./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/systemc/token_ring.11.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_c60b2db1-e8e9-436c-8f68-848fdb327cac/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c60b2db1-e8e9-436c-8f68-848fdb327cac/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_c60b2db1-e8e9-436c-8f68-848fdb327cac/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c60b2db1-e8e9-436c-8f68-848fdb327cac/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/systemc/token_ring.11.cil-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c60b2db1-e8e9-436c-8f68-848fdb327cac/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_c60b2db1-e8e9-436c-8f68-848fdb327cac/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 c5f603027c62ff37561a520351662dbe2fd253b52e04e36028cb9a624978ef8e --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 06:34:46,793 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 06:34:46,857 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c60b2db1-e8e9-436c-8f68-848fdb327cac/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-29 06:34:46,861 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 06:34:46,862 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 06:34:46,884 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 06:34:46,885 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 06:34:46,886 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 06:34:46,886 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 06:34:46,887 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 06:34:46,887 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 06:34:46,888 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 06:34:46,889 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 06:34:46,889 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 06:34:46,890 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 06:34:46,890 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 06:34:46,891 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 06:34:46,891 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 06:34:46,892 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 06:34:46,892 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 06:34:46,892 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 06:34:46,894 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 06:34:46,894 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 06:34:46,895 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 06:34:46,895 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 06:34:46,895 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 06:34:46,896 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 06:34:46,896 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 06:34:46,897 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 06:34:46,897 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 06:34:46,897 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 06:34:46,898 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 06:34:46,898 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 06:34:46,898 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 06:34:46,898 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 06:34:46,898 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 06:34:46,899 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 06:34:46,899 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 06:34:46,899 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 06:34:46,899 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 06:34:46,899 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 06:34:46,900 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 06:34:46,900 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_c60b2db1-e8e9-436c-8f68-848fdb327cac/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c60b2db1-e8e9-436c-8f68-848fdb327cac/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c5f603027c62ff37561a520351662dbe2fd253b52e04e36028cb9a624978ef8e [2023-11-29 06:34:47,108 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 06:34:47,129 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 06:34:47,132 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 06:34:47,133 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 06:34:47,134 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 06:34:47,135 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c60b2db1-e8e9-436c-8f68-848fdb327cac/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/systemc/token_ring.11.cil-2.c [2023-11-29 06:34:49,912 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 06:34:50,102 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 06:34:50,103 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c60b2db1-e8e9-436c-8f68-848fdb327cac/sv-benchmarks/c/systemc/token_ring.11.cil-2.c [2023-11-29 06:34:50,119 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c60b2db1-e8e9-436c-8f68-848fdb327cac/bin/uautomizer-verify-BQ2R08f2Ya/data/20092c407/1392ebcfb27e483ebd752df4089a18d7/FLAG1b63709d8 [2023-11-29 06:34:50,132 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c60b2db1-e8e9-436c-8f68-848fdb327cac/bin/uautomizer-verify-BQ2R08f2Ya/data/20092c407/1392ebcfb27e483ebd752df4089a18d7 [2023-11-29 06:34:50,135 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 06:34:50,137 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 06:34:50,138 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 06:34:50,138 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 06:34:50,143 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 06:34:50,143 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 06:34:50" (1/1) ... [2023-11-29 06:34:50,144 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@495cba1d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:34:50, skipping insertion in model container [2023-11-29 06:34:50,144 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 06:34:50" (1/1) ... [2023-11-29 06:34:50,190 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 06:34:50,312 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_c60b2db1-e8e9-436c-8f68-848fdb327cac/sv-benchmarks/c/systemc/token_ring.11.cil-2.c[671,684] [2023-11-29 06:34:50,437 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 06:34:50,451 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 06:34:50,460 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_c60b2db1-e8e9-436c-8f68-848fdb327cac/sv-benchmarks/c/systemc/token_ring.11.cil-2.c[671,684] [2023-11-29 06:34:50,523 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 06:34:50,543 INFO L206 MainTranslator]: Completed translation [2023-11-29 06:34:50,544 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:34:50 WrapperNode [2023-11-29 06:34:50,544 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 06:34:50,545 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 06:34:50,545 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 06:34:50,545 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 06:34:50,551 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:34:50" (1/1) ... [2023-11-29 06:34:50,565 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:34:50" (1/1) ... [2023-11-29 06:34:50,611 INFO L138 Inliner]: procedures = 50, calls = 64, calls flagged for inlining = 34, calls inlined = 34, statements flattened = 819 [2023-11-29 06:34:50,611 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 06:34:50,612 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 06:34:50,612 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 06:34:50,612 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 06:34:50,621 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:34:50" (1/1) ... [2023-11-29 06:34:50,621 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:34:50" (1/1) ... [2023-11-29 06:34:50,625 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:34:50" (1/1) ... [2023-11-29 06:34:50,640 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-11-29 06:34:50,641 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:34:50" (1/1) ... [2023-11-29 06:34:50,641 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:34:50" (1/1) ... [2023-11-29 06:34:50,654 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:34:50" (1/1) ... [2023-11-29 06:34:50,666 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:34:50" (1/1) ... [2023-11-29 06:34:50,669 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:34:50" (1/1) ... [2023-11-29 06:34:50,673 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:34:50" (1/1) ... [2023-11-29 06:34:50,680 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 06:34:50,681 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 06:34:50,681 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 06:34:50,681 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 06:34:50,682 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:34:50" (1/1) ... [2023-11-29 06:34:50,689 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 06:34:50,700 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c60b2db1-e8e9-436c-8f68-848fdb327cac/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:34:50,718 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c60b2db1-e8e9-436c-8f68-848fdb327cac/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 06:34:50,726 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c60b2db1-e8e9-436c-8f68-848fdb327cac/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 06:34:50,754 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 06:34:50,755 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2023-11-29 06:34:50,755 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2023-11-29 06:34:50,755 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2023-11-29 06:34:50,756 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2023-11-29 06:34:50,756 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2023-11-29 06:34:50,756 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2023-11-29 06:34:50,756 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2023-11-29 06:34:50,756 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2023-11-29 06:34:50,756 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2023-11-29 06:34:50,757 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2023-11-29 06:34:50,757 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2023-11-29 06:34:50,757 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2023-11-29 06:34:50,757 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 06:34:50,757 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 06:34:50,758 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 06:34:50,869 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 06:34:50,872 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 06:34:51,565 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 06:34:51,631 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 06:34:51,631 INFO L309 CfgBuilder]: Removed 14 assume(true) statements. [2023-11-29 06:34:51,632 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 06:34:51 BoogieIcfgContainer [2023-11-29 06:34:51,632 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 06:34:51,634 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 06:34:51,635 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 06:34:51,638 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 06:34:51,638 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 06:34:50" (1/3) ... [2023-11-29 06:34:51,639 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d6dfede and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 06:34:51, skipping insertion in model container [2023-11-29 06:34:51,639 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:34:50" (2/3) ... [2023-11-29 06:34:51,639 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d6dfede and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 06:34:51, skipping insertion in model container [2023-11-29 06:34:51,640 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 06:34:51" (3/3) ... [2023-11-29 06:34:51,641 INFO L112 eAbstractionObserver]: Analyzing ICFG token_ring.11.cil-2.c [2023-11-29 06:34:51,660 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 06:34:51,660 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-29 06:34:51,712 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 06:34:51,718 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;@35c46f7e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 06:34:51,718 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-29 06:34:51,723 INFO L276 IsEmpty]: Start isEmpty. Operand has 325 states, 292 states have (on average 1.7328767123287672) internal successors, (506), 294 states have internal predecessors, (506), 25 states have call successors, (25), 6 states have call predecessors, (25), 6 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2023-11-29 06:34:51,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2023-11-29 06:34:51,738 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:34:51,739 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:34:51,739 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:34:51,743 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:34:51,743 INFO L85 PathProgramCache]: Analyzing trace with hash -1024203250, now seen corresponding path program 1 times [2023-11-29 06:34:51,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:34:51,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041146606] [2023-11-29 06:34:51,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:34:51,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:34:51,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:34:52,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 06:34:52,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:34:52,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-29 06:34:52,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:34:52,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-29 06:34:52,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:34:52,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-11-29 06:34:52,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:34:52,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2023-11-29 06:34:52,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:34:52,349 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:34:52,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:34:52,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041146606] [2023-11-29 