./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/Problem05_label43+token_ring.05.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fceb3d7-06c0-4a03-8a75-d5a1698fb7b6/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fceb3d7-06c0-4a03-8a75-d5a1698fb7b6/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fceb3d7-06c0-4a03-8a75-d5a1698fb7b6/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fceb3d7-06c0-4a03-8a75-d5a1698fb7b6/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/Problem05_label43+token_ring.05.cil-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fceb3d7-06c0-4a03-8a75-d5a1698fb7b6/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fceb3d7-06c0-4a03-8a75-d5a1698fb7b6/bin/uautomizer-verify-BQ2R08f2Ya --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 397165505e22c94185c98ac889a4a39846b9e873d477057714c221ff936752e7 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 06:13:08,024 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 06:13:08,091 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fceb3d7-06c0-4a03-8a75-d5a1698fb7b6/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-29 06:13:08,096 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 06:13:08,096 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 06:13:08,122 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 06:13:08,122 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 06:13:08,123 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 06:13:08,123 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 06:13:08,124 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 06:13:08,124 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 06:13:08,125 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 06:13:08,126 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 06:13:08,126 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 06:13:08,127 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 06:13:08,127 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 06:13:08,128 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 06:13:08,128 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 06:13:08,129 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 06:13:08,129 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 06:13:08,130 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 06:13:08,130 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 06:13:08,131 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 06:13:08,131 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 06:13:08,132 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 06:13:08,132 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 06:13:08,132 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 06:13:08,133 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 06:13:08,133 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 06:13:08,134 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 06:13:08,134 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 06:13:08,134 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 06:13:08,135 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 06:13:08,135 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 06:13:08,136 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 06:13:08,136 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 06:13:08,137 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 06:13:08,137 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 06:13:08,137 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 06:13:08,144 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 06:13:08,145 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 06:13:08,146 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 06:13:08,147 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fceb3d7-06c0-4a03-8a75-d5a1698fb7b6/bin/uautomizer-verify-BQ2R08f2Ya/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fceb3d7-06c0-4a03-8a75-d5a1698fb7b6/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 397165505e22c94185c98ac889a4a39846b9e873d477057714c221ff936752e7 [2023-11-29 06:13:08,366 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 06:13:08,387 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 06:13:08,389 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 06:13:08,391 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 06:13:08,391 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 06:13:08,392 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fceb3d7-06c0-4a03-8a75-d5a1698fb7b6/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/combinations/Problem05_label43+token_ring.05.cil-1.c [2023-11-29 06:13:11,186 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 06:13:11,660 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 06:13:11,660 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fceb3d7-06c0-4a03-8a75-d5a1698fb7b6/sv-benchmarks/c/combinations/Problem05_label43+token_ring.05.cil-1.c [2023-11-29 06:13:11,700 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fceb3d7-06c0-4a03-8a75-d5a1698fb7b6/bin/uautomizer-verify-BQ2R08f2Ya/data/84834c287/880b17ed4bf94c199f955e38ee93c9a8/FLAGae4da2063 [2023-11-29 06:13:11,714 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fceb3d7-06c0-4a03-8a75-d5a1698fb7b6/bin/uautomizer-verify-BQ2R08f2Ya/data/84834c287/880b17ed4bf94c199f955e38ee93c9a8 [2023-11-29 06:13:11,716 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 06:13:11,718 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 06:13:11,719 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 06:13:11,719 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 06:13:11,724 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 06:13:11,725 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 06:13:11" (1/1) ... [2023-11-29 06:13:11,726 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@70d8cda3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:13:11, skipping insertion in model container [2023-11-29 06:13:11,726 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 06:13:11" (1/1) ... [2023-11-29 06:13:12,039 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 06:13:13,829 WARN L240 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_9fceb3d7-06c0-4a03-8a75-d5a1698fb7b6/sv-benchmarks/c/combinations/Problem05_label43+token_ring.05.cil-1.c[381679,381692] [2023-11-29 06:13:13,855 WARN L240 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_9fceb3d7-06c0-4a03-8a75-d5a1698fb7b6/sv-benchmarks/c/combinations/Problem05_label43+token_ring.05.cil-1.c[383339,383352] [2023-11-29 06:13:14,042 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 06:13:14,052 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 06:13:15,069 WARN L240 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_9fceb3d7-06c0-4a03-8a75-d5a1698fb7b6/sv-benchmarks/c/combinations/Problem05_label43+token_ring.05.cil-1.c[381679,381692] [2023-11-29 06:13:15,073 WARN L240 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_9fceb3d7-06c0-4a03-8a75-d5a1698fb7b6/sv-benchmarks/c/combinations/Problem05_label43+token_ring.05.cil-1.c[383339,383352] [2023-11-29 06:13:15,087 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 06:13:15,161 INFO L206 MainTranslator]: Completed translation [2023-11-29 06:13:15,162 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:13:15 WrapperNode [2023-11-29 06:13:15,162 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 06:13:15,163 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 06:13:15,163 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 06:13:15,163 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 06:13:15,171 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:13:15" (1/1) ... [2023-11-29 06:13:15,241 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:13:15" (1/1) ... [2023-11-29 06:13:15,539 INFO L138 Inliner]: procedures = 54, calls = 56, calls flagged for inlining = 32, calls inlined = 32, statements flattened = 12808 [2023-11-29 06:13:15,540 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 06:13:15,540 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 06:13:15,541 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 06:13:15,541 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 06:13:15,549 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:13:15" (1/1) ... [2023-11-29 06:13:15,549 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:13:15" (1/1) ... [2023-11-29 06:13:15,580 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:13:15" (1/1) ... [2023-11-29 06:13:15,745 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-11-29 06:13:15,746 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:13:15" (1/1) ... [2023-11-29 06:13:15,746 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:13:15" (1/1) ... [2023-11-29 06:13:15,843 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:13:15" (1/1) ... [2023-11-29 06:13:15,880 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:13:15" (1/1) ... [2023-11-29 06:13:15,895 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:13:15" (1/1) ... [2023-11-29 06:13:15,912 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:13:15" (1/1) ... [2023-11-29 06:13:16,023 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 06:13:16,027 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 06:13:16,027 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 06:13:16,027 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 06:13:16,028 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:13:15" (1/1) ... [2023-11-29 06:13:16,036 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 06:13:16,047 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fceb3d7-06c0-4a03-8a75-d5a1698fb7b6/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:13:16,059 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fceb3d7-06c0-4a03-8a75-d5a1698fb7b6/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 06:13:16,063 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fceb3d7-06c0-4a03-8a75-d5a1698fb7b6/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 06:13:16,099 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 06:13:16,099 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2023-11-29 06:13:16,099 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2023-11-29 06:13:16,100 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2023-11-29 06:13:16,101 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2023-11-29 06:13:16,101 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2023-11-29 06:13:16,102 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2023-11-29 06:13:16,102 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2023-11-29 06:13:16,102 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2023-11-29 06:13:16,103 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2023-11-29 06:13:16,103 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2023-11-29 06:13:16,103 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2023-11-29 06:13:16,103 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2023-11-29 06:13:16,103 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 06:13:16,103 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 06:13:16,104 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 06:13:16,228 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 06:13:16,230 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 06:13:23,712 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 06:13:23,808 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 06:13:23,809 INFO L309 CfgBuilder]: Removed 9 assume(true) statements. [2023-11-29 06:13:23,810 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 06:13:23 BoogieIcfgContainer [2023-11-29 06:13:23,810 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 06:13:23,813 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 06:13:23,813 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 06:13:23,817 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 06:13:23,817 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 06:13:11" (1/3) ... [2023-11-29 06:13:23,818 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b2fa4bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 06:13:23, skipping insertion in model container [2023-11-29 06:13:23,818 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:13:15" (2/3) ... [2023-11-29 06:13:23,818 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b2fa4bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 06:13:23, skipping insertion in model container [2023-11-29 06:13:23,818 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 06:13:23" (3/3) ... [2023-11-29 06:13:23,820 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem05_label43+token_ring.05.cil-1.c [2023-11-29 06:13:23,838 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 06:13:23,838 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-29 06:13:23,927 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 06:13:23,933 INFO L357 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, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, 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;@8f95f12, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 06:13:23,934 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-11-29 06:13:23,946 INFO L276 IsEmpty]: Start isEmpty. Operand has 2310 states, 2282 states have (on average 1.8825591586327783) internal successors, (4296), 2285 states have internal predecessors, (4296), 19 states have call successors, (19), 6 states have call predecessors, (19), 6 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2023-11-29 06:13:23,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-11-29 06:13:23,962 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:13:23,963 INFO L195 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] [2023-11-29 06:13:23,964 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:13:23,968 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:13:23,969 