./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/Problem05_label40+token_ring.06.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2e9c228-4b8c-49e2-92c1-46595724fb13/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2e9c228-4b8c-49e2-92c1-46595724fb13/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2e9c228-4b8c-49e2-92c1-46595724fb13/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2e9c228-4b8c-49e2-92c1-46595724fb13/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/Problem05_label40+token_ring.06.cil-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2e9c228-4b8c-49e2-92c1-46595724fb13/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2e9c228-4b8c-49e2-92c1-46595724fb13/bin/uautomizer-verify-BQ2R08f2Ya --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 6168447ca09b86da2cc4f25a50a94286b8e0ec7cdf3a295188037c59149a5efb --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 02:55:03,754 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 02:55:03,829 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2e9c228-4b8c-49e2-92c1-46595724fb13/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-29 02:55:03,835 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 02:55:03,835 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 02:55:03,868 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 02:55:03,868 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 02:55:03,869 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 02:55:03,870 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 02:55:03,870 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 02:55:03,871 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 02:55:03,871 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 02:55:03,872 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 02:55:03,872 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 02:55:03,873 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 02:55:03,873 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 02:55:03,874 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 02:55:03,874 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 02:55:03,875 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 02:55:03,875 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 02:55:03,876 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 02:55:03,876 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 02:55:03,877 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 02:55:03,877 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 02:55:03,878 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 02:55:03,878 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 02:55:03,879 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 02:55:03,879 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 02:55:03,879 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 02:55:03,880 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 02:55:03,880 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 02:55:03,880 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 02:55:03,881 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 02:55:03,881 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 02:55:03,881 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 02:55:03,882 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 02:55:03,882 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 02:55:03,882 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 02:55:03,882 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 02:55:03,882 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 02:55:03,883 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 02:55:03,883 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 02:55:03,883 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_c2e9c228-4b8c-49e2-92c1-46595724fb13/bin/uautomizer-verify-BQ2R08f2Ya/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2e9c228-4b8c-49e2-92c1-46595724fb13/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6168447ca09b86da2cc4f25a50a94286b8e0ec7cdf3a295188037c59149a5efb [2023-11-29 02:55:04,101 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 02:55:04,128 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 02:55:04,131 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 02:55:04,132 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 02:55:04,132 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 02:55:04,133 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2e9c228-4b8c-49e2-92c1-46595724fb13/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/combinations/Problem05_label40+token_ring.06.cil-2.c [2023-11-29 02:55:06,904 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 02:55:07,443 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 02:55:07,443 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2e9c228-4b8c-49e2-92c1-46595724fb13/sv-benchmarks/c/combinations/Problem05_label40+token_ring.06.cil-2.c [2023-11-29 02:55:07,483 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2e9c228-4b8c-49e2-92c1-46595724fb13/bin/uautomizer-verify-BQ2R08f2Ya/data/c8dbc704f/d1eaf9175b454b27b76c41f8402b919a/FLAGfb1e0b255 [2023-11-29 02:55:07,495 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2e9c228-4b8c-49e2-92c1-46595724fb13/bin/uautomizer-verify-BQ2R08f2Ya/data/c8dbc704f/d1eaf9175b454b27b76c41f8402b919a [2023-11-29 02:55:07,497 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 02:55:07,499 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 02:55:07,500 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 02:55:07,500 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 02:55:07,504 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 02:55:07,505 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 02:55:07" (1/1) ... [2023-11-29 02:55:07,506 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d46cea9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:55:07, skipping insertion in model container [2023-11-29 02:55:07,506 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 02:55:07" (1/1) ... [2023-11-29 02:55:07,691 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 02:55:09,369 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_c2e9c228-4b8c-49e2-92c1-46595724fb13/sv-benchmarks/c/combinations/Problem05_label40+token_ring.06.cil-2.c[377069,377082] [2023-11-29 02:55:09,398 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_c2e9c228-4b8c-49e2-92c1-46595724fb13/sv-benchmarks/c/combinations/Problem05_label40+token_ring.06.cil-2.c[383339,383352] [2023-11-29 02:55:09,617 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 02:55:09,627 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 02:55:10,637 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_c2e9c228-4b8c-49e2-92c1-46595724fb13/sv-benchmarks/c/combinations/Problem05_label40+token_ring.06.cil-2.c[377069,377082] [2023-11-29 02:55:10,647 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_c2e9c228-4b8c-49e2-92c1-46595724fb13/sv-benchmarks/c/combinations/Problem05_label40+token_ring.06.cil-2.c[383339,383352] [2023-11-29 02:55:10,663 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 02:55:10,737 INFO L206 MainTranslator]: Completed translation [2023-11-29 02:55:10,737 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:55:10 WrapperNode [2023-11-29 02:55:10,738 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 02:55:10,739 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 02:55:10,739 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 02:55:10,739 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 02:55:10,746 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:55:10" (1/1) ... [2023-11-29 02:55:10,812 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:55:10" (1/1) ... [2023-11-29 02:55:11,221 INFO L138 Inliner]: procedures = 56, calls = 59, calls flagged for inlining = 34, calls inlined = 34, statements flattened = 12868 [2023-11-29 02:55:11,223 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 02:55:11,223 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 02:55:11,224 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 02:55:11,225 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 02:55:11,237 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:55:10" (1/1) ... [2023-11-29 02:55:11,237 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:55:10" (1/1) ... [2023-11-29 02:55:11,346 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:55:10" (1/1) ... [2023-11-29 02:55:11,518 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-11-29 02:55:11,519 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:55:10" (1/1) ... [2023-11-29 02:55:11,519 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:55:10" (1/1) ... [2023-11-29 02:55:11,708 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:55:10" (1/1) ... [2023-11-29 02:55:11,797 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:55:10" (1/1) ... [2023-11-29 02:55:11,828 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:55:10" (1/1) ... [2023-11-29 02:55:11,874 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:55:10" (1/1) ... [2023-11-29 02:55:11,926 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 02:55:11,927 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 02:55:11,928 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 02:55:11,928 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 02:55:11,929 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:55:10" (1/1) ... [2023-11-29 02:55:11,935 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 02:55:11,944 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2e9c228-4b8c-49e2-92c1-46595724fb13/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:55:11,960 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2e9c228-4b8c-49e2-92c1-46595724fb13/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 02:55:11,962 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2e9c228-4b8c-49e2-92c1-46595724fb13/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 02:55:11,987 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 02:55:11,987 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2023-11-29 02:55:11,987 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2023-11-29 02:55:11,987 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2023-11-29 02:55:11,987 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2023-11-29 02:55:11,987 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2023-11-29 02:55:11,988 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2023-11-29 02:55:11,988 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2023-11-29 02:55:11,988 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2023-11-29 02:55:11,988 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2023-11-29 02:55:11,988 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2023-11-29 02:55:11,988 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2023-11-29 02:55:11,988 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2023-11-29 02:55:11,988 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 02:55:11,988 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 02:55:11,989 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 02:55:12,101 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 02:55:12,104 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 02:55:19,524 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 02:55:19,625 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 02:55:19,625 INFO L309 CfgBuilder]: Removed 10 assume(true) statements. [2023-11-29 02:55:19,626 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 02:55:19 BoogieIcfgContainer [2023-11-29 02:55:19,626 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 02:55:19,628 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 02:55:19,629 