06:34:52,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1041146606] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:34:52,351 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:34:52,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 06:34:52,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716262130] [2023-11-29 06:34:52,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:34:52,358 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 06:34:52,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:34:52,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 06:34:52,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 06:34:52,388 INFO L87 Difference]: Start difference. First operand has 325 states, 292 states have (on average 1.7328767123287672) internal successors, (506), 294 states have internal predecessors, (506), 25 states have call successors, (25), 6 states have call predecessors, (25), 6 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) Second operand has 5 states, 5 states have (on average 28.0) internal successors, (140), 3 states have internal predecessors, (140), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 06:34:54,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:34:54,652 INFO L93 Difference]: Finished difference Result 764 states and 1317 transitions. [2023-11-29 06:34:54,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 06:34:54,655 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 28.0) internal successors, (140), 3 states have internal predecessors, (140), 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 150 [2023-11-29 06:34:54,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:34:54,671 INFO L225 Difference]: With dead ends: 764 [2023-11-29 06:34:54,672 INFO L226 Difference]: Without dead ends: 443 [2023-11-29 06:34:54,678 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-29 06:34:54,682 INFO L413 NwaCegarLoop]: 279 mSDtfsCounter, 906 mSDsluCounter, 305 mSDsCounter, 0 mSdLazyCounter, 981 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 929 SdHoareTripleChecker+Valid, 584 SdHoareTripleChecker+Invalid, 1035 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 981 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-11-29 06:34:54,683 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [929 Valid, 584 Invalid, 1035 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 981 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-11-29 06:34:54,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 443 states. [2023-11-29 06:34:54,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 443 to 323. [2023-11-29 06:34:54,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 323 states, 291 states have (on average 1.6288659793814433) internal successors, (474), 292 states have internal predecessors, (474), 25 states have call successors, (25), 6 states have call predecessors, (25), 6 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2023-11-29 06:34:54,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 524 transitions. [2023-11-29 06:34:54,770 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 524 transitions. Word has length 150 [2023-11-29 06:34:54,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:34:54,770 INFO L495 AbstractCegarLoop]: Abstraction has 323 states and 524 transitions. [2023-11-29 06:34:54,771 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 28.0) internal successors, (140), 3 states have internal predecessors, (140), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 06:34:54,771 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 524 transitions. [2023-11-29 06:34:54,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2023-11-29 06:34:54,775 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:34:54,775 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:34:54,776 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-29 06:34:54,776 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:34:54,777 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:34:54,777 INFO L85 PathProgramCache]: Analyzing trace with hash -1450757748, now seen corresponding path program 1 times [2023-11-29 06:34:54,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:34:54,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [669321944] [2023-11-29 06:34:54,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:34:54,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:34:54,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:34:54,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 06:34:54,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:34:54,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-29 06:34:54,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:34:54,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-29 06:34:55,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:34:55,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-11-29 06:34:55,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:34:55,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2023-11-29 06:34:55,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:34:55,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:34:55,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:34:55,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [669321944] [2023-11-29 06:34:55,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [669321944] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:34:55,054 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:34:55,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 06:34:55,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987568993] [2023-11-29 06:34:55,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:34:55,056 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 06:34:55,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:34:55,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 06:34:55,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 06:34:55,058 INFO L87 Difference]: Start difference. First operand 323 states and 524 transitions. Second operand has 5 states, 5 states have (on average 28.0) internal successors, (140), 3 states have internal predecessors, (140), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 06:34:56,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:34:56,953 INFO L93 Difference]: Finished difference Result 752 states and 1238 transitions. [2023-11-29 06:34:56,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 06:34:56,954 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 28.0) internal successors, (140), 3 states have internal predecessors, (140), 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 150 [2023-11-29 06:34:56,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:34:56,958 INFO L225 Difference]: With dead ends: 752 [2023-11-29 06:34:56,958 INFO L226 Difference]: Without dead ends: 443 [2023-11-29 06:34:56,960 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-29 06:34:56,961 INFO L413 NwaCegarLoop]: 277 mSDtfsCounter, 895 mSDsluCounter, 302 mSDsCounter, 0 mSdLazyCounter, 977 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 918 SdHoareTripleChecker+Valid, 579 SdHoareTripleChecker+Invalid, 1031 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 977 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-11-29 06:34:56,962 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [918 Valid, 579 Invalid, 1031 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 977 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-11-29 06:34:56,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 443 states. [2023-11-29 06:34:56,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 443 to 323. [2023-11-29 06:34:56,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 323 states, 291 states have (on average 1.6254295532646048) internal successors, (473), 292 states have internal predecessors, (473), 25 states have call successors, (25), 6 states have call predecessors, (25), 6 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2023-11-29 06:34:56,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 523 transitions. [2023-11-29 06:34:56,996 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 523 transitions. Word has length 150 [2023-11-29 06:34:56,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:34:56,997 INFO L495 AbstractCegarLoop]: Abstraction has 323 states and 523 transitions. [2023-11-29 06:34:56,997 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 28.0) internal successors, (140), 3 states have internal predecessors, (140), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 06:34:56,997 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 523 transitions. [2023-11-29 06:34:57,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2023-11-29 06:34:57,000 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:34:57,001 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:34:57,001 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-29 06:34:57,001 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:34:57,002 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:34:57,002 INFO L85 PathProgramCache]: Analyzing trace with hash 1445255946, now seen corresponding path program 1 times [2023-11-29 06:34:57,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:34:57,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [780954049] [2023-11-29 06:34:57,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:34:57,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:34:57,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:34:57,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 06:34:57,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:34:57,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-29 06:34:57,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:34:57,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-29 06:34:57,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:34:57,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-11-29 06:34:57,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:34:57,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2023-11-29 06:34:57,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:34:57,364 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:34:57,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:34:57,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [780954049] [2023-11-29 06:34:57,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [780954049] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:34:57,365 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:34:57,366 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 06:34:57,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083290078] [2023-11-29 06:34:57,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:34:57,367 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 06:34:57,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:34:57,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 06:34:57,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-29 06:34:57,368 INFO L87 Difference]: Start difference. First operand 323 states and 523 transitions. Second operand has 6 states, 6 states have (on average 23.333333333333332) internal successors, (140), 4 states have internal predecessors, (140), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 06:35:00,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:35:00,541 INFO L93 Difference]: Finished difference Result 1192 states and 1975 transitions. [2023-11-29 06:35:00,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 06:35:00,542 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 23.333333333333332) internal successors, (140), 4 states have internal predecessors, (140), 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 150 [2023-11-29 06:35:00,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:35:00,547 INFO L225 Difference]: With dead ends: 1192 [2023-11-29 06:35:00,547 INFO L226 Difference]: Without dead ends: 886 [2023-11-29 06:35:00,549 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2023-11-29 06:35:00,549 INFO L413 NwaCegarLoop]: 294 mSDtfsCounter, 1367 mSDsluCounter, 826 mSDsCounter, 0 mSdLazyCounter, 2170 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1385 SdHoareTripleChecker+Valid, 1120 SdHoareTripleChecker+Invalid, 2274 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 2170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-11-29 06:35:00,550 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1385 Valid, 1120 Invalid, 2274 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 2170 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-11-29 06:35:00,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 886 states. [2023-11-29 06:35:00,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 886 to 647. [2023-11-29 06:35:00,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 647 states, 588 states have (on average 1.6360544217687074) internal successors, (962), 590 states have internal predecessors, (962), 45 states have call successors, (45), 12 states have call predecessors, (45), 13 states have return successors, (48), 45 states have call predecessors, (48), 45 states have call successors, (48) [2023-11-29 06:35:00,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 647 states to 647 states and 1055 transitions. [2023-11-29 06:35:00,610 INFO L78 Accepts]: Start accepts. Automaton has 647 states and 1055 transitions. Word has length 150 [2023-11-29 06:35:00,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:35:00,610 INFO L495 AbstractCegarLoop]: Abstraction has 647 states and 1055 transitions. [2023-11-29 06:35:00,610 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 23.333333333333332) internal successors, (140), 4 states have internal predecessors, (140), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 06:35:00,610 INFO L276 IsEmpty]: Start isEmpty. Operand 647 states and 1055 transitions. [2023-11-29 06:35:00,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2023-11-29 06:35:00,613 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:35:00,613 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:35:00,613 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-29 06:35:00,613 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:35:00,614 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:35:00,614 INFO L85 PathProgramCache]: Analyzing trace with hash 1324030094, now seen corresponding path program 1 times [2023-11-29 06:35:00,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:35:00,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549194949] [2023-11-29 