INFO L85 PathProgramCache]: Analyzing trace with hash 1867406071, now seen corresponding path program 1 times [2023-11-29 06:13:23,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:13:23,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [491219409] [2023-11-29 06:13:23,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:13:23,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:13:24,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:13:24,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 06:13:24,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:13:24,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-29 06:13:24,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:13:24,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-29 06:13:24,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:13:24,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-29 06:13:24,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:13:24,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-11-29 06:13:24,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:13:24,348 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:13:24,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:13:24,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [491219409] [2023-11-29 06:13:24,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [491219409] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:13:24,350 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:13:24,350 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 06:13:24,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143562144] [2023-11-29 06:13:24,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:13:24,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 06:13:24,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:13:24,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 06:13:24,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 06:13:24,394 INFO L87 Difference]: Start difference. First operand has 2310 states, 2282 states have (on average 1.8825591586327783) internal successors, (4296), 2285 states have internal predecessors, (4296), 19 states have call successors, (19), 6 states have call predecessors, (19), 6 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 06:13:25,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:13:25,430 INFO L93 Difference]: Finished difference Result 4674 states and 8762 transitions. [2023-11-29 06:13:25,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 06:13:25,432 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 91 [2023-11-29 06:13:25,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:13:25,461 INFO L225 Difference]: With dead ends: 4674 [2023-11-29 06:13:25,461 INFO L226 Difference]: Without dead ends: 2366 [2023-11-29 06:13:25,472 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-29 06:13:25,475 INFO L413 NwaCegarLoop]: 4124 mSDtfsCounter, 480 mSDsluCounter, 12050 mSDsCounter, 0 mSdLazyCounter, 524 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 497 SdHoareTripleChecker+Valid, 16174 SdHoareTripleChecker+Invalid, 566 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 524 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-29 06:13:25,476 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [497 Valid, 16174 Invalid, 566 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [42 Valid, 524 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-29 06:13:25,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2366 states. [2023-11-29 06:13:25,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2366 to 2306. [2023-11-29 06:13:25,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2306 states, 2279 states have (on average 1.8473014480035104) internal successors, (4210), 2281 states have internal predecessors, (4210), 19 states have call successors, (19), 6 states have call predecessors, (19), 6 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2023-11-29 06:13:25,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2306 states to 2306 states and 4248 transitions. [2023-11-29 06:13:25,617 INFO L78 Accepts]: Start accepts. Automaton has 2306 states and 4248 transitions. Word has length 91 [2023-11-29 06:13:25,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:13:25,618 INFO L495 AbstractCegarLoop]: Abstraction has 2306 states and 4248 transitions. [2023-11-29 06:13:25,618 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 06:13:25,619 INFO L276 IsEmpty]: Start isEmpty. Operand 2306 states and 4248 transitions. [2023-11-29 06:13:25,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-11-29 06:13:25,624 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:13:25,624 INFO L195 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] [2023-11-29 06:13:25,624 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-29 06:13:25,625 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:13:25,625 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:13:25,625 INFO L85 PathProgramCache]: Analyzing trace with hash 300648121, now seen corresponding path program 1 times [2023-11-29 06:13:25,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:13:25,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1239887123] [2023-11-29 06:13:25,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:13:25,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:13:25,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:13:25,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 06:13:25,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:13:25,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-29 06:13:25,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:13:25,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-29 06:13:25,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:13:25,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-29 06:13:25,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:13:25,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-11-29 06:13:25,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:13:25,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:13:25,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:13:25,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1239887123] [2023-11-29 06:13:25,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1239887123] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:13:25,885 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:13:25,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 06:13:25,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419918250] [2023-11-29 06:13:25,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:13:25,887 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 06:13:25,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:13:25,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 06:13:25,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-29 06:13:25,889 INFO L87 Difference]: Start difference. First operand 2306 states and 4248 transitions. Second operand has 6 states, 6 states have (on average 13.5) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 06:13:27,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:13:27,366 INFO L93 Difference]: Finished difference Result 2779 states and 5016 transitions. [2023-11-29 06:13:27,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 06:13:27,366 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (5), 3 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 91 [2023-11-29 06:13:27,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:13:27,384 INFO L225 Difference]: With dead ends: 2779 [2023-11-29 06:13:27,384 INFO L226 Difference]: Without dead ends: 2605 [2023-11-29 06:13:27,386 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2023-11-29 06:13:27,388 INFO L413 NwaCegarLoop]: 4103 mSDtfsCounter, 4671 mSDsluCounter, 12286 mSDsCounter, 0 mSdLazyCounter, 1115 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4683 SdHoareTripleChecker+Valid, 16389 SdHoareTripleChecker+Invalid, 1195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 1115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-29 06:13:27,388 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4683 Valid, 16389 Invalid, 1195 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [80 Valid, 1115 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-29 06:13:27,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2605 states. [2023-11-29 06:13:27,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2605 to 2486. [2023-11-29 06:13:27,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2486 states, 2438 states have (on average 1.8314191960623463) internal successors, (4465), 2441 states have internal predecessors, (4465), 33 states have call successors, (33), 12 states have call predecessors, (33), 13 states have return successors, (36), 33 states have call predecessors, (36), 33 states have call successors, (36) [2023-11-29 06:13:27,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2486 states to 2486 states and 4534 transitions. [2023-11-29 06:13:27,481 INFO L78 Accepts]: Start accepts. Automaton has 2486 states and 4534 transitions. Word has length 91 [2023-11-29 06:13:27,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:13:27,481 INFO L495 AbstractCegarLoop]: Abstraction has 2486 states and 4534 transitions. [2023-11-29 06:13:27,481 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 06:13:27,482 INFO L276 IsEmpty]: Start isEmpty. Operand 2486 states and 4534 transitions. [2023-11-29 06:13:27,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-11-29 06:13:27,484 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:13:27,484 INFO L195 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] [2023-11-29 06:13:27,485 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-29 06:13:27,485 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:13:27,485 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:13:27,485 INFO L85 PathProgramCache]: Analyzing trace with hash 1713917117, now seen corresponding path program 1 times [2023-11-29 06:13:27,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:13:27,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1929049339] [2023-11-29 06:13:27,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:13:27,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:13:27,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:13:27,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 06:13:27,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:13:27,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-29 06:13:27,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:13:27,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-29 06:13:27,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:13:27,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-29 06:13:27,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:13:27,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-11-29 06:13:27,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:13:27,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:13:27,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:13:27,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1929049339] [2023-11-29 06:13:27,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1929049339] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:13:27,709 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:13:27,709 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 06:13:27,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939036695] [2023-11-29 06:13:27,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:13:27,710 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 06:13:27,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:13:27,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 06:13:27,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 06:13:27,711 INFO L87 Difference]: Start difference. First operand 2486 states and 4534 transitions. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 06:13:29,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:13:29,842 INFO L93 Difference]: Finished difference Result 3204 states and 5694 transitions. [2023-11-29 06:13:29,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-29 06:13:29,843 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (5), 3 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 91 [2023-11-29 06:13:29,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:13:29,862 INFO L225 Difference]: With dead ends: 3204 [2023-11-29 06:13:29,862 INFO L226 Difference]: Without dead ends: 2850 [2023-11-29 06:13:29,865 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-11-29 06:13:29,867 INFO L413 NwaCegarLoop]: 4210 mSDtfsCounter, 4688 mSDsluCounter, 16626 mSDsCounter, 0 mSdLazyCounter, 1822 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4700 SdHoareTripleChecker+Valid, 20836 SdHoareTripleChecker+Invalid, 1869 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 1822 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-11-29 06:13:29,867 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4700 Valid, 20836 Invalid, 1869 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [47 Valid, 1822 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-11-29 06:13:29,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2850 states. [2023-11-29 06:13:29,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2850 to 2653. [2023-11-29 06:13:29,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2653 states, 2584 states have (on average 1.8165634674922602) internal successors, (4694), 2588 states have internal predecessors, (4694), 47 states have call successors, (47), 18 states have call predecessors, (47), 20 states have return successors, (52), 48 states have call predecessors, (52), 47 states have call successors, (52) [2023-11-29 06:13:29,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2653 states to 2653 states and 4793 transitions. [2023-11-29 06:13:29,988 INFO L78 Accepts]: Start accepts. Automaton has 2653 states and 4793 transitions. Word has length 91 [2023-11-29 06:13:29,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:13:29,988 INFO L495 AbstractCegarLoop]: Abstraction has 2653 states and 4793 transitions. [2023-11-29 06:13:29,989 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 06:13:29,989 INFO L276 IsEmpty]: Start isEmpty. Operand 2653 states and 4793 transitions. [2023-11-29 06:13:29,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-11-29 06:13:29,991 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:13:29,991 INFO L195 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] [2023-11-29 06:13:29,991 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-29 06:13:29,992 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:13:29,992 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:13:29,992 INFO L85 PathProgramCache]: Analyzing trace with hash -363419781, now seen corresponding path program 1 times [2023-11-29 06:13:29,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:13:29,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [991649866] [2023-11-29 06:13:29,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:13:29,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:13:30,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:13:30,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 06:13:30,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:13:30,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-29 06:13:30,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:13:30,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-29 06:13:30,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:13:30,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-29 06:13:30,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:13:30,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-11-29 06:13:30,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:13:30,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:13:30,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:13:30,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [991649866] [2023-11-29 06:13:30,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [991649866] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:13:30,206 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:13:30,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 06:13:30,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455371391] [2023-11-29 06:13:30,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:13:30,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 06:13:30,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:13:30,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 06:13:30,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-29 06:13:30,209 INFO L87 Difference]: Start difference. First operand 2653 states and 4793 transitions. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 06:13:31,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:13:31,062 INFO L93 Difference]: Finished difference Result 3375 states and 5967 transitions. [2023-11-29 06:13:31,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 06:13:31,063 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (5), 3 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 91 [2023-11-29 06:13:31,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:13:31,077 INFO L225 Difference]: With dead ends: 3375 [2023-11-29 06:13:31,077 INFO L226 Difference]: Without dead ends: 2854 [2023-11-29 06:13:31,079 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-11-29 06:13:31,080 INFO L413 NwaCegarLoop]: 4090 mSDtfsCounter, 4567 mSDsluCounter, 12183 mSDsCounter, 0 mSdLazyCounter, 824 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4580 SdHoareTripleChecker+Valid, 16273 SdHoareTripleChecker+Invalid, 894 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 824 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-29 06:13:31,081 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4580 Valid, 16273 Invalid, 894 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 824 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-29 06:13:31,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2854 states. [2023-11-29 06:13:31,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2854 to 2653. [2023-11-29 06:13:31,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2653 states, 2584 states have (on average 1.8154024767801857) internal successors, (4691), 2588 states have internal predecessors, (4691), 47 states have call successors, (47), 18 states have call predecessors, (47), 20 states have return successors, (52), 48 states have call predecessors, (52), 47 states have call successors, (52) [2023-11-29 06:13:31,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2653 states to 2653 states and 4790 transitions. [2023-11-29 06:13:31,150 INFO L78 Accepts]: Start accepts. Automaton has 2653 states and 4790 transitions. Word has length 91 [2023-11-29 06:13:31,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:13:31,150 INFO L495 AbstractCegarLoop]: Abstraction has 2653 states and 4790 transitions. [2023-11-29 06:13:31,150 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 06:13:31,151 INFO L276 IsEmpty]: Start isEmpty. Operand 2653 states and 4790 transitions. [2023-11-29 06:13:31,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-11-29 06:13:31,152 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:13:31,152 INFO L195 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] [2023-11-29 06:13:31,152 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-29 06:13:31,152 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:13:31,153 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:13:31,153 INFO L85 PathProgramCache]: Analyzing trace with hash 523803065, now seen corresponding path program 1 times [2023-11-29 06:13:31,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:13:31,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1206357065] [2023-11-29 06:13:31,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:13:31,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:13:31,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:13:31,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 06:13:31,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:13:31,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-29 06:13:31,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:13:31,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-29 06:13:31,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:13:31,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-29 06:13:31,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:13:31,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-11-29 06:13:31,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:13:31,294 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:13:31,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:13:31,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1206357065] [2023-11-29 06:13:31,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1206357065] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:13:31,295 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:13:31,295 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 06:13:31,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287217590] [2023-11-29 06:13:31,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:13:31,296 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 06:13:31,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:13:31,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 06:13:31,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-29 06:13:31,298 INFO L87 Difference]: Start difference. First operand 2653 states and 4790 transitions. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 06:13:32,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:13:32,267 INFO L93 Difference]: Finished difference Result 3371 states and 5950 transitions. [2023-11-29 06:13:32,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 06:13:32,267 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (5), 3 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 91 [2023-11-29 06:13:32,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:13:32,281 INFO L225 Difference]: With dead ends: 3371 [2023-11-29 06:13:32,281 INFO L226 Difference]: Without dead ends: 2850 [2023-11-29 06:13:32,283 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-11-29 06:13:32,284 INFO L413 NwaCegarLoop]: 4090 mSDtfsCounter, 4490 mSDsluCounter, 16226 mSDsCounter, 0 mSdLazyCounter, 904 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4503 SdHoareTripleChecker+Valid, 20316 SdHoareTripleChecker+Invalid, 955 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 904 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-29 06:13:32,284 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4503 Valid, 20316 Invalid, 955 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 904 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-29 06:13:32,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2850 states. [2023-11-29 06:13:32,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2850 to 2653. [2023-11-29 06:13:32,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2653 states, 2584 states have (on average 1.8142414860681115) internal successors, (4688), 2588 states have internal predecessors, (4688), 47 states have call successors, (47), 18 states have call predecessors, (47), 20 states have return successors, (52), 48 states have call predecessors, (52), 47 states have call successors, (52) [2023-11-29 06:13:32,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2653 states to 2653 states and 4787 transitions. [2023-11-29 06:13:32,351 INFO L78 Accepts]: Start accepts. Automaton has 2653 states and 4787 transitions. Word has length 91 [2023-11-29 06:13:32,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:13:32,351 INFO L495 AbstractCegarLoop]: Abstraction has 2653 states and 4787 transitions. [2023-11-29 06:13:32,352 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 06:13:32,352 INFO L276 IsEmpty]: Start isEmpty. Operand 2653 states and 4787 transitions. [2023-11-29 06:13:32,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-11-29 06:13:32,353 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:13:32,353 INFO L195 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] [2023-11-29 06:13:32,353 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-29 06:13:32,353 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:13:32,354 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:13:32,354 INFO L85 PathProgramCache]: Analyzing trace with hash -1387239493, now seen corresponding path program 1 times [2023-11-29 06:13:32,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:13:32,354 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1999096751] [2023-11-29 06:13:32,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:13:32,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:13:32,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:13:32,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 06:13:32,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:13:32,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-29 06:13:32,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:13:32,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-29 06:13:32,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:13:32,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-29 06:13:32,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:13:32,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-11-29 06:13:32,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:13:32,496 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:13:32,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:13:32,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1999096751] [2023-11-29 06:13:32,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1999096751] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:13:32,497 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:13:32,497 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 06:13:32,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383602629] [2023-11-29 06:13:32,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:13:32,498 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 06:13:32,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:13:32,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 06:13:32,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-29 06:13:32,499 INFO L87 Difference]: Start difference. First operand 2653 states and 4787 transitions. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 06:13:33,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:13:33,333 INFO L93 Difference]: Finished difference Result 3367 states and 5933 transitions. [2023-11-29 06:13:33,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 06:13:33,334 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (5), 3 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 91 [2023-11-29 06:13:33,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:13:33,350 INFO L225 Difference]: With dead ends: 3367 [2023-11-29 06:13:33,350 INFO L226 Difference]: Without dead ends: 2846 [2023-11-29 06:13:33,352 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-11-29 06:13:33,353 INFO L413 NwaCegarLoop]: 4090 mSDtfsCounter, 4488 mSDsluCounter, 16226 mSDsCounter, 0 mSdLazyCounter, 888 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4501 SdHoareTripleChecker+Valid, 20316 SdHoareTripleChecker+Invalid, 939 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 888 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-29 06:13:33,353 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4501 Valid, 20316 Invalid, 939 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 888 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-29 06:13:33,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2846 states. [2023-11-29 06:13:33,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2846 to 2653. [2023-11-29 06:13:33,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2653 states, 2584 states have (on average 1.813080495356037) internal successors, (4685), 2588 states have internal predecessors, (4685), 47 states have call successors, (47), 18 states have call predecessors, (47), 20 states have return successors, (52), 48 states have call predecessors, (52), 47 states have call successors, (52) [2023-11-29 06:13:33,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2653 states to 2653 states and 4784 transitions. [2023-11-29 06:13:33,441 INFO L78 Accepts]: Start accepts. Automaton has 2653 states and 4784 transitions. Word has length 91 [2023-11-29 06:13:33,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:13:33,442 INFO L495 AbstractCegarLoop]: Abstraction has 2653 states and 4784 transitions. [2023-11-29 06:13:33,442 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 06:13:33,442 INFO L276 IsEmpty]: Start isEmpty. Operand 2653 states and 4784 transitions. [2023-11-29 06:13:33,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-11-29 06:13:33,444 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:13:33,444 INFO L195 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] [2023-11-29 06:13:33,444 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-29 06:13:33,444 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:13:33,445 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:13:33,445 INFO L85 PathProgramCache]: Analyzing trace with hash -1310338695, now seen corresponding path program 1 times [2023-11-29 06:13:33,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:13:33,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828626784] [2023-11-29 06:13:33,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:13:33,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:13:33,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:13:33,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 06:13:33,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:13:33,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-29 06:13:33,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:13:33,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-29 06:13:33,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:13:33,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-29 06:13:33,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:13:33,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-11-29 06:13:33,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:13:33,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:13:33,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:13:33,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [828626784] [2023-11-29 06:13:33,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [828626784] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:13:33,614 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:13:33,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 06:13:33,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579808820] [2023-11-29 06:13:33,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:13:33,615 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 06:13:33,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:13:33,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 06:13:33,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 06:13:33,616 INFO L87 Difference]: Start difference. First operand 2653 states and 4784 transitions. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 06:13:35,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:13:35,295 INFO L93 Difference]: Finished difference Result 3949 states and 6833 transitions. [2023-11-29 06:13:35,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-29 06:13:35,295 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (5), 3 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 91 [2023-11-29 06:13:35,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:13:35,313 INFO L225 Difference]: With dead ends: 3949 [2023-11-29 06:13:35,314 INFO L226 Difference]: Without dead ends: 3428 [2023-11-29 06:13:35,318 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-11-29 06:13:35,319 INFO L413 NwaCegarLoop]: 4114 mSDtfsCounter, 4898 mSDsluCounter, 16369 mSDsCounter, 0 mSdLazyCounter, 1448 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4916 SdHoareTripleChecker+Valid, 20483 SdHoareTripleChecker+Invalid, 1522 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 1448 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-29 06:13:35,319 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4916 Valid, 20483 Invalid, 1522 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [74 Valid, 1448 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-29 06:13:35,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3428 states. [2023-11-29 06:13:35,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3428 to 2996. [2023-11-29 06:13:35,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2996 states, 2887 states have (on average 1.7852441981295462) internal successors, (5154), 2893 states have internal predecessors, (5154), 73 states have call successors, (73), 30 states have call predecessors, (73), 34 states have return successors, (86), 76 states have call predecessors, (86), 73 states have call successors, (86) [2023-11-29 06:13:35,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2996 states to 2996 states and 5313 transitions. [2023-11-29 06:13:35,426 INFO L78 Accepts]: Start accepts. Automaton has 2996 states and 5313 transitions. Word has length 91 [2023-11-29 06:13:35,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:13:35,426 INFO L495 AbstractCegarLoop]: Abstraction has 2996 states and 5313 transitions. [2023-11-29 06:13:35,427 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 06:13:35,427 INFO L276 IsEmpty]: Start isEmpty. Operand 2996 states and 5313 transitions. [2023-11-29 06:13:35,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-11-29 06:13:35,429 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:13:35,429 INFO L195 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] [2023-11-29 06:13:35,429 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-29 06:13:35,430 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:13:35,430 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:13:35,430 INFO L85 PathProgramCache]: Analyzing trace with hash 2017277947, now seen corresponding path program 1 times [2023-11-29 06:13:35,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:13:35,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928415948] [2023-11-29 06:13:35,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:13:35,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:13:35,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:13:35,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 06:13:35,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:13:35,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-29 06:13:35,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:13:35,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-29 06:13:35,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:13:35,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-29 06:13:35,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:13:35,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-11-29 06:13:35,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:13:35,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:13:35,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:13:35,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928415948] [2023-11-29 06:13:35,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1928415948] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:13:35,613 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:13:35,613 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 06:13:35,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094917728] [2023-11-29 06:13:35,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:13:35,613 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 06:13:35,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:13:35,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 06:13:35,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 06:13:35,614 INFO L87 Difference]: Start difference. First operand 2996 states and 5313 transitions. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 06:13:37,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:13:37,524 INFO L93 Difference]: Finished difference Result 5232 states and 8832 transitions. [2023-11-29 06:13:37,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-29 06:13:37,524 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (5), 3 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 91 [2023-11-29 06:13:37,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:13:37,545 INFO L225 Difference]: With dead ends: 5232 [2023-11-29 06:13:37,545 INFO L226 Difference]: Without dead ends: 4368 [2023-11-29 06:13:37,549 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-11-29 06:13:37,549 INFO L413 NwaCegarLoop]: 4205 mSDtfsCounter, 4697 mSDsluCounter, 16618 mSDsCounter, 0 mSdLazyCounter, 1987 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4708 SdHoareTripleChecker+Valid, 20823 SdHoareTripleChecker+Invalid, 2038 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 1987 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-11-29 06:13:37,550 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4708 Valid, 20823 Invalid, 2038 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [51 Valid, 1987 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-11-29 06:13:37,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4368 states. [2023-11-29 06:13:37,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4368 to 3653. [2023-11-29 06:13:37,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3653 states, 3466 states have (on average 1.7443739180611657) internal successors, (6046), 3476 states have internal predecessors, (6046), 123 states have call successors, (123), 54 states have call predecessors, (123), 62 states have return successors, (158), 130 states have call predecessors, (158), 123 states have call successors, (158) [2023-11-29 06:13:37,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3653 states to 3653 states and 6327 transitions. [2023-11-29 06:13:37,732 INFO L78 Accepts]: Start accepts. Automaton has 3653 states and 6327 transitions. Word has length 91 [2023-11-29 06:13:37,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:13:37,733 INFO L495 AbstractCegarLoop]: Abstraction has 3653 states and 6327 transitions. [2023-11-29 06:13:37,733 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 06:13:37,733 INFO L276 IsEmpty]: Start isEmpty. Operand 3653 states and 6327 transitions. [2023-11-29 06:13:37,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-11-29 06:13:37,736 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:13:37,736 INFO L195 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] [2023-11-29 06:13:37,736 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-29 06:13:37,736 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:13:37,737 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:13:37,737 INFO L85 PathProgramCache]: Analyzing trace with hash -369231559, now seen corresponding path program 1 times [2023-11-29 06:13:37,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:13:37,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [457861375] [2023-11-29 06:13:37,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:13:37,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:13:37,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:13:37,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 06:13:37,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:13:37,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-29 06:13:37,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:13:37,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-29 06:13:37,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:13:37,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-29 06:13:37,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:13:37,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-11-29 06:13:37,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:13:37,900 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:13:37,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:13:37,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [457861375] [2023-11-29 06:13:37,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [457861375] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:13:37,900 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:13:37,900 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 06:13:37,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817554306] [2023-11-29 06:13:37,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:13:37,901 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 06:13:37,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:13:37,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 06:13:37,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 06:13:37,902 INFO L87 Difference]: Start difference. First operand 3653 states and 6327 transitions. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 06:13:39,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:13:39,578 INFO L93 Difference]: Finished difference Result 7675 states and 12640 transitions. [2023-11-29 06:13:39,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-29 06:13:39,578 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (5), 3 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 91 [2023-11-29 06:13:39,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:13:39,600 INFO L225 Difference]: With dead ends: 7675 [2023-11-29 06:13:39,600 INFO L226 Difference]: Without dead ends: 6154 [2023-11-29 06:13:39,606 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-11-29 06:13:39,607 INFO L413 NwaCegarLoop]: 4206 mSDtfsCounter, 4778 mSDsluCounter, 16621 mSDsCounter, 0 mSdLazyCounter, 1690 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4796 SdHoareTripleChecker+Valid, 20827 SdHoareTripleChecker+Invalid, 1742 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 1690 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-29 06:13:39,607 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4796 Valid, 20827 Invalid, 1742 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [52 Valid, 1690 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-29 06:13:39,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6154 states. [2023-11-29 06:13:39,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6154 to 4986. [2023-11-29 06:13:39,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4986 states, 4647 states have (on average 1.6931353561437485) internal successors, (7868), 4665 states have internal predecessors, (7868), 219 states have call successors, (219), 102 states have call predecessors, (219), 118 states have return successors, (316), 234 states have call predecessors, (316), 219 states have call successors, (316) [2023-11-29 06:13:39,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4986 states to 4986 states and 8403 transitions. [2023-11-29 06:13:39,828 INFO L78 Accepts]: Start accepts. Automaton has 4986 states and 8403 transitions. Word has length 91 [2023-11-29 06:13:39,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:13:39,828 INFO L495 AbstractCegarLoop]: Abstraction has 4986 states and 8403 transitions. [2023-11-29 06:13:39,829 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 06:13:39,829 INFO L276 IsEmpty]: Start isEmpty. Operand 4986 states and 8403 transitions. [2023-11-29 06:13:39,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-11-29 06:13:39,833 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:13:39,833 INFO L195 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] [2023-11-29 06:13:39,833 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-29 06:13:39,833 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:13:39,834 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:13:39,834 INFO L85 PathProgramCache]: Analyzing trace with hash -861857733, now seen corresponding path program 1 times [2023-11-29 06:13:39,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:13:39,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049890147] [2023-11-29 06:13:39,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:13:39,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:13:39,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:13:39,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 06:13:39,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:13:39,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-29 06:13:39,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:13:39,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-29 06:13:39,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:13:39,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-29 06:13:39,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:13:39,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-11-29 06:13:39,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:13:39,992 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:13:39,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:13:39,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049890147] [2023-11-29 06:13:39,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1049890147] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:13:39,992 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:13:39,992 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 06:13:39,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477697391] [2023-11-29 06:13:39,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:13:39,993 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 06:13:39,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:13:39,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 06:13:39,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 06:13:39,994 INFO L87 Difference]: Start difference. First operand 4986 states and 8403 transitions. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 06:13:41,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:13:41,877 INFO L93 Difference]: Finished difference Result 12494 states and 20210 transitions. [2023-11-29 06:13:41,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-29 06:13:41,878 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (5), 3 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 91 [2023-11-29 06:13:41,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:13:41,898 INFO L225 Difference]: With dead ends: 12494 [2023-11-29 06:13:41,899 INFO L226 Difference]: Without dead ends: 9640 [2023-11-29 06:13:41,907 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-11-29 06:13:41,908 INFO L413 NwaCegarLoop]: 4206 mSDtfsCounter, 4748 mSDsluCounter, 16621 mSDsCounter, 0 mSdLazyCounter, 1672 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4766 SdHoareTripleChecker+Valid, 20827 SdHoareTripleChecker+Invalid, 1724 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 1672 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-29 06:13:41,908 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4766 Valid, 20827 Invalid, 1724 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [52 Valid, 1672 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-29 06:13:41,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9640 states. [2023-11-29 06:13:42,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9640 to 7651. [2023-11-29 06:13:42,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7651 states, 7016 states have (on average 1.6428164196123147) internal successors, (11526), 7050 states have internal predecessors, (11526), 403 states have call successors, (403), 198 states have call predecessors, (403), 230 states have return successors, (678), 434 states have call predecessors, (678), 403 states have call successors, (678) [2023-11-29 06:13:42,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7651 states to 7651 states and 12607 transitions. [2023-11-29 06:13:42,312 INFO L78 Accepts]: Start accepts. Automaton has 7651 states and 12607 transitions. Word has length 91 [2023-11-29 06:13:42,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:13:42,312 INFO L495 AbstractCegarLoop]: Abstraction has 7651 states and 12607 transitions. [2023-11-29 06:13:42,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 06:13:42,313 INFO L276 IsEmpty]: Start isEmpty. Operand 7651 states and 12607 transitions. [2023-11-29 06:13:42,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-11-29 06:13:42,318 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:13:42,318 INFO L195 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] [2023-11-29 06:13:42,318 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-29 06:13:42,318 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:13:42,319 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:13:42,319 INFO L85 PathProgramCache]: Analyzing trace with hash 92082425, now seen corresponding path program 1 times [2023-11-29 06:13:42,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:13:42,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [685053715] [2023-11-29 06:13:42,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:13:42,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:13:42,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:13:42,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 06:13:42,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:13:42,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-29 06:13:42,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:13:42,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-29 06:13:42,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:13:42,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-29 06:13:42,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:13:42,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-11-29 06:13:42,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:13:42,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:13:42,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:13:42,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [685053715] [2023-11-29 06:13:42,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [685053715] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:13:42,447 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:13:42,447 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 06:13:42,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237607434] [2023-11-29 06:13:42,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:13:42,447 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 06:13:42,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:13:42,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 06:13:42,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 06:13:42,448 INFO L87 Difference]: Start difference. First operand 7651 states and 12607 transitions. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 06:13:44,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:13:44,452 INFO L93 Difference]: Finished difference Result 21475 states and 34508 transitions. [2023-11-29 06:13:44,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-29 06:13:44,452 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (5), 3 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 91 [2023-11-29 06:13:44,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:13:44,500 INFO L225 Difference]: With dead ends: 21475 [2023-11-29 06:13:44,501 INFO L226 Difference]: Without dead ends: 15956 [2023-11-29 06:13:44,516 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-11-29 06:13:44,517 INFO L413 NwaCegarLoop]: 4206 mSDtfsCounter, 4670 mSDsluCounter, 16621 mSDsCounter, 0 mSdLazyCounter, 1643 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4688 SdHoareTripleChecker+Valid, 20827 SdHoareTripleChecker+Invalid, 1696 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 1643 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-29 06:13:44,517 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4688 Valid, 20827 Invalid, 1696 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [53 Valid, 1643 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-29 06:13:44,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15956 states. [2023-11-29 06:13:45,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15956 to 13013. [2023-11-29 06:13:45,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13013 states, 11802 states have (on average 1.6046432807998645) internal successors, (18938), 11868 states have internal predecessors, (18938), 755 states have call successors, (755), 390 states have call predecessors, (755), 454 states have return successors, (1548), 818 states have call predecessors, (1548), 755 states have call successors, (1548) [2023-11-29 06:13:45,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13013 states to 13013 states and 21241 transitions. [2023-11-29 06:13:45,187 INFO L78 Accepts]: Start accepts. Automaton has 13013 states and 21241 transitions. Word has length 91 [2023-11-29 06:13:45,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:13:45,187 INFO L495 AbstractCegarLoop]: Abstraction has 13013 states and 21241 transitions. [2023-11-29 06:13:45,188 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 06:13:45,188 INFO L276 IsEmpty]: Start isEmpty. Operand 13013 states and 21241 transitions. [2023-11-29 06:13:45,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-11-29 06:13:45,200 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:13:45,200 INFO L195 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] [2023-11-29 06:13:45,200 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-29 06:13:45,200 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:13:45,200 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:13:45,201 INFO L85 PathProgramCache]: Analyzing trace with hash -639885001, now seen corresponding path program 1 times [2023-11-29 06:13:45,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:13:45,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595990180] [2023-11-29 06:13:45,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:13:45,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:13:45,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:13:45,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 06:13:45,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:13:45,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-29 06:13:45,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:13:45,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-29 06:13:45,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:13:45,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-29 06:13:45,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:13:45,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-11-29 06:13:45,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:13:45,324 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:13:45,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:13:45,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1595990180] [2023-11-29 06:13:45,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1595990180] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:13:45,325 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:13:45,325 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 06:13:45,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692511740] [2023-11-29 