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 02:55:19,631 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 02:55:19,631 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 02:55:07" (1/3) ... [2023-11-29 02:55:19,632 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39307030 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 02:55:19, skipping insertion in model container [2023-11-29 02:55:19,632 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:55:10" (2/3) ... [2023-11-29 02:55:19,633 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39307030 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 02:55:19, skipping insertion in model container [2023-11-29 02:55:19,633 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 02:55:19" (3/3) ... [2023-11-29 02:55:19,634 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem05_label40+token_ring.06.cil-2.c [2023-11-29 02:55:19,649 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 02:55:19,649 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-29 02:55:19,726 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 02:55:19,731 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@63e44942, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 02:55:19,732 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-11-29 02:55:19,744 INFO L276 IsEmpty]: Start isEmpty. Operand has 2333 states, 2304 states have (on average 1.8815104166666667) internal successors, (4335), 2307 states have internal predecessors, (4335), 20 states have call successors, (20), 6 states have call predecessors, (20), 6 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-11-29 02:55:19,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-11-29 02:55:19,760 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:55:19,760 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] [2023-11-29 02:55:19,761 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:55:19,765 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:55:19,765 INFO L85 PathProgramCache]: Analyzing trace with hash -1188096418, now seen corresponding path program 1 times [2023-11-29 02:55:19,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:55:19,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1560223569] [2023-11-29 02:55:19,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:55:19,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:55:19,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:55:20,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 02:55:20,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:55:20,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-29 02:55:20,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:55:20,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-29 02:55:20,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:55:20,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-11-29 02:55:20,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:55:20,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-11-29 02:55:20,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:55:20,154 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:55:20,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:55:20,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1560223569] [2023-11-29 02:55:20,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1560223569] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:55:20,157 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:55:20,157 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 02:55:20,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199419413] [2023-11-29 02:55:20,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:55:20,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 02:55:20,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:55:20,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 02:55:20,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 02:55:20,196 INFO L87 Difference]: Start difference. First operand has 2333 states, 2304 states have (on average 1.8815104166666667) internal successors, (4335), 2307 states have internal predecessors, (4335), 20 states have call successors, (20), 6 states have call predecessors, (20), 6 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) Second operand has 5 states, 5 states have (on average 18.2) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 02:55:21,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:55:21,574 INFO L93 Difference]: Finished difference Result 4728 states and 8858 transitions. [2023-11-29 02:55:21,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 02:55:21,576 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 3 states have internal predecessors, (91), 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 101 [2023-11-29 02:55:21,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:55:21,607 INFO L225 Difference]: With dead ends: 4728 [2023-11-29 02:55:21,607 INFO L226 Difference]: Without dead ends: 2399 [2023-11-29 02:55:21,617 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-29 02:55:21,620 INFO L413 NwaCegarLoop]: 4143 mSDtfsCounter, 553 mSDsluCounter, 12072 mSDsCounter, 0 mSdLazyCounter, 599 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 571 SdHoareTripleChecker+Valid, 16215 SdHoareTripleChecker+Invalid, 643 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 599 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-29 02:55:21,622 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [571 Valid, 16215 Invalid, 643 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [44 Valid, 599 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-29 02:55:21,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2399 states. [2023-11-29 02:55:21,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2399 to 2329. [2023-11-29 02:55:21,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2329 states, 2301 states have (on average 1.8457192524989134) internal successors, (4247), 2303 states have internal predecessors, (4247), 20 states have call successors, (20), 6 states have call predecessors, (20), 6 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-11-29 02:55:21,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2329 states to 2329 states and 4287 transitions. [2023-11-29 02:55:21,782 INFO L78 Accepts]: Start accepts. Automaton has 2329 states and 4287 transitions. Word has length 101 [2023-11-29 02:55:21,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:55:21,782 INFO L495 AbstractCegarLoop]: Abstraction has 2329 states and 4287 transitions. [2023-11-29 02:55:21,783 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 02:55:21,783 INFO L276 IsEmpty]: Start isEmpty. Operand 2329 states and 4287 transitions. [2023-11-29 02:55:21,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-11-29 02:55:21,790 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:55:21,790 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] [2023-11-29 02:55:21,790 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-29 02:55:21,791 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:55:21,791 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:55:21,791 INFO L85 PathProgramCache]: Analyzing trace with hash 1229807648, now seen corresponding path program 1 times [2023-11-29 02:55:21,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:55:21,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1650627227] [2023-11-29 02:55:21,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:55:21,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:55:21,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:55:21,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 02:55:21,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:55:22,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-29 02:55:22,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:55:22,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-29 02:55:22,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:55:22,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-11-29 02:55:22,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:55:22,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-11-29 02:55:22,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:55:22,156 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:55:22,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:55:22,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1650627227] [2023-11-29 02:55:22,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1650627227] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:55:22,157 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:55:22,158 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 02:55:22,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906129224] [2023-11-29 02:55:22,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:55:22,160 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 02:55:22,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:55:22,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 02:55:22,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 02:55:22,162 INFO L87 Difference]: Start difference. First operand 2329 states and 4287 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 02:55:24,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:55:24,782 INFO L93 Difference]: Finished difference Result 2881 states and 5198 transitions. [2023-11-29 02:55:24,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-29 02:55:24,782 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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 101 [2023-11-29 02:55:24,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:55:24,801 INFO L225 Difference]: With dead ends: 2881 [2023-11-29 02:55:24,802 INFO L226 Difference]: Without dead ends: 2685 [2023-11-29 02:55:24,804 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-11-29 02:55:24,805 INFO L413 NwaCegarLoop]: 4243 mSDtfsCounter, 4743 mSDsluCounter, 16733 mSDsCounter, 0 mSdLazyCounter, 2182 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4756 SdHoareTripleChecker+Valid, 20976 SdHoareTripleChecker+Invalid, 2236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 2182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-11-29 02:55:24,806 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4756 Valid, 20976 Invalid, 2236 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [54 Valid, 2182 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-11-29 02:55:24,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2685 states. [2023-11-29 02:55:24,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2685 to 2536. [2023-11-29 02:55:24,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2536 states, 2483 states have (on average 1.829238824003222) internal successors, (4542), 2487 states have internal predecessors, (4542), 37 states have call successors, (37), 12 states have call predecessors, (37), 14 states have return successors, (44), 38 states have call predecessors, (44), 37 states have call successors, (44) [2023-11-29 02:55:24,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2536 states to 2536 states and 4623 transitions. [2023-11-29 02:55:24,906 INFO L78 Accepts]: Start accepts. Automaton has 2536 states and 4623 transitions. Word has length 101 [2023-11-29 02:55:24,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:55:24,907 INFO L495 AbstractCegarLoop]: Abstraction has 2536 states and 4623 transitions. [2023-11-29 02:55:24,907 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 02:55:24,907 INFO L276 IsEmpty]: Start isEmpty. Operand 2536 states and 4623 transitions. [2023-11-29 02:55:24,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-11-29 02:55:24,910 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:55:24,911 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] [2023-11-29 02:55:24,911 