06:35:00,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:35:00,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:35:00,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:35:00,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 06:35:00,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:35:00,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-29 06:35:00,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:35:00,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-29 06:35:00,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:35:00,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-11-29 06:35:00,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:35:00,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2023-11-29 06:35:00,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:35:00,954 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:35:00,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:35:00,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549194949] [2023-11-29 06:35:00,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1549194949] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:35:00,955 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:35:00,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 06:35:00,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772781577] [2023-11-29 06:35:00,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:35:00,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 06:35:00,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:35:00,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 06:35:00,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 06:35:00,957 INFO L87 Difference]: Start difference. First operand 647 states and 1055 transitions. Second operand has 7 states, 7 states have (on average 20.0) internal successors, (140), 5 states have internal predecessors, (140), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 06:35:05,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:35:05,077 INFO L93 Difference]: Finished difference Result 1977 states and 3277 transitions. [2023-11-29 06:35:05,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-29 06:35:05,078 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.0) internal successors, (140), 5 states have internal predecessors, (140), 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 150 [2023-11-29 06:35:05,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:35:05,087 INFO L225 Difference]: With dead ends: 1977 [2023-11-29 06:35:05,087 INFO L226 Difference]: Without dead ends: 1347 [2023-11-29 06:35:05,090 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-11-29 06:35:05,091 INFO L413 NwaCegarLoop]: 432 mSDtfsCounter, 1398 mSDsluCounter, 1425 mSDsCounter, 0 mSdLazyCounter, 3455 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1416 SdHoareTripleChecker+Valid, 1857 SdHoareTripleChecker+Invalid, 3514 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 3455 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2023-11-29 06:35:05,092 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1416 Valid, 1857 Invalid, 3514 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 3455 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2023-11-29 06:35:05,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1347 states. [2023-11-29 06:35:05,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1347 to 946. [2023-11-29 06:35:05,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 946 states, 860 states have (on average 1.6290697674418604) internal successors, (1401), 863 states have internal predecessors, (1401), 65 states have call successors, (65), 18 states have call predecessors, (65), 20 states have return successors, (70), 66 states have call predecessors, (70), 65 states have call successors, (70) [2023-11-29 06:35:05,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 946 states to 946 states and 1536 transitions. [2023-11-29 06:35:05,164 INFO L78 Accepts]: Start accepts. Automaton has 946 states and 1536 transitions. Word has length 150 [2023-11-29 06:35:05,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:35:05,164 INFO L495 AbstractCegarLoop]: Abstraction has 946 states and 1536 transitions. [2023-11-29 06:35:05,164 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.0) internal successors, (140), 5 states have internal predecessors, (140), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 06:35:05,165 INFO L276 IsEmpty]: Start isEmpty. Operand 946 states and 1536 transitions. [2023-11-29 06:35:05,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2023-11-29 06:35:05,167 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:35:05,167 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:35:05,167 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-29 06:35:05,167 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:35:05,168 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:35:05,168 INFO L85 PathProgramCache]: Analyzing trace with hash 1999190220, now seen corresponding path program 1 times [2023-11-29 06:35:05,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:35:05,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65377562] [2023-11-29 06:35:05,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:35:05,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:35:05,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:35:05,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 06:35:05,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:35:05,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-29 06:35:05,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:35:05,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-29 06:35:05,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:35:05,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-11-29 06:35:05,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:35:05,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2023-11-29 06:35:05,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:35:05,524 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:35:05,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:35:05,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65377562] [2023-11-29 06:35:05,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [65377562] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:35:05,525 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:35:05,525 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 06:35:05,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394629828] [2023-11-29 06:35:05,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:35:05,525 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 06:35:05,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:35:05,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 06:35:05,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 06:35:05,527 INFO L87 Difference]: Start difference. First operand 946 states and 1536 transitions. Second operand has 7 states, 7 states have (on average 20.0) internal successors, (140), 5 states have internal predecessors, (140), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 06:35:09,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:35:09,561 INFO L93 Difference]: Finished difference Result 3127 states and 5172 transitions. [2023-11-29 06:35:09,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-29 06:35:09,561 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.0) internal successors, (140), 5 states have internal predecessors, (140), 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 150 [2023-11-29 06:35:09,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:35:09,573 INFO L225 Difference]: With dead ends: 3127 [2023-11-29 06:35:09,573 INFO L226 Difference]: Without dead ends: 2198 [2023-11-29 06:35:09,576 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-11-29 06:35:09,577 INFO L413 NwaCegarLoop]: 430 mSDtfsCounter, 1396 mSDsluCounter, 1425 mSDsCounter, 0 mSdLazyCounter, 3451 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1414 SdHoareTripleChecker+Valid, 1855 SdHoareTripleChecker+Invalid, 3512 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 3451 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2023-11-29 06:35:09,578 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1414 Valid, 1855 Invalid, 3512 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 3451 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2023-11-29 06:35:09,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2198 states. [2023-11-29 06:35:09,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2198 to 1545. [2023-11-29 06:35:09,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1545 states, 1405 states have (on average 1.6227758007117439) internal successors, (2280), 1410 states have internal predecessors, (2280), 105 states have call successors, (105), 30 states have call predecessors, (105), 34 states have return successors, (118), 108 states have call predecessors, (118), 105 states have call successors, (118) [2023-11-29 06:35:09,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1545 states to 1545 states and 2503 transitions. [2023-11-29 06:35:09,673 INFO L78 Accepts]: Start accepts. Automaton has 1545 states and 2503 transitions. Word has length 150 [2023-11-29 06:35:09,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:35:09,674 INFO L495 AbstractCegarLoop]: Abstraction has 1545 states and 2503 transitions. [2023-11-29 06:35:09,674 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.0) internal successors, (140), 5 states have internal predecessors, (140), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 06:35:09,674 INFO L276 IsEmpty]: Start isEmpty. Operand 1545 states and 2503 transitions. [2023-11-29 06:35:09,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2023-11-29 06:35:09,676 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:35:09,676 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:35:09,676 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-29 06:35:09,676 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:35:09,677 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:35:09,677 INFO L85 PathProgramCache]: Analyzing trace with hash 1051138254, now seen corresponding path program 1 times [2023-11-29 06:35:09,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:35:09,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2072906190] [2023-11-29 06:35:09,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:35:09,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:35:09,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:35:09,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 06:35:09,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:35:09,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-29 06:35:09,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:35:09,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-29 06:35:09,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:35:09,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-11-29 06:35:09,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:35:09,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2023-11-29 06:35:09,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:35:09,950 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:35:09,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:35:09,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2072906190] [2023-11-29 06:35:09,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2072906190] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:35:09,951 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:35:09,951 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 06:35:09,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522408663] [2023-11-29 06:35:09,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:35:09,952 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 06:35:09,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:35:09,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 06:35:09,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-29 06:35:09,953 INFO L87 Difference]: Start difference. First operand 1545 states and 2503 transitions. Second operand has 7 states, 7 states have (on average 20.0) internal successors, (140), 5 states have internal predecessors, (140), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 06:35:11,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:35:11,933 INFO L93 Difference]: Finished difference Result 3716 states and 6132 transitions. [2023-11-29 06:35:11,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 06:35:11,933 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.0) internal successors, (140), 5 states have internal predecessors, (140), 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 150 [2023-11-29 06:35:11,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:35:11,943 INFO L225 Difference]: With dead ends: 3716 [2023-11-29 06:35:11,943 INFO L226 Difference]: Without dead ends: 2188 [2023-11-29 06:35:11,947 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-11-29 06:35:11,948 INFO L413 NwaCegarLoop]: 234 mSDtfsCounter, 999 mSDsluCounter, 719 mSDsCounter, 0 mSdLazyCounter, 1763 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1018 SdHoareTripleChecker+Valid, 953 SdHoareTripleChecker+Invalid, 1826 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 1763 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-11-29 06:35:11,949 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1018 Valid, 953 Invalid, 1826 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 1763 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-11-29 06:35:11,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2188 states. [2023-11-29 06:35:12,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2188 to 1545. [2023-11-29 06:35:12,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1545 states, 1405 states have (on average 1.6192170818505338) internal successors, (2275), 1410 states have internal predecessors, (2275), 105 states have call successors, (105), 30 states have call predecessors, (105), 34 states have return successors, (118), 108 states have call predecessors, (118), 105 states have call successors, (118) [2023-11-29 06:35:12,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1545 states to 1545 states and 2498 transitions. [2023-11-29 06:35:12,065 INFO L78 Accepts]: Start accepts. Automaton has 1545 states and 2498 transitions. Word has length 150 [2023-11-29 