:10,201 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbb1a979-9020-49e0-80d1-d5c287a4188a/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-11-13 23:29:10,201 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 23:29:10,201 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 23:29:10,202 INFO L85 PathProgramCache]: Analyzing trace with hash 753254686, now seen corresponding path program 2 times [2024-11-13 23:29:10,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-13 23:29:10,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [823765256] [2024-11-13 23:29:10,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:29:10,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 23:29:10,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:29:10,301 INFO L134 CoverageAnalysis]: Checked inductivity of 335 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 267 trivial. 0 not checked. [2024-11-13 23:29:10,301 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-13 23:29:10,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [823765256] [2024-11-13 23:29:10,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [823765256] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 23:29:10,301 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 23:29:10,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 23:29:10,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849183757] [2024-11-13 23:29:10,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 23:29:10,302 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 23:29:10,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-13 23:29:10,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 23:29:10,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 23:29:10,303 INFO L87 Difference]: Start difference. First operand 15200 states and 18478 transitions. Second operand has 4 states, 3 states have (on average 31.0) internal successors, (93), 4 states have internal predecessors, (93), 3 states have call successors, (12), 1 states have call predecessors, (12), 2 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2024-11-13 23:29:12,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 23:29:12,699 INFO L93 Difference]: Finished difference Result 25714 states and 30298 transitions. [2024-11-13 23:29:12,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 23:29:12,699 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 31.0) internal successors, (93), 4 states have internal predecessors, (93), 3 states have call successors, (12), 1 states have call predecessors, (12), 2 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 219 [2024-11-13 23:29:12,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 23:29:12,735 INFO L225 Difference]: With dead ends: 25714 [2024-11-13 23:29:12,735 INFO L226 Difference]: Without dead ends: 14963 [2024-11-13 23:29:12,748 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 23:29:12,748 INFO L432 NwaCegarLoop]: 3189 mSDtfsCounter, 3395 mSDsluCounter, 3181 mSDsCounter, 0 mSdLazyCounter, 525 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3395 SdHoareTripleChecker+Valid, 6370 SdHoareTripleChecker+Invalid, 530 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 525 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-13 23:29:12,748 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3395 Valid, 6370 Invalid, 530 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 525 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-13 23:29:12,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14963 states. [2024-11-13 23:29:14,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14963 to 13035. [2024-11-13 23:29:14,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13035 states, 10893 states have (on average 1.2504360598549527) internal successors, (13621), 11000 states have internal predecessors, (13621), 1130 states have call successors, (1130), 934 states have call predecessors, (1130), 1010 states have return successors, (1246), 1101 states have call predecessors, (1246), 1130 states have call successors, (1246) [2024-11-13 23:29:14,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13035 states to 13035 states and 15997 transitions. [2024-11-13 23:29:14,058 INFO L78 Accepts]: Start accepts. Automaton has 13035 states and 15997 transitions. Word has length 219 [2024-11-13 23:29:14,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 23:29:14,059 INFO L471 AbstractCegarLoop]: Abstraction has 13035 states and 15997 transitions. [2024-11-13 23:29:14,059 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 31.0) internal successors, (93), 4 states have internal predecessors, (93), 3 states have call successors, (12), 1 states have call predecessors, (12), 2 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2024-11-13 23:29:14,059 INFO L276 IsEmpty]: Start isEmpty. Operand 13035 states and 15997 transitions. [2024-11-13 23:29:14,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2024-11-13 23:29:14,069 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 23:29:14,069 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 23:29:14,069 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-11-13 23:29:14,070 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 23:29:14,070 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 23:29:14,070 INFO L85 PathProgramCache]: Analyzing trace with hash 1198776538, now seen corresponding path program 1 times [2024-11-13 23:29:14,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-13 23:29:14,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1306647411] [2024-11-13 23:29:14,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:29:14,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 23:29:14,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:29:14,278 INFO L134 CoverageAnalysis]: Checked inductivity of 335 backedges. 96 proven. 70 refuted. 0 times theorem prover too weak. 169 trivial. 0 not checked. [2024-11-13 23:29:14,278 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-13 23:29:14,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1306647411] [2024-11-13 23:29:14,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1306647411] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 23:29:14,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [403572320] [2024-11-13 23:29:14,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:29:14,279 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 23:29:14,279 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbb1a979-9020-49e0-80d1-d5c287a4188a/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-13 23:29:14,281 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbb1a979-9020-49e0-80d1-d5c287a4188a/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 23:29:14,283 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbb1a979-9020-49e0-80d1-d5c287a4188a/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-11-13 23:29:14,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:29:14,494 INFO L255 TraceCheckSpWp]: Trace formula consists of 820 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-13 23:29:14,503 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 23:29:14,567 INFO L134 CoverageAnalysis]: Checked inductivity of 335 backedges. 206 proven. 0 refuted. 0 times theorem prover too weak. 129 trivial. 0 not checked. [2024-11-13 23:29:14,567 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 23:29:14,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [403572320] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 23:29:14,568 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 23:29:14,568 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 7 [2024-11-13 23:29:14,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188896198] [2024-11-13 23:29:14,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 23:29:14,568 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 23:29:14,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-13 23:29:14,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 23:29:14,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-13 23:29:14,570 INFO L87 Difference]: Start difference. First operand 13035 states and 15997 transitions. Second operand has 4 states, 4 states have (on average 32.0) internal successors, (128), 4 states have internal predecessors, (128), 3 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2024-11-13 23:29:16,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 23:29:16,088 INFO L93 Difference]: Finished difference Result 17435 states and 20827 transitions. [2024-11-13 23:29:16,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 23:29:16,088 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.0) internal successors, (128), 4 states have internal predecessors, (128), 3 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 220 [2024-11-13 23:29:16,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 23:29:16,116 INFO L225 Difference]: With dead ends: 17435 [2024-11-13 23:29:16,116 INFO L226 Difference]: Without dead ends: 11545 [2024-11-13 23:29:16,125 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 222 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-13 23:29:16,126 