./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.10.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e7bb482b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d63c1953-ecf5-4557-bf62-f0ac474d81ea/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d63c1953-ecf5-4557-bf62-f0ac474d81ea/bin/uautomizer-verify-WvqO1wxjHP/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d63c1953-ecf5-4557-bf62-f0ac474d81ea/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d63c1953-ecf5-4557-bf62-f0ac474d81ea/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.10.cil-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d63c1953-ecf5-4557-bf62-f0ac474d81ea/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d63c1953-ecf5-4557-bf62-f0ac474d81ea/bin/uautomizer-verify-WvqO1wxjHP --witnessprinter.witness.filename witness.graphml --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 dbdff9d5cdb7ffcae57151b3d045900600728670d8aad942a459f8d05b6221fb --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 23:07:10,196 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 23:07:10,285 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d63c1953-ecf5-4557-bf62-f0ac474d81ea/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-06 23:07:10,293 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 23:07:10,293 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 23:07:10,328 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 23:07:10,329 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 23:07:10,329 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 23:07:10,330 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 23:07:10,331 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 23:07:10,332 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 23:07:10,333 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 23:07:10,334 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 23:07:10,335 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 23:07:10,335 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 23:07:10,336 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 23:07:10,337 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 23:07:10,337 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 23:07:10,338 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 23:07:10,339 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 23:07:10,340 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 23:07:10,341 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 23:07:10,341 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 23:07:10,342 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 23:07:10,343 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 23:07:10,344 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 23:07:10,344 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 23:07:10,345 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 23:07:10,346 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 23:07:10,346 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 23:07:10,347 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 23:07:10,348 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 23:07:10,348 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 23:07:10,349 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 23:07:10,349 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 23:07:10,350 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 23:07:10,350 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 23:07:10,351 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 23:07:10,351 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 23:07:10,352 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_d63c1953-ecf5-4557-bf62-f0ac474d81ea/bin/uautomizer-verify-WvqO1wxjHP/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d63c1953-ecf5-4557-bf62-f0ac474d81ea/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dbdff9d5cdb7ffcae57151b3d045900600728670d8aad942a459f8d05b6221fb [2023-11-06 23:07:10,691 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 23:07:10,732 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 23:07:10,736 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 23:07:10,738 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 23:07:10,739 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 23:07:10,741 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d63c1953-ecf5-4557-bf62-f0ac474d81ea/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.10.cil-2.c [2023-11-06 23:07:14,361 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 23:07:14,785 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 23:07:14,786 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d63c1953-ecf5-4557-bf62-f0ac474d81ea/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.10.cil-2.c [2023-11-06 23:07:14,811 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d63c1953-ecf5-4557-bf62-f0ac474d81ea/bin/uautomizer-verify-WvqO1wxjHP/data/ee430849e/ee2352b1d87c4fc19284ae8d12e913e7/FLAG384c3145c [2023-11-06 23:07:14,829 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d63c1953-ecf5-4557-bf62-f0ac474d81ea/bin/uautomizer-verify-WvqO1wxjHP/data/ee430849e/ee2352b1d87c4fc19284ae8d12e913e7 [2023-11-06 23:07:14,833 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 23:07:14,835 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 23:07:14,837 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 23:07:14,837 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 23:07:14,844 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 23:07:14,845 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 11:07:14" (1/1) ... [2023-11-06 23:07:14,846 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b82a85d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:07:14, skipping insertion in model container [2023-11-06 23:07:14,847 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 11:07:14" (1/1) ... [2023-11-06 23:07:14,926 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 23:07:15,168 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_d63c1953-ecf5-4557-bf62-f0ac474d81ea/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.10.cil-2.c[914,927] [2023-11-06 23:07:15,251 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_d63c1953-ecf5-4557-bf62-f0ac474d81ea/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.10.cil-2.c[7115,7128] [2023-11-06 23:07:15,438 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 23:07:15,468 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 23:07:15,482 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_d63c1953-ecf5-4557-bf62-f0ac474d81ea/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.10.cil-2.c[914,927] [2023-11-06 23:07:15,537 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_d63c1953-ecf5-4557-bf62-f0ac474d81ea/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.10.cil-2.c[7115,7128] [2023-11-06 23:07:15,631 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 23:07:15,676 INFO L206 MainTranslator]: Completed translation [2023-11-06 23:07:15,678 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:07:15 WrapperNode [2023-11-06 23:07:15,678 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 23:07:15,680 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 23:07:15,680 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 23:07:15,680 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 23:07:15,690 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:07:15" (1/1) ... [2023-11-06 23:07:15,716 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:07:15" (1/1) ... [2023-11-06 23:07:15,788 INFO L138 Inliner]: procedures = 73, calls = 87, calls flagged for inlining = 42, calls inlined = 42, statements flattened = 950 [2023-11-06 23:07:15,789 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 23:07:15,790 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 23:07:15,790 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 23:07:15,790 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 23:07:15,802 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:07:15" (1/1) ... [2023-11-06 23:07:15,802 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:07:15" (1/1) ... [2023-11-06 23:07:15,809 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:07:15" (1/1) ... [2023-11-06 23:07:15,810 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:07:15" (1/1) ... [2023-11-06 23:07:15,832 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:07:15" (1/1) ... [2023-11-06 23:07:15,862 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:07:15" (1/1) ... [2023-11-06 23:07:15,868 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:07:15" (1/1) ... [2023-11-06 23:07:15,874 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:07:15" (1/1) ... [2023-11-06 23:07:15,890 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 23:07:15,892 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 23:07:15,892 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 23:07:15,892 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 23:07:15,894 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:07:15" (1/1) ... [2023-11-06 23:07:15,919 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 23:07:15,939 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d63c1953-ecf5-4557-bf62-f0ac474d81ea/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:07:15,956 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d63c1953-ecf5-4557-bf62-f0ac474d81ea/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 23:07:15,978 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d63c1953-ecf5-4557-bf62-f0ac474d81ea/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 23:07:16,013 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 23:07:16,013 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2023-11-06 23:07:16,014 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2023-11-06 23:07:16,014 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_write_p_triggered [2023-11-06 23:07:16,014 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_write_p_triggered [2023-11-06 23:07:16,016 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2023-11-06 23:07:16,016 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2023-11-06 23:07:16,016 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2023-11-06 23:07:16,017 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2023-11-06 23:07:16,019 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events1 [2023-11-06 23:07:16,019 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events1 [2023-11-06 23:07:16,020 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2023-11-06 23:07:16,020 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2023-11-06 23:07:16,020 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2023-11-06 23:07:16,021 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2023-11-06 23:07:16,021 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads1 [2023-11-06 23:07:16,021 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads1 [2023-11-06 23:07:16,021 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_read_c_triggered [2023-11-06 23:07:16,022 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_read_c_triggered [2023-11-06 23:07:16,022 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels1 [2023-11-06 23:07:16,022 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels1 [2023-11-06 23:07:16,023 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2023-11-06 23:07:16,024 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2023-11-06 23:07:16,024 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 23:07:16,024 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2023-11-06 23:07:16,025 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2023-11-06 23:07:16,025 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events1 [2023-11-06 23:07:16,025 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events1 [2023-11-06 23:07:16,026 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 23:07:16,027 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 23:07:16,027 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2023-11-06 23:07:16,027 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2023-11-06 23:07:16,251 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 23:07:16,254 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 23:07:17,558 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 23:07:17,582 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 23:07:17,582 INFO L302 CfgBuilder]: Removed 17 assume(true) statements. [2023-11-06 23:07:17,587 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 11:07:17 BoogieIcfgContainer [2023-11-06 23:07:17,587 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 23:07:17,593 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 23:07:17,593 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 23:07:17,598 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 23:07:17,598 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 11:07:14" (1/3) ... [2023-11-06 23:07:17,599 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d73f42d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 11:07:17, skipping insertion in model container [2023-11-06 23:07:17,599 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:07:15" (2/3) ... [2023-11-06 23:07:17,602 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d73f42d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 11:07:17, skipping insertion in model container [2023-11-06 23:07:17,602 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 11:07:17" (3/3) ... [2023-11-06 23:07:17,604 INFO L112 eAbstractionObserver]: Analyzing ICFG pc_sfifo_2.cil-1+token_ring.10.cil-2.c [2023-11-06 23:07:17,630 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 23:07:17,630 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-06 23:07:17,732 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 23:07:17,741 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=LoopsAndPotentialCycles, 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;@727e68c3, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 23:07:17,741 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-11-06 23:07:17,756 INFO L276 IsEmpty]: Start isEmpty. Operand has 444 states, 389 states have (on average 1.6143958868894601) internal successors, (628), 395 states have internal predecessors, (628), 38 states have call successors, (38), 14 states have call predecessors, (38), 14 states have return successors, (38), 37 states have call predecessors, (38), 38 states have call successors, (38) [2023-11-06 23:07:17,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-11-06 23:07:17,781 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:07:17,783 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] [2023-11-06 23:07:17,783 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 23:07:17,799 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:07:17,800 INFO L85 PathProgramCache]: Analyzing trace with hash -1754405048, now seen corresponding path program 1 times [2023-11-06 23:07:17,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:07:17,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [881450604] [2023-11-06 23:07:17,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:07:17,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:07:17,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:18,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 23:07:18,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:18,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-06 23:07:18,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:18,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-06 23:07:18,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:18,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 23:07:18,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:18,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-06 23:07:18,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:18,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-06 23:07:18,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:18,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-06 23:07:18,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:18,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:07:18,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:07:18,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [881450604] [2023-11-06 23:07:18,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [881450604] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:07:18,486 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:07:18,487 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-06 23:07:18,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333509587] [2023-11-06 23:07:18,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:07:18,496 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-06 23:07:18,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:07:18,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-06 23:07:18,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-11-06 23:07:18,538 INFO L87 Difference]: Start difference. First operand has 444 states, 389 states have (on average 1.6143958868894601) internal successors, (628), 395 states have internal predecessors, (628), 38 states have call successors, (38), 14 states have call predecessors, (38), 14 states have return successors, (38), 37 states have call predecessors, (38), 38 states have call successors, (38) Second operand has 8 states, 8 states have (on average 6.25) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-11-06 23:07:20,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:07:20,542 INFO L93 Difference]: Finished difference Result 997 states and 1570 transitions. [2023-11-06 23:07:20,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-06 23:07:20,544 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 65 [2023-11-06 23:07:20,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:07:20,562 INFO L225 Difference]: With dead ends: 997 [2023-11-06 23:07:20,563 INFO L226 Difference]: Without dead ends: 569 [2023-11-06 23:07:20,570 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2023-11-06 23:07:20,574 INFO L413 NwaCegarLoop]: 383 mSDtfsCounter, 1089 mSDsluCounter, 1263 mSDsCounter, 0 mSdLazyCounter, 1198 mSolverCounterSat, 171 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1094 SdHoareTripleChecker+Valid, 1646 SdHoareTripleChecker+Invalid, 1369 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 171 IncrementalHoareTripleChecker+Valid, 1198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-11-06 23:07:20,575 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1094 Valid, 1646 Invalid, 1369 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [171 Valid, 1198 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-11-06 23:07:20,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 569 states. [2023-11-06 23:07:20,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 569 to 530. [2023-11-06 23:07:20,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 530 states, 457 states have (on average 1.5032822757111597) internal successors, (687), 463 states have internal predecessors, (687), 49 states have call successors, (49), 21 states have call predecessors, (49), 22 states have return successors, (52), 48 states have call predecessors, (52), 47 states have call successors, (52) [2023-11-06 23:07:20,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 530 states to 530 states and 788 transitions. [2023-11-06 23:07:20,703 INFO L78 Accepts]: Start accepts. Automaton has 530 states and 788 transitions. Word has length 65 [2023-11-06 23:07:20,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:07:20,704 INFO L495 AbstractCegarLoop]: Abstraction has 530 states and 788 transitions. [2023-11-06 23:07:20,704 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-11-06 23:07:20,705 INFO L276 IsEmpty]: Start isEmpty. Operand 530 states and 788 transitions. [2023-11-06 23:07:20,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-11-06 23:07:20,710 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:07:20,710 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] [2023-11-06 23:07:20,711 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 23:07:20,711 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 23:07:20,712 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:07:20,712 INFO L85 PathProgramCache]: Analyzing trace with hash -1350619097, now seen corresponding path program 1 times [2023-11-06 23:07:20,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:07:20,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [608541877] [2023-11-06 23:07:20,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:07:20,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:07:20,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:20,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 23:07:20,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:21,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-06 23:07:21,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:21,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-06 23:07:21,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:21,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 23:07:21,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:21,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-06 23:07:21,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:21,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-06 23:07:21,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:21,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-06 23:07:21,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:21,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:07:21,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:07:21,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [608541877] [2023-11-06 23:07:21,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [608541877] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:07:21,127 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:07:21,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-06 23:07:21,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103888498] [2023-11-06 23:07:21,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:07:21,130 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-06 23:07:21,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:07:21,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-06 