06:13:45,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:13:45,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 06:13:45,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:13:45,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 06:13:45,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-29 06:13:45,326 INFO L87 Difference]: Start difference. First operand 13013 states and 21241 transitions. Second operand has 6 states, 6 states have (on average 13.5) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 06:13:47,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:13:47,342 INFO L93 Difference]: Finished difference Result 33124 states and 53179 transitions. [2023-11-29 06:13:47,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 06:13:47,343 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (5), 3 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 91 [2023-11-29 06:13:47,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:13:47,400 INFO L225 Difference]: With dead ends: 33124 [2023-11-29 06:13:47,400 INFO L226 Difference]: Without dead ends: 22244 [2023-11-29 06:13:47,429 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2023-11-29 06:13:47,429 INFO L413 NwaCegarLoop]: 4249 mSDtfsCounter, 4875 mSDsluCounter, 12381 mSDsCounter, 0 mSdLazyCounter, 1464 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4906 SdHoareTripleChecker+Valid, 16630 SdHoareTripleChecker+Invalid, 1543 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 1464 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-29 06:13:47,430 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4906 Valid, 16630 Invalid, 1543 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 1464 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-29 06:13:47,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22244 states. [2023-11-29 06:13:48,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22244 to 18457. [2023-11-29 06:13:48,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18457 states, 16617 states have (on average 1.5798278871035687) internal successors, (26252), 16748 states have internal predecessors, (26252), 1154 states have call successors, (1154), 588 states have call predecessors, (1154), 684 states have return successors, (2191), 1184 states have call predecessors, (2191), 1154 states have call successors, (2191) [2023-11-29 06:13:48,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18457 states to 18457 states and 29597 transitions. [2023-11-29 06:13:48,349 INFO L78 Accepts]: Start accepts. Automaton has 18457 states and 29597 transitions. Word has length 91 [2023-11-29 06:13:48,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:13:48,350 INFO L495 AbstractCegarLoop]: Abstraction has 18457 states and 29597 transitions. [2023-11-29 06:13:48,350 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 06:13:48,350 INFO L276 IsEmpty]: Start isEmpty. Operand 18457 states and 29597 transitions. [2023-11-29 06:13:48,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2023-11-29 06:13:48,381 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:13:48,381 INFO L195 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:13:48,381 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-29 06:13:48,381 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:13:48,382 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:13:48,382 INFO L85 PathProgramCache]: Analyzing trace with hash 239471349, now seen corresponding path program 1 times [2023-11-29 06:13:48,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:13:48,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1383851972] [2023-11-29 06:13:48,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:13:48,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:13:48,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:13:48,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 06:13:48,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:13:48,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-29 06:13:48,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:13:48,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-29 06:13:48,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:13:48,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-29 06:13:48,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:13:48,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-11-29 06:13:48,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:13:48,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-29 06:13:48,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:13:48,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-11-29 06:13:48,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:13:48,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2023-11-29 06:13:48,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:13:48,555 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-29 06:13:48,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:13:48,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1383851972] [2023-11-29 06:13:48,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1383851972] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:13:48,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1673216525] [2023-11-29 06:13:48,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:13:48,555 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:13:48,556 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fceb3d7-06c0-4a03-8a75-d5a1698fb7b6/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:13:48,559 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fceb3d7-06c0-4a03-8a75-d5a1698fb7b6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:13:48,560 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fceb3d7-06c0-4a03-8a75-d5a1698fb7b6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 06:13:48,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:13:48,720 INFO L262 TraceCheckSpWp]: Trace formula consists of 649 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 06:13:48,730 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:13:48,822 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-11-29 06:13:48,823 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 06:13:48,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1673216525] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:13:48,823 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 06:13:48,823 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 7 [2023-11-29 06:13:48,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951472515] [2023-11-29 06:13:48,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:13:48,824 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 06:13:48,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:13:48,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 06:13:48,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 06:13:48,825 INFO L87 Difference]: Start difference. First operand 18457 states and 29597 transitions. Second operand has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 2 states have internal predecessors, (109), 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) [2023-11-29 06:13:50,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:13:50,065 INFO L93 Difference]: Finished difference Result 50706 states and 80639 transitions. [2023-11-29 06:13:50,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 06:13:50,066 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 2 states have internal predecessors, (109), 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 147 [2023-11-29 06:13:50,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:13:50,137 INFO L225 Difference]: With dead ends: 50706 [2023-11-29 06:13:50,137 INFO L226 Difference]: Without dead ends: 34382 [2023-11-29 06:13:50,176 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 06:13:50,177 INFO L413 NwaCegarLoop]: 4218 mSDtfsCounter, 4191 mSDsluCounter, 239 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4191 SdHoareTripleChecker+Valid, 4457 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 06:13:50,177 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4191 Valid, 4457 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 06:13:50,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34382 states. [2023-11-29 06:13:51,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34382 to 34282. [2023-11-29 06:13:51,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34282 states, 30710 states have (on average 1.557896450667535) internal successors, (47843), 30970 states have internal predecessors, (47843), 2204 states have call successors, (2204), 1174 states have call predecessors, (2204), 1366 states have return successors, (4215), 2201 states have call predecessors, (4215), 2204 states have call successors, (4215) [2023-11-29 06:13:51,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34282 states to 34282 states and 54262 transitions. [2023-11-29 06:13:51,876 INFO L78 Accepts]: Start accepts. Automaton has 34282 states and 54262 transitions. Word has length 147 [2023-11-29 06:13:51,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:13:51,877 INFO L495 AbstractCegarLoop]: Abstraction has 34282 states and 54262 transitions. [2023-11-29 06:13:51,877 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 2 states have internal predecessors, (109), 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) [2023-11-29 06:13:51,877 INFO L276 IsEmpty]: Start isEmpty. Operand 34282 states and 54262 transitions. [2023-11-29 06:13:51,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2023-11-29 06:13:51,960 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:13:51,961 INFO L195 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:13:51,976 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fceb3d7-06c0-4a03-8a75-d5a1698fb7b6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 06:13:52,161 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fceb3d7-06c0-4a03-8a75-d5a1698fb7b6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:13:52,164 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:13:52,165 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:13:52,165 INFO L85 PathProgramCache]: Analyzing trace with hash -1225510413, now seen corresponding path program 1 times [2023-11-29 06:13:52,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:13:52,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563856695] [2023-11-29 06:13:52,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:13:52,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:13:52,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:13:52,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 06:13:52,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:13:52,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-29 06:13:52,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:13:52,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-29 06:13:52,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:13:52,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-29 06:13:52,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:13:52,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-11-29 06:13:52,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:13:52,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-29 06:13:52,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:13:52,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-11-29 06:13:52,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:13:52,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2023-11-29 06:13:52,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:13:52,353 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-29 06:13:52,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:13:52,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [563856695] [2023-11-29 06:13:52,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [563856695] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:13:52,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [221514179] [2023-11-29 06:13:52,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:13:52,354 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:13:52,354 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fceb3d7-06c0-4a03-8a75-d5a1698fb7b6/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:13:52,355 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fceb3d7-06c0-4a03-8a75-d5a1698fb7b6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:13:52,360 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fceb3d7-06c0-4a03-8a75-d5a1698fb7b6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 06:13:52,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:13:52,504 INFO L262 TraceCheckSpWp]: Trace formula consists of 643 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 06:13:52,510 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:13:52,582 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-29 06:13:52,582 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 06:13:52,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [221514179] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:13:52,583 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 06:13:52,583 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 7 [2023-11-29 06:13:52,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004657687] [2023-11-29 06:13:52,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:13:52,584 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 06:13:52,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:13:52,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 06:13:52,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 06:13:52,585 INFO L87 Difference]: Start difference. First operand 34282 states and 54262 transitions. Second operand has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 2 states have internal predecessors, (119), 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) [2023-11-29 