06:35:12,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:35:12,066 INFO L495 AbstractCegarLoop]: Abstraction has 1545 states and 2498 transitions. [2023-11-29 06:35:12,066 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.0) internal successors, (140), 5 states have internal predecessors, (140), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 06:35:12,066 INFO L276 IsEmpty]: Start isEmpty. Operand 1545 states and 2498 transitions. [2023-11-29 06:35:12,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2023-11-29 06:35:12,068 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:35:12,068 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:35:12,068 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-29 06:35:12,068 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:35:12,069 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:35:12,069 INFO L85 PathProgramCache]: Analyzing trace with hash 466366604, now seen corresponding path program 1 times [2023-11-29 06:35:12,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:35:12,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [887672950] [2023-11-29 06:35:12,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:35:12,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:35:12,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:35:12,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 06:35:12,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:35:12,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-29 06:35:12,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:35:12,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-29 06:35:12,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:35:12,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-11-29 06:35:12,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:35:12,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2023-11-29 06:35:12,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:35:12,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:35:12,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:35:12,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [887672950] [2023-11-29 06:35:12,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [887672950] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:35:12,317 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:35:12,317 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 06:35:12,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907175709] [2023-11-29 06:35:12,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:35:12,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 06:35:12,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:35:12,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 06:35:12,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-29 06:35:12,319 INFO L87 Difference]: Start difference. First operand 1545 states and 2498 transitions. Second operand has 7 states, 7 states have (on average 20.0) internal successors, (140), 5 states have internal predecessors, (140), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 06:35:14,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:35:14,031 INFO L93 Difference]: Finished difference Result 3710 states and 6106 transitions. [2023-11-29 06:35:14,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 06:35:14,032 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.0) internal successors, (140), 5 states have internal predecessors, (140), 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 150 [2023-11-29 06:35:14,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:35:14,042 INFO L225 Difference]: With dead ends: 3710 [2023-11-29 06:35:14,042 INFO L226 Difference]: Without dead ends: 2182 [2023-11-29 06:35:14,045 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-11-29 06:35:14,047 INFO L413 NwaCegarLoop]: 234 mSDtfsCounter, 1138 mSDsluCounter, 568 mSDsCounter, 0 mSdLazyCounter, 1576 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1157 SdHoareTripleChecker+Valid, 802 SdHoareTripleChecker+Invalid, 1664 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 1576 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-11-29 06:35:14,047 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1157 Valid, 802 Invalid, 1664 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 1576 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-11-29 06:35:14,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2182 states. [2023-11-29 06:35:14,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2182 to 1545. [2023-11-29 06:35:14,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1545 states, 1405 states have (on average 1.6156583629893237) internal successors, (2270), 1410 states have internal predecessors, (2270), 105 states have call successors, (105), 30 states have call predecessors, (105), 34 states have return successors, (118), 108 states have call predecessors, (118), 105 states have call successors, (118) [2023-11-29 06:35:14,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1545 states to 1545 states and 2493 transitions. [2023-11-29 06:35:14,124 INFO L78 Accepts]: Start accepts. Automaton has 1545 states and 2493 transitions. Word has length 150 [2023-11-29 06:35:14,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:35:14,124 INFO L495 AbstractCegarLoop]: Abstraction has 1545 states and 2493 transitions. [2023-11-29 06:35:14,124 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.0) internal successors, (140), 5 states have internal predecessors, (140), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 06:35:14,125 INFO L276 IsEmpty]: Start isEmpty. Operand 1545 states and 2493 transitions. [2023-11-29 06:35:14,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2023-11-29 06:35:14,127 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:35:14,128 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:35:14,128 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-29 06:35:14,128 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:35:14,129 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:35:14,129 INFO L85 PathProgramCache]: Analyzing trace with hash 31861006, now seen corresponding path program 1 times [2023-11-29 06:35:14,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:35:14,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832070717] [2023-11-29 06:35:14,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:35:14,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:35:14,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:35:14,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 06:35:14,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:35:14,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-29 06:35:14,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:35:14,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-29 06:35:14,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:35:14,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-11-29 06:35:14,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:35:14,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2023-11-29 06:35:14,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:35:14,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:35:14,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:35:14,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [832070717] [2023-11-29 06:35:14,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [832070717] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:35:14,379 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:35:14,379 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 06:35:14,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916493368] [2023-11-29 06:35:14,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:35:14,380 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 06:35:14,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:35:14,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 06:35:14,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-29 06:35:14,381 INFO L87 Difference]: Start difference. First operand 1545 states and 2493 transitions. Second operand has 7 states, 7 states have (on average 20.0) internal successors, (140), 5 states have internal predecessors, (140), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 06:35:16,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:35:16,515 INFO L93 Difference]: Finished difference Result 3703 states and 6078 transitions. [2023-11-29 06:35:16,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 06:35:16,516 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.0) internal successors, (140), 5 states have internal predecessors, (140), 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 150 [2023-11-29 06:35:16,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:35:16,526 INFO L225 Difference]: With dead ends: 3703 [2023-11-29 06:35:16,526 INFO L226 Difference]: Without dead ends: 2175 [2023-11-29 06:35:16,529 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-11-29 06:35:16,530 INFO L413 NwaCegarLoop]: 234 mSDtfsCounter, 1000 mSDsluCounter, 719 mSDsCounter, 0 mSdLazyCounter, 1726 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1019 SdHoareTripleChecker+Valid, 953 SdHoareTripleChecker+Invalid, 1789 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 1726 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-11-29 06:35:16,531 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1019 Valid, 953 Invalid, 1789 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 1726 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-11-29 06:35:16,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2175 states. [2023-11-29 06:35:16,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2175 to 1545. [2023-11-29 06:35:16,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1545 states, 1405 states have (on average 1.612099644128114) internal successors, (2265), 1410 states have internal predecessors, (2265), 105 states have call successors, (105), 30 states have call predecessors, (105), 34 states have return successors, (118), 108 states have call predecessors, (118), 105 states have call successors, (118) [2023-11-29 06:35:16,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1545 states to 1545 states and 2488 transitions. [2023-11-29 06:35:16,605 INFO L78 Accepts]: Start accepts. Automaton has 1545 states and 2488 transitions. Word has length 150 [2023-11-29 06:35:16,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:35:16,605 INFO L495 AbstractCegarLoop]: Abstraction has 1545 states and 2488 transitions. [2023-11-29 06:35:16,605 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.0) internal successors, (140), 5 states have internal predecessors, (140), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 06:35:16,605 INFO L276 IsEmpty]: Start isEmpty. Operand 1545 states and 2488 transitions. [2023-11-29 06:35:16,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2023-11-29 06:35:16,607 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:35:16,607 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:35:16,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-29 06:35:16,607 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:35:16,607 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:35:16,608 INFO L85 PathProgramCache]: Analyzing trace with hash -397797300, now seen corresponding path program 1 times [2023-11-29 06:35:16,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:35:16,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [200035454] [2023-11-29 06:35:16,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:35:16,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:35:16,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:35:16,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 06:35:16,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:35:16,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-29 06:35:16,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:35:16,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-29 06:35:16,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:35:16,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-11-29 06:35:16,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:35:16,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2023-11-29 06:35:16,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:35:16,838 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:35:16,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:35:16,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [200035454] [2023-11-29 06:35:16,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [200035454] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:35:16,838 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:35:16,838 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 06:35:16,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589372292] [2023-11-29 06:35:16,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:35:16,839 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 06:35:16,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:35:16,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 06:35:16,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-29 06:35:16,840 INFO L87 Difference]: Start difference. First operand 1545 states and 2488 transitions. Second operand has 7 states, 7 states have (on average 20.0) internal successors, (140), 5 states have internal predecessors, (140), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 06:35:18,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:35:18,465 INFO L93 Difference]: Finished difference Result 3691 states and 6040 transitions. [2023-11-29 06:35:18,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 06:35:18,465 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.0) internal successors, (140), 5 states have internal predecessors, (140), 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 150 [2023-11-29 06:35:18,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:35:18,474 INFO L225 Difference]: With dead ends: 3691 [2023-11-29 06:35:18,474 INFO L226 Difference]: Without dead ends: 2163 [2023-11-29 06:35:18,477 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-11-29 06:35:18,478 INFO L413 NwaCegarLoop]: 234 mSDtfsCounter, 1138 mSDsluCounter, 568 mSDsCounter, 0 mSdLazyCounter, 1537 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1157 SdHoareTripleChecker+Valid, 802 SdHoareTripleChecker+Invalid, 1625 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 1537 