INFO L432 NwaCegarLoop]: 3241 mSDtfsCounter, 3345 mSDsluCounter, 3334 mSDsCounter, 0 mSdLazyCounter, 532 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3345 SdHoareTripleChecker+Valid, 6575 SdHoareTripleChecker+Invalid, 535 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 532 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-13 23:29:16,126 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3345 Valid, 6575 Invalid, 535 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 532 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-13 23:29:16,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11545 states. [2024-11-13 23:29:17,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11545 to 11524. [2024-11-13 23:29:17,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11524 states, 9670 states have (on average 1.263081695966908) internal successors, (12214), 9761 states have internal predecessors, (12214), 980 states have call successors, (980), 808 states have call predecessors, (980), 872 states have return successors, (1066), 955 states have call predecessors, (1066), 980 states have call successors, (1066) [2024-11-13 23:29:17,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11524 states to 11524 states and 14260 transitions. [2024-11-13 23:29:17,064 INFO L78 Accepts]: Start accepts. Automaton has 11524 states and 14260 transitions. Word has length 220 [2024-11-13 23:29:17,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 23:29:17,065 INFO L471 AbstractCegarLoop]: Abstraction has 11524 states and 14260 transitions. [2024-11-13 23:29:17,065 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.0) internal successors, (128), 4 states have internal predecessors, (128), 3 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2024-11-13 23:29:17,065 INFO L276 IsEmpty]: Start isEmpty. Operand 11524 states and 14260 transitions. [2024-11-13 23:29:17,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2024-11-13 23:29:17,071 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 23:29:17,071 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 23:29:17,084 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbb1a979-9020-49e0-80d1-d5c287a4188a/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2024-11-13 23:29:17,271 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbb1a979-9020-49e0-80d1-d5c287a4188a/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-11-13 23:29:17,272 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 23:29:17,272 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 23:29:17,272 INFO L85 PathProgramCache]: Analyzing trace with hash 1215231746, now seen corresponding path program 2 times [2024-11-13 23:29:17,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-13 23:29:17,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332115985] [2024-11-13 23:29:17,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:29:17,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 23:29:17,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:29:17,709 INFO L134 CoverageAnalysis]: Checked inductivity of 335 backedges. 145 proven. 78 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-11-13 23:29:17,709 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-13 23:29:17,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332115985] [2024-11-13 23:29:17,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1332115985] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 23:29:17,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1111576262] [2024-11-13 23:29:17,710 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-13 23:29:17,710 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 23:29:17,710 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbb1a979-9020-49e0-80d1-d5c287a4188a/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-13 23:29:17,712 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbb1a979-9020-49e0-80d1-d5c287a4188a/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 23:29:17,714 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbb1a979-9020-49e0-80d1-d5c287a4188a/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-11-13 23:29:17,853 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-13 23:29:17,853 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 23:29:17,855 INFO L255 TraceCheckSpWp]: Trace formula consists of 444 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-13 23:29:17,859 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 23:29:17,895 INFO L134 CoverageAnalysis]: Checked inductivity of 335 backedges. 208 proven. 0 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2024-11-13 23:29:17,895 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 23:29:17,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1111576262] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 23:29:17,896 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 23:29:17,896 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 12 [2024-11-13 23:29:17,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737167117] [2024-11-13 23:29:17,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 23:29:17,897 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 23:29:17,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-13 23:29:17,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 23:29:17,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-11-13 23:29:17,897 INFO L87 Difference]: Start difference. First operand 11524 states and 14260 transitions. Second operand has 4 states, 4 states have (on average 29.5) internal successors, (118), 4 states have internal predecessors, (118), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) [2024-11-13 23:29:19,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 23:29:19,614 INFO L93 Difference]: Finished difference Result 23678 states and 27804 transitions. [2024-11-13 23:29:19,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 23:29:19,615 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.5) internal successors, (118), 4 states have internal predecessors, (118), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) Word has length 220 [2024-11-13 23:29:19,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 23:29:19,648 INFO L225 Difference]: With dead ends: 23678 [2024-11-13 23:29:19,648 INFO L226 Difference]: Without dead ends: 13860 [2024-11-13 23:29:19,656 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 239 GetRequests, 228 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-11-13 23:29:19,656 INFO L432 NwaCegarLoop]: 3246 mSDtfsCounter, 3367 mSDsluCounter, 3342 mSDsCounter, 0 mSdLazyCounter, 527 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3367 SdHoareTripleChecker+Valid, 6588 SdHoareTripleChecker+Invalid, 530 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 527 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-13 23:29:19,657 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3367 Valid, 6588 Invalid, 530 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 527 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-13 23:29:19,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13860 states. [2024-11-13 23:29:20,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13860 to 13844. [2024-11-13 23:29:20,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13844 states, 11546 states have (on average 1.2328945089208383) internal successors, (14235), 11649 states have internal predecessors, (14235), 1220 states have call successors, (1220), 1012 states have call predecessors, (1220), 1076 states have return successors, (1306), 1183 states have call predecessors, (1306), 1220 states have call successors, (1306) [2024-11-13 23:29:20,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13844 states to 13844 states and 16761 transitions. [2024-11-13 23:29:20,899 INFO L78 Accepts]: Start accepts. Automaton has 13844 states and 16761 transitions. Word has length 220 [2024-11-13 23:29:20,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 23:29:20,899 INFO L471 AbstractCegarLoop]: Abstraction has 13844 states and 16761 transitions. [2024-11-13 23:29:20,899 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.5) internal successors, (118), 4 states have internal predecessors, (118), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) [2024-11-13 23:29:20,899 INFO L276 IsEmpty]: Start isEmpty. Operand 13844 states and 16761 transitions. [2024-11-13 23:29:20,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2024-11-13 23:29:20,908 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 23:29:20,908 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 23:29:20,921 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbb1a979-9020-49e0-80d1-d5c287a4188a/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2024-11-13 23:29:21,108 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbb1a979-9020-49e0-80d1-d5c287a4188a/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 23:29:21,109 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 23:29:21,109 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 23:29:21,109 INFO L85 PathProgramCache]: Analyzing trace with hash -1070430978, now seen corresponding path program 1 times [2024-11-13 23:29:21,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-13 23:29:21,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30758535] [2024-11-13 23:29:21,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:29:21,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 23:29:21,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:29:21,490 INFO L134 CoverageAnalysis]: Checked inductivity of 339 backedges. 