23:07:21,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-11-06 23:07:21,134 INFO L87 Difference]: Start difference. First operand 530 states and 788 transitions. Second operand has 8 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-11-06 23:07:22,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:07:22,832 INFO L93 Difference]: Finished difference Result 877 states and 1265 transitions. [2023-11-06 23:07:22,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-06 23:07:22,834 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 65 [2023-11-06 23:07:22,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:07:22,846 INFO L225 Difference]: With dead ends: 877 [2023-11-06 23:07:22,846 INFO L226 Difference]: Without dead ends: 700 [2023-11-06 23:07:22,854 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2023-11-06 23:07:22,859 INFO L413 NwaCegarLoop]: 408 mSDtfsCounter, 1610 mSDsluCounter, 1434 mSDsCounter, 0 mSdLazyCounter, 1470 mSolverCounterSat, 171 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1639 SdHoareTripleChecker+Valid, 1842 SdHoareTripleChecker+Invalid, 1641 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 171 IncrementalHoareTripleChecker+Valid, 1470 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-11-06 23:07:22,860 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1639 Valid, 1842 Invalid, 1641 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [171 Valid, 1470 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-11-06 23:07:22,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 700 states. [2023-11-06 23:07:23,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 700 to 626. [2023-11-06 23:07:23,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 626 states, 533 states have (on average 1.4840525328330207) internal successors, (791), 541 states have internal predecessors, (791), 60 states have call successors, (60), 28 states have call predecessors, (60), 31 states have return successors, (71), 60 states have call predecessors, (71), 58 states have call successors, (71) [2023-11-06 23:07:23,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 626 states to 626 states and 922 transitions. [2023-11-06 23:07:23,025 INFO L78 Accepts]: Start accepts. Automaton has 626 states and 922 transitions. Word has length 65 [2023-11-06 23:07:23,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:07:23,026 INFO L495 AbstractCegarLoop]: Abstraction has 626 states and 922 transitions. [2023-11-06 23:07:23,026 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-11-06 23:07:23,026 INFO L276 IsEmpty]: Start isEmpty. Operand 626 states and 922 transitions. [2023-11-06 23:07:23,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-11-06 23:07:23,032 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:07:23,032 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] [2023-11-06 23:07:23,032 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-06 23:07:23,033 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 23:07:23,033 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:07:23,033 INFO L85 PathProgramCache]: Analyzing trace with hash 915762089, now seen corresponding path program 1 times [2023-11-06 23:07:23,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:07:23,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1009438226] [2023-11-06 23:07:23,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:07:23,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:07:23,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:23,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 23:07:23,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:23,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-06 23:07:23,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:23,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-06 23:07:23,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:23,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 23:07:23,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:23,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-06 23:07:23,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:23,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-06 23:07:23,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:23,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-06 23:07:23,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:23,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:07:23,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:07:23,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1009438226] [2023-11-06 23:07:23,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1009438226] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:07:23,237 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:07:23,237 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-06 23:07:23,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175542121] [2023-11-06 23:07:23,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:07:23,238 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-06 23:07:23,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:07:23,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-06 23:07:23,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-11-06 23:07:23,240 INFO L87 Difference]: Start difference. First operand 626 states and 922 transitions. Second operand has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-06 23:07:24,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:07:24,988 INFO L93 Difference]: Finished difference Result 927 states and 1336 transitions. [2023-11-06 23:07:24,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-06 23:07:24,989 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 65 [2023-11-06 23:07:24,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:07:24,996 INFO L225 Difference]: With dead ends: 927 [2023-11-06 23:07:24,996 INFO L226 Difference]: Without dead ends: 660 [2023-11-06 23:07:24,998 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-11-06 23:07:24,999 INFO L413 NwaCegarLoop]: 376 mSDtfsCounter, 855 mSDsluCounter, 1943 mSDsCounter, 0 mSdLazyCounter, 1725 mSolverCounterSat, 127 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 856 SdHoareTripleChecker+Valid, 2319 SdHoareTripleChecker+Invalid, 1852 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 127 IncrementalHoareTripleChecker+Valid, 1725 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-11-06 23:07:25,000 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [856 Valid, 2319 Invalid, 1852 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [127 Valid, 1725 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-11-06 23:07:25,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 660 states. [2023-11-06 23:07:25,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 660 to 631. [2023-11-06 23:07:25,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 631 states, 537 states have (on average 1.4767225325884543) internal successors, (793), 545 states have internal predecessors, (793), 60 states have call successors, (60), 28 states have call predecessors, (60), 32 states have return successors, (72), 61 states have call predecessors, (72), 58 states have call successors, (72) [2023-11-06 23:07:25,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 631 states to 631 states and 925 transitions. [2023-11-06 23:07:25,088 INFO L78 Accepts]: Start accepts. Automaton has 631 states and 925 transitions. Word has length 65 [2023-11-06 23:07:25,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:07:25,089 INFO L495 AbstractCegarLoop]: Abstraction has 631 states and 925 transitions. [2023-11-06 23:07:25,089 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-06 23:07:25,090 INFO L276 IsEmpty]: Start isEmpty. Operand 631 states and 925 transitions. [2023-11-06 23:07:25,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-11-06 23:07:25,097 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:07:25,098 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] [2023-11-06 23:07:25,098 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-06 23:07:25,098 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 23:07:25,099 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:07:25,099 INFO L85 PathProgramCache]: Analyzing trace with hash -113597209, now seen corresponding path program 1 times [2023-11-06 23:07:25,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:07:25,100 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1440796826] [2023-11-06 23:07:25,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:07:25,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:07:25,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:25,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 23:07:25,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:25,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-06 23:07:25,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:25,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-06 23:07:25,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:25,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 23:07:25,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:25,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-06 23:07:25,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:25,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-06 23:07:25,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:25,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-06 23:07:25,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:25,369 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:07:25,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:07:25,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1440796826] [2023-11-06 23:07:25,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1440796826] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:07:25,370 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:07:25,370 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-06 23:07:25,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747990470] [2023-11-06 23:07:25,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:07:25,374 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-06 23:07:25,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:07:25,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-06 23:07:25,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-11-06 23:07:25,377 INFO L87 Difference]: Start difference. First operand 631 states and 925 transitions. Second operand has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-06 23:07:26,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:07:26,922 INFO L93 Difference]: Finished difference Result 949 states and 1358 transitions. [2023-11-06 23:07:26,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-06 23:07:26,923 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 65 [2023-11-06 23:07:26,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:07:26,928 INFO L225 Difference]: With dead ends: 949 [2023-11-06 23:07:26,928 INFO L226 Difference]: Without dead ends: 677 [2023-11-06 23:07:26,929 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2023-11-06 23:07:26,931 INFO L413 NwaCegarLoop]: 374 mSDtfsCounter, 858 mSDsluCounter, 1943 mSDsCounter, 0 mSdLazyCounter, 1710 mSolverCounterSat, 128 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 860 SdHoareTripleChecker+Valid, 2317 SdHoareTripleChecker+Invalid, 1838 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 128 IncrementalHoareTripleChecker+Valid, 1710 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-06 23:07:26,932 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [860 Valid, 2317 Invalid, 1838 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [128 Valid, 1710 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-06 23:07:26,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 677 states. [2023-11-06 23:07:26,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 677 to 646. [2023-11-06 23:07:26,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 646 states, 549 states have (on average 1.4663023679417122) internal successors, (805), 557 states have internal predecessors, (805), 60 states have call successors, (60), 28 states have call predecessors, (60), 35 states have return successors, (75), 64 states have call predecessors, (75), 58 states have call successors, (75) [2023-11-06 23:07:26,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 646 states to 646 states and 940 transitions. [2023-11-06 23:07:26,987 INFO L78 Accepts]: Start accepts. Automaton has 646 states and 940 transitions. Word has length 65 [2023-11-06 23:07:26,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:07:26,988 INFO L495 AbstractCegarLoop]: Abstraction has 646 states and 940 transitions. [2023-11-06 23:07:26,988 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-06 23:07:26,988 INFO L276 IsEmpty]: Start isEmpty. Operand 646 states and 940 transitions. [2023-11-06 23:07:26,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-11-06 23:07:26,990 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:07:26,990 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] [2023-11-06 23:07:26,991 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-06 23:07:26,991 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 23:07:26,991 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:07:26,992 INFO L85 PathProgramCache]: Analyzing trace with hash 1272606185, now seen corresponding path program 1 times [2023-11-06 23:07:26,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:07:26,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1721340128] [2023-11-06 23:07:26,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:07:26,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:07:27,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:27,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 23:07:27,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:27,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-06 23:07:27,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:27,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-06 23:07:27,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:27,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 23:07:27,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:27,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-06 23:07:27,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:27,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-06 23:07:27,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:27,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-06 23:07:27,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:27,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:07:27,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:07:27,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1721340128] [2023-11-06 23:07:27,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1721340128] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:07:27,206 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:07:27,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-06 23:07:27,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217737544] [2023-11-06 23:07:27,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:07:27,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-06 23:07:27,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:07:27,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-06 23:07:27,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-11-06 23:07:27,209 INFO L87 Difference]: Start difference. First operand 646 states and 940 transitions. Second operand has 8 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-11-06 23:07:28,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:07:28,792 INFO L93 Difference]: Finished difference Result 1038 states and 1451 transitions. [2023-11-06 23:07:28,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-06 23:07:28,793 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 65 [2023-11-06 23:07:28,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:07:28,799 INFO L225 Difference]: With dead ends: 1038 [2023-11-06 23:07:28,799 INFO L226 Difference]: Without dead ends: 753 [2023-11-06 23:07:28,801 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=95, Invalid=247, Unknown=0, NotChecked=0, Total=342 [2023-11-06 23:07:28,804 INFO L413 NwaCegarLoop]: 365 mSDtfsCounter, 1588 mSDsluCounter, 1290 mSDsCounter, 0 mSdLazyCounter, 1413 mSolverCounterSat, 175 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1615 SdHoareTripleChecker+Valid, 1655 SdHoareTripleChecker+Invalid, 1588 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 175 IncrementalHoareTripleChecker+Valid, 1413 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-11-06 23:07:28,805 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1615 Valid, 1655 Invalid, 1588 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [175 Valid, 1413 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-11-06 23:07:28,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 753 states. [2023-11-06 23:07:28,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 753 to 658. [2023-11-06 23:07:28,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 658 states, 559 states have (on average 1.4579606440071555) internal successors, (815), 567 states have internal predecessors, (815), 61 states have call successors, (61), 29 states have call predecessors, (61), 36 states have return successors, (74), 65 states have call predecessors, (74), 59 states have call successors, (74) [2023-11-06 23:07:28,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 658 states to 658 states and 950 transitions. [2023-11-06 23:07:28,878 INFO L78 Accepts]: Start accepts. Automaton has 658 states and 950 transitions. Word has length 65 [2023-11-06 23:07:28,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:07:28,880 INFO L495 AbstractCegarLoop]: Abstraction has 658 states and 950 transitions. [2023-11-06 23:07:28,880 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-11-06 23:07:28,880 INFO L276 IsEmpty]: Start isEmpty. Operand 658 states and 950 transitions. [2023-11-06 23:07:28,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-11-06 23:07:28,883 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:07:28,883 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] [2023-11-06 23:07:28,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-06 23:07:28,884 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 23:07:28,885 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:07:28,885 INFO L85 PathProgramCache]: Analyzing trace with hash 1138592679, now seen corresponding path program 1 times [2023-11-06 23:07:28,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:07:28,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339477698] [2023-11-06 23:07:28,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:07:28,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:07:28,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:29,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 23:07:29,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:29,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-06 23:07:29,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:29,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-06 23:07:29,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:29,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 23:07:29,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:29,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-06 23:07:29,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:29,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-06 23:07:29,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:29,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-06 23:07:29,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:29,085 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:07:29,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:07:29,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [339477698] [2023-11-06 23:07:29,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [339477698] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:07:29,086 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:07:29,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-06 23:07:29,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462574412] [2023-11-06 23:07:29,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:07:29,088 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 23:07:29,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:07:29,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 23:07:29,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-06 23:07:29,089 INFO L87 Difference]: Start difference. First operand 658 states and 950 transitions. Second operand has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 4 states have internal predecessors, (50), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-11-06 23:07:30,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:07:30,167 INFO L93 Difference]: Finished difference Result 1300 states and 1797 transitions. [2023-11-06 23:07:30,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-06 23:07:30,168 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 4 states have internal predecessors, (50), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 65 [2023-11-06 23:07:30,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:07:30,180 INFO L225 Difference]: With dead ends: 1300 [2023-11-06 23:07:30,180 INFO L226 Difference]: Without dead ends: 1004 [2023-11-06 23:07:30,182 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2023-11-06 23:07:30,188 INFO L413 NwaCegarLoop]: 348 mSDtfsCounter, 1578 mSDsluCounter, 955 mSDsCounter, 0 mSdLazyCounter, 579 mSolverCounterSat, 174 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1608 SdHoareTripleChecker+Valid, 1303 SdHoareTripleChecker+Invalid, 753 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 174 IncrementalHoareTripleChecker+Valid, 579 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-06 23:07:30,189 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1608 Valid, 1303 Invalid, 753 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [174 Valid, 579 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-06 23:07:30,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1004 states. [2023-11-06 23:07:30,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1004 to 948. [2023-11-06 23:07:30,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 948 states, 783 states have (on average 1.4074074074074074) internal