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-11-29 06:35:18,478 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1157 Valid, 802 Invalid, 1625 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 1537 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-11-29 06:35:18,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2163 states. [2023-11-29 06:35:18,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2163 to 1545. [2023-11-29 06:35:18,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1545 states, 1405 states have (on average 1.6085409252669038) internal successors, (2260), 1410 states have internal predecessors, (2260), 105 states have call successors, (105), 30 states have call predecessors, (105), 34 states have return successors, (118), 108 states have call predecessors, (118), 105 states have call successors, (118) [2023-11-29 06:35:18,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1545 states to 1545 states and 2483 transitions. [2023-11-29 06:35:18,587 INFO L78 Accepts]: Start accepts. Automaton has 1545 states and 2483 transitions. Word has length 150 [2023-11-29 06:35:18,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:35:18,587 INFO L495 AbstractCegarLoop]: Abstraction has 1545 states and 2483 transitions. [2023-11-29 06:35:18,587 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.0) internal successors, (140), 5 states have internal predecessors, (140), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 06:35:18,587 INFO L276 IsEmpty]: Start isEmpty. Operand 1545 states and 2483 transitions. [2023-11-29 06:35:18,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2023-11-29 06:35:18,590 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:35:18,590 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:35:18,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-29 06:35:18,590 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:35:18,591 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:35:18,591 INFO L85 PathProgramCache]: Analyzing trace with hash 549240586, now seen corresponding path program 1 times [2023-11-29 06:35:18,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:35:18,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058622414] [2023-11-29 06:35:18,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:35:18,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:35:18,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:35:18,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 06:35:18,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:35:18,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-29 06:35:18,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:35:18,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-29 06:35:18,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:35:18,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-11-29 06:35:18,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:35:18,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2023-11-29 06:35:18,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:35:18,890 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:35:18,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:35:18,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2058622414] [2023-11-29 06:35:18,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2058622414] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:35:18,891 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:35:18,891 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 06:35:18,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834624946] [2023-11-29 06:35:18,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:35:18,892 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 06:35:18,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:35:18,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 06:35:18,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 06:35:18,893 INFO L87 Difference]: Start difference. First operand 1545 states and 2483 transitions. Second operand has 7 states, 7 states have (on average 20.0) internal successors, (140), 5 states have internal predecessors, (140), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 06:35:22,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:35:22,692 INFO L93 Difference]: Finished difference Result 5297 states and 8629 transitions. [2023-11-29 06:35:22,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-29 06:35:22,693 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.0) internal successors, (140), 5 states have internal predecessors, (140), 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 150 [2023-11-29 06:35:22,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:35:22,707 INFO L225 Difference]: With dead ends: 5297 [2023-11-29 06:35:22,708 INFO L226 Difference]: Without dead ends: 3769 [2023-11-29 06:35:22,711 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-11-29 06:35:22,711 INFO L413 NwaCegarLoop]: 430 mSDtfsCounter, 1367 mSDsluCounter, 1425 mSDsCounter, 0 mSdLazyCounter, 3321 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1385 SdHoareTripleChecker+Valid, 1855 SdHoareTripleChecker+Invalid, 3382 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 3321 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-11-29 06:35:22,712 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1385 Valid, 1855 Invalid, 3382 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 3321 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-11-29 06:35:22,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3769 states. [2023-11-29 06:35:22,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3769 to 2766. [2023-11-29 06:35:22,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2766 states, 2518 states have (on average 1.601667990468626) internal successors, (4033), 2527 states have internal predecessors, (4033), 185 states have call successors, (185), 54 states have call predecessors, (185), 62 states have return successors, (220), 192 states have call predecessors, (220), 185 states have call successors, (220) [2023-11-29 06:35:22,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2766 states to 2766 states and 4438 transitions. [2023-11-29 06:35:22,834 INFO L78 Accepts]: Start accepts. Automaton has 2766 states and 4438 transitions. Word has length 150 [2023-11-29 06:35:22,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:35:22,834 INFO L495 AbstractCegarLoop]: Abstraction has 2766 states and 4438 transitions. [2023-11-29 06:35:22,835 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.0) internal successors, (140), 5 states have internal predecessors, (140), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 06:35:22,835 INFO L276 IsEmpty]: Start isEmpty. Operand 2766 states and 4438 transitions. [2023-11-29 06:35:22,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2023-11-29 06:35:22,837 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:35:22,837 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:35:22,837 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-29 06:35:22,838 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:35:22,838 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:35:22,838 INFO L85 PathProgramCache]: Analyzing trace with hash 1411074188, now seen corresponding path program 1 times [2023-11-29 06:35:22,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:35:22,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1081788819] [2023-11-29 06:35:22,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:35:22,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:35:22,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:35:22,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 06:35:22,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:35:22,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-29 06:35:22,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:35:23,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-29 06:35:23,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:35:23,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-11-29 06:35:23,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:35:23,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2023-11-29 06:35:23,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:35:23,078 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:35:23,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:35:23,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1081788819] [2023-11-29 06:35:23,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1081788819] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:35:23,078 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:35:23,078 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 06:35:23,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854509856] [2023-11-29 06:35:23,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:35:23,079 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 06:35:23,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:35:23,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 06:35:23,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 06:35:23,080 INFO L87 Difference]: Start difference. First operand 2766 states and 4438 transitions. Second operand has 7 states, 7 states have (on average 20.0) internal successors, (140), 5 states have internal predecessors, (140), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 06:35:27,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:35:27,027 INFO L93 Difference]: Finished difference Result 9702 states and 15780 transitions. [2023-11-29 06:35:27,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-29 06:35:27,028 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.0) internal successors, (140), 5 states have internal predecessors, (140), 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 150 [2023-11-29 06:35:27,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:35:27,059 INFO L225 Difference]: With dead ends: 9702 [2023-11-29 06:35:27,060 INFO L226 Difference]: Without dead ends: 6953 [2023-11-29 06:35:27,068 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-11-29 06:35:27,068 INFO L413 NwaCegarLoop]: 430 mSDtfsCounter, 1366 mSDsluCounter, 1425 mSDsCounter, 0 mSdLazyCounter, 3308 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1384 SdHoareTripleChecker+Valid, 1855 SdHoareTripleChecker+Invalid, 3369 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 3308 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-11-29 06:35:27,069 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1384 Valid, 1855 Invalid, 3369 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 3308 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-11-29 06:35:27,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6953 states. [2023-11-29 06:35:27,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6953 to 5205. [2023-11-29 06:35:27,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5205 states, 4741 states have (on average 1.5964986289812275) internal successors, (7569), 4758 states have internal predecessors, (7569), 345 states have call successors, (345), 102 states have call predecessors, (345), 118 states have return successors, (442), 360 states have call predecessors, (442), 345 states have call successors, (442) [2023-11-29 06:35:27,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5205 states to 5205 states and 8356 transitions. [2023-11-29 06:35:27,447 INFO L78 Accepts]: Start accepts. Automaton has 5205 states and 8356 transitions. Word has length 150 [2023-11-29 06:35:27,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:35:27,448 INFO L495 AbstractCegarLoop]: Abstraction has 5205 states and 8356 transitions. [2023-11-29 06:35:27,448 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.0) internal successors, (140), 5 states have internal predecessors, (140), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 06:35:27,448 INFO L276 IsEmpty]: Start isEmpty. Operand 5205 states and 8356 transitions. [2023-11-29 06:35:27,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2023-11-29 06:35:27,453 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:35:27,453 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:35:27,454 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-29 06:35:27,454 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:35:27,454 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:35:27,454 INFO L85 PathProgramCache]: Analyzing trace with hash -639334710, now seen corresponding path program 1 times [2023-11-29 06:35:27,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:35:27,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [969282015] [2023-11-29 06:35:27,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:35:27,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:35:27,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:35:27,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 06:35:27,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:35:27,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-29 06:35:27,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:35:27,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-29 06:35:27,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:35:27,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-11-29 06:35:27,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:35:27,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2023-11-29 06:35:27,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:35:27,729 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:35:27,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:35:27,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [969282015] [2023-11-29 06:35:27,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [969282015] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:35:27,729 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:35:27,729 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 06:35:27,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950724236] [2023-11-29 06:35:27,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:35:27,730 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 06:35:27,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:35:27,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 06:35:27,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 06:35:27,731 INFO L87 Difference]: Start difference. First operand 5205 states and 8356 transitions. Second operand has 7 states, 7 states have (on average 20.0) internal successors, (140), 5 states