149 proven. 78 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-11-13 23:29:21,490 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-13 23:29:21,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [30758535] [2024-11-13 23:29:21,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [30758535] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 23:29:21,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [671798075] [2024-11-13 23:29:21,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:29:21,491 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 23:29:21,491 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbb1a979-9020-49e0-80d1-d5c287a4188a/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-13 23:29:21,493 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbb1a979-9020-49e0-80d1-d5c287a4188a/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 23:29:21,495 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbb1a979-9020-49e0-80d1-d5c287a4188a/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-11-13 23:29:21,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:29:21,666 INFO L255 TraceCheckSpWp]: Trace formula consists of 826 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-13 23:29:21,668 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 23:29:21,747 INFO L134 CoverageAnalysis]: Checked inductivity of 339 backedges. 263 proven. 0 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2024-11-13 23:29:21,747 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 23:29:21,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [671798075] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 23:29:21,747 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 23:29:21,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 13 [2024-11-13 23:29:21,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206848097] [2024-11-13 23:29:21,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 23:29:21,748 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 23:29:21,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-13 23:29:21,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 23:29:21,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2024-11-13 23:29:21,749 INFO L87 Difference]: Start difference. First operand 13844 states and 16761 transitions. Second operand has 5 states, 5 states have (on average 28.4) internal successors, (142), 5 states have internal predecessors, (142), 4 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) [2024-11-13 23:29:23,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 23:29:23,103 INFO L93 Difference]: Finished difference Result 18100 states and 21499 transitions. [2024-11-13 23:29:23,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-13 23:29:23,104 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 28.4) internal successors, (142), 5 states have internal predecessors, (142), 4 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) Word has length 222 [2024-11-13 23:29:23,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 23:29:23,126 INFO L225 Difference]: With dead ends: 18100 [2024-11-13 23:29:23,126 INFO L226 Difference]: Without dead ends: 1642 [2024-11-13 23:29:23,141 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 243 GetRequests, 230 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2024-11-13 23:29:23,141 INFO L432 NwaCegarLoop]: 3201 mSDtfsCounter, 84 mSDsluCounter, 9434 mSDsCounter, 0 mSdLazyCounter, 1063 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 12635 SdHoareTripleChecker+Invalid, 1090 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 1063 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-13 23:29:23,142 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 12635 Invalid, 1090 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 1063 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-13 23:29:23,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1642 states. [2024-11-13 23:29:23,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1642 to 1642. [2024-11-13 23:29:23,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1642 states, 1641 states have (on average 1.9914686166971358) internal successors, (3268), 1641 states have internal predecessors, (3268), 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) [2024-11-13 23:29:23,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1642 states to 1642 states and 3268 transitions. [2024-11-13 23:29:23,176 INFO L78 Accepts]: Start accepts. Automaton has 1642 states and 3268 transitions. Word has length 222 [2024-11-13 23:29:23,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 23:29:23,176 INFO L471 AbstractCegarLoop]: Abstraction has 1642 states and 3268 transitions. [2024-11-13 23:29:23,176 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 28.4) internal successors, (142), 5 states have internal predecessors, (142), 4 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) [2024-11-13 23:29:23,176 INFO L276 IsEmpty]: Start isEmpty. Operand 1642 states and 3268 transitions. [2024-11-13 23:29:23,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1633 [2024-11-13 23:29:23,187 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 23:29:23,187 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 23:29:23,201 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbb1a979-9020-49e0-80d1-d5c287a4188a/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2024-11-13 23:29:23,387 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbb1a979-9020-49e0-80d1-d5c287a4188a/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2024-11-13 23:29:23,388 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 23:29:23,388 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 23:29:23,388 INFO L85 PathProgramCache]: Analyzing trace with hash -2030784457, now seen corresponding path program 1 times [2024-11-13 23:29:23,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-13 23:29:23,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085528793] [2024-11-13 23:29:23,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:29:23,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 23:29:23,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:29:24,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 23:29:24,673 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-13 23:29:24,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2085528793] [2024-11-13 23:29:24,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2085528793] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 23:29:24,673 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 23:29:24,673 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 23:29:24,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363894794] [2024-11-13 23:29:24,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 23:29:24,674 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 23:29:24,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-13 23:29:24,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 23:29:24,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 23:29:24,677 INFO L87 Difference]: Start difference. First operand 1642 states and 3268 transitions. Second operand has 3 states, 3 states have (on average 544.0) internal successors, (1632), 2 states have internal predecessors, (1632), 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) [2024-11-13 23:29:31,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 23:29:31,620 INFO L93 Difference]: Finished difference Result 4920 states and 9799 transitions. [2024-11-13 23:29:31,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 23:29:31,620 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 544.0) internal successors, (1632), 2 states have internal predecessors, (1632), 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 1632 [2024-11-13 23:29:31,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 23:29:31,645 INFO L225 Difference]: With dead ends: 4920 [2024-11-13 23:29:31,645 INFO L226 Difference]: Without dead ends: 3280 [2024-11-13 23:29:31,649 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 [2024-11-13 23:29:31,650 INFO L432 NwaCegarLoop]: 528 mSDtfsCounter, 219 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 4739 mSolverCounterSat, 2448 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 219 SdHoareTripleChecker+Valid, 539 SdHoareTripleChecker+Invalid, 7187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2448 IncrementalHoareTripleChecker+Valid, 4739 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.8s IncrementalHoareTripleChecker+Time [2024-11-13 23:29:31,650 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [219 Valid, 539 Invalid, 7187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2448 Valid, 4739 Invalid, 