06:13:54,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:13:54,808 INFO L93 Difference]: Finished difference Result 97981 states and 154794 transitions. [2023-11-29 06:13:54,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 06:13:54,808 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 2 states have internal predecessors, (119), 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 147 [2023-11-29 06:13:54,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:13:54,955 INFO L225 Difference]: With dead ends: 97981 [2023-11-29 06:13:54,956 INFO L226 Difference]: Without dead ends: 65832 [2023-11-29 06:13:55,011 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 06:13:55,011 INFO L413 NwaCegarLoop]: 4218 mSDtfsCounter, 4181 mSDsluCounter, 239 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4181 SdHoareTripleChecker+Valid, 4457 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 06:13:55,012 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4181 Valid, 4457 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 06:13:55,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65832 states. [2023-11-29 06:13:58,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65832 to 65634. [2023-11-29 06:13:58,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65634 states, 58600 states have (on average 1.543259385665529) internal successors, (90435), 59118 states have internal predecessors, (90435), 4302 states have call successors, (4302), 2346 states have call predecessors, (4302), 2730 states have return successors, (8261), 4233 states have call predecessors, (8261), 4302 states have call successors, (8261) [2023-11-29 06:13:58,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65634 states to 65634 states and 102998 transitions. [2023-11-29 06:13:58,290 INFO L78 Accepts]: Start accepts. Automaton has 65634 states and 102998 transitions. Word has length 147 [2023-11-29 06:13:58,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:13:58,290 INFO L495 AbstractCegarLoop]: Abstraction has 65634 states and 102998 transitions. [2023-11-29 06:13:58,290 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 2 states have internal predecessors, (119), 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) [2023-11-29 06:13:58,290 INFO L276 IsEmpty]: Start isEmpty. Operand 65634 states and 102998 transitions. [2023-11-29 06:13:58,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2023-11-29 06:13:58,348 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:13:58,349 INFO L195 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:13:58,354 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fceb3d7-06c0-4a03-8a75-d5a1698fb7b6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-29 06:13:58,549 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fceb3d7-06c0-4a03-8a75-d5a1698fb7b6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:13:58,550 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:13:58,550 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:13:58,550 INFO L85 PathProgramCache]: Analyzing trace with hash 1385782897, now seen corresponding path program 1 times [2023-11-29 06:13:58,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:13:58,550 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [376661905] [2023-11-29 06:13:58,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:13:58,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:13:58,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:13:58,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 06:13:58,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:13:58,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-29 06:13:58,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:13:58,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-29 06:13:58,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:13:58,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-29 06:13:58,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:13:58,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-11-29 06:13:58,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:13:58,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-29 06:13:58,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:13:58,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-11-29 06:13:58,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:13:58,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2023-11-29 06:13:58,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:13:58,705 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-29 06:13:58,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:13:58,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [376661905] [2023-11-29 06:13:58,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [376661905] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:13:58,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1636315789] [2023-11-29 06:13:58,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:13:58,706 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:13:58,706 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fceb3d7-06c0-4a03-8a75-d5a1698fb7b6/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:13:58,707 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fceb3d7-06c0-4a03-8a75-d5a1698fb7b6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:13:58,712 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fceb3d7-06c0-4a03-8a75-d5a1698fb7b6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 06:13:58,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:13:58,856 INFO L262 TraceCheckSpWp]: Trace formula consists of 637 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 06:13:58,859 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:13:58,911 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2023-11-29 06:13:58,911 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 06:13:58,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1636315789] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:13:58,912 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 06:13:58,912 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 7 [2023-11-29 06:13:58,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68444290] [2023-11-29 06:13:58,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:13:58,913 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 06:13:58,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:13:58,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 06:13:58,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 06:13:58,914 INFO L87 Difference]: Start difference. First operand 65634 states and 102998 transitions. Second operand has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 2 states have internal predecessors, (104), 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) [2023-11-29 06:14:03,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:14:03,183 INFO L93 Difference]: Finished difference Result 191433 states and 300920 transitions. [2023-11-29 06:14:03,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 06:14:03,184 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 2 states have internal predecessors, (104), 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 147 [2023-11-29 06:14:03,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:14:03,493 INFO L225 Difference]: With dead ends: 191433 [2023-11-29 06:14:03,493 INFO L226 Difference]: Without dead ends: 127932 [2023-11-29 06:14:03,596 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 06:14:03,597 INFO L413 NwaCegarLoop]: 4218 mSDtfsCounter, 4196 mSDsluCounter, 239 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4196 SdHoareTripleChecker+Valid, 4457 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 06:14:03,597 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4196 Valid, 4457 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 06:14:03,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127932 states. [2023-11-29 06:14:09,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127932 to 127538. [2023-11-29 06:14:09,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127538 states, 113688 states have (on average 1.533486383787207) internal successors, (174339), 114722 states have internal predecessors, (174339), 8394 states have call successors, (8394), 4686 states have call predecessors, (8394), 5454 states have return successors, (16249), 8193 states have call predecessors, (16249), 8394 states have call successors, (16249) [2023-11-29 06:14:10,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127538 states to 127538 states and 198982 transitions. [2023-11-29 06:14:10,197 INFO L78 Accepts]: Start accepts. Automaton has 127538 states and 198982 transitions. Word has length 147 [2023-11-29 06:14:10,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:14:10,198 INFO L495 AbstractCegarLoop]: Abstraction has 127538 states and 198982 transitions. [2023-11-29 06:14:10,198 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 2 states have internal predecessors, (104), 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) [2023-11-29 06:14:10,198 INFO L276 IsEmpty]: Start isEmpty. Operand 127538 states and 198982 transitions. [2023-11-29 06:14:10,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2023-11-29 06:14:10,304 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:14:10,305 INFO L195 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:14:10,311 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fceb3d7-06c0-4a03-8a75-d5a1698fb7b6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-29 06:14:10,505 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fceb3d7-06c0-4a03-8a75-d5a1698fb7b6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-11-29 06:14:10,505 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:14:10,505 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:14:10,506 INFO L85 PathProgramCache]: Analyzing trace with hash 1883366963, now seen corresponding path program 1 times [2023-11-29 06:14:10,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:14:10,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [861634118] [2023-11-29 06:14:10,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:14:10,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:14:10,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:14:10,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 06:14:10,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:14:10,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-29 06:14:10,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:14:10,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-29 06:14:10,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:14:10,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-29 06:14:10,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:14:10,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-11-29 06:14:10,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:14:10,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-29 06:14:10,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:14:10,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-11-29 06:14:10,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:14:10,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2023-11-29 06:14:10,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:14:10,649 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-29 06:14:10,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:14:10,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [861634118] [2023-11-29 06:14:10,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [861634118] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:14:10,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [155663773] [2023-11-29 06:14:10,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:14:10,650 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:14:10,650 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fceb3d7-06c0-4a03-8a75-d5a1698fb7b6/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:14:10,651 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fceb3d7-06c0-4a03-8a75-d5a1698fb7b6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:14:10,653 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fceb3d7-06c0-4a03-8a75-d5a1698fb7b6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-29 06:14:10,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:14:10,784 INFO L262 TraceCheckSpWp]: Trace formula consists of 631 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 06:14:10,786 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:14:10,811 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-11-29 06:14:10,812 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 06:14:10,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [155663773] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:14:10,812 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 06:14:10,812 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2023-11-29 06:14:10,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935167177] [2023-11-29 06:14:10,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:14:10,813 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 06:14:10,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:14:10,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 06:14:10,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 06:14:10,814 INFO L87 Difference]: Start difference. First operand 127538 states and 198982 transitions. Second operand has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 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) [2023-11-29 06:14:20,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:14:20,339 INFO L93 Difference]: Finished difference Result 374301 states and 588521 transitions. [2023-11-29 06:14:20,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 06:14:20,340 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), 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 