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-29 02:55:24,911 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:55:24,912 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:55:24,912 INFO L85 PathProgramCache]: Analyzing trace with hash -1188676830, now seen corresponding path program 1 times [2023-11-29 02:55:24,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:55:24,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1197316622] [2023-11-29 02:55:24,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:55:24,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:55:24,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:55:25,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 02:55:25,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:55:25,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-29 02:55:25,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:55:25,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-29 02:55:25,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:55:25,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-11-29 02:55:25,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:55:25,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-11-29 02:55:25,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:55:25,156 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:55:25,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:55:25,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1197316622] [2023-11-29 02:55:25,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1197316622] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:55:25,157 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:55:25,157 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 02:55:25,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669133061] [2023-11-29 02:55:25,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:55:25,158 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 02:55:25,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:55:25,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 02:55:25,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 02:55:25,159 INFO L87 Difference]: Start difference. First operand 2536 states and 4623 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 02:55:27,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:55:27,189 INFO L93 Difference]: Finished difference Result 3580 states and 6330 transitions. [2023-11-29 02:55:27,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-29 02:55:27,190 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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 101 [2023-11-29 02:55:27,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:55:27,206 INFO L225 Difference]: With dead ends: 3580 [2023-11-29 02:55:27,206 INFO L226 Difference]: Without dead ends: 3179 [2023-11-29 02:55:27,209 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-11-29 02:55:27,210 INFO L413 NwaCegarLoop]: 4203 mSDtfsCounter, 4768 mSDsluCounter, 16681 mSDsCounter, 0 mSdLazyCounter, 1969 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4781 SdHoareTripleChecker+Valid, 20884 SdHoareTripleChecker+Invalid, 2031 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 1969 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-11-29 02:55:27,211 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4781 Valid, 20884 Invalid, 2031 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [62 Valid, 1969 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-11-29 02:55:27,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3179 states. [2023-11-29 02:55:27,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3179 to 2914. [2023-11-29 02:55:27,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2914 states, 2817 states have (on average 1.8008519701810437) internal successors, (5073), 2823 states have internal predecessors, (5073), 67 states have call successors, (67), 24 states have call predecessors, (67), 28 states have return successors, (84), 70 states have call predecessors, (84), 67 states have call successors, (84) [2023-11-29 02:55:27,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2914 states to 2914 states and 5224 transitions. [2023-11-29 02:55:27,299 INFO L78 Accepts]: Start accepts. Automaton has 2914 states and 5224 transitions. Word has length 101 [2023-11-29 02:55:27,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:55:27,299 INFO L495 AbstractCegarLoop]: Abstraction has 2914 states and 5224 transitions. [2023-11-29 02:55:27,300 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 02:55:27,300 INFO L276 IsEmpty]: Start isEmpty. Operand 2914 states and 5224 transitions. [2023-11-29 02:55:27,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-11-29 02:55:27,303 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:55:27,303 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] [2023-11-29 02:55:27,303 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-29 02:55:27,303 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:55:27,304 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:55:27,304 INFO L85 PathProgramCache]: Analyzing trace with hash 1227159520, now seen corresponding path program 1 times [2023-11-29 02:55:27,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:55:27,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [725575543] [2023-11-29 02:55:27,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:55:27,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:55:27,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:55:27,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 02:55:27,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:55:27,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-29 02:55:27,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:55:27,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-29 02:55:27,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:55:27,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-11-29 02:55:27,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:55:27,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-11-29 02:55:27,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:55:27,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:55:27,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:55:27,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [725575543] [2023-11-29 02:55:27,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [725575543] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:55:27,492 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:55:27,492 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 02:55:27,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694883712] [2023-11-29 02:55:27,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:55:27,493 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 02:55:27,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:55:27,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 02:55:27,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-29 02:55:27,495 INFO L87 Difference]: Start difference. First operand 2914 states and 5224 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 02:55:28,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:55:28,455 INFO L93 Difference]: Finished difference Result 3965 states and 6956 transitions. [2023-11-29 02:55:28,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 02:55:28,455 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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 101 [2023-11-29 02:55:28,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:55:28,475 INFO L225 Difference]: With dead ends: 3965 [2023-11-29 02:55:28,475 INFO L226 Difference]: Without dead ends: 3184 [2023-11-29 02:55:28,479 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-11-29 02:55:28,480 INFO L413 NwaCegarLoop]: 4107 mSDtfsCounter, 4644 mSDsluCounter, 12226 mSDsCounter, 0 mSdLazyCounter, 963 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4658 SdHoareTripleChecker+Valid, 16333 SdHoareTripleChecker+Invalid, 1036 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 963 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-29 02:55:28,481 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4658 Valid, 16333 Invalid, 1036 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 963 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-29 02:55:28,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3184 states. [2023-11-29 02:55:28,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3184 to 2914. [2023-11-29 02:55:28,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2914 states, 2817 states have (on average 1.7990770323038694) internal successors, (5068), 2823 states have internal predecessors, (5068), 67 states have call successors, (67), 24 states have call predecessors, (67), 28 states have return successors, (84), 70 states have call predecessors, (84), 67 states have call successors, (84) [2023-11-29 02:55:28,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2914 states to 2914 states and 5219 transitions. [2023-11-29 02:55:28,593 INFO L78 Accepts]: Start accepts. Automaton has 2914 states and 5219 transitions. Word has length 101 [2023-11-29 02:55:28,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:55:28,594 INFO L495 AbstractCegarLoop]: Abstraction has 2914 states and 5219 transitions. [2023-11-29 02:55:28,594 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 02:55:28,594 INFO L276 IsEmpty]: Start isEmpty. Operand 2914 states and 5219 transitions. [2023-11-29 02:55:28,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-11-29 02:55:28,597 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:55:28,597 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] [2023-11-29 02:55:28,597 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-29 02:55:28,597 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:55:28,598 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:55:28,598 INFO L85 PathProgramCache]: Analyzing trace with hash -1742951582, now seen corresponding path program 1 times [2023-11-29 02:55:28,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:55:28,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [215106743] [2023-11-29 02:55:28,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:55:28,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:55:28,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:55:28,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 02:55:28,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:55:28,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-29 02:55:28,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:55:28,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-29 02:55:28,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:55:28,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-11-29 02:55:28,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:55:28,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-11-29 02:55:28,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:55:28,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:55:28,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:55:28,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [215106743] [2023-11-29 02:55:28,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [215106743] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:55:28,862 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:55:28,862 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 02:55:28,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543148189] [2023-11-29 02:55:28,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:55:28,863 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 02:55:28,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:55:28,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 