0 Unknown, 0 Unchecked, 6.8s Time] [2024-11-13 23:29:31,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3280 states. [2024-11-13 23:29:31,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3280 to 3280. [2024-11-13 23:29:31,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3280 states, 3279 states have (on average 1.8109179627935346) internal successors, (5938), 3279 states have internal predecessors, (5938), 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) [2024-11-13 23:29:31,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3280 states to 3280 states and 5938 transitions. [2024-11-13 23:29:31,719 INFO L78 Accepts]: Start accepts. Automaton has 3280 states and 5938 transitions. Word has length 1632 [2024-11-13 23:29:31,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 23:29:31,722 INFO L471 AbstractCegarLoop]: Abstraction has 3280 states and 5938 transitions. [2024-11-13 23:29:31,723 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 544.0) internal successors, (1632), 2 states have internal predecessors, (1632), 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) [2024-11-13 23:29:31,723 INFO L276 IsEmpty]: Start isEmpty. Operand 3280 states and 5938 transitions. [2024-11-13 23:29:31,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1642 [2024-11-13 23:29:31,742 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 23:29:31,743 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 23:29:31,743 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-11-13 23:29:31,743 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 23:29:31,744 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 23:29:31,744 INFO L85 PathProgramCache]: Analyzing trace with hash 236632758, now seen corresponding path program 1 times [2024-11-13 23:29:31,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-13 23:29:31,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [507283652] [2024-11-13 23:29:31,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:29:31,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 23:29:31,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:29:32,602 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 23:29:32,602 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-13 23:29:32,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [507283652] [2024-11-13 23:29:32,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [507283652] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 23:29:32,603 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 23:29:32,603 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 23:29:32,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123981000] [2024-11-13 23:29:32,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 23:29:32,604 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 23:29:32,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-13 23:29:32,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 23:29:32,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 23:29:32,607 INFO L87 Difference]: Start difference. First operand 3280 states and 5938 transitions. Second operand has 3 states, 3 states have (on average 547.0) internal successors, (1641), 2 states have internal predecessors, (1641), 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) [2024-11-13 23:29:39,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 23:29:39,023 INFO L93 Difference]: Finished difference Result 9834 states and 17809 transitions. [2024-11-13 23:29:39,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 23:29:39,024 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 547.0) internal successors, (1641), 2 states have internal predecessors, (1641), 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 1641 [2024-11-13 23:29:39,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 23:29:39,044 INFO L225 Difference]: With dead ends: 9834 [2024-11-13 23:29:39,044 INFO L226 Difference]: Without dead ends: 6556 [2024-11-13 23:29:39,047 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 [2024-11-13 23:29:39,048 INFO L432 NwaCegarLoop]: 504 mSDtfsCounter, 1714 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 5421 mSolverCounterSat, 1488 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1714 SdHoareTripleChecker+Valid, 514 SdHoareTripleChecker+Invalid, 6909 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1488 IncrementalHoareTripleChecker+Valid, 5421 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2024-11-13 23:29:39,048 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1714 Valid, 514 Invalid, 6909 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1488 Valid, 5421 Invalid, 0 Unknown, 0 Unchecked, 6.3s Time] [2024-11-13 23:29:39,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6556 states. [2024-11-13 23:29:39,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6556 to 6556. [2024-11-13 23:29:39,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6556 states, 6555 states have (on average 1.6410373760488177) internal successors, (10757), 6555 states have internal predecessors, (10757), 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) [2024-11-13 23:29:39,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6556 states to 6556 states and 10757 transitions. [2024-11-13 23:29:39,127 INFO L78 Accepts]: Start accepts. Automaton has 6556 states and 10757 transitions. Word has length 1641 [2024-11-13 23:29:39,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 23:29:39,127 INFO L471 AbstractCegarLoop]: Abstraction has 6556 states and 10757 transitions. [2024-11-13 23:29:39,128 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 547.0) internal successors, (1641), 2 states have internal predecessors, (1641), 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) [2024-11-13 23:29:39,128 INFO L276 IsEmpty]: Start isEmpty. Operand 6556 states and 10757 transitions. [2024-11-13 23:29:39,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1647 [2024-11-13 23:29:39,146 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 23:29:39,146 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 23:29:39,146 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-11-13 23:29:39,146 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 23:29:39,146 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 23:29:39,147 INFO L85 PathProgramCache]: Analyzing trace with hash 1937209528, now seen corresponding path program 1 times [2024-11-13 23:29:39,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-13 23:29:39,147 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [193100887] [2024-11-13 23:29:39,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:29:39,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 23:29:39,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:29:40,099 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-13 23:29:40,099 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-13 23:29:40,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [193100887] [2024-11-13 23:29:40,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [193100887] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 23:29:40,100 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 23:29:40,100 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 23:29:40,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213681720] [2024-11-13 23:29:40,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 23:29:40,101 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 23:29:40,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-13 23:29:40,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 23:29:40,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 23:29:40,103 INFO L87 Difference]: Start difference. First operand 6556 states and 10757 transitions. Second operand has 3 states, 3 states have (on average 546.0) internal successors, (1638), 2 states have internal predecessors, (1638), 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) [2024-11-13 23:29:46,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 23:29:46,725 INFO L93 Difference]: Finished difference Result 19662 states and 32266 transitions. [2024-11-13 23:29:46,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 23:29:46,726 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 546.0) internal successors, (1638), 2 states have internal predecessors, (1638), 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 1646 [2024-11-13 23:29:46,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 23:29:46,751 INFO L225 Difference]: With dead ends: 19662 [2024-11-13 23:29:46,751 INFO L226 Difference]: Without dead ends: 13108 [2024-11-13 23:29:46,757 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 [2024-11-13 23:29:46,757 INFO L432 NwaCegarLoop]: 867 mSDtfsCounter, 2103 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 4589 mSolverCounterSat, 2021 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2103 SdHoareTripleChecker+Valid, 877 SdHoareTripleChecker+Invalid, 6610 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2021 IncrementalHoareTripleChecker+Valid, 4589 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time [2024-11-13 23:29:46,757 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2103 