successors, (1102), 798 states have internal predecessors, (1102), 96 states have call successors, (96), 51 states have call predecessors, (96), 67 states have return successors, (131), 105 states have call predecessors, (131), 94 states have call successors, (131) [2023-11-06 23:07:30,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 948 states to 948 states and 1329 transitions. [2023-11-06 23:07:30,319 INFO L78 Accepts]: Start accepts. Automaton has 948 states and 1329 transitions. Word has length 65 [2023-11-06 23:07:30,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:07:30,320 INFO L495 AbstractCegarLoop]: Abstraction has 948 states and 1329 transitions. [2023-11-06 23:07:30,320 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 4 states have internal predecessors, (50), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-11-06 23:07:30,320 INFO L276 IsEmpty]: Start isEmpty. Operand 948 states and 1329 transitions. [2023-11-06 23:07:30,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-11-06 23:07:30,324 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:07:30,324 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] [2023-11-06 23:07:30,324 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-06 23:07:30,324 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 23:07:30,325 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:07:30,325 INFO L85 PathProgramCache]: Analyzing trace with hash 1619302963, now seen corresponding path program 1 times [2023-11-06 23:07:30,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:07:30,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873960998] [2023-11-06 23:07:30,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:07:30,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:07:30,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:30,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 23:07:30,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:30,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-06 23:07:30,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:30,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-06 23:07:30,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:30,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 23:07:30,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:30,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-06 23:07:30,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:30,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-06 23:07:30,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:30,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-06 23:07:30,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:30,442 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:07:30,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:07:30,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1873960998] [2023-11-06 23:07:30,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1873960998] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:07:30,443 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:07:30,443 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-06 23:07:30,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332947466] [2023-11-06 23:07:30,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:07:30,444 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 23:07:30,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:07:30,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 23:07:30,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-06 23:07:30,446 INFO L87 Difference]: Start difference. First operand 948 states and 1329 transitions. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-06 23:07:31,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:07:31,612 INFO L93 Difference]: Finished difference Result 2151 states and 2900 transitions. [2023-11-06 23:07:31,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-06 23:07:31,613 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 66 [2023-11-06 23:07:31,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:07:31,627 INFO L225 Difference]: With dead ends: 2151 [2023-11-06 23:07:31,627 INFO L226 Difference]: Without dead ends: 1544 [2023-11-06 23:07:31,630 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2023-11-06 23:07:31,634 INFO L413 NwaCegarLoop]: 371 mSDtfsCounter, 1081 mSDsluCounter, 900 mSDsCounter, 0 mSdLazyCounter, 725 mSolverCounterSat, 170 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1089 SdHoareTripleChecker+Valid, 1271 SdHoareTripleChecker+Invalid, 895 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 170 IncrementalHoareTripleChecker+Valid, 725 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-06 23:07:31,634 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1089 Valid, 1271 Invalid, 895 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [170 Valid, 725 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-06 23:07:31,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1544 states. [2023-11-06 23:07:31,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1544 to 1429. [2023-11-06 23:07:31,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1429 states, 1162 states have (on average 1.3623063683304648) internal successors, (1583), 1180 states have internal predecessors, (1583), 141 states have call successors, (141), 95 states have call predecessors, (141), 124 states have return successors, (203), 160 states have call predecessors, (203), 139 states have call successors, (203) [2023-11-06 23:07:31,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1429 states to 1429 states and 1927 transitions. [2023-11-06 23:07:31,812 INFO L78 Accepts]: Start accepts. Automaton has 1429 states and 1927 transitions. Word has length 66 [2023-11-06 23:07:31,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:07:31,813 INFO L495 AbstractCegarLoop]: Abstraction has 1429 states and 1927 transitions. [2023-11-06 23:07:31,814 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-06 23:07:31,814 INFO L276 IsEmpty]: Start isEmpty. Operand 1429 states and 1927 transitions. [2023-11-06 23:07:31,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-11-06 23:07:31,819 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:07:31,819 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] [2023-11-06 23:07:31,820 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-06 23:07:31,820 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 23:07:31,820 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:07:31,820 INFO L85 PathProgramCache]: Analyzing trace with hash -1217424674, now seen corresponding path program 1 times [2023-11-06 23:07:31,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:07:31,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [978608473] [2023-11-06 23:07:31,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:07:31,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:07:31,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:31,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 23:07:31,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:31,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-06 23:07:31,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:31,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-06 23:07:31,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:31,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 23:07:31,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:31,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-06 23:07:31,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:31,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-06 23:07:31,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:31,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-06 23:07:31,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:31,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:07:31,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:07:31,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [978608473] [2023-11-06 23:07:31,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [978608473] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:07:31,956 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:07:31,956 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-06 23:07:31,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532601081] [2023-11-06 23:07:31,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:07:31,957 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 23:07:31,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:07:31,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 23:07:31,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-06 23:07:31,958 INFO L87 Difference]: Start difference. First operand 1429 states and 1927 transitions. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-06 23:07:33,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:07:33,167 INFO L93 Difference]: Finished difference Result 3617 states and 4733 transitions. [2023-11-06 23:07:33,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-06 23:07:33,168 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 66 [2023-11-06 23:07:33,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:07:33,188 INFO L225 Difference]: With dead ends: 3617 [2023-11-06 23:07:33,188 INFO L226 Difference]: Without dead ends: 2549 [2023-11-06 23:07:33,193 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2023-11-06 23:07:33,195 INFO L413 NwaCegarLoop]: 372 mSDtfsCounter, 1261 mSDsluCounter, 936 mSDsCounter, 0 mSdLazyCounter, 527 mSolverCounterSat, 119 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1292 SdHoareTripleChecker+Valid, 1308 SdHoareTripleChecker+Invalid, 646 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 119 IncrementalHoareTripleChecker+Valid, 527 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-06 23:07:33,196 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1292 Valid, 1308 Invalid, 646 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [119 Valid, 527 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-06 23:07:33,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2549 states. [2023-11-06 23:07:33,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2549 to 2291. [2023-11-06 23:07:33,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2291 states, 1828 states have (on average 1.3183807439824946) internal successors, (2410), 1856 states have internal predecessors, (2410), 239 states have call successors, (239), 179 states have call predecessors, (239), 222 states have return successors, (339), 262 states have call predecessors, (339), 237 states have call successors, (339) [2023-11-06 23:07:33,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2291 states to 2291 states and 2988 transitions. [2023-11-06 23:07:33,542 INFO L78 Accepts]: Start accepts. Automaton has 2291 states and 2988 transitions. Word has length 66 [2023-11-06 23:07:33,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:07:33,543 INFO L495 AbstractCegarLoop]: Abstraction has 2291 states and 2988 transitions. [2023-11-06 23:07:33,543 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-06 23:07:33,544 INFO L276 IsEmpty]: Start isEmpty. Operand 2291 states and 2988 transitions. [2023-11-06 23:07:33,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-11-06 23:07:33,549 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:07:33,550 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] [2023-11-06 23:07:33,550 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-06 23:07:33,550 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 23:07:33,551 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:07:33,551 INFO L85 PathProgramCache]: Analyzing trace with hash -1398013582, now seen corresponding path program 1 times [2023-11-06 23:07:33,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:07:33,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [35397247] [2023-11-06 23:07:33,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:07:33,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:07:33,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:33,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 23:07:33,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:33,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-06 23:07:33,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:33,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-06 23:07:33,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:33,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 23:07:33,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:33,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-06 23:07:33,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:33,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-06 23:07:33,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:33,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-06 23:07:33,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:33,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:07:33,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:07:33,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [35397247] [2023-11-06 23:07:33,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [35397247] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:07:33,650 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:07:33,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-06 23:07:33,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418638496] [2023-11-06 23:07:33,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:07:33,651 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 23:07:33,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:07:33,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 23:07:33,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-06 23:07:33,653 INFO L87 Difference]: Start difference. First operand 2291 states and 2988 transitions. Second operand has 6 states, 6 states have (on average 9.5) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-06 23:07:34,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:07:34,902 INFO L93 Difference]: Finished difference Result 5201 states and 6638 transitions. [2023-11-06 23:07:34,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-06 23:07:34,902 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 72 [2023-11-06 23:07:34,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:07:34,928 INFO L225 Difference]: With dead ends: 5201 [2023-11-06 23:07:34,929 INFO L226 Difference]: Without dead ends: 3271 [2023-11-06 23:07:34,936 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2023-11-06 23:07:34,937 INFO L413 NwaCegarLoop]: 386 mSDtfsCounter, 1246 mSDsluCounter, 968 mSDsCounter, 0 mSdLazyCounter, 533 mSolverCounterSat, 110 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1277 SdHoareTripleChecker+Valid, 1354 SdHoareTripleChecker+Invalid, 643 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 110 IncrementalHoareTripleChecker+Valid, 533 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-06 23:07:34,937 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1277 Valid, 1354 Invalid, 643 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [110 Valid, 533 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-06 23:07:34,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3271 states. [2023-11-06 23:07:35,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3271 to 3023. [2023-11-06 23:07:35,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3023 states, 2396 states have (on average 1.2996661101836393) internal successors, (3114), 2432 states have internal predecessors, (3114), 319 states have call successors, (319), 249 states have call predecessors, (319), 306 states have return successors, (448), 348 states have call predecessors, (448), 317 states have call successors, (448) [2023-11-06 23:07:35,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3023 states to 3023 states and 3881 transitions. [2023-11-06 23:07:35,303 INFO L78 Accepts]: Start accepts. Automaton has 3023 states and 3881 transitions. Word has length 72 [2023-11-06 23:07:35,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:07:35,305 INFO L495 AbstractCegarLoop]: Abstraction has 3023 states and 3881 transitions. [2023-11-06 23:07:35,305 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-06 23:07:35,305 INFO L276 IsEmpty]: Start isEmpty. Operand 3023 states and 3881 transitions. [2023-11-06 23:07:35,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-11-06 23:07:35,308 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:07:35,308 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:07:35,308 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-06 23:07:35,308 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 23:07:35,309 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:07:35,309 INFO L85 PathProgramCache]: Analyzing trace with hash -905541691, now seen corresponding path program 1 times [2023-11-06 23:07:35,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:07:35,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213375874] [2023-11-06 23:07:35,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:07:35,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:07:35,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:35,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 23:07:35,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:35,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-06 23:07:35,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:35,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-06 23:07:35,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:35,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 23:07:35,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:35,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-06 23:07:35,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:35,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-06 23:07:35,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:35,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-06 23:07:35,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:35,438 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:07:35,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:07:35,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1213375874] [2023-11-06 23:07:35,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1213375874] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:07:35,439 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:07:35,439 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-06 23:07:35,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201147896] [2023-11-06 23:07:35,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:07:35,440 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 23:07:35,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:07:35,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 23:07:35,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-06 23:07:35,442 INFO L87 Difference]: Start difference. First operand 3023 states and 3881 transitions. Second operand has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2023-11-06 23:07:37,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:07:37,007 INFO L93 Difference]: Finished difference Result 3797 states and 4812 transitions. [2023-11-06 23:07:37,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-06 23:07:37,008 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 73 [2023-11-06 23:07:37,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:07:37,039 INFO L225 Difference]: With dead ends: 3797 [2023-11-06 23:07:37,039 INFO L226 Difference]: Without dead ends: 3794 [2023-11-06 23:07:37,042 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=69, Invalid=141, Unknown=0, NotChecked=0, Total=210 [2023-11-06 23:07:37,043 INFO L413 NwaCegarLoop]: 379 mSDtfsCounter, 1891 mSDsluCounter, 949 mSDsCounter, 0 mSdLazyCounter, 548 mSolverCounterSat, 266 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1901 SdHoareTripleChecker+Valid, 1328 SdHoareTripleChecker+Invalid, 814 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 266 IncrementalHoareTripleChecker+Valid, 548 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-06 23:07:37,044 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1901 Valid, 1328 Invalid, 814 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [266 Valid, 548 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-06 23:07:37,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3794 states. [2023-11-06 23:07:37,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3794 to 3517. [2023-11-06 23:07:37,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3517 states, 2781 states have (on average 1.2894642215030565) internal successors, (3586), 2822 states have internal predecessors, (3586), 369 states have call successors, (369), 293 states have call predecessors, (369), 365 states have return successors, (527), 408 states have call predecessors, (527), 368 states have call successors, (527) [2023-11-06 23:07:37,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3517 states to 3517 states and 4482 transitions. [2023-11-06 23:07:37,560 INFO L78 Accepts]: Start accepts. Automaton has 3517 states and 4482 transitions. Word has length 73 [2023-11-06 23:07:37,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:07:37,561 INFO L495 AbstractCegarLoop]: Abstraction has 3517 states and 4482 transitions. [2023-11-06 23:07:37,561 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2023-11-06 23:07:37,561 INFO L276 IsEmpty]: Start isEmpty. Operand 3517 states and 4482 transitions. [2023-11-06 23:07:37,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-11-06 23:07:37,564 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:07:37,564 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:07:37,564 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-06 23:07:37,565 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 23:07:37,565 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:07:37,566 INFO L85 PathProgramCache]: Analyzing trace with hash 1991681052, now seen corresponding path program 1 times [2023-11-06 23:07:37,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:07:37,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63949534] [2023-11-06 23:07:37,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:07:37,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:07:37,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:37,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 