02:55:28,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-29 02:55:28,864 INFO L87 Difference]: Start difference. First operand 2914 states and 5219 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 02:55:29,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:55:29,871 INFO L93 Difference]: Finished difference Result 3961 states and 6935 transitions. [2023-11-29 02:55:29,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 02:55:29,872 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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 101 [2023-11-29 02:55:29,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:55:29,886 INFO L225 Difference]: With dead ends: 3961 [2023-11-29 02:55:29,886 INFO L226 Difference]: Without dead ends: 3180 [2023-11-29 02:55:29,889 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-11-29 02:55:29,890 INFO L413 NwaCegarLoop]: 4107 mSDtfsCounter, 4642 mSDsluCounter, 12226 mSDsCounter, 0 mSdLazyCounter, 949 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4656 SdHoareTripleChecker+Valid, 16333 SdHoareTripleChecker+Invalid, 1022 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 949 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-29 02:55:29,891 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4656 Valid, 16333 Invalid, 1022 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 949 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-29 02:55:29,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3180 states. [2023-11-29 02:55:29,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3180 to 2914. [2023-11-29 02:55:29,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2914 states, 2817 states have (on average 1.797302094426695) internal successors, (5063), 2823 states have internal predecessors, (5063), 67 states have call successors, (67), 24 states have call predecessors, (67), 28 states have return successors, (84), 70 states have call predecessors, (84), 67 states have call successors, (84) [2023-11-29 02:55:29,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2914 states to 2914 states and 5214 transitions. [2023-11-29 02:55:29,966 INFO L78 Accepts]: Start accepts. Automaton has 2914 states and 5214 transitions. Word has length 101 [2023-11-29 02:55:29,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:55:29,966 INFO L495 AbstractCegarLoop]: Abstraction has 2914 states and 5214 transitions. [2023-11-29 02:55:29,967 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 02:55:29,967 INFO L276 IsEmpty]: Start isEmpty. Operand 2914 states and 5214 transitions. [2023-11-29 02:55:29,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-11-29 02:55:29,968 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:55:29,968 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] [2023-11-29 02:55:29,969 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-29 02:55:29,969 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:55:29,969 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:55:29,969 INFO L85 PathProgramCache]: Analyzing trace with hash -176193632, now seen corresponding path program 1 times [2023-11-29 02:55:29,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:55:29,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [406512888] [2023-11-29 02:55:29,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:55:29,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:55:29,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:55:30,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 02:55:30,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:55:30,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-29 02:55:30,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:55:30,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-29 02:55:30,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:55:30,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-11-29 02:55:30,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:55:30,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-11-29 02:55:30,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:55:30,125 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:55:30,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:55:30,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [406512888] [2023-11-29 02:55:30,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [406512888] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:55:30,126 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:55:30,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 02:55:30,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869175287] [2023-11-29 02:55:30,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:55:30,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 02:55:30,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:55:30,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 02:55:30,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-29 02:55:30,128 INFO L87 Difference]: Start difference. First operand 2914 states and 5214 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 02:55:31,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:55:31,130 INFO L93 Difference]: Finished difference Result 3956 states and 6912 transitions. [2023-11-29 02:55:31,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 02:55:31,130 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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 101 [2023-11-29 02:55:31,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:55:31,149 INFO L225 Difference]: With dead ends: 3956 [2023-11-29 02:55:31,149 INFO L226 Difference]: Without dead ends: 3175 [2023-11-29 02:55:31,152 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-11-29 02:55:31,153 INFO L413 NwaCegarLoop]: 4107 mSDtfsCounter, 4555 mSDsluCounter, 16280 mSDsCounter, 0 mSdLazyCounter, 1040 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4569 SdHoareTripleChecker+Valid, 20387 SdHoareTripleChecker+Invalid, 1093 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 1040 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-29 02:55:31,154 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4569 Valid, 20387 Invalid, 1093 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 1040 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-29 02:55:31,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3175 states. [2023-11-29 02:55:31,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3175 to 2914. [2023-11-29 02:55:31,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2914 states, 2817 states have (on average 1.7955271565495208) internal successors, (5058), 2823 states have internal predecessors, (5058), 67 states have call successors, (67), 24 states have call predecessors, (67), 28 states have return successors, (84), 70 states have call predecessors, (84), 67 states have call successors, (84) [2023-11-29 02:55:31,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2914 states to 2914 states and 5209 transitions. [2023-11-29 02:55:31,252 INFO L78 Accepts]: Start accepts. Automaton has 2914 states and 5209 transitions. Word has length 101 [2023-11-29 02:55:31,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:55:31,252 INFO L495 AbstractCegarLoop]: Abstraction has 2914 states and 5209 transitions. [2023-11-29 02:55:31,252 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 02:55:31,253 INFO L276 IsEmpty]: Start isEmpty. Operand 2914 states and 5209 transitions. [2023-11-29 02:55:31,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-11-29 02:55:31,255 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:55:31,255 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] [2023-11-29 02:55:31,255 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-29 02:55:31,255 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:55:31,256 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:55:31,256 INFO L85 PathProgramCache]: Analyzing trace with hash -1234031710, now seen corresponding path program 1 times [2023-11-29 02:55:31,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:55:31,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [876499748] [2023-11-29 02:55:31,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:55:31,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:55:31,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:55:31,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 02:55:31,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:55:31,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-29 02:55:31,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:55:31,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-29 02:55:31,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:55:31,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-11-29 02:55:31,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:55:31,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-11-29 02:55:31,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:55:31,492 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:55:31,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:55:31,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [876499748] [2023-11-29 02:55:31,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [876499748] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:55:31,493 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:55:31,493 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 02:55:31,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670029083] [2023-11-29 02:55:31,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:55:31,493 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 02:55:31,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:55:31,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 02:55:31,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 02:55:31,494 INFO L87 Difference]: Start difference. First operand 2914 states and 5209 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 02:55:33,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:55:33,359 INFO L93 Difference]: Finished difference Result 4927 states and 8441 transitions. [2023-11-29 02:55:33,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-29 02:55:33,360 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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 101 [2023-11-29 02:55:33,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:55:33,383 INFO L225 Difference]: With dead ends: 4927 [2023-11-29 02:55:33,383 INFO L226 Difference]: Without dead ends: 4148 [2023-11-29 02:55:33,387 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-11-29 02:55:33,388 INFO L413 NwaCegarLoop]: 4237 mSDtfsCounter, 4734 mSDsluCounter, 16733 mSDsCounter, 0 mSdLazyCounter, 2073 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4747 SdHoareTripleChecker+Valid, 20970 SdHoareTripleChecker+Invalid, 2129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 2073 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-11-29 02:55:33,388 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4747 Valid, 20970 Invalid, 2129 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [56 Valid, 2073 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-11-29 02:55:33,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4148 states. [2023-11-29 02:55:33,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4148 to 3681. [2023-11-29 02:55:33,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3681 states, 3496 states have (on average 1.7502860411899313) internal successors, (6119), 3506 states have internal predecessors, (6119), 127 states have call successors, (127), 48 states have call predecessors, (127), 56 states have return successors, (170), 134 states have call predecessors, (170), 127 states have call successors, (170) [2023-11-29 02:55:33,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3681 states to 