Valid, 877 Invalid, 6610 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2021 Valid, 4589 Invalid, 0 Unknown, 0 Unchecked, 6.4s Time] [2024-11-13 23:29:46,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13108 states. [2024-11-13 23:29:46,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13108 to 13108. [2024-11-13 23:29:46,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13108 states, 13107 states have (on average 1.4626535439078354) internal successors, (19171), 13107 states have internal predecessors, (19171), 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) [2024-11-13 23:29:46,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13108 states to 13108 states and 19171 transitions. [2024-11-13 23:29:46,872 INFO L78 Accepts]: Start accepts. Automaton has 13108 states and 19171 transitions. Word has length 1646 [2024-11-13 23:29:46,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 23:29:46,872 INFO L471 AbstractCegarLoop]: Abstraction has 13108 states and 19171 transitions. [2024-11-13 23:29:46,872 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 546.0) internal successors, (1638), 2 states have internal predecessors, (1638), 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) [2024-11-13 23:29:46,872 INFO L276 IsEmpty]: Start isEmpty. Operand 13108 states and 19171 transitions. [2024-11-13 23:29:46,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1660 [2024-11-13 23:29:46,888 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 23:29:46,888 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 23:29:46,888 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-11-13 23:29:46,888 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 23:29:46,889 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 23:29:46,889 INFO L85 PathProgramCache]: Analyzing trace with hash -435109788, now seen corresponding path program 1 times [2024-11-13 23:29:46,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-13 23:29:46,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [686119960] [2024-11-13 23:29:46,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:29:46,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 23:29:47,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:29:47,755 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 23:29:47,755 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-13 23:29:47,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [686119960] [2024-11-13 23:29:47,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [686119960] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 23:29:47,755 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 23:29:47,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 23:29:47,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596369470] [2024-11-13 23:29:47,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 23:29:47,756 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 23:29:47,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-13 23:29:47,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 23:29:47,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 23:29:47,758 INFO L87 Difference]: Start difference. First operand 13108 states and 19171 transitions. Second operand has 3 states, 3 states have (on average 553.0) internal successors, (1659), 3 states have internal predecessors, (1659), 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) [2024-11-13 23:29:54,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 23:29:54,777 INFO L93 Difference]: Finished difference Result 37680 states and 55161 transitions. [2024-11-13 23:29:54,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 23:29:54,777 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 553.0) internal successors, (1659), 3 states have internal predecessors, (1659), 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 1659 [2024-11-13 23:29:54,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 23:29:54,817 INFO L225 Difference]: With dead ends: 37680 [2024-11-13 23:29:54,817 INFO L226 Difference]: Without dead ends: 24574 [2024-11-13 23:29:54,828 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 23:29:54,829 INFO L432 NwaCegarLoop]: 2998 mSDtfsCounter, 1669 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 4766 mSolverCounterSat, 2113 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1669 SdHoareTripleChecker+Valid, 3010 SdHoareTripleChecker+Invalid, 6879 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2113 IncrementalHoareTripleChecker+Valid, 4766 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time [2024-11-13 23:29:54,829 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1669 Valid, 3010 Invalid, 6879 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2113 Valid, 4766 Invalid, 0 Unknown, 0 Unchecked, 6.7s Time] [2024-11-13 23:29:54,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24574 states. [2024-11-13 23:29:54,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24574 to 24574. [2024-11-13 23:29:55,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24574 states, 24573 states have (on average 1.3219794082936556) internal successors, (32485), 24573 states have internal predecessors, (32485), 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) [2024-11-13 23:29:55,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24574 states to 24574 states and 32485 transitions. [2024-11-13 23:29:55,039 INFO L78 Accepts]: Start accepts. Automaton has 24574 states and 32485 transitions. Word has length 1659 [2024-11-13 23:29:55,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 23:29:55,040 INFO L471 AbstractCegarLoop]: Abstraction has 24574 states and 32485 transitions. [2024-11-13 23:29:55,040 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 553.0) internal successors, (1659), 3 states have internal predecessors, (1659), 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) [2024-11-13 23:29:55,040 INFO L276 IsEmpty]: Start isEmpty. Operand 24574 states and 32485 transitions. [2024-11-13 23:29:55,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1670 [2024-11-13 23:29:55,061 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 23:29:55,062 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 23:29:55,062 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-11-13 23:29:55,062 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 23:29:55,062 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 23:29:55,062 INFO L85 PathProgramCache]: Analyzing trace with hash -1165400713, now seen corresponding path program 1 times [2024-11-13 23:29:55,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-13 23:29:55,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799163926] [2024-11-13 23:29:55,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:29:55,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 23:29:55,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:29:55,769 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 23:29:55,769 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-13 23:29:55,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1799163926] [2024-11-13 23:29:55,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1799163926] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 23:29:55,769 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 23:29:55,770 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 23:29:55,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364107081] [2024-11-13 23:29:55,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 23:29:55,771 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 23:29:55,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-13 23:29:55,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 23:29:55,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 23:29:55,773 INFO L87 Difference]: Start difference. First operand 24574 states and 32485 transitions. Second operand has 3 states, 3 states have (on average 556.3333333333334) internal successors, (1669), 2 states have internal predecessors, (1669), 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) [2024-11-13 23:30:02,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 23:30:02,747 INFO L93 Difference]: Finished difference Result 70440 states and 92913 transitions. [2024-11-13 23:30:02,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 23:30:02,748 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 556.3333333333334) internal successors, (1669), 2 states have internal predecessors, (1669), 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 1669 [2024-11-13 23:30:02,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 23:30:02,809 INFO L225 Difference]: With dead ends: 70440 [2024-11-13 23:30:02,809 INFO L226 Difference]: Without dead ends: 45868 [2024-11-13 23:30:02,827 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 [2024-11-13 23:30:02,828 INFO L432 NwaCegarLoop]: 1101 mSDtfsCounter, 1909 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 4392 mSolverCounterSat, 2270 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1909 SdHoareTripleChecker+Valid, 1111 SdHoareTripleChecker+Invalid, 6662 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2270 