23:07:37,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:37,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-06 23:07:37,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:37,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-06 23:07:37,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:37,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 23:07:37,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:37,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-06 23:07:37,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:37,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-06 23:07:37,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:37,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-06 23:07:37,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:37,847 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:07:37,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:07:37,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [63949534] [2023-11-06 23:07:37,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [63949534] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 23:07:37,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [549281772] [2023-11-06 23:07:37,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:07:37,849 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:07:37,849 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d63c1953-ecf5-4557-bf62-f0ac474d81ea/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:07:37,855 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d63c1953-ecf5-4557-bf62-f0ac474d81ea/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 23:07:37,857 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d63c1953-ecf5-4557-bf62-f0ac474d81ea/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-06 23:07:38,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:38,027 INFO L262 TraceCheckSpWp]: Trace formula consists of 377 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-06 23:07:38,038 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:07:38,422 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:07:38,422 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 23:07:38,536 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:07:38,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [549281772] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 23:07:38,536 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 23:07:38,536 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5, 4] total 10 [2023-11-06 23:07:38,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026931998] [2023-11-06 23:07:38,537 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 23:07:38,537 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-06 23:07:38,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:07:38,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-06 23:07:38,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-11-06 23:07:38,539 INFO L87 Difference]: Start difference. First operand 3517 states and 4482 transitions. Second operand has 10 states, 10 states have (on average 12.0) internal successors, (120), 7 states have internal predecessors, (120), 4 states have call successors, (20), 6 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2023-11-06 23:07:41,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:07:41,437 INFO L93 Difference]: Finished difference Result 7958 states and 9968 transitions. [2023-11-06 23:07:41,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-11-06 23:07:41,438 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 12.0) internal successors, (120), 7 states have internal predecessors, (120), 4 states have call successors, (20), 6 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 74 [2023-11-06 23:07:41,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:07:41,495 INFO L225 Difference]: With dead ends: 7958 [2023-11-06 23:07:41,496 INFO L226 Difference]: Without dead ends: 7955 [2023-11-06 23:07:41,500 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 176 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 187 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=170, Invalid=642, Unknown=0, NotChecked=0, Total=812 [2023-11-06 23:07:41,501 INFO L413 NwaCegarLoop]: 463 mSDtfsCounter, 2051 mSDsluCounter, 1887 mSDsCounter, 0 mSdLazyCounter, 2182 mSolverCounterSat, 211 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2121 SdHoareTripleChecker+Valid, 2350 SdHoareTripleChecker+Invalid, 2393 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 211 IncrementalHoareTripleChecker+Valid, 2182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-11-06 23:07:41,501 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2121 Valid, 2350 Invalid, 2393 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [211 Valid, 2182 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-11-06 23:07:41,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7955 states. [2023-11-06 23:07:42,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7955 to 5307. [2023-11-06 23:07:42,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5307 states, 4185 states have (on average 1.281242532855436) internal successors, (5362), 4248 states have internal predecessors, (5362), 553 states have call successors, (553), 451 states have call predecessors, (553), 567 states have return successors, (805), 614 states have call predecessors, (805), 552 states have call successors, (805) [2023-11-06 23:07:42,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5307 states to 5307 states and 6720 transitions. [2023-11-06 23:07:42,333 INFO L78 Accepts]: Start accepts. Automaton has 5307 states and 6720 transitions. Word has length 74 [2023-11-06 23:07:42,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:07:42,334 INFO L495 AbstractCegarLoop]: Abstraction has 5307 states and 6720 transitions. [2023-11-06 23:07:42,334 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.0) internal successors, (120), 7 states have internal predecessors, (120), 4 states have call successors, (20), 6 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2023-11-06 23:07:42,334 INFO L276 IsEmpty]: Start isEmpty. Operand 5307 states and 6720 transitions. [2023-11-06 23:07:42,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-11-06 23:07:42,337 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:07:42,337 INFO L195 NwaCegarLoop]: trace histogram [3, 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] [2023-11-06 23:07:42,352 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d63c1953-ecf5-4557-bf62-f0ac474d81ea/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-06 23:07:42,552 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d63c1953-ecf5-4557-bf62-f0ac474d81ea/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-11-06 23:07:42,553 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 23:07:42,554 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:07:42,555 INFO L85 PathProgramCache]: Analyzing trace with hash 2005180421, now seen corresponding path program 2 times [2023-11-06 23:07:42,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:07:42,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1170305071] [2023-11-06 23:07:42,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:07:42,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:07:42,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:42,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 23:07:42,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:42,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-06 23:07:42,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:42,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-06 23:07:42,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:42,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 23:07:42,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:42,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-06 23:07:42,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:42,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-06 23:07:42,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:42,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-06 23:07:42,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:42,644 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:07:42,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:07:42,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1170305071] [2023-11-06 23:07:42,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1170305071] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:07:42,645 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:07:42,645 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-06 23:07:42,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210718637] [2023-11-06 23:07:42,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:07:42,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 23:07:42,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:07:42,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 23:07:42,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-06 23:07:42,647 INFO L87 Difference]: Start difference. First operand 5307 states and 6720 transitions. Second operand has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2023-11-06 23:07:44,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:07:44,094 INFO L93 Difference]: Finished difference Result 7989 states and 10093 transitions. [2023-11-06 23:07:44,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-06 23:07:44,095 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 77 [2023-11-06 23:07:44,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:07:44,136 INFO L225 Difference]: With dead ends: 7989 [2023-11-06 23:07:44,136 INFO L226 Difference]: Without dead ends: 3914 [2023-11-06 23:07:44,148 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2023-11-06 23:07:44,149 INFO L413 NwaCegarLoop]: 413 mSDtfsCounter, 1166 mSDsluCounter, 1027 mSDsCounter, 0 mSdLazyCounter, 622 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1200 SdHoareTripleChecker+Valid, 1440 SdHoareTripleChecker+Invalid, 716 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 622 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-06 23:07:44,149 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1200 Valid, 1440 Invalid, 716 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 622 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-06 23:07:44,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3914 states. [2023-11-06 23:07:44,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3914 to 3679. [2023-11-06 23:07:44,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3679 states, 2913 states have (on average 1.270854788877446) internal successors, (3702), 2954 states have internal predecessors, (3702), 385 states have call successors, (385), 307 states have call predecessors, (385), 379 states have return successors, (531), 424 states have call predecessors, (531), 384 states have call successors, (531) [2023-11-06 23:07:44,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3679 states to 3679 states and 4618 transitions. [2023-11-06 23:07:44,708 INFO L78 Accepts]: Start accepts. Automaton has 3679 states and 4618 transitions. Word has length 77 [2023-11-06 23:07:44,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:07:44,709 INFO L495 AbstractCegarLoop]: Abstraction has 3679 states and 4618 transitions. [2023-11-06 23:07:44,710 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2023-11-06 23:07:44,710 INFO L276 IsEmpty]: Start isEmpty. Operand 3679 states and 4618 transitions. [2023-11-06 23:07:44,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2023-11-06 23:07:44,714 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:07:44,714 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-06 23:07:44,714 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-06 23:07:44,715 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 23:07:44,715 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:07:44,715 INFO L85 PathProgramCache]: Analyzing trace with hash 928113294, now seen corresponding path program 1 times [2023-11-06 23:07:44,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:07:44,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828944555] [2023-11-06 23:07:44,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:07:44,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:07:44,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:44,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 23:07:44,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:44,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-06 23:07:44,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:44,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-06 23:07:44,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:44,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 23:07:44,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:44,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-06 23:07:44,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:44,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-06 23:07:44,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:44,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-06 23:07:44,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:44,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-11-06 23:07:44,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:44,891 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-06 23:07:44,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:07:44,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [828944555] [2023-11-06 23:07:44,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [828944555] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:07:44,892 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:07:44,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-06 23:07:44,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452263278] [2023-11-06 23:07:44,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:07:44,893 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-06 23:07:44,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:07:44,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-06 23:07:44,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-11-06 23:07:44,895 INFO L87 Difference]: Start difference. First operand 3679 states and 4618 transitions. Second operand has 8 states, 8 states have (on average 7.875) internal successors, (63), 5 states have internal predecessors, (63), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-11-06 23:07:47,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:07:47,633 INFO L93 Difference]: Finished difference Result 10551 states and 13035 transitions. [2023-11-06 23:07:47,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-11-06 23:07:47,634 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.875) internal successors, (63), 5 states have internal predecessors, (63), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 84 [2023-11-06 23:07:47,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:07:47,667 INFO L225 Difference]: With dead ends: 10551 [2023-11-06 23:07:47,667 INFO L226 Difference]: Without dead ends: 5914 [2023-11-06 23:07:47,679 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=131, Invalid=331, Unknown=0, NotChecked=0, Total=462 [2023-11-06 23:07:47,680 INFO L413 NwaCegarLoop]: 392 mSDtfsCounter, 1314 mSDsluCounter, 1314 mSDsCounter, 0 mSdLazyCounter, 1267 mSolverCounterSat, 239 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1329 SdHoareTripleChecker+Valid, 1706 SdHoareTripleChecker+Invalid, 1506 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 239 IncrementalHoareTripleChecker+Valid, 1267 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-11-06 23:07:47,681 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1329 Valid, 1706 Invalid, 1506 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [239 Valid, 1267 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-11-06 23:07:47,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5914 states. [2023-11-06 23:07:48,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5914 to 5594. [2023-11-06 23:07:48,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5594 states, 4371 states have (on average 1.2411347517730495) internal successors, (5425), 4455 states have internal predecessors, (5425), 589 states have call successors, (589), 481 states have call predecessors, (589), 632 states have return successors, (913), 664 states have call predecessors, (913), 588 states have call successors, (913) [2023-11-06 23:07:48,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5594 states to 5594 states and 6927 transitions. [2023-11-06 23:07:48,361 INFO L78 Accepts]: Start accepts. Automaton has 5594 states and 6927 transitions. Word has length 84 [2023-11-06 23:07:48,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:07:48,362 INFO L495 AbstractCegarLoop]: Abstraction has 5594 states and 6927 transitions. [2023-11-06 23:07:48,362 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.875) internal successors, (63), 5 states have internal predecessors, (63), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-11-06 23:07:48,362 INFO L276 IsEmpty]: Start isEmpty. Operand 5594 states and 6927 transitions. [2023-11-06 23:07:48,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-11-06 23:07:48,368 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:07:48,368 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-06 23:07:48,368 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-06 23:07:48,369 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 23:07:48,369 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:07:48,369 INFO L85 PathProgramCache]: Analyzing trace with hash 527509027, now seen corresponding path program 1 times [2023-11-06 23:07:48,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:07:48,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623713312] [2023-11-06 23:07:48,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:07:48,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:07:48,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:48,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 23:07:48,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:48,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-06 23:07:48,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:48,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-06 23:07:48,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:48,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 23:07:48,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:48,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-06 23:07:48,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:48,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-06 23:07:48,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:48,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-06 23:07:48,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:48,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-11-06 23:07:48,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:48,558 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-06 23:07:48,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:07:48,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1623713312] [2023-11-06 23:07:48,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1623713312] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:07:48,559 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:07:48,559 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-06 23:07:48,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071944389] [2023-11-06 23:07:48,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:07:48,560 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-06 23:07:48,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:07:48,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-06 23:07:48,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-11-06 23:07:48,562 INFO L87 Difference]: Start difference. First operand 5594 states and 6927 transitions. Second operand has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 6 states have internal predecessors, (74), 4 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-11-06 23:07:50,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:07:50,863 INFO L93 Difference]: Finished difference Result 9597 states and 11767 transitions. [2023-11-06 23:07:50,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-11-06 23:07:50,864 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 6 states have internal predecessors, (74), 4 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 93 [2023-11-06 23:07:50,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:07:50,896 INFO L225 Difference]: With dead ends: 9597 [2023-11-06 23:07:50,897 INFO L226 Difference]: Without dead ends: 5004 [2023-11-06 23:07:50,910 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=162, Invalid=540, Unknown=0, NotChecked=0, Total=702 [2023-11-06 23:07:50,910 INFO L413 NwaCegarLoop]: 378 mSDtfsCounter, 2250 mSDsluCounter, 1681 mSDsCounter, 0 mSdLazyCounter, 1499 mSolverCounterSat, 382 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2294 SdHoareTripleChecker+Valid, 2059 SdHoareTripleChecker+Invalid, 1881 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 382 IncrementalHoareTripleChecker+Valid, 1499 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-11-06 23:07:50,911 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2294 Valid, 2059 Invalid, 1881 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [382 Valid, 1499 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-11-06 23:07:50,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5004 states. [2023-11-06 23:07:51,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5004 to 4670. [2023-11-06 23:07:51,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4670 states, 3660 states have (on average 1.2360655737704918) internal successors, (4524), 3726 states have internal predecessors, (4524), 490 states have call successors, (490), 396 states have call predecessors, (490), 518 states have return successors, (691), 554 states have call predecessors, (691), 489 states have call successors, (691) [2023-11-06 23:07:51,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4670 states to 4670 states and 5705 transitions. [2023-11-06 23:07:51,777 INFO L78 Accepts]: Start accepts. Automaton has 4670 states and 5705 transitions. Word has length 93 [2023-11-06 23:07:51,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:07:51,778 INFO L495 AbstractCegarLoop]: Abstraction has 4670 states and 5705 transitions. [2023-11-06 23:07:51,778 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 6 states have internal predecessors, (74), 4 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-11-06 23:07:51,779 INFO L276 IsEmpty]: Start isEmpty. Operand 4670 states and 5705 transitions. [2023-11-06 23:07:51,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2023-11-06 23:07:51,789 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:07:51,789 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:07:51,789 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-06 23:07:51,790 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 23:07:51,790 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:07:51,790 INFO L85 PathProgramCache]: Analyzing trace with hash -166394784, now seen corresponding path program 1 times [2023-11-06 23:07:51,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:07:51,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1131972139] [2023-11-06 23:07:51,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:07:51,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:07:51,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:51,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 23:07:51,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:51,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-06 23:07:51,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:51,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-06 23:07:51,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:51,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 23:07:51,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:51,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-06 23:07:51,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:51,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-06 23:07:52,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:52,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-06 23:07:52,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:52,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-11-06 23:07:52,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:52,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-11-06 23:07:52,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:52,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-11-06 23:07:52,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:52,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-11-06 23:07:52,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:52,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 23:07:52,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:52,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-06 23:07:52,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:52,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-11-06 23:07:52,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:52,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2023-11-06 23:07:52,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:52,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-11-06 23:07:52,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:52,082 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 20 proven. 