3681 states and 6416 transitions. [2023-11-29 02:55:33,531 INFO L78 Accepts]: Start accepts. Automaton has 3681 states and 6416 transitions. Word has length 101 [2023-11-29 02:55:33,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:55:33,531 INFO L495 AbstractCegarLoop]: Abstraction has 3681 states and 6416 transitions. [2023-11-29 02:55:33,532 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 02:55:33,532 INFO L276 IsEmpty]: Start isEmpty. Operand 3681 states and 6416 transitions. [2023-11-29 02:55:33,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-11-29 02:55:33,536 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:55:33,536 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] [2023-11-29 02:55:33,536 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-29 02:55:33,536 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:55:33,537 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:55:33,537 INFO L85 PathProgramCache]: Analyzing trace with hash 1918433120, now seen corresponding path program 1 times [2023-11-29 02:55:33,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:55:33,537 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1130461857] [2023-11-29 02:55:33,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:55:33,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:55:33,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:55:33,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 02:55:33,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:55:33,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-29 02:55:33,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:55:33,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-29 02:55:33,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:55:33,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-11-29 02:55:33,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:55:33,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-11-29 02:55:33,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:55:33,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:55:33,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:55:33,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1130461857] [2023-11-29 02:55:33,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1130461857] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:55:33,719 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:55:33,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 02:55:33,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153906374] [2023-11-29 02:55:33,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:55:33,720 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 02:55:33,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:55:33,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 02:55:33,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 02:55:33,720 INFO L87 Difference]: Start difference. First operand 3681 states and 6416 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 02:55:36,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:55:36,008 INFO L93 Difference]: Finished difference Result 8286 states and 13806 transitions. [2023-11-29 02:55:36,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-29 02:55:36,009 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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 101 [2023-11-29 02:55:36,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:55:36,041 INFO L225 Difference]: With dead ends: 8286 [2023-11-29 02:55:36,041 INFO L226 Difference]: Without dead ends: 6740 [2023-11-29 02:55:36,047 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-11-29 02:55:36,048 INFO L413 NwaCegarLoop]: 4236 mSDtfsCounter, 4964 mSDsluCounter, 16728 mSDsCounter, 0 mSdLazyCounter, 2054 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4984 SdHoareTripleChecker+Valid, 20964 SdHoareTripleChecker+Invalid, 2113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 2054 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-11-29 02:55:36,048 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4984 Valid, 20964 Invalid, 2113 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [59 Valid, 2054 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-11-29 02:55:36,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6740 states. [2023-11-29 02:55:36,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6740 to 5206. [2023-11-29 02:55:36,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5206 states, 4853 states have (on average 1.6985369874304554) internal successors, (8243), 4871 states have internal predecessors, (8243), 239 states have call successors, (239), 96 states have call predecessors, (239), 112 states have return successors, (352), 254 states have call predecessors, (352), 239 states have call successors, (352) [2023-11-29 02:55:36,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5206 states to 5206 states and 8834 transitions. [2023-11-29 02:55:36,267 INFO L78 Accepts]: Start accepts. Automaton has 5206 states and 8834 transitions. Word has length 101 [2023-11-29 02:55:36,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:55:36,267 INFO L495 AbstractCegarLoop]: Abstraction has 5206 states and 8834 transitions. [2023-11-29 02:55:36,268 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 02:55:36,268 INFO L276 IsEmpty]: Start isEmpty. Operand 5206 states and 8834 transitions. [2023-11-29 02:55:36,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-11-29 02:55:36,271 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:55:36,271 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] [2023-11-29 02:55:36,271 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-29 02:55:36,272 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:55:36,272 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:55:36,272 INFO L85 PathProgramCache]: Analyzing trace with hash -2136294430, now seen corresponding path program 1 times [2023-11-29 02:55:36,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:55:36,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2132161278] [2023-11-29 02:55:36,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:55:36,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:55:36,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:55:36,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 02:55:36,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:55:36,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-29 02:55:36,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:55:36,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-29 02:55:36,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:55:36,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-11-29 02:55:36,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:55:36,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-11-29 02:55:36,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:55:36,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:55:36,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:55:36,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2132161278] [2023-11-29 02:55:36,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2132161278] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:55:36,425 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:55:36,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 02:55:36,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387696372] [2023-11-29 02:55:36,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:55:36,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 02:55:36,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:55:36,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 02:55:36,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 02:55:36,427 INFO L87 Difference]: Start difference. First operand 5206 states and 8834 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 02:55:38,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:55:38,749 INFO L93 Difference]: Finished difference Result 13949 states and 22916 transitions. [2023-11-29 02:55:38,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-29 02:55:38,749 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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 101 [2023-11-29 02:55:38,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:55:38,785 INFO L225 Difference]: With dead ends: 13949 [2023-11-29 02:55:38,785 INFO L226 Difference]: Without dead ends: 10878 [2023-11-29 02:55:38,797 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-11-29 02:55:38,798 INFO L413 NwaCegarLoop]: 4235 mSDtfsCounter, 4907 mSDsluCounter, 16728 mSDsCounter, 0 mSdLazyCounter, 1994 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4927 SdHoareTripleChecker+Valid, 20963 SdHoareTripleChecker+Invalid, 2053 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 1994 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-11-29 02:55:38,798 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4927 Valid, 20963 Invalid, 2053 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [59 Valid, 1994 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-11-29 02:55:38,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10878 states. [2023-11-29 02:55:39,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10878 to 8271. [2023-11-29 02:55:39,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8271 states, 7590 states have (on average 1.6517786561264822) internal successors, (12537), 7624 states have internal predecessors, (12537), 455 states have call successors, (455), 192 states have call predecessors, (455), 224 states have return successors, (762), 486 states have call predecessors, (762), 455 states have call successors, (762) [2023-11-29 02:55:39,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8271 states to 8271 states and 13754 transitions. [2023-11-29 02:55:39,153 INFO L78 Accepts]: Start accepts. Automaton has 8271 states and 13754 transitions. Word has length 101 [2023-11-29 02:55:39,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:55:39,153 INFO L495 AbstractCegarLoop]: Abstraction has 8271 states and 13754 transitions. [2023-11-29 02:55:39,153 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 02:55:39,154 INFO L276 IsEmpty]: Start isEmpty. Operand 8271 states and 13754 transitions. [2023-11-29 02:55:39,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-11-29 02:55:39,161 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:55:39,161 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] [2023-11-29 02:55:39,161 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-29 02:55:39,162 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:55:39,162 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:55:39,162 INFO L85 PathProgramCache]: Analyzing trace with hash -2109228828, now seen corresponding path program 1 times [2023-11-29 02:55:39,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:55:39,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [773632537] [2023-11-29 02:55:39,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:55:39,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:55:39,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:55:39,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 02:55:39,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:55:39,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-29 02:55:39,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:55:39,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-29 02:55:39,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:55:39,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-11-29 02:55:39,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:55:39,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-11-29 02:55:39,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:55:39,342 