IncrementalHoareTripleChecker+Valid, 4392 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.6s IncrementalHoareTripleChecker+Time [2024-11-13 23:30:02,828 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1909 Valid, 1111 Invalid, 6662 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2270 Valid, 4392 Invalid, 0 Unknown, 0 Unchecked, 6.6s Time] [2024-11-13 23:30:02,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45868 states. [2024-11-13 23:30:03,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45868 to 45868. [2024-11-13 23:30:03,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45868 states, 45867 states have (on average 1.229336996097412) internal successors, (56386), 45867 states have internal predecessors, (56386), 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) [2024-11-13 23:30:03,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45868 states to 45868 states and 56386 transitions. [2024-11-13 23:30:03,221 INFO L78 Accepts]: Start accepts. Automaton has 45868 states and 56386 transitions. Word has length 1669 [2024-11-13 23:30:03,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 23:30:03,221 INFO L471 AbstractCegarLoop]: Abstraction has 45868 states and 56386 transitions. [2024-11-13 23:30:03,222 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 556.3333333333334) internal successors, (1669), 2 states have internal predecessors, (1669), 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) [2024-11-13 23:30:03,222 INFO L276 IsEmpty]: Start isEmpty. Operand 45868 states and 56386 transitions. [2024-11-13 23:30:03,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1691 [2024-11-13 23:30:03,253 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 23:30:03,254 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 23:30:03,254 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-11-13 23:30:03,254 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 23:30:03,254 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 23:30:03,255 INFO L85 PathProgramCache]: Analyzing trace with hash -658732650, now seen corresponding path program 1 times [2024-11-13 23:30:03,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-13 23:30:03,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380253506] [2024-11-13 23:30:03,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:30:03,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 23:30:03,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:30:03,907 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-13 23:30:03,907 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-13 23:30:03,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [380253506] [2024-11-13 23:30:03,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [380253506] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 23:30:03,907 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 23:30:03,907 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 23:30:03,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383074815] [2024-11-13 23:30:03,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 23:30:03,909 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 23:30:03,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-13 23:30:03,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 23:30:03,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 23:30:03,911 INFO L87 Difference]: Start difference. First operand 45868 states and 56386 transitions. Second operand has 3 states, 3 states have (on average 558.0) internal successors, (1674), 2 states have internal predecessors, (1674), 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) [2024-11-13 23:30:11,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 23:30:11,064 INFO L93 Difference]: Finished difference Result 114666 states and 139581 transitions. [2024-11-13 23:30:11,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 23:30:11,065 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 558.0) internal successors, (1674), 2 states have internal predecessors, (1674), 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 1690 [2024-11-13 23:30:11,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 23:30:11,131 INFO L225 Difference]: With dead ends: 114666 [2024-11-13 23:30:11,132 INFO L226 Difference]: Without dead ends: 68800 [2024-11-13 23:30:11,149 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 [2024-11-13 23:30:11,149 INFO L432 NwaCegarLoop]: 320 mSDtfsCounter, 2754 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 4651 mSolverCounterSat, 1848 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2754 SdHoareTripleChecker+Valid, 330 SdHoareTripleChecker+Invalid, 6499 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1848 IncrementalHoareTripleChecker+Valid, 4651 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time [2024-11-13 23:30:11,150 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2754 Valid, 330 Invalid, 6499 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1848 Valid, 4651 Invalid, 0 Unknown, 0 Unchecked, 6.7s Time] [2024-11-13 23:30:11,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68800 states. [2024-11-13 23:30:11,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68800 to 63886. [2024-11-13 23:30:11,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63886 states, 63885 states have (on average 1.163669092901307) internal successors, (74341), 63885 states have internal predecessors, (74341), 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) [2024-11-13 23:30:11,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63886 states to 63886 states and 74341 transitions. [2024-11-13 23:30:11,677 INFO L78 Accepts]: Start accepts. Automaton has 63886 states and 74341 transitions. Word has length 1690 [2024-11-13 23:30:11,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 23:30:11,678 INFO L471 AbstractCegarLoop]: Abstraction has 63886 states and 74341 transitions. [2024-11-13 23:30:11,678 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 558.0) internal successors, (1674), 2 states have internal predecessors, (1674), 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) [2024-11-13 23:30:11,678 INFO L276 IsEmpty]: Start isEmpty. Operand 63886 states and 74341 transitions. [2024-11-13 23:30:11,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1742 [2024-11-13 23:30:11,712 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 23:30:11,713 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 23:30:11,713 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-11-13 23:30:11,713 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 23:30:11,713 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 23:30:11,714 INFO L85 PathProgramCache]: Analyzing trace with hash -1243384565, now seen corresponding path program 1 times [2024-11-13 23:30:11,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-13 23:30:11,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546329838] [2024-11-13 23:30:11,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:30:11,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 23:30:11,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:30:12,986 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2024-11-13 23:30:12,986 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-13 23:30:12,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1546329838] [2024-11-13 23:30:12,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1546329838] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 23:30:12,986 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 23:30:12,987 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 23:30:12,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212492587] [2024-11-13 23:30:12,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 23:30:12,988 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 23:30:12,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-13 23:30:12,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 23:30:12,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 23:30:12,990 INFO L87 Difference]: Start difference. First operand 63886 states and 74341 transitions. Second operand has 3 states, 3 states have (on average 544.6666666666666) internal successors, (1634), 2 states have internal predecessors, (1634), 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) [2024-11-13 23:30:20,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 23:30:20,460 INFO L93 Difference]: Finished difference Result 155616 states and 181278 transitions. [2024-11-13 23:30:20,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 23:30:20,461 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 544.6666666666666) internal successors, (1634), 2 states have internal predecessors, (1634), 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 1741 [2024-11-13 23:30:20,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 23:30:20,584 INFO L225 Difference]: With dead ends: 155616 [2024-11-13 23:30:20,584 INFO L226 Difference]: Without dead ends: 91732 [2024-11-13 23:30:20,612 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 [2024-11-13 23:30:20,613 INFO L432 NwaCegarLoop]: 1256 mSDtfsCounter, 42 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 