147 [2023-11-29 06:14:20,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:14:21,281 INFO L225 Difference]: With dead ends: 374301 [2023-11-29 06:14:21,281 INFO L226 Difference]: Without dead ends: 248897 [2023-11-29 06:14:21,440 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 06:14:21,440 INFO L413 NwaCegarLoop]: 4462 mSDtfsCounter, 255 mSDsluCounter, 4220 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 255 SdHoareTripleChecker+Valid, 8682 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 06:14:21,441 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [255 Valid, 8682 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 06:14:21,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248897 states. [2023-11-29 06:14:31,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248897 to 248897. [2023-11-29 06:14:31,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 248897 states, 221800 states have (on average 1.5256221821460776) internal successors, (338383), 223603 states have internal predecessors, (338383), 16223 states have call successors, (16223), 9336 states have call predecessors, (16223), 10872 states have return successors, (35056), 16085 states have call predecessors, (35056), 16223 states have call successors, (35056) [2023-11-29 06:14:32,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248897 states to 248897 states and 389662 transitions. [2023-11-29 06:14:32,829 INFO L78 Accepts]: Start accepts. Automaton has 248897 states and 389662 transitions. Word has length 147 [2023-11-29 06:14:32,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:14:32,830 INFO L495 AbstractCegarLoop]: Abstraction has 248897 states and 389662 transitions. [2023-11-29 06:14:32,830 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 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) [2023-11-29 06:14:32,830 INFO L276 IsEmpty]: Start isEmpty. Operand 248897 states and 389662 transitions. [2023-11-29 06:14:33,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2023-11-29 06:14:33,588 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:14:33,588 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:14:33,593 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fceb3d7-06c0-4a03-8a75-d5a1698fb7b6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-29 06:14:33,788 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fceb3d7-06c0-4a03-8a75-d5a1698fb7b6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:14:33,789 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:14:33,789 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:14:33,789 INFO L85 PathProgramCache]: Analyzing trace with hash 1793115962, now seen corresponding path program 1 times [2023-11-29 06:14:33,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:14:33,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [499364224] [2023-11-29 06:14:33,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:14:33,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:14:33,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:14:33,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 06:14:33,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:14:33,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-29 06:14:33,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:14:33,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-29 06:14:33,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:14:33,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-29 06:14:33,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:14:33,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-11-29 06:14:33,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:14:33,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-29 06:14:33,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:14:33,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-11-29 06:14:33,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:14:33,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2023-11-29 06:14:33,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:14:33,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-11-29 06:14:33,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:14:33,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2023-11-29 06:14:33,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:14:33,964 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2023-11-29 06:14:33,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:14:33,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [499364224] [2023-11-29 06:14:33,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [499364224] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:14:33,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1127581166] [2023-11-29 06:14:33,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:14:33,966 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:14:33,966 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fceb3d7-06c0-4a03-8a75-d5a1698fb7b6/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:14:33,967 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fceb3d7-06c0-4a03-8a75-d5a1698fb7b6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:14:33,970 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fceb3d7-06c0-4a03-8a75-d5a1698fb7b6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-29 06:14:34,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:14:34,136 INFO L262 TraceCheckSpWp]: Trace formula consists of 786 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 06:14:34,139 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:14:34,287 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 76 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-11-29 06:14:34,287 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 06:14:34,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1127581166] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:14:34,287 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 06:14:34,288 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 7 [2023-11-29 06:14:34,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231671376] [2023-11-29 06:14:34,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:14:34,288 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 06:14:34,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:14:34,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 06:14:34,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 06:14:34,289 INFO L87 Difference]: Start difference. First operand 248897 states and 389662 transitions. Second operand has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 2 states have internal predecessors, (139), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-29 06:14:53,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:14:53,384 INFO L93 Difference]: Finished difference Result 737455 states and 1161703 transitions. [2023-11-29 06:14:53,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 06:14:53,384 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 2 states have internal predecessors, (139), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 190 [2023-11-29 06:14:53,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:14:55,343 INFO L225 Difference]: With dead ends: 737455 [2023-11-29 06:14:55,343 INFO L226 Difference]: Without dead ends: 490699 [2023-11-29 06:14:55,892 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 209 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 06:14:55,893 INFO L413 NwaCegarLoop]: 4218 mSDtfsCounter, 4133 mSDsluCounter, 239 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4133 SdHoareTripleChecker+Valid, 4457 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 06:14:55,893 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4133 Valid, 4457 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 06:14:56,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 490699 states. [2023-11-29 06:15:16,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 490699 to 489129. [2023-11-29 06:15:17,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 489129 states, 435888 states have (on average 1.5198927247366296) internal successors, (662503), 439491 states have internal predecessors, (662503), 31567 states have call successors, (31567), 18600 states have call predecessors, (31567), 21672 states have return successors, (68652), 31165 states have call predecessors, (68652), 31567 states have call successors, (68652) [2023-11-29 06:15:19,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 489129 states to 489129 states and 762722 transitions. [2023-11-29 06:15:19,787 INFO L78 Accepts]: Start accepts. Automaton has 489129 states and 762722 transitions. Word has length 190 [2023-11-29 06:15:19,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:15:19,787 INFO L495 AbstractCegarLoop]: Abstraction has 489129 states and 762722 transitions. [2023-11-29 06:15:19,787 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 2 states have internal predecessors, (139), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-29 06:15:19,787 INFO L276 IsEmpty]: Start isEmpty. Operand 489129 states and 762722 transitions. [2023-11-29 06:15:21,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2023-11-29 06:15:21,094 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:15:21,095 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:15:21,100 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fceb3d7-06c0-4a03-8a75-d5a1698fb7b6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-29 06:15:21,295 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fceb3d7-06c0-4a03-8a75-d5a1698fb7b6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-29 06:15:21,295 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:15:21,296 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:15:21,296 INFO L85 PathProgramCache]: Analyzing trace with hash -793433533, now seen corresponding path program 1 times [2023-11-29 06:15:21,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:15:21,296 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142626579] [2023-11-29 06:15:21,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:15:21,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:15:21,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:15:21,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 06:15:21,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:15:21,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-29 06:15:21,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:15:21,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-29 06:15:21,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:15:21,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-29 06:15:21,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:15:21,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-11-29 06:15:21,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:15:21,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-29 06:15:21,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:15:21,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-11-29 06:15:21,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:15:21,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2023-11-29 06:15:21,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:15:21,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-11-29 06:15:21,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:15:21,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2023-11-29 06:15:21,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:15:21,466 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2023-11-29 06:15:21,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:15:21,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1142626579] [2023-11-29 06:15:21,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1142626579] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:15:21,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1346461787] [2023-11-29 06:15:21,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:15:21,466 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:15:21,467 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fceb3d7-06c0-4a03-8a75-d5a1698fb7b6/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:15:21,467 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fceb3d7-06c0-4a03-8a75-d5a1698fb7b6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:15:21,470 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fceb3d7-06c0-4a03-8a75-d5a1698fb7b6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-29 06:15:21,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:15:21,637 INFO L262 TraceCheckSpWp]: Trace formula consists of 786 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 06:15:21,641 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:15:21,791 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 76 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-11-29 06:15:21,791 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 06:15:21,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1346461787] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:15:21,792 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 06:15:21,792 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 7 [2023-11-29 06:15:21,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26226612] [2023-11-29 06:15:21,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:15:21,793 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 06:15:21,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:15:21,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 06:15:21,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 06:15:21,794 INFO L87 Difference]: Start difference. First operand 489129 states and 762722 transitions. Second operand has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 2 states have internal predecessors, (139), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10)