6 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2023-11-06 23:07:52,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:07:52,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1131972139] [2023-11-06 23:07:52,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1131972139] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 23:07:52,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1366617543] [2023-11-06 23:07:52,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:07:52,084 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:07:52,084 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d63c1953-ecf5-4557-bf62-f0ac474d81ea/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:07:52,085 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d63c1953-ecf5-4557-bf62-f0ac474d81ea/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 23:07:52,112 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d63c1953-ecf5-4557-bf62-f0ac474d81ea/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-06 23:07:52,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:52,299 INFO L262 TraceCheckSpWp]: Trace formula consists of 551 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-06 23:07:52,317 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:07:52,381 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 71 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-11-06 23:07:52,381 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 23:07:52,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1366617543] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:07:52,382 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 23:07:52,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 12 [2023-11-06 23:07:52,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473185866] [2023-11-06 23:07:52,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:07:52,386 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 23:07:52,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:07:52,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 23:07:52,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2023-11-06 23:07:52,388 INFO L87 Difference]: Start difference. First operand 4670 states and 5705 transitions. Second operand has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 5 states have internal predecessors, (106), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) [2023-11-06 23:07:52,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:07:52,794 INFO L93 Difference]: Finished difference Result 6836 states and 8328 transitions. [2023-11-06 23:07:52,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 23:07:52,795 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 5 states have internal predecessors, (106), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) Word has length 145 [2023-11-06 23:07:52,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:07:52,805 INFO L225 Difference]: With dead ends: 6836 [2023-11-06 23:07:52,806 INFO L226 Difference]: Without dead ends: 2531 [2023-11-06 23:07:52,817 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2023-11-06 23:07:52,818 INFO L413 NwaCegarLoop]: 653 mSDtfsCounter, 34 mSDsluCounter, 2572 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 3225 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 23:07:52,819 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 3225 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 23:07:52,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2531 states. [2023-11-06 23:07:53,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2531 to 2406. [2023-11-06 23:07:53,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2406 states, 1973 states have (on average 1.2519006588950836) internal successors, (2470), 1988 states have internal predecessors, (2470), 214 states have call successors, (214), 162 states have call predecessors, (214), 217 states have return successors, (298), 256 states have call predecessors, (298), 213 states have call successors, (298) [2023-11-06 23:07:53,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2406 states to 2406 states and 2982 transitions. [2023-11-06 23:07:53,144 INFO L78 Accepts]: Start accepts. Automaton has 2406 states and 2982 transitions. Word has length 145 [2023-11-06 23:07:53,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:07:53,145 INFO L495 AbstractCegarLoop]: Abstraction has 2406 states and 2982 transitions. [2023-11-06 23:07:53,145 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 5 states have internal predecessors, (106), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) [2023-11-06 23:07:53,145 INFO L276 IsEmpty]: Start isEmpty. Operand 2406 states and 2982 transitions. [2023-11-06 23:07:53,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2023-11-06 23:07:53,153 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:07:53,153 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:07:53,168 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d63c1953-ecf5-4557-bf62-f0ac474d81ea/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-06 23:07:53,361 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d63c1953-ecf5-4557-bf62-f0ac474d81ea/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-11-06 23:07:53,361 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 23:07:53,362 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:07:53,362 INFO L85 PathProgramCache]: Analyzing trace with hash 1258155462, now seen corresponding path program 1 times [2023-11-06 23:07:53,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:07:53,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440677432] [2023-11-06 23:07:53,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:07:53,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:07:53,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:53,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 23:07:53,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:53,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-06 23:07:53,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:53,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-06 23:07:53,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:53,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 23:07:53,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:53,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-06 23:07:53,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:53,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-06 23:07:53,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:53,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-06 23:07:53,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:53,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-11-06 23:07:53,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:53,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-11-06 23:07:53,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:53,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-11-06 23:07:53,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:53,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-11-06 23:07:53,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:53,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 23:07:53,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:53,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-06 23:07:53,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:53,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2023-11-06 23:07:53,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:53,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2023-11-06 23:07:53,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:53,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2023-11-06 23:07:53,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:53,481 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2023-11-06 23:07:53,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:07:53,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [440677432] [2023-11-06 23:07:53,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [440677432] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:07:53,482 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:07:53,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-06 23:07:53,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223273297] [2023-11-06 23:07:53,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:07:53,483 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 23:07:53,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:07:53,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 23:07:53,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-06 23:07:53,485 INFO L87 Difference]: Start difference. First operand 2406 states and 2982 transitions. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (13), 5 states have call predecessors, (13), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2023-11-06 23:07:54,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:07:54,591 INFO L93 Difference]: Finished difference Result 2471 states and 3050 transitions. [2023-11-06 23:07:54,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 23:07:54,591 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (13), 5 states have call predecessors, (13), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 147 [2023-11-06 23:07:54,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:07:54,599 INFO L225 Difference]: With dead ends: 2471 [2023-11-06 23:07:54,599 INFO L226 Difference]: Without dead ends: 2028 [2023-11-06 23:07:54,601 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2023-11-06 23:07:54,602 INFO L413 NwaCegarLoop]: 366 mSDtfsCounter, 949 mSDsluCounter, 857 mSDsCounter, 0 mSdLazyCounter, 644 mSolverCounterSat, 129 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 964 SdHoareTripleChecker+Valid, 1223 SdHoareTripleChecker+Invalid, 773 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 129 IncrementalHoareTripleChecker+Valid, 644 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-06 23:07:54,602 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [964 Valid, 1223 Invalid, 773 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [129 Valid, 644 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-06 23:07:54,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2028 states. [2023-11-06 23:07:54,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2028 to 1966. [2023-11-06 23:07:54,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1966 states, 1629 states have (on average 1.2682627378759976) internal successors, (2066), 1641 states have internal predecessors, (2066), 168 states have call successors, (168), 122 states have call predecessors, (168), 167 states have return successors, (234), 203 states have call predecessors, (234), 167 states have call successors, (234) [2023-11-06 23:07:54,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1966 states to 1966 states and 2468 transitions. [2023-11-06 23:07:54,900 INFO L78 Accepts]: Start accepts. Automaton has 1966 states and 2468 transitions. Word has length 147 [2023-11-06 23:07:54,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:07:54,901 INFO L495 AbstractCegarLoop]: Abstraction has 1966 states and 2468 transitions. [2023-11-06 23:07:54,901 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (13), 5 states have call predecessors, (13), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2023-11-06 23:07:54,901 INFO L276 IsEmpty]: Start isEmpty. Operand 1966 states and 2468 transitions. [2023-11-06 23:07:54,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2023-11-06 23:07:54,907 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:07:54,908 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:07:54,908 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-06 23:07:54,908 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 23:07:54,909 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:07:54,909 INFO L85 PathProgramCache]: Analyzing trace with hash -1864756639, now seen corresponding path program 1 times [2023-11-06 23:07:54,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:07:54,909 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1658166031] [2023-11-06 23:07:54,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:07:54,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:07:54,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:55,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 23:07:55,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:55,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-06 23:07:55,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:55,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-06 23:07:55,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:55,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 23:07:55,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:55,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-06 23:07:55,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:55,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-06 23:07:55,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:55,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-06 23:07:55,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:55,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-11-06 23:07:55,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:55,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-11-06 23:07:55,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:55,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-11-06 23:07:55,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:55,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2023-11-06 23:07:55,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:55,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 23:07:55,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:55,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-06 23:07:55,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:55,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-11-06 23:07:55,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:55,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2023-11-06 23:07:55,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:55,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2023-11-06 23:07:55,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:55,091 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2023-11-06 23:07:55,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:07:55,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1658166031] [2023-11-06 23:07:55,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1658166031] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:07:55,092 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:07:55,092 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-06 23:07:55,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614616189] [2023-11-06 23:07:55,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:07:55,094 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 23:07:55,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:07:55,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 23:07:55,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-06 23:07:55,096 INFO L87 Difference]: Start difference. First operand 1966 states and 2468 transitions. Second operand has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 4 states have internal predecessors, (94), 3 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2023-11-06 23:07:56,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:07:56,511 INFO L93 Difference]: Finished difference Result 3443 states and 4267 transitions. [2023-11-06 23:07:56,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-06 23:07:56,512 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 4 states have internal predecessors, (94), 3 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 159 [2023-11-06 23:07:56,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:07:56,521 INFO L225 Difference]: With dead ends: 3443 [2023-11-06 23:07:56,521 INFO L226 Difference]: Without dead ends: 2067 [2023-11-06 23:07:56,525 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-11-06 23:07:56,526 INFO L413 NwaCegarLoop]: 397 mSDtfsCounter, 601 mSDsluCounter, 1603 mSDsCounter, 0 mSdLazyCounter, 1156 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 602 SdHoareTripleChecker+Valid, 2000 SdHoareTripleChecker+Invalid, 1239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 1156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-06 23:07:56,526 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [602 Valid, 2000 Invalid, 1239 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 1156 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-06 23:07:56,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2067 states. [2023-11-06 23:07:56,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2067 to 1875. [2023-11-06 23:07:56,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1875 states, 1560 states have (on average 1.2698717948717948) internal successors, (1981), 1573 states have internal predecessors, (1981), 159 states have call successors, (159), 117 states have call predecessors, (159), 154 states have return successors, (218), 185 states have call predecessors, (218), 158 states have call successors, (218) [2023-11-06 23:07:56,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1875 states to 1875 states and 2358 transitions. [2023-11-06 23:07:56,793 INFO L78 Accepts]: Start accepts. Automaton has 1875 states and 2358 transitions. Word has length 159 [2023-11-06 23:07:56,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:07:56,793 INFO L495 AbstractCegarLoop]: Abstraction has 1875 states and 2358 transitions. [2023-11-06 23:07:56,794 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 4 states have internal predecessors, (94), 3 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2023-11-06 23:07:56,794 INFO L276 IsEmpty]: Start isEmpty. Operand 1875 states and 2358 transitions. [2023-11-06 23:07:56,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-11-06 23:07:56,799 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:07:56,799 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:07:56,800 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-06 23:07:56,800 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 23:07:56,800 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:07:56,801 INFO L85 PathProgramCache]: Analyzing trace with hash -233575893, now seen corresponding path program 1 times [2023-11-06 23:07:56,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:07:56,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294276543] [2023-11-06 23:07:56,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:07:56,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:07:56,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:57,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 23:07:57,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:57,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-06 23:07:57,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:57,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-06 23:07:57,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:57,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 23:07:57,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:57,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-06 23:07:57,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:57,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-06 23:07:57,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:57,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-06 23:07:57,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:57,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-11-06 23:07:57,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:57,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-11-06 23:07:57,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:57,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-11-06 23:07:57,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:57,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-11-06 23:07:57,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:57,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 23:07:57,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:57,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-06 23:07:57,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:57,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2023-11-06 23:07:57,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:57,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-11-06 23:07:57,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:57,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-11-06 23:07:57,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:57,195 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 19 proven. 