have internal predecessors, (140), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 06:35:31,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:35:31,713 INFO L93 Difference]: Finished difference Result 18503 states and 30124 transitions. [2023-11-29 06:35:31,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-29 06:35:31,714 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.0) internal successors, (140), 5 states have internal predecessors, (140), 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 150 [2023-11-29 06:35:31,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:35:31,757 INFO L225 Difference]: With dead ends: 18503 [2023-11-29 06:35:31,757 INFO L226 Difference]: Without dead ends: 13315 [2023-11-29 06:35:31,768 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-11-29 06:35:31,769 INFO L413 NwaCegarLoop]: 430 mSDtfsCounter, 1365 mSDsluCounter, 1425 mSDsCounter, 0 mSdLazyCounter, 3295 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1383 SdHoareTripleChecker+Valid, 1855 SdHoareTripleChecker+Invalid, 3356 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 3295 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-11-29 06:35:31,769 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1383 Valid, 1855 Invalid, 3356 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 3295 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-11-29 06:35:31,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13315 states. [2023-11-29 06:35:32,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13315 to 10098. [2023-11-29 06:35:32,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10098 states, 9202 states have (on average 1.5934579439252337) internal successors, (14663), 9235 states have internal predecessors, (14663), 665 states have call successors, (665), 198 states have call predecessors, (665), 230 states have return successors, (940), 696 states have call predecessors, (940), 665 states have call successors, (940) [2023-11-29 06:35:32,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10098 states to 10098 states and 16268 transitions. [2023-11-29 06:35:32,347 INFO L78 Accepts]: Start accepts. Automaton has 10098 states and 16268 transitions. Word has length 150 [2023-11-29 06:35:32,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:35:32,347 INFO L495 AbstractCegarLoop]: Abstraction has 10098 states and 16268 transitions. [2023-11-29 06:35:32,348 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.0) internal successors, (140), 5 states have internal predecessors, (140), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 06:35:32,348 INFO L276 IsEmpty]: Start isEmpty. Operand 10098 states and 16268 transitions. [2023-11-29 06:35:32,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2023-11-29 06:35:32,357 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:35:32,357 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:35:32,357 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-29 06:35:32,358 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:35:32,358 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:35:32,358 INFO L85 PathProgramCache]: Analyzing trace with hash -151287604, now seen corresponding path program 1 times [2023-11-29 06:35:32,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:35:32,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2128657041] [2023-11-29 06:35:32,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:35:32,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:35:32,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:35:32,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 06:35:32,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:35:32,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-29 06:35:32,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:35:32,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-29 06:35:32,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:35:32,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-11-29 06:35:32,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:35:32,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2023-11-29 06:35:32,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:35:32,676 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:35:32,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:35:32,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2128657041] [2023-11-29 06:35:32,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2128657041] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:35:32,676 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:35:32,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 06:35:32,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386624358] [2023-11-29 06:35:32,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:35:32,677 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 06:35:32,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:35:32,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 06:35:32,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-29 06:35:32,679 INFO L87 Difference]: Start difference. First operand 10098 states and 16268 transitions. Second operand has 7 states, 7 states have (on average 20.0) internal successors, (140), 5 states have internal predecessors, (140), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 06:35:34,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:35:34,919 INFO L93 Difference]: Finished difference Result 23561 states and 38573 transitions. [2023-11-29 06:35:34,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 06:35:34,920 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.0) internal successors, (140), 5 states have internal predecessors, (140), 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 150 [2023-11-29 06:35:34,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:35:34,958 INFO L225 Difference]: With dead ends: 23561 [2023-11-29 06:35:34,958 INFO L226 Difference]: Without dead ends: 13480 [2023-11-29 06:35:34,985 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-11-29 06:35:34,985 INFO L413 NwaCegarLoop]: 234 mSDtfsCounter, 998 mSDsluCounter, 719 mSDsCounter, 0 mSdLazyCounter, 1656 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1017 SdHoareTripleChecker+Valid, 953 SdHoareTripleChecker+Invalid, 1719 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 1656 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-11-29 06:35:34,986 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1017 Valid, 953 Invalid, 1719 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 1656 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-11-29 06:35:34,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13480 states. [2023-11-29 06:35:35,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13480 to 10098. [2023-11-29 06:35:35,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10098 states, 9202 states have (on average 1.5898717670071723) internal successors, (14630), 9235 states have internal predecessors, (14630), 665 states have call successors, (665), 198 states have call predecessors, (665), 230 states have return successors, (940), 696 states have call predecessors, (940), 665 states have call successors, (940) [2023-11-29 06:35:35,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10098 states to 10098 states and 16235 transitions. [2023-11-29 06:35:35,537 INFO L78 Accepts]: Start accepts. Automaton has 10098 states and 16235 transitions. Word has length 150 [2023-11-29 06:35:35,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:35:35,537 INFO L495 AbstractCegarLoop]: Abstraction has 10098 states and 16235 transitions. [2023-11-29 06:35:35,538 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.0) internal successors, (140), 5 states have internal predecessors, (140), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 06:35:35,538 INFO L276 IsEmpty]: Start isEmpty. Operand 10098 states and 16235 transitions. [2023-11-29 06:35:35,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2023-11-29 06:35:35,544 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:35:35,544 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:35:35,544 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-29 06:35:35,544 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:35:35,544 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:35:35,545 INFO L85 PathProgramCache]: Analyzing trace with hash -1243922806, now seen corresponding path program 1 times [2023-11-29 06:35:35,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:35:35,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811564817] [2023-11-29 06:35:35,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:35:35,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:35:35,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:35:35,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 06:35:35,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:35:35,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-29 06:35:35,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:35:35,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-29 06:35:35,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:35:35,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-11-29 06:35:35,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:35:35,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2023-11-29 06:35:35,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:35:35,774 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:35:35,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:35:35,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1811564817] [2023-11-29 06:35:35,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1811564817] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:35:35,774 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:35:35,775 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 06:35:35,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757950252] [2023-11-29 06:35:35,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:35:35,775 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 06:35:35,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:35:35,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 06:35:35,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 06:35:35,776 INFO L87 Difference]: Start difference. First operand 10098 states and 16235 transitions. Second operand has 7 states, 7 states have (on average 20.0) internal successors, (140), 5 states have internal predecessors, (140), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 06:35:40,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:35:40,445 INFO L93 Difference]: Finished difference Result 40552 states and 66040 transitions. [2023-11-29 06:35:40,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-29 06:35:40,446 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.0) internal successors, (140), 5 states have internal predecessors, (140), 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 150 [2023-11-29 06:35:40,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:35:40,532 INFO L225 Difference]: With dead ends: 40552 [2023-11-29 06:35:40,532 INFO L226 Difference]: Without dead ends: 30471 [2023-11-29 06:35:40,555 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-11-29 06:35:40,556 INFO L413 NwaCegarLoop]: 428 mSDtfsCounter, 1756 mSDsluCounter, 1420 mSDsCounter, 0 mSdLazyCounter, 3247 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1786 SdHoareTripleChecker+Valid, 1848 SdHoareTripleChecker+Invalid, 3311 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 3247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2023-11-29 06:35:40,556 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1786 Valid, 1848 Invalid, 3311 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 3247 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2023-11-29 06:35:40,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30471 states. [2023-11-29 06:35:41,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30471 to 19884. [2023-11-29 06:35:41,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19884 states, 18156 states have (on average 1.5881251376955277) internal successors, (28834), 18221 states have internal predecessors, (28834), 1273 states have call successors, (1273), 390 states have call predecessors, (1273), 454 states have return successors, (2066), 1336 states have call predecessors, (2066), 1273 states have call successors, (2066) [2023-11-29 06:35:41,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19884 states to 19884 states and 32173 transitions. [2023-11-29 06:35:41,835 INFO L78 Accepts]: Start accepts. Automaton has 19884 states and 32173 transitions. Word has length 150 [2023-11-29 06:35:41,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:35:41,835 INFO L495 AbstractCegarLoop]: Abstraction has 19884 states and 32173 transitions. [2023-11-29 06:35:41,835 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.0) internal successors, (140), 5 states have internal predecessors, (140), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 06:35:41,836 INFO L276 IsEmpty]: Start isEmpty. Operand 19884 states and 32173 transitions. [2023-11-29 06:35:41,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2023-11-29 06:35:41,845 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:35:41,845 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:35:41,845 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-29 06:35:41,845 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:35:41,846 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:35:41,846 INFO L85 PathProgramCache]: Analyzing trace with hash 1768872204, now seen corresponding path program 1 times [2023-11-29 06:35:41,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:35:41,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767592313] [2023-11-29 06:35:41,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:35:41,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:35:41,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:35:41,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 06:35:41,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:35:41,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-29 06:35:41,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:35:42,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-29 06:35:42,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:35:42,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-11-29 