5733 mSolverCounterSat, 1308 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 1267 SdHoareTripleChecker+Invalid, 7041 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1308 IncrementalHoareTripleChecker+Valid, 5733 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time [2024-11-13 23:30:20,613 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 1267 Invalid, 7041 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1308 Valid, 5733 Invalid, 0 Unknown, 0 Unchecked, 6.7s Time] [2024-11-13 23:30:20,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91732 states. [2024-11-13 23:30:21,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91732 to 90094. [2024-11-13 23:30:21,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90094 states, 90093 states have (on average 1.1384347285582677) internal successors, (102565), 90093 states have internal predecessors, (102565), 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) [2024-11-13 23:30:21,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90094 states to 90094 states and 102565 transitions. [2024-11-13 23:30:21,381 INFO L78 Accepts]: Start accepts. Automaton has 90094 states and 102565 transitions. Word has length 1741 [2024-11-13 23:30:21,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 23:30:21,383 INFO L471 AbstractCegarLoop]: Abstraction has 90094 states and 102565 transitions. [2024-11-13 23:30:21,383 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 544.6666666666666) internal successors, (1634), 2 states have internal predecessors, (1634), 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) [2024-11-13 23:30:21,383 INFO L276 IsEmpty]: Start isEmpty. Operand 90094 states and 102565 transitions. [2024-11-13 23:30:21,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1970 [2024-11-13 23:30:21,450 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 23:30:21,450 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 23:30:21,451 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-11-13 23:30:21,451 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 23:30:21,451 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 23:30:21,451 INFO L85 PathProgramCache]: Analyzing trace with hash -493913748, now seen corresponding path program 1 times [2024-11-13 23:30:21,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-13 23:30:21,452 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [376578328] [2024-11-13 23:30:21,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:30:21,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 23:30:21,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:30:22,615 INFO L134 CoverageAnalysis]: Checked inductivity of 505 backedges. 321 proven. 0 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2024-11-13 23:30:22,616 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-13 23:30:22,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [376578328] [2024-11-13 23:30:22,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [376578328] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 23:30:22,616 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 23:30:22,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 23:30:22,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176656351] [2024-11-13 23:30:22,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 23:30:22,618 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 23:30:22,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-13 23:30:22,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 23:30:22,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 23:30:22,620 INFO L87 Difference]: Start difference. First operand 90094 states and 102565 transitions. Second operand has 3 states, 3 states have (on average 595.3333333333334) internal successors, (1786), 3 states have internal predecessors, (1786), 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) [2024-11-13 23:30:29,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 23:30:29,528 INFO L93 Difference]: Finished difference Result 208032 states and 236154 transitions. [2024-11-13 23:30:29,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 23:30:29,529 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 595.3333333333334) internal successors, (1786), 3 states have internal predecessors, (1786), 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 1969 [2024-11-13 23:30:29,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 23:30:29,647 INFO L225 Difference]: With dead ends: 208032 [2024-11-13 23:30:29,647 INFO L226 Difference]: Without dead ends: 114664 [2024-11-13 23:30:29,703 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 23:30:29,703 INFO L432 NwaCegarLoop]: 3039 mSDtfsCounter, 1504 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 5512 mSolverCounterSat, 891 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1504 SdHoareTripleChecker+Valid, 3051 SdHoareTripleChecker+Invalid, 6403 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 891 IncrementalHoareTripleChecker+Valid, 5512 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2024-11-13 23:30:29,703 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1504 Valid, 3051 Invalid, 6403 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [891 Valid, 5512 Invalid, 0 Unknown, 0 Unchecked, 6.2s Time] [2024-11-13 23:30:29,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114664 states. [2024-11-13 23:30:30,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114664 to 114664. [2024-11-13 23:30:30,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114664 states, 114663 states have (on average 1.1148408815398168) internal successors, (127831), 114663 states have internal predecessors, (127831), 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) [2024-11-13 23:30:30,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114664 states to 114664 states and 127831 transitions. [2024-11-13 23:30:30,639 INFO L78 Accepts]: Start accepts. Automaton has 114664 states and 127831 transitions. Word has length 1969 [2024-11-13 23:30:30,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 23:30:30,639 INFO L471 AbstractCegarLoop]: Abstraction has 114664 states and 127831 transitions. [2024-11-13 23:30:30,639 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 595.3333333333334) internal successors, (1786), 3 states have internal predecessors, (1786), 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) [2024-11-13 23:30:30,640 INFO L276 IsEmpty]: Start isEmpty. Operand 114664 states and 127831 transitions. [2024-11-13 23:30:30,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2003 [2024-11-13 23:30:30,971 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 23:30:30,972 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 23:30:30,972 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-11-13 23:30:30,973 INFO L396 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 23:30:30,973 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 23:30:30,974 INFO L85 PathProgramCache]: Analyzing trace with hash -1870753363, now seen corresponding path program 1 times [2024-11-13 23:30:30,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-13 23:30:30,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1235827233] [2024-11-13 23:30:30,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:30:30,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 23:30:31,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:30:33,246 INFO L134 CoverageAnalysis]: Checked inductivity of 795 backedges. 641 proven. 0 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2024-11-13 23:30:33,246 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-13 23:30:33,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1235827233] [2024-11-13 23:30:33,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1235827233] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 23:30:33,246 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 23:30:33,246 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 23:30:33,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156823662] [2024-11-13 23:30:33,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 23:30:33,247 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 23:30:33,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-13 23:30:33,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 23:30:33,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 23:30:33,249 INFO L87 Difference]: Start difference. First operand 114664 states and 127831 transitions. Second operand has 3 states, 3 states have (on average 616.6666666666666) internal successors, (1850), 3 states have internal predecessors, (1850), 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) [2024-11-13 23:30:41,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 23:30:41,017 INFO L93 Difference]: Finished difference Result 286656 states and 320468 transitions. [2024-11-13 23:30:41,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 23:30:41,018 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 616.6666666666666) internal successors, (1850), 3 states have internal predecessors, (1850), 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 2002 [2024-11-13 