7 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2023-11-06 23:07:57,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:07:57,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294276543] [2023-11-06 23:07:57,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [294276543] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 23:07:57,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [136859052] [2023-11-06 23:07:57,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:07:57,197 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:07:57,197 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d63c1953-ecf5-4557-bf62-f0ac474d81ea/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:07:57,198 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d63c1953-ecf5-4557-bf62-f0ac474d81ea/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 23:07:57,226 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d63c1953-ecf5-4557-bf62-f0ac474d81ea/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-06 23:07:57,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:57,427 INFO L262 TraceCheckSpWp]: Trace formula consists of 619 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-06 23:07:57,435 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:07:57,672 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 61 proven. 2 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-11-06 23:07:57,672 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 23:07:57,980 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 20 proven. 4 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2023-11-06 23:07:57,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [136859052] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 23:07:57,981 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 23:07:57,981 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5, 5] total 14 [2023-11-06 23:07:57,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3041046] [2023-11-06 23:07:57,982 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 23:07:57,983 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-06 23:07:57,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:07:57,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-06 23:07:57,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2023-11-06 23:07:57,985 INFO L87 Difference]: Start difference. First operand 1875 states and 2358 transitions. Second operand has 14 states, 14 states have (on average 17.571428571428573) internal successors, (246), 12 states have internal predecessors, (246), 6 states have call successors, (38), 8 states have call predecessors, (38), 10 states have return successors, (35), 6 states have call predecessors, (35), 6 states have call successors, (35) [2023-11-06 23:08:00,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:08:00,215 INFO L93 Difference]: Finished difference Result 3847 states and 4811 transitions. [2023-11-06 23:08:00,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-11-06 23:08:00,216 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 17.571428571428573) internal successors, (246), 12 states have internal predecessors, (246), 6 states have call successors, (38), 8 states have call predecessors, (38), 10 states have return successors, (35), 6 states have call predecessors, (35), 6 states have call successors, (35) Word has length 162 [2023-11-06 23:08:00,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:08:00,226 INFO L225 Difference]: With dead ends: 3847 [2023-11-06 23:08:00,226 INFO L226 Difference]: Without dead ends: 2415 [2023-11-06 23:08:00,231 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 386 GetRequests, 357 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=232, Invalid=638, Unknown=0, NotChecked=0, Total=870 [2023-11-06 23:08:00,232 INFO L413 NwaCegarLoop]: 335 mSDtfsCounter, 2011 mSDsluCounter, 2387 mSDsCounter, 0 mSdLazyCounter, 1742 mSolverCounterSat, 329 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2041 SdHoareTripleChecker+Valid, 2722 SdHoareTripleChecker+Invalid, 2071 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 329 IncrementalHoareTripleChecker+Valid, 1742 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-11-06 23:08:00,232 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2041 Valid, 2722 Invalid, 2071 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [329 Valid, 1742 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-11-06 23:08:00,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2415 states. [2023-11-06 23:08:00,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2415 to 2265. [2023-11-06 23:08:00,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2265 states, 1838 states have (on average 1.2426550598476604) internal successors, (2284), 1859 states have internal predecessors, (2284), 213 states have call successors, (213), 167 states have call predecessors, (213), 212 states have return successors, (332), 239 states have call predecessors, (332), 212 states have call successors, (332) [2023-11-06 23:08:00,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2265 states to 2265 states and 2829 transitions. [2023-11-06 23:08:00,550 INFO L78 Accepts]: Start accepts. Automaton has 2265 states and 2829 transitions. Word has length 162 [2023-11-06 23:08:00,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:08:00,551 INFO L495 AbstractCegarLoop]: Abstraction has 2265 states and 2829 transitions. [2023-11-06 23:08:00,551 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 17.571428571428573) internal successors, (246), 12 states have internal predecessors, (246), 6 states have call successors, (38), 8 states have call predecessors, (38), 10 states have return successors, (35), 6 states have call predecessors, (35), 6 states have call successors, (35) [2023-11-06 23:08:00,551 INFO L276 IsEmpty]: Start isEmpty. Operand 2265 states and 2829 transitions. [2023-11-06 23:08:00,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2023-11-06 23:08:00,560 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:08:00,560 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:08:00,568 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d63c1953-ecf5-4557-bf62-f0ac474d81ea/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-06 23:08:00,767 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d63c1953-ecf5-4557-bf62-f0ac474d81ea/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-06 23:08:00,768 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 23:08:00,768 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:08:00,768 INFO L85 PathProgramCache]: Analyzing trace with hash -1024538107, now seen corresponding path program 1 times [2023-11-06 23:08:00,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:08:00,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [991467581] [2023-11-06 23:08:00,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:08:00,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:08:00,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:00,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 23:08:00,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:00,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-06 23:08:00,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:01,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-06 23:08:01,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:01,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2023-11-06 23:08:01,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:01,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-11-06 23:08:01,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:01,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:08:01,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:08:01,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [991467581] [2023-11-06 23:08:01,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [991467581] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:08:01,053 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:08:01,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 23:08:01,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528665552] [2023-11-06 23:08:01,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:08:01,056 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 23:08:01,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:08:01,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 23:08:01,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 23:08:01,058 INFO L87 Difference]: Start difference. First operand 2265 states and 2829 transitions. Second operand has 5 states, 5 states have (on average 29.2) internal successors, (146), 3 states have internal predecessors, (146), 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) [2023-11-06 23:08:04,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:08:04,176 INFO L93 Difference]: Finished difference Result 2713 states and 3544 transitions. [2023-11-06 23:08:04,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 23:08:04,177 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 3 states have internal predecessors, (146), 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 156 [2023-11-06 23:08:04,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:08:04,186 INFO L225 Difference]: With dead ends: 2713 [2023-11-06 23:08:04,187 INFO L226 Difference]: Without dead ends: 2385 [2023-11-06 23:08:04,190 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-11-06 23:08:04,191 INFO L413 NwaCegarLoop]: 383 mSDtfsCounter, 993 mSDsluCounter, 526 mSDsCounter, 0 mSdLazyCounter, 1022 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1015 SdHoareTripleChecker+Valid, 909 SdHoareTripleChecker+Invalid, 1104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 1022 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-11-06 23:08:04,191 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1015 Valid, 909 Invalid, 1104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 1022 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-11-06 23:08:04,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2385 states. [2023-11-06 23:08:04,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2385 to 2265. [2023-11-06 23:08:04,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2265 states, 1838 states have (on average 1.2421109902067464) internal successors, (2283), 1859 states have internal predecessors, (2283), 213 states have call successors, (213), 167 states have call predecessors, (213), 212 states have return successors, (332), 239 states have call predecessors, (332), 212 states have call successors, (332) [2023-11-06 23:08:04,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2265 states to 2265 states and 2828 transitions. [2023-11-06 23:08:04,793 INFO L78 Accepts]: Start accepts. Automaton has 2265 states and 2828 transitions. Word has length 156 [2023-11-06 23:08:04,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:08:04,794 INFO L495 AbstractCegarLoop]: Abstraction has 2265 states and 2828 transitions. [2023-11-06 23:08:04,794 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 3 states have internal predecessors, (146), 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) [2023-11-06 23:08:04,794 INFO L276 IsEmpty]: Start isEmpty. Operand 2265 states and 2828 transitions. [2023-11-06 23:08:04,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2023-11-06 23:08:04,801 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:08:04,801 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:08:04,801 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-11-06 23:08:04,802 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 23:08:04,802 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:08:04,802 INFO L85 PathProgramCache]: Analyzing trace with hash -1362825657, now seen corresponding path program 1 times [2023-11-06 23:08:04,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:08:04,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1544345664] [2023-11-06 23:08:04,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:08:04,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:08:04,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:04,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 23:08:04,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:05,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-06 23:08:05,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:05,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-06 23:08:05,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:05,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2023-11-06 23:08:05,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:05,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-11-06 23:08:05,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:05,106 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:08:05,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:08:05,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1544345664] [2023-11-06 23:08:05,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1544345664] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:08:05,107 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:08:05,107 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-06 23:08:05,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149233270] [2023-11-06 23:08:05,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:08:05,108 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 23:08:05,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:08:05,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 23:08:05,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-06 23:08:05,109 INFO L87 Difference]: Start difference. First operand 2265 states and 2828 transitions. Second operand has 6 states, 6 states have (on average 24.333333333333332) internal successors, (146), 4 states have internal predecessors, (146), 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) [2023-11-06 23:08:09,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:08:09,556 INFO L93 Difference]: Finished difference Result 3159 states and 4257 transitions. [2023-11-06 23:08:09,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-06 23:08:09,557 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 24.333333333333332) internal successors, (146), 4 states have internal predecessors, (146), 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 156 [2023-11-06 23:08:09,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:08:09,567 INFO L225 Difference]: With dead ends: 3159 [2023-11-06 23:08:09,567 INFO L226 Difference]: Without dead ends: 2839 [2023-11-06 23:08:09,571 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2023-11-06 23:08:09,572 INFO L413 NwaCegarLoop]: 347 mSDtfsCounter, 1557 mSDsluCounter, 1018 mSDsCounter, 0 mSdLazyCounter, 2090 mSolverCounterSat, 134 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1584 SdHoareTripleChecker+Valid, 1365 SdHoareTripleChecker+Invalid, 2224 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 134 IncrementalHoareTripleChecker+Valid, 2090 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2023-11-06 23:08:09,572 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1584 Valid, 1365 Invalid, 2224 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [134 Valid, 2090 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2023-11-06 23:08:09,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2839 states. [2023-11-06 23:08:10,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2839 to 2600. [2023-11-06 23:08:10,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2600 states, 2147 states have (on average 1.289240801117839) internal successors, (2768), 2169 states have internal predecessors, (2768), 232 states have call successors, (232), 173 states have call predecessors, (232), 219 states have return successors, (354), 258 states have call predecessors, (354), 231 states have call successors, (354) [2023-11-06 23:08:10,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2600 states to 2600 states and 3354 transitions. [2023-11-06 23:08:10,326 INFO L78 Accepts]: Start accepts. Automaton has 2600 states and 3354 transitions. Word has length 156 [2023-11-06 23:08:10,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:08:10,327 INFO L495 AbstractCegarLoop]: Abstraction has 2600 states and 3354 transitions. [2023-11-06 23:08:10,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 24.333333333333332) internal successors, (146), 4 states have internal predecessors, (146), 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) [2023-11-06 23:08:10,327 INFO L276 IsEmpty]: Start isEmpty. Operand 2600 states and 3354 transitions. [2023-11-06 23:08:10,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2023-11-06 23:08:10,333 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:08:10,334 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:08:10,334 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-11-06 23:08:10,334 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 23:08:10,335 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:08:10,335 INFO L85 PathProgramCache]: Analyzing trace with hash 459774667, now seen corresponding path program 1 times [2023-11-06 23:08:10,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:08:10,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1939247933] [2023-11-06 23:08:10,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:08:10,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:08:10,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:10,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 23:08:10,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:10,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-06 23:08:10,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:10,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-06 23:08:10,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:10,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2023-11-06 23:08:10,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:10,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-11-06 23:08:10,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:10,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:08:10,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:08:10,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1939247933] [2023-11-06 23:08:10,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1939247933] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:08:10,650 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:08:10,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-06 23:08:10,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274615615] [2023-11-06 23:08:10,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:08:10,651 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 23:08:10,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:08:10,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 23:08:10,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-06 23:08:10,653 INFO L87 Difference]: Start difference. First operand 2600 states and 3354 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 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) [2023-11-06 23:08:16,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:08:16,264 INFO L93 Difference]: Finished difference Result 3964 states and 5535 transitions. [2023-11-06 23:08:16,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-06 23:08:16,265 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 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 156 [2023-11-06 23:08:16,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:08:16,276 INFO L225 Difference]: With dead ends: 3964 [2023-11-06 23:08:16,276 INFO L226 Difference]: Without dead ends: 3309 [2023-11-06 23:08:16,280 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-11-06 23:08:16,281 INFO L413 NwaCegarLoop]: 564 mSDtfsCounter, 1582 mSDsluCounter, 1923 mSDsCounter, 0 mSdLazyCounter, 3301 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1609 SdHoareTripleChecker+Valid, 2487 SdHoareTripleChecker+Invalid, 3392 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 3301 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2023-11-06 23:08:16,281 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1609 Valid, 2487 Invalid, 3392 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 3301 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2023-11-06 23:08:16,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3309 states. [2023-11-06 23:08:16,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3309 to 2912. [2023-11-06 23:08:16,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2912 states, 2433 states have (on average 1.318125770653514) internal successors, (3207), 2456 states have internal predecessors, (3207), 251 states have