06:35:42,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:35:42,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2023-11-29 06:35:42,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:35:42,077 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:35:42,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:35:42,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [767592313] [2023-11-29 06:35:42,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [767592313] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:35:42,078 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:35:42,078 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 06:35:42,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45085746] [2023-11-29 06:35:42,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:35:42,079 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 06:35:42,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:35:42,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 06:35:42,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 06:35:42,080 INFO L87 Difference]: Start difference. First operand 19884 states and 32173 transitions. Second operand has 7 states, 7 states have (on average 20.0) internal successors, (140), 5 states have internal predecessors, (140), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 06:35:48,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:35:48,239 INFO L93 Difference]: Finished difference Result 79344 states and 130040 transitions. [2023-11-29 06:35:48,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-29 06:35:48,240 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.0) internal successors, (140), 5 states have internal predecessors, (140), 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 150 [2023-11-29 06:35:48,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:35:48,368 INFO L225 Difference]: With dead ends: 79344 [2023-11-29 06:35:48,368 INFO L226 Difference]: Without dead ends: 59477 [2023-11-29 06:35:48,405 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-11-29 06:35:48,406 INFO L413 NwaCegarLoop]: 427 mSDtfsCounter, 1453 mSDsluCounter, 1417 mSDsCounter, 0 mSdLazyCounter, 3849 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1470 SdHoareTripleChecker+Valid, 1844 SdHoareTripleChecker+Invalid, 3912 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 3849 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2023-11-29 06:35:48,406 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1470 Valid, 1844 Invalid, 3912 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 3849 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2023-11-29 06:35:48,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59477 states. [2023-11-29 06:35:50,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59477 to 39133. [2023-11-29 06:35:50,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39133 states, 35773 states have (on average 1.587454225253683) internal successors, (56788), 35902 states have internal predecessors, (56788), 2457 states have call successors, (2457), 774 states have call predecessors, (2457), 902 states have return successors, (4772), 2584 states have call predecessors, (4772), 2457 states have call successors, (4772) [2023-11-29 06:35:50,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39133 states to 39133 states and 64017 transitions. [2023-11-29 06:35:50,537 INFO L78 Accepts]: Start accepts. Automaton has 39133 states and 64017 transitions. Word has length 150 [2023-11-29 06:35:50,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:35:50,537 INFO L495 AbstractCegarLoop]: Abstraction has 39133 states and 64017 transitions. [2023-11-29 06:35:50,537 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.0) internal successors, (140), 5 states have internal predecessors, (140), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 06:35:50,537 INFO L276 IsEmpty]: Start isEmpty. Operand 39133 states and 64017 transitions. [2023-11-29 06:35:50,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2023-11-29 06:35:50,555 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:35:50,555 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:35:50,555 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-29 06:35:50,555 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:35:50,555 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:35:50,555 INFO L85 PathProgramCache]: Analyzing trace with hash -73603510, now seen corresponding path program 1 times [2023-11-29 06:35:50,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:35:50,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [899311276] [2023-11-29 06:35:50,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:35:50,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:35:50,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:35:50,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 06:35:50,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:35:50,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-29 06:35:50,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:35:50,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-29 06:35:50,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:35:50,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-11-29 06:35:50,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:35:50,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2023-11-29 06:35:50,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:35:50,817 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:35:50,818 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:35:50,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [899311276] [2023-11-29 06:35:50,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [899311276] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:35:50,818 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:35:50,818 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 06:35:50,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032143799] [2023-11-29 06:35:50,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:35:50,819 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 06:35:50,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:35:50,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 06:35:50,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 06:35:50,820 INFO L87 Difference]: Start difference. First operand 39133 states and 64017 transitions. Second operand has 7 states, 7 states have (on average 20.0) internal successors, (140), 5 states have internal predecessors, (140), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 06:35:58,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:35:58,233 INFO L93 Difference]: Finished difference Result 153405 states and 254218 transitions. [2023-11-29 06:35:58,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-29 06:35:58,234 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.0) internal successors, (140), 5 states have internal predecessors, (140), 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 150 [2023-11-29 06:35:58,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:35:58,487 INFO L225 Difference]: With dead ends: 153405 [2023-11-29 06:35:58,487 INFO L226 Difference]: Without dead ends: 114289 [2023-11-29 06:35:58,559 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-11-29 06:35:58,560 INFO L413 NwaCegarLoop]: 428 mSDtfsCounter, 1651 mSDsluCounter, 1420 mSDsCounter, 0 mSdLazyCounter, 3202 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1681 SdHoareTripleChecker+Valid, 1848 SdHoareTripleChecker+Invalid, 3266 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 3202 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2023-11-29 06:35:58,560 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1681 Valid, 1848 Invalid, 3266 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 3202 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2023-11-29 06:35:58,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114289 states. [2023-11-29 06:36:02,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114289 to 78079. [2023-11-29 06:36:02,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78079 states, 71519 states have (on average 1.5882772410128776) internal successors, (113592), 71776 states have internal predecessors, (113592), 4761 states have call successors, (4761), 1542 states have call predecessors, (4761), 1798 states have return successors, (11578), 5016 states have call predecessors, (11578), 4761 states have call successors, (11578) [2023-11-29 06:36:03,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78079 states to 78079 states and 129931 transitions. [2023-11-29 06:36:03,175 INFO L78 Accepts]: Start accepts. Automaton has 78079 states and 129931 transitions. Word has length 150 [2023-11-29 06:36:03,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:36:03,175 INFO L495 AbstractCegarLoop]: Abstraction has 78079 states and 129931 transitions. [2023-11-29 06:36:03,176 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.0) internal successors, (140), 5 states have internal predecessors, (140), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 06:36:03,176 INFO L276 IsEmpty]: Start isEmpty. Operand 78079 states and 129931 transitions. [2023-11-29 06:36:03,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2023-11-29 06:36:03,223 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:36:03,223 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:36:03,223 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-29 06:36:03,224 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:36:03,224 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:36:03,224 INFO L85 PathProgramCache]: Analyzing trace with hash -406246648, now seen corresponding path program 1 times [2023-11-29 06:36:03,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:36:03,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [540634672] [2023-11-29 06:36:03,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:36:03,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:36:03,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:36:03,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 06:36:03,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:36:03,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-29 06:36:03,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:36:03,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-29 06:36:03,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:36:03,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-11-29 06:36:03,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:36:03,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2023-11-29 06:36:03,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:36:03,500 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:36:03,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:36:03,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [540634672] [2023-11-29 06:36:03,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [540634672] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:36:03,500 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:36:03,500 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 06:36:03,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631496645] [2023-11-29 06:36:03,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:36:03,501 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 06:36:03,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:36:03,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 06:36:03,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 06:36:03,502 INFO L87 Difference]: Start difference. First operand 78079 states and 129931 transitions. Second operand has 7 states, 7 states have (on average 20.0) internal successors, (140), 5 states have internal predecessors, (140), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 06:36:14,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:36:14,521 INFO L93 Difference]: Finished difference Result 302237 states and 509314 transitions. [2023-11-29 06:36:14,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-29 06:36:14,522 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.0) internal successors, (140), 5 states have internal predecessors, (140), 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 150 [2023-11-29 06:36:14,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:36:15,575 INFO L225 Difference]: With dead ends: 302237 [2023-11-29 06:36:15,576 INFO L226 Difference]: Without dead ends: 224175 [2023-11-29 06:36:15,744 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-11-29 06:36:15,745 INFO L413 NwaCegarLoop]: 428 mSDtfsCounter, 1421 mSDsluCounter, 1420 mSDsCounter, 0 mSdLazyCounter, 3672 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1438 SdHoareTripleChecker+Valid, 1848 SdHoareTripleChecker+Invalid, 3735 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 3672 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2023-11-29 06:36:15,745 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1438 Valid, 1848 Invalid, 3735 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 3672 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2023-11-29 06:36:15,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224175 states. [2023-11-29 06:36:23,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224175 to 155968. [2023-11-29 06:36:23,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155968 states, 143136 states have (on average 1.5890481779566286) internal successors, (227450), 143649 states have internal predecessors, (227450), 9241 states have call successors, (9241), 3078 states have call predecessors, (9241), 3590 states have return successors, (29436), 9752 states have call predecessors, (29436), 9241 states have call successors, (29436) [2023-11-29 06:36:24,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155968 states to 155968 states and 266127 transitions. [2023-11-29 06:36:24,716 INFO L78 Accepts]: Start accepts. Automaton has 155968 states and 266127 transitions. Word has length 150 [2023-11-29 06:36:24,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:36:24,717 INFO L495 AbstractCegarLoop]: Abstraction has 155968 states and 266127 transitions. [2023-11-29 06:36:24,717 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.0) internal successors, (140), 5 states have internal predecessors, (140), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 06:36:24,717 INFO L276 IsEmpty]: Start isEmpty. Operand 155968 states and 266127 transitions. [2023-11-29 06:36:24,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2023-11-29 