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:55:39,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:55:39,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [773632537] [2023-11-29 02:55:39,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [773632537] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:55:39,343 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:55:39,343 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 02:55:39,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78220439] [2023-11-29 02:55:39,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:55:39,344 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 02:55:39,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:55:39,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 02:55:39,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 02:55:39,345 INFO L87 Difference]: Start difference. First operand 8271 states and 13754 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 02:55:41,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:55:41,742 INFO L93 Difference]: Finished difference Result 25224 states and 41230 transitions. [2023-11-29 02:55:41,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-29 02:55:41,742 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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 101 [2023-11-29 02:55:41,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:55:41,786 INFO L225 Difference]: With dead ends: 25224 [2023-11-29 02:55:41,787 INFO L226 Difference]: Without dead ends: 19088 [2023-11-29 02:55:41,804 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-11-29 02:55:41,805 INFO L413 NwaCegarLoop]: 4204 mSDtfsCounter, 4884 mSDsluCounter, 16679 mSDsCounter, 0 mSdLazyCounter, 1857 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4904 SdHoareTripleChecker+Valid, 20883 SdHoareTripleChecker+Invalid, 1924 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 1857 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-11-29 02:55:41,805 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4904 Valid, 20883 Invalid, 1924 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [67 Valid, 1857 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-11-29 02:55:41,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19088 states. [2023-11-29 02:55:42,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19088 to 14401. [2023-11-29 02:55:42,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14401 states, 13080 states have (on average 1.6175076452599388) internal successors, (21157), 13146 states have internal predecessors, (21157), 871 states have call successors, (871), 384 states have call predecessors, (871), 448 states have return successors, (1728), 934 states have call predecessors, (1728), 871 states have call successors, (1728) [2023-11-29 02:55:42,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14401 states to 14401 states and 23756 transitions. [2023-11-29 02:55:42,482 INFO L78 Accepts]: Start accepts. Automaton has 14401 states and 23756 transitions. Word has length 101 [2023-11-29 02:55:42,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:55:42,483 INFO L495 AbstractCegarLoop]: Abstraction has 14401 states and 23756 transitions. [2023-11-29 02:55:42,483 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 02:55:42,483 INFO L276 IsEmpty]: Start isEmpty. Operand 14401 states and 23756 transitions. [2023-11-29 02:55:42,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-11-29 02:55:42,492 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:55:42,492 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] [2023-11-29 02:55:42,493 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-29 02:55:42,493 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:55:42,493 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:55:42,493 INFO L85 PathProgramCache]: Analyzing trace with hash 108401570, now seen corresponding path program 1 times [2023-11-29 02:55:42,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:55:42,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1057245142] [2023-11-29 02:55:42,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:55:42,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:55:42,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:55:42,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 02:55:42,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:55:42,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-29 02:55:42,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:55:42,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-29 02:55:42,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:55:42,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-11-29 02:55:42,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:55:42,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-11-29 02:55:42,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:55:42,640 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:55:42,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:55:42,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1057245142] [2023-11-29 02:55:42,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1057245142] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:55:42,640 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:55:42,640 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 02:55:42,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491928827] [2023-11-29 02:55:42,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:55:42,641 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 02:55:42,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:55:42,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 02:55:42,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 02:55:42,642 INFO L87 Difference]: Start difference. First operand 14401 states and 23756 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 02:55:45,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:55:45,734 INFO L93 Difference]: Finished difference Result 47294 states and 77674 transitions. [2023-11-29 02:55:45,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-29 02:55:45,735 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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 101 [2023-11-29 02:55:45,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:55:45,823 INFO L225 Difference]: With dead ends: 47294 [2023-11-29 02:55:45,824 INFO L226 Difference]: Without dead ends: 35028 [2023-11-29 02:55:45,872 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-11-29 02:55:45,873 INFO L413 NwaCegarLoop]: 4235 mSDtfsCounter, 4775 mSDsluCounter, 16728 mSDsCounter, 0 mSdLazyCounter, 2171 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4787 SdHoareTripleChecker+Valid, 20963 SdHoareTripleChecker+Invalid, 2229 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 2171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-11-29 02:55:45,873 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4787 Valid, 20963 Invalid, 2229 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [58 Valid, 2171 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-11-29 02:55:45,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35028 states. [2023-11-29 02:55:46,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35028 to 26661. [2023-11-29 02:55:47,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26661 states, 24092 states have (on average 1.596422048812884) internal successors, (38461), 24222 states have internal predecessors, (38461), 1671 states have call successors, (1671), 768 states have call predecessors, (1671), 896 states have return successors, (4114), 1798 states have call predecessors, (4114), 1671 states have call successors, (4114) [2023-11-29 02:55:47,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26661 states to 26661 states and 44246 transitions. [2023-11-29 02:55:47,063 INFO L78 Accepts]: Start accepts. Automaton has 26661 states and 44246 transitions. Word has length 101 [2023-11-29 02:55:47,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:55:47,063 INFO L495 AbstractCegarLoop]: Abstraction has 26661 states and 44246 transitions. [2023-11-29 02:55:47,063 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 02:55:47,063 INFO L276 IsEmpty]: Start isEmpty. Operand 26661 states and 44246 transitions. [2023-11-29 02:55:47,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-11-29 02:55:47,079 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:55:47,079 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] [2023-11-29 02:55:47,079 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-29 02:55:47,079 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:55:47,079 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:55:47,079 INFO L85 PathProgramCache]: Analyzing trace with hash 1842506020, now seen corresponding path program 1 times [2023-11-29 02:55:47,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:55:47,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021006131] [2023-11-29 02:55:47,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:55:47,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:55:47,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:55:47,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 02:55:47,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:55:47,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-29 02:55:47,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:55:47,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-29 02:55:47,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:55:47,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-11-29 02:55:47,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:55:47,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-11-29 02:55:47,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:55:47,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:55:47,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:55:47,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1021006131] [2023-11-29 02:55:47,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1021006131] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:55:47,223 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:55:47,223 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 02:55:47,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354616215] [2023-11-29 02:55:47,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:55:47,224 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 02:55:47,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:55:47,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 02:55:47,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 02:55:47,224 INFO L87 Difference]: Start difference. First operand 26661 states and 44246 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 02:55:50,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:55:50,474 INFO L93 Difference]: Finished difference Result 90474 states and 150842 transitions. [2023-11-29 02:55:50,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-29 02:55:50,474 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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 101 [2023-11-29 02:55:50,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:55:50,711 INFO L225 Difference]: With dead ends: 90474 [2023-11-29 02:55:50,711 INFO L226 Difference]: Without dead ends: 65948 [2023-11-29 02:55:50,786 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-11-29 02:55:50,787 INFO L413 NwaCegarLoop]: 4238 mSDtfsCounter, 4805 mSDsluCounter, 16728 mSDsCounter, 0 mSdLazyCounter, 1970 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4825 SdHoareTripleChecker+Valid, 20966 SdHoareTripleChecker+Invalid, 2029 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 1970 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-11-29 