call successors, (251), 179 states have call predecessors, (251), 226 states have return successors, (375), 278 states have call predecessors, (375), 250 states have call successors, (375) [2023-11-06 23:08:16,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2912 states to 2912 states and 3833 transitions. [2023-11-06 23:08:16,858 INFO L78 Accepts]: Start accepts. Automaton has 2912 states and 3833 transitions. Word has length 156 [2023-11-06 23:08:16,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:08:16,859 INFO L495 AbstractCegarLoop]: Abstraction has 2912 states and 3833 transitions. [2023-11-06 23:08:16,859 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 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) [2023-11-06 23:08:16,859 INFO L276 IsEmpty]: Start isEmpty. Operand 2912 states and 3833 transitions. [2023-11-06 23:08:16,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2023-11-06 23:08:16,865 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:08:16,866 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:08:16,866 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-11-06 23:08:16,866 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 23:08:16,867 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:08:16,867 INFO L85 PathProgramCache]: Analyzing trace with hash -1157665783, now seen corresponding path program 1 times [2023-11-06 23:08:16,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:08:16,867 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [371264568] [2023-11-06 23:08:16,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:08:16,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:08:16,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:16,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 23:08:16,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:17,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-06 23:08:17,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:17,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-06 23:08:17,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:17,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2023-11-06 23:08:17,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:17,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-11-06 23:08:17,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:17,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:08:17,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:08:17,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [371264568] [2023-11-06 23:08:17,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [371264568] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:08:17,202 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:08:17,202 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-06 23:08:17,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356445511] [2023-11-06 23:08:17,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:08:17,203 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 23:08:17,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:08:17,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 23:08:17,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-06 23:08:17,205 INFO L87 Difference]: Start difference. First operand 2912 states and 3833 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 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) [2023-11-06 23:08:23,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:08:23,309 INFO L93 Difference]: Finished difference Result 5151 states and 7404 transitions. [2023-11-06 23:08:23,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-06 23:08:23,310 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 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 156 [2023-11-06 23:08:23,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:08:23,325 INFO L225 Difference]: With dead ends: 5151 [2023-11-06 23:08:23,325 INFO L226 Difference]: Without dead ends: 4184 [2023-11-06 23:08:23,331 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-11-06 23:08:23,331 INFO L413 NwaCegarLoop]: 562 mSDtfsCounter, 1580 mSDsluCounter, 1923 mSDsCounter, 0 mSdLazyCounter, 3297 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1607 SdHoareTripleChecker+Valid, 2485 SdHoareTripleChecker+Invalid, 3390 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 3297 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2023-11-06 23:08:23,332 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1607 Valid, 2485 Invalid, 3390 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 3297 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2023-11-06 23:08:23,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4184 states. [2023-11-06 23:08:24,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4184 to 3537. [2023-11-06 23:08:24,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3537 states, 3006 states have (on average 1.3592814371257484) internal successors, (4086), 3031 states have internal predecessors, (4086), 289 states have call successors, (289), 191 states have call predecessors, (289), 240 states have return successors, (421), 318 states have call predecessors, (421), 288 states have call successors, (421) [2023-11-06 23:08:24,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3537 states to 3537 states and 4796 transitions. [2023-11-06 23:08:24,269 INFO L78 Accepts]: Start accepts. Automaton has 3537 states and 4796 transitions. Word has length 156 [2023-11-06 23:08:24,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:08:24,269 INFO L495 AbstractCegarLoop]: Abstraction has 3537 states and 4796 transitions. [2023-11-06 23:08:24,272 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 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) [2023-11-06 23:08:24,273 INFO L276 IsEmpty]: Start isEmpty. Operand 3537 states and 4796 transitions. [2023-11-06 23:08:24,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2023-11-06 23:08:24,280 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:08:24,280 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:08:24,280 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-11-06 23:08:24,281 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 23:08:24,281 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:08:24,281 INFO L85 PathProgramCache]: Analyzing trace with hash -794199285, now seen corresponding path program 1 times [2023-11-06 23:08:24,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:08:24,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [278626223] [2023-11-06 23:08:24,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:08:24,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:08:24,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:24,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 23:08:24,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:24,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-06 23:08:24,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:24,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-06 23:08:24,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:24,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2023-11-06 23:08:24,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:24,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-11-06 23:08:24,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:24,609 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:08:24,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:08:24,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [278626223] [2023-11-06 23:08:24,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [278626223] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:08:24,610 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:08:24,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-06 23:08:24,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27768143] [2023-11-06 23:08:24,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:08:24,611 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 23:08:24,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:08:24,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 23:08:24,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-06 23:08:24,612 INFO L87 Difference]: Start difference. First operand 3537 states and 4796 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 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) [2023-11-06 23:08:30,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:08:30,441 INFO L93 Difference]: Finished difference Result 7436 states and 10979 transitions. [2023-11-06 23:08:30,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-06 23:08:30,442 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 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 156 [2023-11-06 23:08:30,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:08:30,461 INFO L225 Difference]: With dead ends: 7436 [2023-11-06 23:08:30,462 INFO L226 Difference]: Without dead ends: 5844 [2023-11-06 23:08:30,469 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-11-06 23:08:30,470 INFO L413 NwaCegarLoop]: 357 mSDtfsCounter, 1677 mSDsluCounter, 1333 mSDsCounter, 0 mSdLazyCounter, 2830 mSolverCounterSat, 125 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1704 SdHoareTripleChecker+Valid, 1690 SdHoareTripleChecker+Invalid, 2955 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 125 IncrementalHoareTripleChecker+Valid, 2830 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2023-11-06 23:08:30,470 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1704 Valid, 1690 Invalid, 2955 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [125 Valid, 2830 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2023-11-06 23:08:30,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5844 states. [2023-11-06 23:08:31,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5844 to 4788. [2023-11-06 23:08:31,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4788 states, 4153 states have (on average 1.407175535757284) internal successors, (5844), 4182 states have internal predecessors, (5844), 365 states have call successors, (365), 215 states have call predecessors, (365), 268 states have return successors, (519), 398 states have call predecessors, (519), 364 states have call successors, (519) [2023-11-06 23:08:31,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4788 states to 4788 states and 6728 transitions. [2023-11-06 23:08:31,543 INFO L78 Accepts]: Start accepts. Automaton has 4788 states and 6728 transitions. Word has length 156 [2023-11-06 23:08:31,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:08:31,543 INFO L495 AbstractCegarLoop]: Abstraction has 4788 states and 6728 transitions. [2023-11-06 23:08:31,543 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 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) [2023-11-06 23:08:31,544 INFO L276 IsEmpty]: Start isEmpty. Operand 4788 states and 6728 transitions. [2023-11-06 23:08:31,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2023-11-06 23:08:31,551 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:08:31,552 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:08:31,552 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-11-06 23:08:31,552 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 23:08:31,553 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:08:31,553 INFO L85 PathProgramCache]: Analyzing trace with hash -505379895, now seen corresponding path program 1 times [2023-11-06 23:08:31,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:08:31,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [859830645] [2023-11-06 23:08:31,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:08:31,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:08:31,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:31,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 23:08:31,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:31,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-06 23:08:31,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:31,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-06 23:08:31,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:31,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2023-11-06 23:08:31,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:31,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-11-06 23:08:31,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:31,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:08:31,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:08:31,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [859830645] [2023-11-06 23:08:31,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [859830645] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:08:31,865 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:08:31,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-06 23:08:31,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800068767] [2023-11-06 23:08:31,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:08:31,867 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 23:08:31,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:08:31,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 23:08:31,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-06 23:08:31,868 INFO L87 Difference]: Start difference. First operand 4788 states and 6728 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 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) [2023-11-06 23:08:38,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:08:38,339 INFO L93 Difference]: Finished difference Result 12005 states and 18145 transitions. [2023-11-06 23:08:38,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-06 23:08:38,348 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 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 156 [2023-11-06 23:08:38,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:08:38,369 INFO L225 Difference]: With dead ends: 12005 [2023-11-06 23:08:38,369 INFO L226 Difference]: Without dead ends: 9162 [2023-11-06 23:08:38,380 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-11-06 23:08:38,380 INFO L413 NwaCegarLoop]: 562 mSDtfsCounter, 1572 mSDsluCounter, 1923 mSDsCounter, 0 mSdLazyCounter, 3279 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1599 SdHoareTripleChecker+Valid, 2485 SdHoareTripleChecker+Invalid, 3372 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 3279 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2023-11-06 23:08:38,381 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1599 Valid, 2485 Invalid, 3372 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 3279 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2023-11-06 23:08:38,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9162 states. [2023-11-06 23:08:39,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9162 to 7295. [2023-11-06 23:08:39,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7295 states, 6452 states have (on average 1.4516429014259145) internal successors, (9366), 6489 states have internal predecessors, (9366), 517 states have call successors, (517), 263 states have call predecessors, (517), 324 states have return successors, (733), 558 states have call predecessors, (733), 516 states have call successors, (733) [2023-11-06 23:08:39,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7295 states to 7295 states and 10616 transitions. [2023-11-06 23:08:39,924 INFO L78 Accepts]: Start accepts. Automaton has 7295 states and 10616 transitions. Word has length 156 [2023-11-06 23:08:39,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:08:39,924 INFO L495 AbstractCegarLoop]: Abstraction has 7295 states and 10616 transitions. [2023-11-06 23:08:39,925 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 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) [2023-11-06 23:08:39,925 INFO L276 IsEmpty]: Start isEmpty. Operand 7295 states and 10616 transitions. [2023-11-06 23:08:39,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2023-11-06 23:08:39,932 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:08:39,932 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:08:39,933 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-11-06 23:08:39,933 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 23:08:39,933 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:08:39,933 INFO L85 PathProgramCache]: Analyzing trace with hash -1050252469, now seen corresponding path program 1 times [2023-11-06 23:08:39,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:08:39,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671577051] [2023-11-06 23:08:39,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:08:39,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:08:39,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:40,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 23:08:40,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:40,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-06 23:08:40,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:40,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-06 23:08:40,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:40,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2023-11-06 23:08:40,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:40,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-11-06 23:08:40,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:40,209 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:08:40,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:08:40,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [671577051] [2023-11-06 23:08:40,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [671577051] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:08:40,210 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:08:40,210 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-06 23:08:40,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817375138] [2023-11-06 23:08:40,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:08:40,211 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 23:08:40,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:08:40,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 23:08:40,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-06 23:08:40,212 INFO L87 Difference]: Start difference. First operand 7295 states and 10616 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 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) [2023-11-06 23:08:44,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:08:44,606 INFO L93 Difference]: Finished difference Result 14602 states and 22280 transitions. [2023-11-06 23:08:44,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 23:08:44,606 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 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 156 [2023-11-06 23:08:44,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:08:44,631 INFO L225 Difference]: With dead ends: 14602 [2023-11-06 23:08:44,631 INFO L226 Difference]: Without dead ends: 9252 [2023-11-06 23:08:44,646 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-11-06 23:08:44,647 INFO L413 NwaCegarLoop]: 332 mSDtfsCounter, 1204 mSDsluCounter, 1055 mSDsCounter, 0 mSdLazyCounter, 1723 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1232 SdHoareTripleChecker+Valid, 1387 SdHoareTripleChecker+Invalid, 1818 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 1723 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-11-06 23:08:44,648 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1232 Valid, 1387 Invalid, 1818 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 1723 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-11-06 23:08:44,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9252 states. [2023-11-06 23:08:46,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9252 to 7295. [2023-11-06 23:08:46,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7295 states, 6452 states have (on average 1.449008059516429) internal successors, (9349), 6489 states have internal predecessors, (9349), 517 states have call successors, (517), 263 states have call predecessors, (517), 324 states have return successors, (733), 558 states have call predecessors, (733), 516 states have call successors, (733) [2023-11-06 23:08:46,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7295 states to 7295 states and 10599 transitions. [2023-11-06 23:08:46,385 INFO L78 Accepts]: Start accepts. Automaton has 7295 states and 10599 transitions. Word has length 156 [2023-11-06 23:08:46,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:08:46,385 INFO L495 AbstractCegarLoop]: Abstraction has 7295 states and 10599 transitions. [2023-11-06 23:08:46,385 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 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) [2023-11-06 23:08:46,385 INFO L276 IsEmpty]: Start isEmpty. Operand 7295 states and 10599 transitions. [2023-11-06 23:08:46,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2023-11-06 23:08:46,393 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:08:46,393 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:08:46,393 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-11-06 23:08:46,394 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 23:08:46,394 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:08:46,394 INFO L85 PathProgramCache]: Analyzing trace with hash -375092343, now seen corresponding path program 1 times [2023-11-06 23:08:46,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:08:46,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [467223518] [2023-11-06 23:08:46,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:08:46,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:08:46,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:46,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 23:08:46,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:46,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-06 23:08:46,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:46,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-06 23:08:46,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:46,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2023-11-06 23:08:46,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:46,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-11-06 23:08:46,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:46,663 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:08:46,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:08:46,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [467223518] [2023-11-06 