23:30:41,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 23:30:41,186 INFO L225 Difference]: With dead ends: 286656 [2024-11-13 23:30:41,186 INFO L226 Difference]: Without dead ends: 171994 [2024-11-13 23:30:41,252 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 23:30:41,252 INFO L432 NwaCegarLoop]: 2661 mSDtfsCounter, 1541 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 4908 mSolverCounterSat, 2065 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1541 SdHoareTripleChecker+Valid, 2673 SdHoareTripleChecker+Invalid, 6973 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2065 IncrementalHoareTripleChecker+Valid, 4908 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.8s IncrementalHoareTripleChecker+Time [2024-11-13 23:30:41,252 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1541 Valid, 2673 Invalid, 6973 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2065 Valid, 4908 Invalid, 0 Unknown, 0 Unchecked, 6.8s Time] [2024-11-13 23:30:41,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171994 states. [2024-11-13 23:30:42,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171994 to 162166. [2024-11-13 23:30:42,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162166 states, 162165 states have (on average 1.1068479634939723) internal successors, (179492), 162165 states have internal predecessors, (179492), 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) [2024-11-13 23:30:42,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162166 states to 162166 states and 179492 transitions. [2024-11-13 23:30:42,830 INFO L78 Accepts]: Start accepts. Automaton has 162166 states and 179492 transitions. Word has length 2002 [2024-11-13 23:30:42,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 23:30:42,830 INFO L471 AbstractCegarLoop]: Abstraction has 162166 states and 179492 transitions. [2024-11-13 23:30:42,831 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 616.6666666666666) internal successors, (1850), 3 states have internal predecessors, (1850), 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) [2024-11-13 23:30:42,831 INFO L276 IsEmpty]: Start isEmpty. Operand 162166 states and 179492 transitions. [2024-11-13 23:30:42,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2092 [2024-11-13 23:30:42,939 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 23:30:42,940 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 23:30:42,940 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-11-13 23:30:42,940 INFO L396 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 23:30:42,941 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 23:30:42,941 INFO L85 PathProgramCache]: Analyzing trace with hash -409927433, now seen corresponding path program 1 times [2024-11-13 23:30:42,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-13 23:30:42,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1779356755] [2024-11-13 23:30:42,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:30:42,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 23:30:43,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:30:45,725 INFO L134 CoverageAnalysis]: Checked inductivity of 811 backedges. 533 proven. 0 refuted. 0 times theorem prover too weak. 278 trivial. 0 not checked. [2024-11-13 23:30:45,725 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-13 23:30:45,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1779356755] [2024-11-13 23:30:45,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1779356755] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 23:30:45,725 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 23:30:45,725 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 23:30:45,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660120347] [2024-11-13 23:30:45,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 23:30:45,726 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 23:30:45,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-13 23:30:45,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 23:30:45,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 23:30:45,728 INFO L87 Difference]: Start difference. First operand 162166 states and 179492 transitions. Second operand has 3 states, 3 states have (on average 605.0) internal successors, (1815), 3 states have internal predecessors, (1815), 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) [2024-11-13 23:30:53,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 23:30:53,353 INFO L93 Difference]: Finished difference Result 384936 states and 424293 transitions. [2024-11-13 23:30:53,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 23:30:53,354 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 605.0) internal successors, (1815), 3 states have internal predecessors, (1815), 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 2091 [2024-11-13 23:30:53,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 23:30:53,584 INFO L225 Difference]: With dead ends: 384936 [2024-11-13 23:30:53,584 INFO L226 Difference]: Without dead ends: 221134 [2024-11-13 23:30:53,674 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 23:30:53,674 INFO L432 NwaCegarLoop]: 2845 mSDtfsCounter, 1575 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 5712 mSolverCounterSat, 904 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1575 SdHoareTripleChecker+Valid, 2857 SdHoareTripleChecker+Invalid, 6616 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 904 IncrementalHoareTripleChecker+Valid, 5712 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time [2024-11-13 23:30:53,674 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1575 Valid, 2857 Invalid, 6616 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [904 Valid, 5712 Invalid, 0 Unknown, 0 Unchecked, 6.4s Time] [2024-11-13 23:30:53,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221134 states. [2024-11-13 23:30:55,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221134 to 221134. [2024-11-13 23:30:56,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 221134 states, 221133 states have (on average 1.0844740495538885) internal successors, (239813), 221133 states have internal predecessors, (239813), 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) [2024-11-13 23:30:56,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221134 states to 221134 states and 239813 transitions. [2024-11-13 23:30:56,573 INFO L78 Accepts]: Start accepts. Automaton has 221134 states and 239813 transitions. Word has length 2091 [2024-11-13 23:30:56,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 23:30:56,574 INFO L471 AbstractCegarLoop]: Abstraction has 221134 states and 239813 transitions. [2024-11-13 23:30:56,574 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 605.0) internal successors, (1815), 3 states have internal predecessors, (1815), 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) [2024-11-13 23:30:56,574 INFO L276 IsEmpty]: Start isEmpty. Operand 221134 states and 239813 transitions. [2024-11-13 23:30:57,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2256 [2024-11-13 23:30:57,085 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 23:30:57,086 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 23:30:57,086 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-11-13 23:30:57,086 INFO L396 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 23:30:57,086 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 23:30:57,087 INFO L85 PathProgramCache]: Analyzing trace with hash -13686413, now seen corresponding path program 1 times [2024-11-13 23:30:57,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-13 23:30:57,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1394503999] [2024-11-13 23:30:57,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:30:57,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 23:30:57,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:31:00,081 INFO L134 CoverageAnalysis]: Checked inductivity of 1177 backedges. 998 proven. 0 refuted. 0 times theorem prover too weak. 179 trivial. 0 not checked. [2024-11-13 23:31:00,081 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-13 23:31:00,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1394503999] [2024-11-13 23:31:00,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1394503999] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 23:31:00,081 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 23:31:00,082 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 23:31:00,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939519847] [2024-11-13 23:31:00,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 23:31:00,084 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 23:31:00,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-13 23:31:00,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 23:31:00,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 23:31:00,087 INFO L87 Difference]: Start difference. First operand 221134 states and 239813 transitions. Second operand has 3 states, 3 states have (on average 704.3333333333334) internal successors, (2113), 3 states have internal predecessors, (2113), 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)