06:36:24,772 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:36:24,772 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:36:24,772 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-29 06:36:24,772 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:36:24,772 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:36:24,773 INFO L85 PathProgramCache]: Analyzing trace with hash 1522685578, now seen corresponding path program 1 times [2023-11-29 06:36:24,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:36:24,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1979804644] [2023-11-29 06:36:24,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:36:24,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:36:24,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:36:24,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 06:36:24,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:36:24,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-29 06:36:24,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:36:24,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-29 06:36:25,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:36:25,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-11-29 06:36:25,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:36:25,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2023-11-29 06:36:25,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:36:25,019 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:36:25,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:36:25,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1979804644] [2023-11-29 06:36:25,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1979804644] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:36:25,020 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:36:25,020 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 06:36:25,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483479472] [2023-11-29 06:36:25,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:36:25,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 06:36:25,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:36:25,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 06:36:25,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-29 06:36:25,022 INFO L87 Difference]: Start difference. First operand 155968 states and 266127 transitions. Second operand has 7 states, 7 states have (on average 20.0) internal successors, (140), 5 states have internal predecessors, (140), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 06:36:34,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:36:34,025 INFO L93 Difference]: Finished difference Result 357305 states and 627242 transitions. [2023-11-29 06:36:34,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 06:36:34,025 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.0) internal successors, (140), 5 states have internal predecessors, (140), 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 150 [2023-11-29 06:36:34,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:36:34,903 INFO L225 Difference]: With dead ends: 357305 [2023-11-29 06:36:34,903 INFO L226 Difference]: Without dead ends: 201354 [2023-11-29 06:36:35,363 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-11-29 06:36:35,364 INFO L413 NwaCegarLoop]: 234 mSDtfsCounter, 1143 mSDsluCounter, 567 mSDsCounter, 0 mSdLazyCounter, 1443 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1162 SdHoareTripleChecker+Valid, 801 SdHoareTripleChecker+Invalid, 1533 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 1443 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-11-29 06:36:35,364 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1162 Valid, 801 Invalid, 1533 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 1443 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-11-29 06:36:35,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201354 states. [2023-11-29 06:36:43,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201354 to 155968. [2023-11-29 06:36:43,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155968 states, 143136 states have (on average 1.5854641739324837) internal successors, (226937), 143649 states have internal predecessors, (226937), 9241 states have call successors, (9241), 3078 states have call predecessors, (9241), 3590 states have return successors, (29436), 9752 states have call predecessors, (29436), 9241 states have call successors, (29436) [2023-11-29 06:36:44,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155968 states to 155968 states and 265614 transitions. [2023-11-29 06:36:44,574 INFO L78 Accepts]: Start accepts. Automaton has 155968 states and 265614 transitions. Word has length 150 [2023-11-29 06:36:44,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:36:44,575 INFO L495 AbstractCegarLoop]: Abstraction has 155968 states and 265614 transitions. [2023-11-29 06:36:44,575 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.0) internal successors, (140), 5 states have internal predecessors, (140), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 06:36:44,575 INFO L276 IsEmpty]: Start isEmpty. Operand 155968 states and 265614 transitions. [2023-11-29 06:36:44,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2023-11-29 06:36:44,622 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:36:44,622 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:36:44,622 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-11-29 06:36:44,622 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:36:44,622 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:36:44,622 INFO L85 PathProgramCache]: Analyzing trace with hash -770395448, now seen corresponding path program 1 times [2023-11-29 06:36:44,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:36:44,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004910918] [2023-11-29 06:36:44,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:36:44,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:36:44,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:36:44,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 06:36:44,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:36:44,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-29 06:36:44,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:36:45,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-29 06:36:45,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:36:45,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-11-29 06:36:45,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:36:45,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2023-11-29 06:36:45,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:36:45,096 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:36:45,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:36:45,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1004910918] [2023-11-29 06:36:45,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1004910918] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:36:45,097 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:36:45,097 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 06:36:45,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622611771] [2023-11-29 06:36:45,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:36:45,098 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 06:36:45,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:36:45,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 06:36:45,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 06:36:45,099 INFO L87 Difference]: Start difference. First operand 155968 states and 265614 transitions. Second operand has 7 states, 7 states have (on average 20.0) internal successors, (140), 5 states have internal predecessors, (140), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 06:37:02,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:37:02,165 INFO L93 Difference]: Finished difference Result 589402 states and 1017536 transitions. [2023-11-29 06:37:02,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-29 06:37:02,166 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.0) internal successors, (140), 5 states have internal predecessors, (140), 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 150 [2023-11-29 06:37:02,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:37:03,883 INFO L225 Difference]: With dead ends: 589402 [2023-11-29 06:37:03,884 INFO L226 Difference]: Without dead ends: 433451 [2023-11-29 06:37:04,539 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-11-29 06:37:04,539 INFO L413 NwaCegarLoop]: 428 mSDtfsCounter, 1395 mSDsluCounter, 1420 mSDsCounter, 0 mSdLazyCounter, 3542 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1412 SdHoareTripleChecker+Valid, 1848 SdHoareTripleChecker+Invalid, 3605 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 3542 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2023-11-29 06:37:04,539 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1412 Valid, 1848 Invalid, 3605 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 3542 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2023-11-29 06:37:04,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 433451 states. [2023-11-29 06:37:21,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 433451 to 312258. [2023-11-29 06:37:21,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 312258 states, 287138 states have (on average 1.5851785552591438) internal successors, (455165), 288163 states have internal predecessors, (455165), 17945 states have call successors, (17945), 6150 states have call predecessors, (17945), 7174 states have return successors, (78018), 18968 states have call predecessors, (78018), 17945 states have call successors, (78018) [2023-11-29 06:37:23,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 312258 states to 312258 states and 551128 transitions. [2023-11-29 06:37:23,234 INFO L78 Accepts]: Start accepts. Automaton has 312258 states and 551128 transitions. Word has length 150 [2023-11-29 06:37:23,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:37:23,234 INFO L495 AbstractCegarLoop]: Abstraction has 312258 states and 551128 transitions. [2023-11-29 06:37:23,234 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.0) internal successors, (140), 5 states have internal predecessors, (140), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 06:37:23,234 INFO L276 IsEmpty]: Start isEmpty. Operand 312258 states and 551128 transitions. [2023-11-29 06:37:23,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2023-11-29 06:37:23,365 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:37:23,365 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:37:23,365 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-11-29 06:37:23,365 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:37:23,366 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:37:23,366 INFO L85 PathProgramCache]: Analyzing trace with hash 956749514, now seen corresponding path program 1 times [2023-11-29 06:37:23,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:37:23,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371093004] [2023-11-29 06:37:23,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:37:23,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:37:23,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:37:23,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 06:37:23,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:37:23,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-29 06:37:23,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:37:23,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-29 06:37:23,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:37:23,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-11-29 06:37:23,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:37:23,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2023-11-29 06:37:23,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:37:23,615 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:37:23,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:37:23,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371093004] [2023-11-29 06:37:23,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1371093004] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:37:23,615 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:37:23,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 06:37:23,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185174971] [2023-11-29 06:37:23,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:37:23,616 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 06:37:23,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:37:23,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 06:37:23,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 06:37:23,617 INFO L87 Difference]: Start difference. First operand 312258 states and 551128 transitions. Second operand has 7 states, 7 states have (on average 20.0) internal successors, (140), 5 states have internal predecessors, (140), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 06:37:54,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:37:54,395 INFO L93 Difference]: Finished difference Result 1163226 states and 2086488 transitions. [2023-11-29 06:37:54,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-29 06:37:54,395 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.0) internal successors, (140), 5 states have internal predecessors, (140), 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 150 [2023-11-29 06:37:54,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:37:58,187 INFO L225 Difference]: With dead ends: 1163226 [2023-11-29 06:37:58,187 INFO L226 Difference]: Without dead ends: 850985 [2023-11-29 06:37:59,368 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-11-29 06:37:59,369 INFO L413 NwaCegarLoop]: 428 mSDtfsCounter, 1501 mSDsluCounter, 1420 mSDsCounter, 0 mSdLazyCounter, 3138 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1531 SdHoareTripleChecker+Valid, 1848 SdHoareTripleChecker+Invalid, 3202 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 3138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-11-29 06:37:59,369 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1531 Valid, 1848 Invalid, 3202 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 3138 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-11-29 06:37:59,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 850985 states.