23:08:46,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [467223518] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:08:46,664 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:08:46,664 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-06 23:08:46,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509710488] [2023-11-06 23:08:46,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:08:46,665 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 23:08:46,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:08:46,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 23:08:46,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-06 23:08:46,666 INFO L87 Difference]: Start difference. First operand 7295 states and 10599 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 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) [2023-11-06 23:08:50,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:08:50,835 INFO L93 Difference]: Finished difference Result 14567 states and 22160 transitions. [2023-11-06 23:08:50,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 23:08:50,836 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 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 156 [2023-11-06 23:08:50,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:08:50,854 INFO L225 Difference]: With dead ends: 14567 [2023-11-06 23:08:50,854 INFO L226 Difference]: Without dead ends: 9217 [2023-11-06 23:08:50,865 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-11-06 23:08:50,866 INFO L413 NwaCegarLoop]: 332 mSDtfsCounter, 1201 mSDsluCounter, 1055 mSDsCounter, 0 mSdLazyCounter, 1699 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1229 SdHoareTripleChecker+Valid, 1387 SdHoareTripleChecker+Invalid, 1794 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 1699 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-11-06 23:08:50,866 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1229 Valid, 1387 Invalid, 1794 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 1699 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-11-06 23:08:50,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9217 states. [2023-11-06 23:08:52,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9217 to 7295. [2023-11-06 23:08:52,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7295 states, 6452 states have (on average 1.4463732176069435) internal successors, (9332), 6489 states have internal predecessors, (9332), 517 states have call successors, (517), 263 states have call predecessors, (517), 324 states have return successors, (733), 558 states have call predecessors, (733), 516 states have call successors, (733) [2023-11-06 23:08:52,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7295 states to 7295 states and 10582 transitions. [2023-11-06 23:08:52,279 INFO L78 Accepts]: Start accepts. Automaton has 7295 states and 10582 transitions. Word has length 156 [2023-11-06 23:08:52,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:08:52,279 INFO L495 AbstractCegarLoop]: Abstraction has 7295 states and 10582 transitions. [2023-11-06 23:08:52,279 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 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) [2023-11-06 23:08:52,279 INFO L276 IsEmpty]: Start isEmpty. Operand 7295 states and 10582 transitions. [2023-11-06 23:08:52,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2023-11-06 23:08:52,285 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:08:52,286 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:08:52,286 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-11-06 23:08:52,286 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 23:08:52,286 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:08:52,287 INFO L85 PathProgramCache]: Analyzing trace with hash -959863993, now seen corresponding path program 1 times [2023-11-06 23:08:52,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:08:52,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [667177089] [2023-11-06 23:08:52,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:08:52,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:08:52,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:52,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 23:08:52,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:52,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-06 23:08:52,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:52,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-06 23:08:52,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:52,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2023-11-06 23:08:52,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:52,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-11-06 23:08:52,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:52,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:08:52,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:08:52,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [667177089] [2023-11-06 23:08:52,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [667177089] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:08:52,592 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:08:52,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-06 23:08:52,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277933284] [2023-11-06 23:08:52,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:08:52,593 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 23:08:52,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:08:52,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 23:08:52,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-06 23:08:52,594 INFO L87 Difference]: Start difference. First operand 7295 states and 10582 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 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) [2023-11-06 23:09:00,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:09:00,464 INFO L93 Difference]: Finished difference Result 21089 states and 32265 transitions. [2023-11-06 23:09:00,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-06 23:09:00,464 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 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 156 [2023-11-06 23:09:00,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:09:00,501 INFO L225 Difference]: With dead ends: 21089 [2023-11-06 23:09:00,501 INFO L226 Difference]: Without dead ends: 15739 [2023-11-06 23:09:00,517 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-11-06 23:09:00,518 INFO L413 NwaCegarLoop]: 562 mSDtfsCounter, 1559 mSDsluCounter, 1923 mSDsCounter, 0 mSdLazyCounter, 3197 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1586 SdHoareTripleChecker+Valid, 2485 SdHoareTripleChecker+Invalid, 3290 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 3197 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2023-11-06 23:09:00,518 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1586 Valid, 2485 Invalid, 3290 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 3197 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2023-11-06 23:09:00,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15739 states. [2023-11-06 23:09:02,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15739 to 12372. [2023-11-06 23:09:02,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12372 states, 11113 states have (on average 1.478538648429767) internal successors, (16431), 11166 states have internal predecessors, (16431), 821 states have call successors, (821), 359 states have call predecessors, (821), 436 states have return successors, (1215), 878 states have call predecessors, (1215), 820 states have call successors, (1215) [2023-11-06 23:09:02,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12372 states to 12372 states and 18467 transitions. [2023-11-06 23:09:02,832 INFO L78 Accepts]: Start accepts. Automaton has 12372 states and 18467 transitions. Word has length 156 [2023-11-06 23:09:02,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:09:02,832 INFO L495 AbstractCegarLoop]: Abstraction has 12372 states and 18467 transitions. [2023-11-06 23:09:02,833 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 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) [2023-11-06 23:09:02,833 INFO L276 IsEmpty]: Start isEmpty. Operand 12372 states and 18467 transitions. [2023-11-06 23:09:02,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2023-11-06 23:09:02,840 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:09:02,840 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:09:02,840 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-11-06 23:09:02,840 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 23:09:02,841 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:09:02,841 INFO L85 PathProgramCache]: Analyzing trace with hash -1394369591, now seen corresponding path program 1 times [2023-11-06 23:09:02,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:09:02,841 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2117899731] [2023-11-06 23:09:02,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:09:02,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:09:02,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:09:02,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 23:09:02,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:09:02,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-06 23:09:02,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:09:03,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-06 23:09:03,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:09:03,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2023-11-06 23:09:03,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:09:03,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-11-06 23:09:03,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:09:03,081 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:09:03,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:09:03,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2117899731] [2023-11-06 23:09:03,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2117899731] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:09:03,082 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:09:03,082 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-06 23:09:03,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438713752] [2023-11-06 23:09:03,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:09:03,083 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 23:09:03,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:09:03,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 23:09:03,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-06 23:09:03,084 INFO L87 Difference]: Start difference. First operand 12372 states and 18467 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 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) [2023-11-06 23:09:08,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:09:08,908 INFO L93 Difference]: Finished difference Result 26333 states and 40689 transitions. [2023-11-06 23:09:08,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 23:09:08,909 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 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 156 [2023-11-06 23:09:08,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:09:08,942 INFO L225 Difference]: With dead ends: 26333 [2023-11-06 23:09:08,942 INFO L226 Difference]: Without dead ends: 15906 [2023-11-06 23:09:08,956 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-11-06 23:09:08,956 INFO L413 NwaCegarLoop]: 332 mSDtfsCounter, 1393 mSDsluCounter, 824 mSDsCounter, 0 mSdLazyCounter, 1527 mSolverCounterSat, 134 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1421 SdHoareTripleChecker+Valid, 1156 SdHoareTripleChecker+Invalid, 1661 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 134 IncrementalHoareTripleChecker+Valid, 1527 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-11-06 23:09:08,957 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1421 Valid, 1156 Invalid, 1661 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [134 Valid, 1527 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-11-06 23:09:08,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15906 states. [2023-11-06 23:09:11,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15906 to 12372. [2023-11-06 23:09:11,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12372 states, 11113 states have (on average 1.4755691532439486) internal successors, (16398), 11166 states have internal predecessors, (16398), 821 states have call successors, (821), 359 states have call predecessors, (821), 436 states have return successors, (1215), 878 states have call predecessors, (1215), 820 states have call successors, (1215) [2023-11-06 23:09:11,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12372 states to 12372 states and 18434 transitions. [2023-11-06 23:09:11,534 INFO L78 Accepts]: Start accepts. Automaton has 12372 states and 18434 transitions. Word has length 156 [2023-11-06 23:09:11,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:09:11,534 INFO L495 AbstractCegarLoop]: Abstraction has 12372 states and 18434 transitions. [2023-11-06 23:09:11,534 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 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) [2023-11-06 23:09:11,534 INFO L276 IsEmpty]: Start isEmpty. Operand 12372 states and 18434 transitions. [2023-11-06 23:09:11,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2023-11-06 23:09:11,541 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:09:11,541 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:09:11,542 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-11-06 23:09:11,542 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 23:09:11,542 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:09:11,542 INFO L85 PathProgramCache]: Analyzing trace with hash -1824027897, now seen corresponding path program 1 times [2023-11-06 23:09:11,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:09:11,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1428440277] [2023-11-06 23:09:11,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:09:11,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:09:11,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:09:11,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 23:09:11,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:09:11,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-06 23:09:11,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:09:11,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-06 23:09:11,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:09:11,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2023-11-06 23:09:11,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:09:11,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-11-06 23:09:11,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:09:11,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:09:11,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:09:11,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1428440277] [2023-11-06 23:09:11,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1428440277] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:09:11,828 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:09:11,828 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-06 23:09:11,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946093760] [2023-11-06 23:09:11,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:09:11,829 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 23:09:11,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:09:11,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 23:09:11,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-06 23:09:11,830 INFO L87 Difference]: Start difference. First operand 12372 states and 18434 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 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) [2023-11-06 23:09:23,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:09:23,835 INFO L93 Difference]: Finished difference Result 39332 states and 60822 transitions. [2023-11-06 23:09:23,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-06 23:09:23,836 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 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 156 [2023-11-06 23:09:23,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:09:23,914 INFO L225 Difference]: With dead ends: 39332 [2023-11-06 23:09:23,914 INFO L226 Difference]: Without dead ends: 28905 [2023-11-06 23:09:23,943 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-11-06 23:09:23,944 INFO L413 NwaCegarLoop]: 562 mSDtfsCounter, 1551 mSDsluCounter, 1923 mSDsCounter, 0 mSdLazyCounter, 3159 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1578 SdHoareTripleChecker+Valid, 2485 SdHoareTripleChecker+Invalid, 3252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 3159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2023-11-06 23:09:23,945 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1578 Valid, 2485 Invalid, 3252 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 3159 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2023-11-06 23:09:23,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28905 states. [2023-11-06 23:09:29,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28905 to 22584. [2023-11-06 23:09:29,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22584 states, 20493 states have (on average 1.4947543063485091) internal successors, (30632), 20578 states have internal predecessors, (30632), 1429 states have call successors, (1429), 551 states have call predecessors, (1429), 660 states have return successors, (2341), 1518 states have call predecessors, (2341), 1428 states have call successors, (2341) [2023-11-06 23:09:29,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22584 states to 22584 states and 34402 transitions. [2023-11-06 23:09:29,694 INFO L78 Accepts]: Start accepts. Automaton has 22584 states and 34402 transitions. Word has length 156 [2023-11-06 23:09:29,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:09:29,694 INFO L495 AbstractCegarLoop]: Abstraction has 22584 states and 34402 transitions. [2023-11-06 23:09:29,694 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 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) [2023-11-06 23:09:29,695 INFO L276 IsEmpty]: Start isEmpty. Operand 22584 states and 34402 transitions. [2023-11-06 23:09:29,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2023-11-06 23:09:29,707 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:09:29,707 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:09:29,707 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2023-11-06 23:09:29,707 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 23:09:29,708 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:09:29,708 INFO L85 PathProgramCache]: Analyzing trace with hash 1764342793, now seen corresponding path program 1 times [2023-11-06 23:09:29,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:09:29,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [323386183] [2023-11-06 23:09:29,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:09:29,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:09:29,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:09:29,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 23:09:29,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:09:29,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-06 23:09:29,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:09:29,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-06 23:09:29,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:09:29,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2023-11-06 23:09:29,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:09:29,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-11-06 23:09:29,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:09:29,983 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:09:29,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:09:29,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [323386183] [2023-11-06 23:09:29,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [323386183] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:09:29,984 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:09:29,984 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-06 23:09:29,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081707229] [2023-11-06 23:09:29,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:09:29,985 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 23:09:29,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:09:29,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 23:09:29,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-06 23:09:29,986 INFO L87 Difference]: Start difference. First operand 22584 states and 34402 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 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) [2023-11-06 23:09:55,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:09:55,912 INFO L93 Difference]: Finished difference Result 85418 states and 133394 transitions. [2023-11-06 23:09:55,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-06 23:09:55,913 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 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 156 [2023-11-06 23:09:55,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:09:56,219 INFO L225 Difference]: With dead ends: 85418 [2023-11-06 23:09:56,219 INFO L226 Difference]: Without dead ends: 64779 [2023-11-06 23:09:56,264 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-11-06 23:09:56,265 INFO L413 NwaCegarLoop]: 359 mSDtfsCounter, 1741 mSDsluCounter, 1329 mSDsCounter, 0 mSdLazyCounter, 3392 mSolverCounterSat, 125 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1767 SdHoareTripleChecker+Valid, 1688 SdHoareTripleChecker+Invalid, 3517 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 125 IncrementalHoareTripleChecker+Valid, 3392 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2023-11-06 23:09:56,265 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1767 Valid, 1688 Invalid, 3517 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [125 Valid, 3392 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2023-11-06 23:09:56,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64779 states.