02:55:50,787 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4825 Valid, 20966 Invalid, 2029 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 1970 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-11-29 02:55:50,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65948 states. [2023-11-29 02:55:53,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65948 to 51181. [2023-11-29 02:55:53,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51181 states, 46180 states have (on average 1.585036812472932) internal successors, (73197), 46438 states have internal predecessors, (73197), 3207 states have call successors, (3207), 1536 states have call predecessors, (3207), 1792 states have return successors, (10280), 3462 states have call predecessors, (10280), 3207 states have call successors, (10280) [2023-11-29 02:55:53,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51181 states to 51181 states and 86684 transitions. [2023-11-29 02:55:53,475 INFO L78 Accepts]: Start accepts. Automaton has 51181 states and 86684 transitions. Word has length 101 [2023-11-29 02:55:53,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:55:53,476 INFO L495 AbstractCegarLoop]: Abstraction has 51181 states and 86684 transitions. [2023-11-29 02:55:53,476 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 02:55:53,476 INFO L276 IsEmpty]: Start isEmpty. Operand 51181 states and 86684 transitions. [2023-11-29 02:55:53,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-11-29 02:55:53,519 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:55:53,520 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] [2023-11-29 02:55:53,520 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-29 02:55:53,520 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:55:53,520 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:55:53,520 INFO L85 PathProgramCache]: Analyzing trace with hash -1565238430, now seen corresponding path program 1 times [2023-11-29 02:55:53,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:55:53,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896680011] [2023-11-29 02:55:53,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:55:53,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:55:53,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:55:53,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 02:55:53,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:55:53,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-29 02:55:53,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:55:53,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-29 02:55:53,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:55:53,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-11-29 02:55:53,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:55:53,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-11-29 02:55:53,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:55:53,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:55:53,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:55:53,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896680011] [2023-11-29 02:55:53,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [896680011] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:55:53,689 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:55:53,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 02:55:53,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168290856] [2023-11-29 02:55:53,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:55:53,690 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 02:55:53,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:55:53,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 02:55:53,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 02:55:53,691 INFO L87 Difference]: Start difference. First operand 51181 states and 86684 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 02:55:59,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:55:59,166 INFO L93 Difference]: Finished difference Result 174914 states and 299682 transitions. [2023-11-29 02:55:59,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-29 02:55:59,166 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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 101 [2023-11-29 02:55:59,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:55:59,581 INFO L225 Difference]: With dead ends: 174914 [2023-11-29 02:55:59,581 INFO L226 Difference]: Without dead ends: 125868 [2023-11-29 02:55:59,693 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-11-29 02:55:59,693 INFO L413 NwaCegarLoop]: 4236 mSDtfsCounter, 4756 mSDsluCounter, 16728 mSDsCounter, 0 mSdLazyCounter, 2056 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4768 SdHoareTripleChecker+Valid, 20964 SdHoareTripleChecker+Invalid, 2115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 2056 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-11-29 02:55:59,694 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4768 Valid, 20964 Invalid, 2115 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [59 Valid, 2056 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-11-29 02:55:59,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125868 states. [2023-11-29 02:56:04,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125868 to 100221. [2023-11-29 02:56:04,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100221 states, 90484 states have (on average 1.5795610273639538) internal successors, (142925), 90998 states have internal predecessors, (142925), 6151 states have call successors, (6151), 3072 states have call predecessors, (6151), 3584 states have return successors, (26858), 6662 states have call predecessors, (26858), 6151 states have call successors, (26858) [2023-11-29 02:56:04,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100221 states to 100221 states and 175934 transitions. [2023-11-29 02:56:04,917 INFO L78 Accepts]: Start accepts. Automaton has 100221 states and 175934 transitions. Word has length 101 [2023-11-29 02:56:04,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:56:04,917 INFO L495 AbstractCegarLoop]: Abstraction has 100221 states and 175934 transitions. [2023-11-29 02:56:04,917 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 02:56:04,917 INFO L276 IsEmpty]: Start isEmpty. Operand 100221 states and 175934 transitions. [2023-11-29 02:56:04,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-11-29 02:56:04,978 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:56:04,978 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] [2023-11-29 02:56:04,978 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-29 02:56:04,978 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:56:04,979 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:56:04,979 INFO L85 PathProgramCache]: Analyzing trace with hash 818686308, now seen corresponding path program 1 times [2023-11-29 02:56:04,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:56:04,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [956272330] [2023-11-29 02:56:04,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:56:04,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:56:04,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:56:05,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 02:56:05,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:56:05,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-29 02:56:05,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:56:05,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-29 02:56:05,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:56:05,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-11-29 02:56:05,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:56:05,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-11-29 02:56:05,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:56:05,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:56:05,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:56:05,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [956272330] [2023-11-29 02:56:05,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [956272330] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:56:05,124 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:56:05,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 02:56:05,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283581303] [2023-11-29 02:56:05,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:56:05,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 02:56:05,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:56:05,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 02:56:05,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-29 02:56:05,125 INFO L87 Difference]: Start difference. First operand 100221 states and 175934 transitions. Second operand has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 02:56:14,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:56:14,576 INFO L93 Difference]: Finished difference Result 338435 states and 586502 transitions. [2023-11-29 02:56:14,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 02:56:14,577 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 4 states have internal predecessors, (91), 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 101 [2023-11-29 02:56:14,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:56:15,347 INFO L225 Difference]: With dead ends: 338435 [2023-11-29 02:56:15,347 INFO L226 Difference]: Without dead ends: 240349 [2023-11-29 02:56:15,545 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2023-11-29 02:56:15,545 INFO L413 NwaCegarLoop]: 4285 mSDtfsCounter, 5001 mSDsluCounter, 12453 mSDsCounter, 0 mSdLazyCounter, 1712 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5034 SdHoareTripleChecker+Valid, 16738 SdHoareTripleChecker+Invalid, 1795 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 1712 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-11-29 02:56:15,546 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5034 Valid, 16738 Invalid, 1795 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 1712 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-11-29 02:56:15,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240349 states. [2023-11-29 02:56:24,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240349 to 195743. [2023-11-29 02:56:24,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195743 states, 176277 states have (on average 1.567096104426556) internal successors, (276243), 177815 states have internal predecessors, (276243), 12296 states have call successors, (12296), 6144 states have call predecessors, (12296), 7168 states have return successors, (53197), 12295 states have call predecessors, (53197), 12296 states have call successors, (53197) [2023-11-29 02:56:25,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195743 states to 195743 states and 341736 transitions. [2023-11-29 02:56:25,718 INFO L78 Accepts]: Start accepts. Automaton has 195743 states and 341736 transitions. Word has length 101 [2023-11-29 02:56:25,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:56:25,718 INFO L495 AbstractCegarLoop]: Abstraction has 195743 states and 341736 transitions. [2023-11-29 02:56:25,718 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 02:56:25,719 INFO L276 IsEmpty]: Start isEmpty. Operand 195743 states and 341736 transitions. [2023-11-29 02:56:26,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2023-11-29 02:56:26,288 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:56:26,288 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-11-29 02:56:26,288 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-29 02:56:26,289 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:56:26,289 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:56:26,289 INFO L85 PathProgramCache]: Analyzing trace with hash -536714256, now seen corresponding path program 1 times [2023-11-29 02:56:26,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:56:26,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1354014579] [2023-11-29 02:56:26,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:56:26,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:56:26,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:56:26,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 02:56:26,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:56:26,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-29 02:56:26,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:56:26,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-29 02:56:26,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:56:26,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-11-29 02:56:26,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:56:26,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-11-29 02:56:26,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:56:26,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-11-29 02:56:26,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:56:26,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-11-29 02:56:26,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:56:26,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2023-11-29 02:56:26,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:56:26,472 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-29 02:56:26,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:56:26,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1354014579] [2023-11-29 02:56:26,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1354014579] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 02:56:26,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1858746226] [2023-11-29 02:56:26,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:56:26,473 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:56:26,473 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2e9c228-4b8c-49e2-92c1-46595724fb13/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:56:26,474 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2e9c228-4b8c-49e2-92c1-46595724fb13/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:56:26,480 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2e9c228-4b8c-49e2-92c1-46595724fb13/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 02:56:26,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:56:26,645 INFO L262 TraceCheckSpWp]: Trace formula consists of 730 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 02:56:26,654 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:56:26,731 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2023-11-29 02:56:26,731 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 02:56:26,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1858746226] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:56:26,731 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 02:56:26,731 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 7 [2023-11-29 02:56:26,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149249672] [2023-11-29 02:56:26,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:56:26,732 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 02:56:26,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:56:26,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 02:56:26,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 02:56:26,733 INFO L87 Difference]: Start difference. First operand 195743 states and 341736 transitions. Second operand has 3 states, 3 states have (on average 40.0) internal successors, (120), 2 states have internal predecessors, (120), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-29 02:56:41,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:56:41,593 INFO L93 Difference]: Finished difference Result 579885 states and 1017754 transitions. [2023-11-29 02:56:41,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 02:56:41,593 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.0) internal successors, (120), 2 states have internal predecessors, (120), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 163 [2023-11-29 02:56:41,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:56:43,117 INFO L225 Difference]: With dead ends: 579885 [2023-11-29 02:56:43,117 INFO L226 Difference]: Without dead ends: 386277 [2023-11-29 02:56:43,600 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 02:56:43,601 INFO L413 NwaCegarLoop]: 4254 mSDtfsCounter, 4227 mSDsluCounter, 273 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4227 SdHoareTripleChecker+Valid, 4527 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 02:56:43,601 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4227 Valid, 4527 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 02:56:43,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 386277 states. [2023-11-29 02:57:00,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 386277 to 385251. [2023-11-29 02:57:00,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 385251 states, 346839 states have (on average 1.562266642447937) internal successors, (541855), 349913 states have internal predecessors, (541855), 24074 states have call successors, (24074), 12288 states have call predecessors, (24074), 14336 states have return successors, (105363), 23561 states have call predecessors, (105363), 24074 states have call successors, (105363) [2023-11-29 02:57:02,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385251 states to 385251 states and 671292 transitions. [2023-11-29 02:57:02,414 INFO L78 Accepts]: Start accepts. Automaton has 385251 states and 671292 transitions. Word has length 163 [2023-11-29 02:57:02,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:57:02,414 INFO L495 AbstractCegarLoop]: Abstraction has 385251 states and 671292 transitions. [2023-11-29 02:57:02,414 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.0) internal successors, (120), 2 states have internal predecessors, (120), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-29 02:57:02,414 INFO L276 IsEmpty]: Start isEmpty. Operand 385251 states and 671292 transitions. [2023-11-29 02:57:03,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2023-11-29 02:57:03,207 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:57:03,207 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-11-29 02:57:03,214 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2e9c228-4b8c-49e2-92c1-46595724fb13/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 02:57:03,407 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2e9c228-4b8c-49e2-92c1-46595724fb13/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-11-29 02:57:03,408 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:57:03,408 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:57:03,408 INFO L85 PathProgramCache]: Analyzing trace with hash 174784336, now seen corresponding path program 1 times [2023-11-29 02:57:03,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:57:03,408 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145583922] [2023-11-29 02:57:03,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:57:03,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:57:03,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:57:03,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 02:57:03,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:57:03,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-29 02:57:03,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:57:03,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-29 02:57:03,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:57:03,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-11-29 02:57:03,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:57:03,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-11-29 02:57:03,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:57:03,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-11-29 02:57:03,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:57:03,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-11-29 02:57:03,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:57:03,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2023-11-29 02:57:03,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:57:03,591 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-29 02:57:03,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:57:03,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145583922] [2023-11-29 02:57:03,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1145583922] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 02:57:03,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [756670208] [2023-11-29 02:57:03,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:57:03,591 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:57:03,592 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2e9c228-4b8c-49e2-92c1-46595724fb13/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:57:03,593 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2e9c228-4b8c-49e2-92c1-46595724fb13/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:57:03,600 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2e9c228-4b8c-49e2-92c1-46595724fb13/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 02:57:03,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:57:03,763 INFO L262 TraceCheckSpWp]: Trace formula consists of 724 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 02:57:03,768 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:57:03,849 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-11-29 02:57:03,850 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 02:57:03,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [756670208] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:57:03,850 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 02:57:03,850 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 7 [2023-11-29 02:57:03,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22967820] [2023-11-29 02:57:03,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:57:03,851 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 02:57:03,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:57:03,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 02:57:03,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 02:57:03,852 INFO L87 Difference]: Start difference. First operand 385251 states and 671292 transitions. Second operand has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 2 states have internal predecessors, (130), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-29 02:57:32,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:57:32,898 INFO L93 Difference]: Finished difference Result 1145337 states and 2006936 transitions. [2023-11-29 02:57:32,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 02:57:32,898 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 2 states have internal predecessors, (130), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 163 [2023-11-29 02:57:32,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:57:36,206 INFO L225 Difference]: With dead ends: 1145337 [2023-11-29 02:57:36,206 INFO L226 Difference]: Without dead ends: 762221 [2023-11-29 02:57:37,096 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 02:57:37,097 INFO L413 NwaCegarLoop]: 4254 mSDtfsCounter, 4217 mSDsluCounter, 273 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4217 SdHoareTripleChecker+Valid, 4527 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 02:57:37,097 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4217 Valid, 4527 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 02:57:37,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 762221 states.